update python-packages like mako/tornado/etc. to last version.

server/www/packages/packages-common/cryptography/__about__.py

@@ -0,0 +1,23 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+__all__ = [
+    "__title__", "__summary__", "__uri__", "__version__", "__author__",
+    "__email__", "__license__", "__copyright__",
+]
+
+__title__ = "cryptography"
+__summary__ = ("cryptography is a package which provides cryptographic recipes"
+               " and primitives to Python developers.")
+__uri__ = "https://github.com/pyca/cryptography"
+
+__version__ = "2.3.1"
+
+__author__ = "The cryptography developers"
+__email__ = "cryptography-dev@python.org"
+
+__license__ = "BSD or Apache License, Version 2.0"
+__copyright__ = "Copyright 2013-2017 {0}".format(__author__)

server/www/packages/packages-common/cryptography/__init__.py

@@ -0,0 +1,16 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography.__about__ import (
+    __author__, __copyright__, __email__, __license__, __summary__, __title__,
+    __uri__, __version__
+)
+
+
+__all__ = [
+    "__title__", "__summary__", "__uri__", "__version__", "__author__",
+    "__email__", "__license__", "__copyright__",
+]

server/www/packages/packages-common/cryptography/exceptions.py

@@ -0,0 +1,57 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from enum import Enum
+
+
+class _Reasons(Enum):
+    BACKEND_MISSING_INTERFACE = 0
+    UNSUPPORTED_HASH = 1
+    UNSUPPORTED_CIPHER = 2
+    UNSUPPORTED_PADDING = 3
+    UNSUPPORTED_MGF = 4
+    UNSUPPORTED_PUBLIC_KEY_ALGORITHM = 5
+    UNSUPPORTED_ELLIPTIC_CURVE = 6
+    UNSUPPORTED_SERIALIZATION = 7
+    UNSUPPORTED_X509 = 8
+    UNSUPPORTED_EXCHANGE_ALGORITHM = 9
+    UNSUPPORTED_DIFFIE_HELLMAN = 10
+
+
+class UnsupportedAlgorithm(Exception):
+    def __init__(self, message, reason=None):
+        super(UnsupportedAlgorithm, self).__init__(message)
+        self._reason = reason
+
+
+class AlreadyFinalized(Exception):
+    pass
+
+
+class AlreadyUpdated(Exception):
+    pass
+
+
+class NotYetFinalized(Exception):
+    pass
+
+
+class InvalidTag(Exception):
+    pass
+
+
+class InvalidSignature(Exception):
+    pass
+
+
+class InternalError(Exception):
+    def __init__(self, msg, err_code):
+        super(InternalError, self).__init__(msg)
+        self.err_code = err_code
+
+
+class InvalidKey(Exception):
+    pass

server/www/packages/packages-common/cryptography/fernet.py

@@ -0,0 +1,173 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import base64
+import binascii
+import os
+import struct
+import time
+
+import six
+
+from cryptography.exceptions import InvalidSignature
+from cryptography.hazmat.backends import default_backend
+from cryptography.hazmat.primitives import hashes, padding
+from cryptography.hazmat.primitives.ciphers import Cipher, algorithms, modes
+from cryptography.hazmat.primitives.hmac import HMAC
+
+
+class InvalidToken(Exception):
+    pass
+
+
+_MAX_CLOCK_SKEW = 60
+
+
+class Fernet(object):
+    def __init__(self, key, backend=None):
+        if backend is None:
+            backend = default_backend()
+
+        key = base64.urlsafe_b64decode(key)
+        if len(key) != 32:
+            raise ValueError(
+                "Fernet key must be 32 url-safe base64-encoded bytes."
+            )
+
+        self._signing_key = key[:16]
+        self._encryption_key = key[16:]
+        self._backend = backend
+
+    @classmethod
+    def generate_key(cls):
+        return base64.urlsafe_b64encode(os.urandom(32))
+
+    def encrypt(self, data):
+        current_time = int(time.time())
+        iv = os.urandom(16)
+        return self._encrypt_from_parts(data, current_time, iv)
+
+    def _encrypt_from_parts(self, data, current_time, iv):
+        if not isinstance(data, bytes):
+            raise TypeError("data must be bytes.")
+
+        padder = padding.PKCS7(algorithms.AES.block_size).padder()
+        padded_data = padder.update(data) + padder.finalize()
+        encryptor = Cipher(
+            algorithms.AES(self._encryption_key), modes.CBC(iv), self._backend
+        ).encryptor()
+        ciphertext = encryptor.update(padded_data) + encryptor.finalize()
+
+        basic_parts = (
+            b"\x80" + struct.pack(">Q", current_time) + iv + ciphertext
+        )
+
+        h = HMAC(self._signing_key, hashes.SHA256(), backend=self._backend)
+        h.update(basic_parts)
+        hmac = h.finalize()
+        return base64.urlsafe_b64encode(basic_parts + hmac)
+
+    def decrypt(self, token, ttl=None):
+        timestamp, data = Fernet._get_unverified_token_data(token)
+        return self._decrypt_data(data, timestamp, ttl)
+
+    def extract_timestamp(self, token):
+        timestamp, data = Fernet._get_unverified_token_data(token)
+        # Verify the token was not tampered with.
+        self._verify_signature(data)
+        return timestamp
+
+    @staticmethod
+    def _get_unverified_token_data(token):
+        if not isinstance(token, bytes):
+            raise TypeError("token must be bytes.")
+
+        try:
+            data = base64.urlsafe_b64decode(token)
+        except (TypeError, binascii.Error):
+            raise InvalidToken
+
+        if not data or six.indexbytes(data, 0) != 0x80:
+            raise InvalidToken
+
+        try:
+            timestamp, = struct.unpack(">Q", data[1:9])
+        except struct.error:
+            raise InvalidToken
+        return timestamp, data
+
+    def _verify_signature(self, data):
+        h = HMAC(self._signing_key, hashes.SHA256(), backend=self._backend)
+        h.update(data[:-32])
+        try:
+            h.verify(data[-32:])
+        except InvalidSignature:
+            raise InvalidToken
+
+    def _decrypt_data(self, data, timestamp, ttl):
+        current_time = int(time.time())
+        if ttl is not None:
+            if timestamp + ttl < current_time:
+                raise InvalidToken
+
+            if current_time + _MAX_CLOCK_SKEW < timestamp:
+                raise InvalidToken
+
+        self._verify_signature(data)
+
+        iv = data[9:25]
+        ciphertext = data[25:-32]
+        decryptor = Cipher(
+            algorithms.AES(self._encryption_key), modes.CBC(iv), self._backend
+        ).decryptor()
+        plaintext_padded = decryptor.update(ciphertext)
+        try:
+            plaintext_padded += decryptor.finalize()
+        except ValueError:
+            raise InvalidToken
+        unpadder = padding.PKCS7(algorithms.AES.block_size).unpadder()
+
+        unpadded = unpadder.update(plaintext_padded)
+        try:
+            unpadded += unpadder.finalize()
+        except ValueError:
+            raise InvalidToken
+        return unpadded
+
+
+class MultiFernet(object):
+    def __init__(self, fernets):
+        fernets = list(fernets)
+        if not fernets:
+            raise ValueError(
+                "MultiFernet requires at least one Fernet instance"
+            )
+        self._fernets = fernets
+
+    def encrypt(self, msg):
+        return self._fernets[0].encrypt(msg)
+
+    def rotate(self, msg):
+        timestamp, data = Fernet._get_unverified_token_data(msg)
+        for f in self._fernets:
+            try:
+                p = f._decrypt_data(data, timestamp, None)
+                break
+            except InvalidToken:
+                pass
+        else:
+            raise InvalidToken
+
+        iv = os.urandom(16)
+        return self._fernets[0]._encrypt_from_parts(p, timestamp, iv)
+
+    def decrypt(self, msg, ttl=None):
+        for f in self._fernets:
+            try:
+                return f.decrypt(msg, ttl)
+            except InvalidToken:
+                pass
+        raise InvalidToken

server/www/packages/packages-common/cryptography/hazmat/__init__.py

@@ -0,0 +1,11 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+"""
+Hazardous Materials
+
+This is a "Hazardous Materials" module. You should ONLY use it if you're
+100% absolutely sure that you know what you're doing because this module
+is full of land mines, dragons, and dinosaurs with laser guns.
+"""
+from __future__ import absolute_import, division, print_function

server/www/packages/packages-common/cryptography/hazmat/backends/__init__.py

@@ -0,0 +1,18 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+
+_default_backend = None
+
+
+def default_backend():
+    global _default_backend
+
+    if _default_backend is None:
+        from cryptography.hazmat.backends.openssl.backend import backend
+        _default_backend = backend
+
+    return _default_backend

server/www/packages/packages-common/cryptography/hazmat/backends/interfaces.py

@@ -0,0 +1,395 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+
+@six.add_metaclass(abc.ABCMeta)
+class CipherBackend(object):
+    @abc.abstractmethod
+    def cipher_supported(self, cipher, mode):
+        """
+        Return True if the given cipher and mode are supported.
+        """
+
+    @abc.abstractmethod
+    def create_symmetric_encryption_ctx(self, cipher, mode):
+        """
+        Get a CipherContext that can be used for encryption.
+        """
+
+    @abc.abstractmethod
+    def create_symmetric_decryption_ctx(self, cipher, mode):
+        """
+        Get a CipherContext that can be used for decryption.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class HashBackend(object):
+    @abc.abstractmethod
+    def hash_supported(self, algorithm):
+        """
+        Return True if the hash algorithm is supported by this backend.
+        """
+
+    @abc.abstractmethod
+    def create_hash_ctx(self, algorithm):
+        """
+        Create a HashContext for calculating a message digest.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class HMACBackend(object):
+    @abc.abstractmethod
+    def hmac_supported(self, algorithm):
+        """
+        Return True if the hash algorithm is supported for HMAC by this
+        backend.
+        """
+
+    @abc.abstractmethod
+    def create_hmac_ctx(self, key, algorithm):
+        """
+        Create a MACContext for calculating a message authentication code.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class CMACBackend(object):
+    @abc.abstractmethod
+    def cmac_algorithm_supported(self, algorithm):
+        """
+        Returns True if the block cipher is supported for CMAC by this backend
+        """
+
+    @abc.abstractmethod
+    def create_cmac_ctx(self, algorithm):
+        """
+        Create a MACContext for calculating a message authentication code.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class PBKDF2HMACBackend(object):
+    @abc.abstractmethod
+    def pbkdf2_hmac_supported(self, algorithm):
+        """
+        Return True if the hash algorithm is supported for PBKDF2 by this
+        backend.
+        """
+
+    @abc.abstractmethod
+    def derive_pbkdf2_hmac(self, algorithm, length, salt, iterations,
+                           key_material):
+        """
+        Return length bytes derived from provided PBKDF2 parameters.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class RSABackend(object):
+    @abc.abstractmethod
+    def generate_rsa_private_key(self, public_exponent, key_size):
+        """
+        Generate an RSAPrivateKey instance with public_exponent and a modulus
+        of key_size bits.
+        """
+
+    @abc.abstractmethod
+    def rsa_padding_supported(self, padding):
+        """
+        Returns True if the backend supports the given padding options.
+        """
+
+    @abc.abstractmethod
+    def generate_rsa_parameters_supported(self, public_exponent, key_size):
+        """
+        Returns True if the backend supports the given parameters for key
+        generation.
+        """
+
+    @abc.abstractmethod
+    def load_rsa_private_numbers(self, numbers):
+        """
+        Returns an RSAPrivateKey provider.
+        """
+
+    @abc.abstractmethod
+    def load_rsa_public_numbers(self, numbers):
+        """
+        Returns an RSAPublicKey provider.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DSABackend(object):
+    @abc.abstractmethod
+    def generate_dsa_parameters(self, key_size):
+        """
+        Generate a DSAParameters instance with a modulus of key_size bits.
+        """
+
+    @abc.abstractmethod
+    def generate_dsa_private_key(self, parameters):
+        """
+        Generate a DSAPrivateKey instance with parameters as a DSAParameters
+        object.
+        """
+
+    @abc.abstractmethod
+    def generate_dsa_private_key_and_parameters(self, key_size):
+        """
+        Generate a DSAPrivateKey instance using key size only.
+        """
+
+    @abc.abstractmethod
+    def dsa_hash_supported(self, algorithm):
+        """
+        Return True if the hash algorithm is supported by the backend for DSA.
+        """
+
+    @abc.abstractmethod
+    def dsa_parameters_supported(self, p, q, g):
+        """
+        Return True if the parameters are supported by the backend for DSA.
+        """
+
+    @abc.abstractmethod
+    def load_dsa_private_numbers(self, numbers):
+        """
+        Returns a DSAPrivateKey provider.
+        """
+
+    @abc.abstractmethod
+    def load_dsa_public_numbers(self, numbers):
+        """
+        Returns a DSAPublicKey provider.
+        """
+
+    @abc.abstractmethod
+    def load_dsa_parameter_numbers(self, numbers):
+        """
+        Returns a DSAParameters provider.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class EllipticCurveBackend(object):
+    @abc.abstractmethod
+    def elliptic_curve_signature_algorithm_supported(
+        self, signature_algorithm, curve
+    ):
+        """
+        Returns True if the backend supports the named elliptic curve with the
+        specified signature algorithm.
+        """
+
+    @abc.abstractmethod
+    def elliptic_curve_supported(self, curve):
+        """
+        Returns True if the backend supports the named elliptic curve.
+        """
+
+    @abc.abstractmethod
+    def generate_elliptic_curve_private_key(self, curve):
+        """
+        Return an object conforming to the EllipticCurvePrivateKey interface.
+        """
+
+    @abc.abstractmethod
+    def load_elliptic_curve_public_numbers(self, numbers):
+        """
+        Return an EllipticCurvePublicKey provider using the given numbers.
+        """
+
+    @abc.abstractmethod
+    def load_elliptic_curve_private_numbers(self, numbers):
+        """
+        Return an EllipticCurvePrivateKey provider using the given numbers.
+        """
+
+    @abc.abstractmethod
+    def elliptic_curve_exchange_algorithm_supported(self, algorithm, curve):
+        """
+        Returns whether the exchange algorithm is supported by this backend.
+        """
+
+    @abc.abstractmethod
+    def derive_elliptic_curve_private_key(self, private_value, curve):
+        """
+        Compute the private key given the private value and curve.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class PEMSerializationBackend(object):
+    @abc.abstractmethod
+    def load_pem_private_key(self, data, password):
+        """
+        Loads a private key from PEM encoded data, using the provided password
+        if the data is encrypted.
+        """
+
+    @abc.abstractmethod
+    def load_pem_public_key(self, data):
+        """
+        Loads a public key from PEM encoded data.
+        """
+
+    @abc.abstractmethod
+    def load_pem_parameters(self, data):
+        """
+        Load encryption parameters from PEM encoded data.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DERSerializationBackend(object):
+    @abc.abstractmethod
+    def load_der_private_key(self, data, password):
+        """
+        Loads a private key from DER encoded data. Uses the provided password
+        if the data is encrypted.
+        """
+
+    @abc.abstractmethod
+    def load_der_public_key(self, data):
+        """
+        Loads a public key from DER encoded data.
+        """
+
+    @abc.abstractmethod
+    def load_der_parameters(self, data):
+        """
+        Load encryption parameters from DER encoded data.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class X509Backend(object):
+    @abc.abstractmethod
+    def load_pem_x509_certificate(self, data):
+        """
+        Load an X.509 certificate from PEM encoded data.
+        """
+
+    @abc.abstractmethod
+    def load_der_x509_certificate(self, data):
+        """
+        Load an X.509 certificate from DER encoded data.
+        """
+
+    @abc.abstractmethod
+    def load_der_x509_csr(self, data):
+        """
+        Load an X.509 CSR from DER encoded data.
+        """
+
+    @abc.abstractmethod
+    def load_pem_x509_csr(self, data):
+        """
+        Load an X.509 CSR from PEM encoded data.
+        """
+
+    @abc.abstractmethod
+    def create_x509_csr(self, builder, private_key, algorithm):
+        """
+        Create and sign an X.509 CSR from a CSR builder object.
+        """
+
+    @abc.abstractmethod
+    def create_x509_certificate(self, builder, private_key, algorithm):
+        """
+        Create and sign an X.509 certificate from a CertificateBuilder object.
+        """
+
+    @abc.abstractmethod
+    def create_x509_crl(self, builder, private_key, algorithm):
+        """
+        Create and sign an X.509 CertificateRevocationList from a
+        CertificateRevocationListBuilder object.
+        """
+
+    @abc.abstractmethod
+    def create_x509_revoked_certificate(self, builder):
+        """
+        Create a RevokedCertificate object from a RevokedCertificateBuilder
+        object.
+        """
+
+    @abc.abstractmethod
+    def x509_name_bytes(self, name):
+        """
+        Compute the DER encoded bytes of an X509 Name object.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DHBackend(object):
+    @abc.abstractmethod
+    def generate_dh_parameters(self, generator, key_size):
+        """
+        Generate a DHParameters instance with a modulus of key_size bits.
+        Using the given generator. Often 2 or 5.
+        """
+
+    @abc.abstractmethod
+    def generate_dh_private_key(self, parameters):
+        """
+        Generate a DHPrivateKey instance with parameters as a DHParameters
+        object.
+        """
+
+    @abc.abstractmethod
+    def generate_dh_private_key_and_parameters(self, generator, key_size):
+        """
+        Generate a DHPrivateKey instance using key size only.
+        Using the given generator. Often 2 or 5.
+        """
+
+    @abc.abstractmethod
+    def load_dh_private_numbers(self, numbers):
+        """
+        Load a DHPrivateKey from DHPrivateNumbers
+        """
+
+    @abc.abstractmethod
+    def load_dh_public_numbers(self, numbers):
+        """
+        Load a DHPublicKey from DHPublicNumbers.
+        """
+
+    @abc.abstractmethod
+    def load_dh_parameter_numbers(self, numbers):
+        """
+        Load DHParameters from DHParameterNumbers.
+        """
+
+    @abc.abstractmethod
+    def dh_parameters_supported(self, p, g, q=None):
+        """
+        Returns whether the backend supports DH with these parameter values.
+        """
+
+    @abc.abstractmethod
+    def dh_x942_serialization_supported(self):
+        """
+        Returns True if the backend supports the serialization of DH objects
+        with subgroup order (q).
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class ScryptBackend(object):
+    @abc.abstractmethod
+    def derive_scrypt(self, key_material, salt, length, n, r, p):
+        """
+        Return bytes derived from provided Scrypt parameters.
+        """

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/__init__.py

@@ -0,0 +1,10 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography.hazmat.backends.openssl.backend import backend
+
+
+__all__ = ["backend"]

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/aead.py

@@ -0,0 +1,159 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography.exceptions import InvalidTag
+
+
+_ENCRYPT = 1
+_DECRYPT = 0
+
+
+def _aead_cipher_name(cipher):
+    from cryptography.hazmat.primitives.ciphers.aead import (
+        AESCCM, AESGCM, ChaCha20Poly1305
+    )
+    if isinstance(cipher, ChaCha20Poly1305):
+        return b"chacha20-poly1305"
+    elif isinstance(cipher, AESCCM):
+        return "aes-{0}-ccm".format(len(cipher._key) * 8).encode("ascii")
+    else:
+        assert isinstance(cipher, AESGCM)
+        return "aes-{0}-gcm".format(len(cipher._key) * 8).encode("ascii")
+
+
+def _aead_setup(backend, cipher_name, key, nonce, tag, tag_len, operation):
+    evp_cipher = backend._lib.EVP_get_cipherbyname(cipher_name)
+    backend.openssl_assert(evp_cipher != backend._ffi.NULL)
+    ctx = backend._lib.EVP_CIPHER_CTX_new()
+    ctx = backend._ffi.gc(ctx, backend._lib.EVP_CIPHER_CTX_free)
+    res = backend._lib.EVP_CipherInit_ex(
+        ctx, evp_cipher,
+        backend._ffi.NULL,
+        backend._ffi.NULL,
+        backend._ffi.NULL,
+        int(operation == _ENCRYPT)
+    )
+    backend.openssl_assert(res != 0)
+    res = backend._lib.EVP_CIPHER_CTX_set_key_length(ctx, len(key))
+    backend.openssl_assert(res != 0)
+    res = backend._lib.EVP_CIPHER_CTX_ctrl(
+        ctx, backend._lib.EVP_CTRL_AEAD_SET_IVLEN, len(nonce),
+        backend._ffi.NULL
+    )
+    backend.openssl_assert(res != 0)
+    if operation == _DECRYPT:
+        res = backend._lib.EVP_CIPHER_CTX_ctrl(
+            ctx, backend._lib.EVP_CTRL_AEAD_SET_TAG, len(tag), tag
+        )
+        backend.openssl_assert(res != 0)
+    else:
+        res = backend._lib.EVP_CIPHER_CTX_ctrl(
+            ctx, backend._lib.EVP_CTRL_AEAD_SET_TAG, tag_len, backend._ffi.NULL
+        )
+
+    res = backend._lib.EVP_CipherInit_ex(
+        ctx,
+        backend._ffi.NULL,
+        backend._ffi.NULL,
+        key,
+        nonce,
+        int(operation == _ENCRYPT)
+    )
+    backend.openssl_assert(res != 0)
+    return ctx
+
+
+def _set_length(backend, ctx, data_len):
+    intptr = backend._ffi.new("int *")
+    res = backend._lib.EVP_CipherUpdate(
+        ctx,
+        backend._ffi.NULL,
+        intptr,
+        backend._ffi.NULL,
+        data_len
+    )
+    backend.openssl_assert(res != 0)
+
+
+def _process_aad(backend, ctx, associated_data):
+    outlen = backend._ffi.new("int *")
+    res = backend._lib.EVP_CipherUpdate(
+        ctx, backend._ffi.NULL, outlen, associated_data, len(associated_data)
+    )
+    backend.openssl_assert(res != 0)
+
+
+def _process_data(backend, ctx, data):
+    outlen = backend._ffi.new("int *")
+    buf = backend._ffi.new("unsigned char[]", len(data))
+    res = backend._lib.EVP_CipherUpdate(ctx, buf, outlen, data, len(data))
+    backend.openssl_assert(res != 0)
+    return backend._ffi.buffer(buf, outlen[0])[:]
+
+
+def _encrypt(backend, cipher, nonce, data, associated_data, tag_length):
+    from cryptography.hazmat.primitives.ciphers.aead import AESCCM
+    cipher_name = _aead_cipher_name(cipher)
+    ctx = _aead_setup(
+        backend, cipher_name, cipher._key, nonce, None, tag_length, _ENCRYPT
+    )
+    # CCM requires us to pass the length of the data before processing anything
+    # However calling this with any other AEAD results in an error
+    if isinstance(cipher, AESCCM):
+        _set_length(backend, ctx, len(data))
+
+    _process_aad(backend, ctx, associated_data)
+    processed_data = _process_data(backend, ctx, data)
+    outlen = backend._ffi.new("int *")
+    res = backend._lib.EVP_CipherFinal_ex(ctx, backend._ffi.NULL, outlen)
+    backend.openssl_assert(res != 0)
+    backend.openssl_assert(outlen[0] == 0)
+    tag_buf = backend._ffi.new("unsigned char[]", tag_length)
+    res = backend._lib.EVP_CIPHER_CTX_ctrl(
+        ctx, backend._lib.EVP_CTRL_AEAD_GET_TAG, tag_length, tag_buf
+    )
+    backend.openssl_assert(res != 0)
+    tag = backend._ffi.buffer(tag_buf)[:]
+
+    return processed_data + tag
+
+
+def _decrypt(backend, cipher, nonce, data, associated_data, tag_length):
+    from cryptography.hazmat.primitives.ciphers.aead import AESCCM
+    if len(data) < tag_length:
+        raise InvalidTag
+    tag = data[-tag_length:]
+    data = data[:-tag_length]
+    cipher_name = _aead_cipher_name(cipher)
+    ctx = _aead_setup(
+        backend, cipher_name, cipher._key, nonce, tag, tag_length, _DECRYPT
+    )
+    # CCM requires us to pass the length of the data before processing anything
+    # However calling this with any other AEAD results in an error
+    if isinstance(cipher, AESCCM):
+        _set_length(backend, ctx, len(data))
+
+    _process_aad(backend, ctx, associated_data)
+    # CCM has a different error path if the tag doesn't match. Errors are
+    # raised in Update and Final is irrelevant.
+    if isinstance(cipher, AESCCM):
+        outlen = backend._ffi.new("int *")
+        buf = backend._ffi.new("unsigned char[]", len(data))
+        res = backend._lib.EVP_CipherUpdate(ctx, buf, outlen, data, len(data))
+        if res != 1:
+            backend._consume_errors()
+            raise InvalidTag
+
+        processed_data = backend._ffi.buffer(buf, outlen[0])[:]
+    else:
+        processed_data = _process_data(backend, ctx, data)
+        outlen = backend._ffi.new("int *")
+        res = backend._lib.EVP_CipherFinal_ex(ctx, backend._ffi.NULL, outlen)
+        if res == 0:
+            backend._consume_errors()
+            raise InvalidTag
+
+    return processed_data

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/ciphers.py

@@ -0,0 +1,222 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.exceptions import InvalidTag, UnsupportedAlgorithm, _Reasons
+from cryptography.hazmat.primitives import ciphers
+from cryptography.hazmat.primitives.ciphers import modes
+
+
+@utils.register_interface(ciphers.CipherContext)
+@utils.register_interface(ciphers.AEADCipherContext)
+@utils.register_interface(ciphers.AEADEncryptionContext)
+@utils.register_interface(ciphers.AEADDecryptionContext)
+class _CipherContext(object):
+    _ENCRYPT = 1
+    _DECRYPT = 0
+
+    def __init__(self, backend, cipher, mode, operation):
+        self._backend = backend
+        self._cipher = cipher
+        self._mode = mode
+        self._operation = operation
+        self._tag = None
+
+        if isinstance(self._cipher, ciphers.BlockCipherAlgorithm):
+            self._block_size_bytes = self._cipher.block_size // 8
+        else:
+            self._block_size_bytes = 1
+
+        ctx = self._backend._lib.EVP_CIPHER_CTX_new()
+        ctx = self._backend._ffi.gc(
+            ctx, self._backend._lib.EVP_CIPHER_CTX_free
+        )
+
+        registry = self._backend._cipher_registry
+        try:
+            adapter = registry[type(cipher), type(mode)]
+        except KeyError:
+            raise UnsupportedAlgorithm(
+                "cipher {0} in {1} mode is not supported "
+                "by this backend.".format(
+                    cipher.name, mode.name if mode else mode),
+                _Reasons.UNSUPPORTED_CIPHER
+            )
+
+        evp_cipher = adapter(self._backend, cipher, mode)
+        if evp_cipher == self._backend._ffi.NULL:
+            raise UnsupportedAlgorithm(
+                "cipher {0} in {1} mode is not supported "
+                "by this backend.".format(
+                    cipher.name, mode.name if mode else mode),
+                _Reasons.UNSUPPORTED_CIPHER
+            )
+
+        if isinstance(mode, modes.ModeWithInitializationVector):
+            iv_nonce = mode.initialization_vector
+        elif isinstance(mode, modes.ModeWithTweak):
+            iv_nonce = mode.tweak
+        elif isinstance(mode, modes.ModeWithNonce):
+            iv_nonce = mode.nonce
+        elif isinstance(cipher, modes.ModeWithNonce):
+            iv_nonce = cipher.nonce
+        else:
+            iv_nonce = self._backend._ffi.NULL
+        # begin init with cipher and operation type
+        res = self._backend._lib.EVP_CipherInit_ex(ctx, evp_cipher,
+                                                   self._backend._ffi.NULL,
+                                                   self._backend._ffi.NULL,
+                                                   self._backend._ffi.NULL,
+                                                   operation)
+        self._backend.openssl_assert(res != 0)
+        # set the key length to handle variable key ciphers
+        res = self._backend._lib.EVP_CIPHER_CTX_set_key_length(
+            ctx, len(cipher.key)
+        )
+        self._backend.openssl_assert(res != 0)
+        if isinstance(mode, modes.GCM):
+            res = self._backend._lib.EVP_CIPHER_CTX_ctrl(
+                ctx, self._backend._lib.EVP_CTRL_AEAD_SET_IVLEN,
+                len(iv_nonce), self._backend._ffi.NULL
+            )
+            self._backend.openssl_assert(res != 0)
+            if mode.tag is not None:
+                res = self._backend._lib.EVP_CIPHER_CTX_ctrl(
+                    ctx, self._backend._lib.EVP_CTRL_AEAD_SET_TAG,
+                    len(mode.tag), mode.tag
+                )
+                self._backend.openssl_assert(res != 0)
+                self._tag = mode.tag
+            elif (
+                self._operation == self._DECRYPT and
+                self._backend._lib.CRYPTOGRAPHY_OPENSSL_LESS_THAN_102 and
+                not self._backend._lib.CRYPTOGRAPHY_IS_LIBRESSL
+            ):
+                raise NotImplementedError(
+                    "delayed passing of GCM tag requires OpenSSL >= 1.0.2."
+                    " To use this feature please update OpenSSL"
+                )
+
+        # pass key/iv
+        res = self._backend._lib.EVP_CipherInit_ex(
+            ctx,
+            self._backend._ffi.NULL,
+            self._backend._ffi.NULL,
+            cipher.key,
+            iv_nonce,
+            operation
+        )
+        self._backend.openssl_assert(res != 0)
+        # We purposely disable padding here as it's handled higher up in the
+        # API.
+        self._backend._lib.EVP_CIPHER_CTX_set_padding(ctx, 0)
+        self._ctx = ctx
+
+    def update(self, data):
+        buf = bytearray(len(data) + self._block_size_bytes - 1)
+        n = self.update_into(data, buf)
+        return bytes(buf[:n])
+
+    def update_into(self, data, buf):
+        if len(buf) < (len(data) + self._block_size_bytes - 1):
+            raise ValueError(
+                "buffer must be at least {0} bytes for this "
+                "payload".format(len(data) + self._block_size_bytes - 1)
+            )
+
+        buf = self._backend._ffi.cast(
+            "unsigned char *", self._backend._ffi.from_buffer(buf)
+        )
+        outlen = self._backend._ffi.new("int *")
+        res = self._backend._lib.EVP_CipherUpdate(self._ctx, buf, outlen,
+                                                  data, len(data))
+        self._backend.openssl_assert(res != 0)
+        return outlen[0]
+
+    def finalize(self):
+        # OpenSSL 1.0.1 on Ubuntu 12.04 (and possibly other distributions)
+        # appears to have a bug where you must make at least one call to update
+        # even if you are only using authenticate_additional_data or the
+        # GCM tag will be wrong. An (empty) call to update resolves this
+        # and is harmless for all other versions of OpenSSL.
+        if isinstance(self._mode, modes.GCM):
+            self.update(b"")
+
+        if (
+            self._operation == self._DECRYPT and
+            isinstance(self._mode, modes.ModeWithAuthenticationTag) and
+            self.tag is None
+        ):
+            raise ValueError(
+                "Authentication tag must be provided when decrypting."
+            )
+
+        buf = self._backend._ffi.new("unsigned char[]", self._block_size_bytes)
+        outlen = self._backend._ffi.new("int *")
+        res = self._backend._lib.EVP_CipherFinal_ex(self._ctx, buf, outlen)
+        if res == 0:
+            errors = self._backend._consume_errors()
+
+            if not errors and isinstance(self._mode, modes.GCM):
+                raise InvalidTag
+
+            self._backend.openssl_assert(
+                errors[0]._lib_reason_match(
+                    self._backend._lib.ERR_LIB_EVP,
+                    self._backend._lib.EVP_R_DATA_NOT_MULTIPLE_OF_BLOCK_LENGTH
+                )
+            )
+            raise ValueError(
+                "The length of the provided data is not a multiple of "
+                "the block length."
+            )
+
+        if (isinstance(self._mode, modes.GCM) and
+           self._operation == self._ENCRYPT):
+            tag_buf = self._backend._ffi.new(
+                "unsigned char[]", self._block_size_bytes
+            )
+            res = self._backend._lib.EVP_CIPHER_CTX_ctrl(
+                self._ctx, self._backend._lib.EVP_CTRL_AEAD_GET_TAG,
+                self._block_size_bytes, tag_buf
+            )
+            self._backend.openssl_assert(res != 0)
+            self._tag = self._backend._ffi.buffer(tag_buf)[:]
+
+        res = self._backend._lib.EVP_CIPHER_CTX_cleanup(self._ctx)
+        self._backend.openssl_assert(res == 1)
+        return self._backend._ffi.buffer(buf)[:outlen[0]]
+
+    def finalize_with_tag(self, tag):
+        if (
+            self._backend._lib.CRYPTOGRAPHY_OPENSSL_LESS_THAN_102 and
+            not self._backend._lib.CRYPTOGRAPHY_IS_LIBRESSL
+        ):
+            raise NotImplementedError(
+                "finalize_with_tag requires OpenSSL >= 1.0.2. To use this "
+                "method please update OpenSSL"
+            )
+        if len(tag) < self._mode._min_tag_length:
+            raise ValueError(
+                "Authentication tag must be {0} bytes or longer.".format(
+                    self._mode._min_tag_length)
+            )
+        res = self._backend._lib.EVP_CIPHER_CTX_ctrl(
+            self._ctx, self._backend._lib.EVP_CTRL_AEAD_SET_TAG,
+            len(tag), tag
+        )
+        self._backend.openssl_assert(res != 0)
+        self._tag = tag
+        return self.finalize()
+
+    def authenticate_additional_data(self, data):
+        outlen = self._backend._ffi.new("int *")
+        res = self._backend._lib.EVP_CipherUpdate(
+            self._ctx, self._backend._ffi.NULL, outlen, data, len(data)
+        )
+        self._backend.openssl_assert(res != 0)
+
+    tag = utils.read_only_property("_tag")

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/cmac.py

@@ -0,0 +1,81 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+
+from cryptography import utils
+from cryptography.exceptions import (
+    InvalidSignature, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.primitives import constant_time, mac
+from cryptography.hazmat.primitives.ciphers.modes import CBC
+
+
+@utils.register_interface(mac.MACContext)
+class _CMACContext(object):
+    def __init__(self, backend, algorithm, ctx=None):
+        if not backend.cmac_algorithm_supported(algorithm):
+            raise UnsupportedAlgorithm("This backend does not support CMAC.",
+                                       _Reasons.UNSUPPORTED_CIPHER)
+
+        self._backend = backend
+        self._key = algorithm.key
+        self._algorithm = algorithm
+        self._output_length = algorithm.block_size // 8
+
+        if ctx is None:
+            registry = self._backend._cipher_registry
+            adapter = registry[type(algorithm), CBC]
+
+            evp_cipher = adapter(self._backend, algorithm, CBC)
+
+            ctx = self._backend._lib.CMAC_CTX_new()
+
+            self._backend.openssl_assert(ctx != self._backend._ffi.NULL)
+            ctx = self._backend._ffi.gc(ctx, self._backend._lib.CMAC_CTX_free)
+
+            res = self._backend._lib.CMAC_Init(
+                ctx, self._key, len(self._key),
+                evp_cipher, self._backend._ffi.NULL
+            )
+            self._backend.openssl_assert(res == 1)
+
+        self._ctx = ctx
+
+    algorithm = utils.read_only_property("_algorithm")
+
+    def update(self, data):
+        res = self._backend._lib.CMAC_Update(self._ctx, data, len(data))
+        self._backend.openssl_assert(res == 1)
+
+    def finalize(self):
+        buf = self._backend._ffi.new("unsigned char[]", self._output_length)
+        length = self._backend._ffi.new("size_t *", self._output_length)
+        res = self._backend._lib.CMAC_Final(
+            self._ctx, buf, length
+        )
+        self._backend.openssl_assert(res == 1)
+
+        self._ctx = None
+
+        return self._backend._ffi.buffer(buf)[:]
+
+    def copy(self):
+        copied_ctx = self._backend._lib.CMAC_CTX_new()
+        copied_ctx = self._backend._ffi.gc(
+            copied_ctx, self._backend._lib.CMAC_CTX_free
+        )
+        res = self._backend._lib.CMAC_CTX_copy(
+            copied_ctx, self._ctx
+        )
+        self._backend.openssl_assert(res == 1)
+        return _CMACContext(
+            self._backend, self._algorithm, ctx=copied_ctx
+        )
+
+    def verify(self, signature):
+        digest = self.finalize()
+        if not constant_time.bytes_eq(digest, signature):
+            raise InvalidSignature("Signature did not match digest.")

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/decode_asn1.py

@@ -0,0 +1,826 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import datetime
+import ipaddress
+
+from asn1crypto.core import Integer, SequenceOf
+
+from cryptography import x509
+from cryptography.x509.extensions import _TLS_FEATURE_TYPE_TO_ENUM
+from cryptography.x509.name import _ASN1_TYPE_TO_ENUM
+from cryptography.x509.oid import (
+    CRLEntryExtensionOID, CertificatePoliciesOID, ExtensionOID
+)
+
+
+class _Integers(SequenceOf):
+    _child_spec = Integer
+
+
+def _obj2txt(backend, obj):
+    # Set to 80 on the recommendation of
+    # https://www.openssl.org/docs/crypto/OBJ_nid2ln.html#return_values
+    #
+    # But OIDs longer than this occur in real life (e.g. Active
+    # Directory makes some very long OIDs).  So we need to detect
+    # and properly handle the case where the default buffer is not
+    # big enough.
+    #
+    buf_len = 80
+    buf = backend._ffi.new("char[]", buf_len)
+
+    # 'res' is the number of bytes that *would* be written if the
+    # buffer is large enough.  If 'res' > buf_len - 1, we need to
+    # alloc a big-enough buffer and go again.
+    res = backend._lib.OBJ_obj2txt(buf, buf_len, obj, 1)
+    if res > buf_len - 1:  # account for terminating null byte
+        buf_len = res + 1
+        buf = backend._ffi.new("char[]", buf_len)
+        res = backend._lib.OBJ_obj2txt(buf, buf_len, obj, 1)
+    backend.openssl_assert(res > 0)
+    return backend._ffi.buffer(buf, res)[:].decode()
+
+
+def _decode_x509_name_entry(backend, x509_name_entry):
+    obj = backend._lib.X509_NAME_ENTRY_get_object(x509_name_entry)
+    backend.openssl_assert(obj != backend._ffi.NULL)
+    data = backend._lib.X509_NAME_ENTRY_get_data(x509_name_entry)
+    backend.openssl_assert(data != backend._ffi.NULL)
+    value = _asn1_string_to_utf8(backend, data)
+    oid = _obj2txt(backend, obj)
+    type = _ASN1_TYPE_TO_ENUM[data.type]
+
+    return x509.NameAttribute(x509.ObjectIdentifier(oid), value, type)
+
+
+def _decode_x509_name(backend, x509_name):
+    count = backend._lib.X509_NAME_entry_count(x509_name)
+    attributes = []
+    prev_set_id = -1
+    for x in range(count):
+        entry = backend._lib.X509_NAME_get_entry(x509_name, x)
+        attribute = _decode_x509_name_entry(backend, entry)
+        set_id = backend._lib.Cryptography_X509_NAME_ENTRY_set(entry)
+        if set_id != prev_set_id:
+            attributes.append(set([attribute]))
+        else:
+            # is in the same RDN a previous entry
+            attributes[-1].add(attribute)
+        prev_set_id = set_id
+
+    return x509.Name(x509.RelativeDistinguishedName(rdn) for rdn in attributes)
+
+
+def _decode_general_names(backend, gns):
+    num = backend._lib.sk_GENERAL_NAME_num(gns)
+    names = []
+    for i in range(num):
+        gn = backend._lib.sk_GENERAL_NAME_value(gns, i)
+        backend.openssl_assert(gn != backend._ffi.NULL)
+        names.append(_decode_general_name(backend, gn))
+
+    return names
+
+
+def _decode_general_name(backend, gn):
+    if gn.type == backend._lib.GEN_DNS:
+        # Convert to bytes and then decode to utf8. We don't use
+        # asn1_string_to_utf8 here because it doesn't properly convert
+        # utf8 from ia5strings.
+        data = _asn1_string_to_bytes(backend, gn.d.dNSName).decode("utf8")
+        # We don't use the constructor for DNSName so we can bypass validation
+        # This allows us to create DNSName objects that have unicode chars
+        # when a certificate (against the RFC) contains them.
+        return x509.DNSName._init_without_validation(data)
+    elif gn.type == backend._lib.GEN_URI:
+        # Convert to bytes and then decode to utf8. We don't use
+        # asn1_string_to_utf8 here because it doesn't properly convert
+        # utf8 from ia5strings.
+        data = _asn1_string_to_bytes(
+            backend, gn.d.uniformResourceIdentifier
+        ).decode("utf8")
+        # We don't use the constructor for URI so we can bypass validation
+        # This allows us to create URI objects that have unicode chars
+        # when a certificate (against the RFC) contains them.
+        return x509.UniformResourceIdentifier._init_without_validation(data)
+    elif gn.type == backend._lib.GEN_RID:
+        oid = _obj2txt(backend, gn.d.registeredID)
+        return x509.RegisteredID(x509.ObjectIdentifier(oid))
+    elif gn.type == backend._lib.GEN_IPADD:
+        data = _asn1_string_to_bytes(backend, gn.d.iPAddress)
+        data_len = len(data)
+        if data_len == 8 or data_len == 32:
+            # This is an IPv4 or IPv6 Network and not a single IP. This
+            # type of data appears in Name Constraints. Unfortunately,
+            # ipaddress doesn't support packed bytes + netmask. Additionally,
+            # IPv6Network can only handle CIDR rather than the full 16 byte
+            # netmask. To handle this we convert the netmask to integer, then
+            # find the first 0 bit, which will be the prefix. If another 1
+            # bit is present after that the netmask is invalid.
+            base = ipaddress.ip_address(data[:data_len // 2])
+            netmask = ipaddress.ip_address(data[data_len // 2:])
+            bits = bin(int(netmask))[2:]
+            prefix = bits.find('0')
+            # If no 0 bits are found it is a /32 or /128
+            if prefix == -1:
+                prefix = len(bits)
+
+            if "1" in bits[prefix:]:
+                raise ValueError("Invalid netmask")
+
+            ip = ipaddress.ip_network(base.exploded + u"/{0}".format(prefix))
+        else:
+            ip = ipaddress.ip_address(data)
+
+        return x509.IPAddress(ip)
+    elif gn.type == backend._lib.GEN_DIRNAME:
+        return x509.DirectoryName(
+            _decode_x509_name(backend, gn.d.directoryName)
+        )
+    elif gn.type == backend._lib.GEN_EMAIL:
+        # Convert to bytes and then decode to utf8. We don't use
+        # asn1_string_to_utf8 here because it doesn't properly convert
+        # utf8 from ia5strings.
+        data = _asn1_string_to_bytes(backend, gn.d.rfc822Name).decode("utf8")
+        # We don't use the constructor for RFC822Name so we can bypass
+        # validation. This allows us to create RFC822Name objects that have
+        # unicode chars when a certificate (against the RFC) contains them.
+        return x509.RFC822Name._init_without_validation(data)
+    elif gn.type == backend._lib.GEN_OTHERNAME:
+        type_id = _obj2txt(backend, gn.d.otherName.type_id)
+        value = _asn1_to_der(backend, gn.d.otherName.value)
+        return x509.OtherName(x509.ObjectIdentifier(type_id), value)
+    else:
+        # x400Address or ediPartyName
+        raise x509.UnsupportedGeneralNameType(
+            "{0} is not a supported type".format(
+                x509._GENERAL_NAMES.get(gn.type, gn.type)
+            ),
+            gn.type
+        )
+
+
+def _decode_ocsp_no_check(backend, ext):
+    return x509.OCSPNoCheck()
+
+
+def _decode_crl_number(backend, ext):
+    asn1_int = backend._ffi.cast("ASN1_INTEGER *", ext)
+    asn1_int = backend._ffi.gc(asn1_int, backend._lib.ASN1_INTEGER_free)
+    return x509.CRLNumber(_asn1_integer_to_int(backend, asn1_int))
+
+
+def _decode_delta_crl_indicator(backend, ext):
+    asn1_int = backend._ffi.cast("ASN1_INTEGER *", ext)
+    asn1_int = backend._ffi.gc(asn1_int, backend._lib.ASN1_INTEGER_free)
+    return x509.DeltaCRLIndicator(_asn1_integer_to_int(backend, asn1_int))
+
+
+class _X509ExtensionParser(object):
+    def __init__(self, ext_count, get_ext, handlers):
+        self.ext_count = ext_count
+        self.get_ext = get_ext
+        self.handlers = handlers
+
+    def parse(self, backend, x509_obj):
+        extensions = []
+        seen_oids = set()
+        for i in range(self.ext_count(backend, x509_obj)):
+            ext = self.get_ext(backend, x509_obj, i)
+            backend.openssl_assert(ext != backend._ffi.NULL)
+            crit = backend._lib.X509_EXTENSION_get_critical(ext)
+            critical = crit == 1
+            oid = x509.ObjectIdentifier(
+                _obj2txt(backend, backend._lib.X509_EXTENSION_get_object(ext))
+            )
+            if oid in seen_oids:
+                raise x509.DuplicateExtension(
+                    "Duplicate {0} extension found".format(oid), oid
+                )
+
+            # This OID is only supported in OpenSSL 1.1.0+ but we want
+            # to support it in all versions of OpenSSL so we decode it
+            # ourselves.
+            if oid == ExtensionOID.TLS_FEATURE:
+                data = backend._lib.X509_EXTENSION_get_data(ext)
+                parsed = _Integers.load(_asn1_string_to_bytes(backend, data))
+                value = x509.TLSFeature(
+                    [_TLS_FEATURE_TYPE_TO_ENUM[x.native] for x in parsed]
+                )
+                extensions.append(x509.Extension(oid, critical, value))
+                seen_oids.add(oid)
+                continue
+
+            try:
+                handler = self.handlers[oid]
+            except KeyError:
+                # Dump the DER payload into an UnrecognizedExtension object
+                data = backend._lib.X509_EXTENSION_get_data(ext)
+                backend.openssl_assert(data != backend._ffi.NULL)
+                der = backend._ffi.buffer(data.data, data.length)[:]
+                unrecognized = x509.UnrecognizedExtension(oid, der)
+                extensions.append(
+                    x509.Extension(oid, critical, unrecognized)
+                )
+            else:
+                ext_data = backend._lib.X509V3_EXT_d2i(ext)
+                if ext_data == backend._ffi.NULL:
+                    backend._consume_errors()
+                    raise ValueError(
+                        "The {0} extension is invalid and can't be "
+                        "parsed".format(oid)
+                    )
+
+                value = handler(backend, ext_data)
+                extensions.append(x509.Extension(oid, critical, value))
+
+            seen_oids.add(oid)
+
+        return x509.Extensions(extensions)
+
+
+def _decode_certificate_policies(backend, cp):
+    cp = backend._ffi.cast("Cryptography_STACK_OF_POLICYINFO *", cp)
+    cp = backend._ffi.gc(cp, backend._lib.CERTIFICATEPOLICIES_free)
+
+    num = backend._lib.sk_POLICYINFO_num(cp)
+    certificate_policies = []
+    for i in range(num):
+        qualifiers = None
+        pi = backend._lib.sk_POLICYINFO_value(cp, i)
+        oid = x509.ObjectIdentifier(_obj2txt(backend, pi.policyid))
+        if pi.qualifiers != backend._ffi.NULL:
+            qnum = backend._lib.sk_POLICYQUALINFO_num(pi.qualifiers)
+            qualifiers = []
+            for j in range(qnum):
+                pqi = backend._lib.sk_POLICYQUALINFO_value(
+                    pi.qualifiers, j
+                )
+                pqualid = x509.ObjectIdentifier(
+                    _obj2txt(backend, pqi.pqualid)
+                )
+                if pqualid == CertificatePoliciesOID.CPS_QUALIFIER:
+                    cpsuri = backend._ffi.buffer(
+                        pqi.d.cpsuri.data, pqi.d.cpsuri.length
+                    )[:].decode('ascii')
+                    qualifiers.append(cpsuri)
+                else:
+                    assert pqualid == CertificatePoliciesOID.CPS_USER_NOTICE
+                    user_notice = _decode_user_notice(
+                        backend, pqi.d.usernotice
+                    )
+                    qualifiers.append(user_notice)
+
+        certificate_policies.append(
+            x509.PolicyInformation(oid, qualifiers)
+        )
+
+    return x509.CertificatePolicies(certificate_policies)
+
+
+def _decode_user_notice(backend, un):
+    explicit_text = None
+    notice_reference = None
+
+    if un.exptext != backend._ffi.NULL:
+        explicit_text = _asn1_string_to_utf8(backend, un.exptext)
+
+    if un.noticeref != backend._ffi.NULL:
+        organization = _asn1_string_to_utf8(
+            backend, un.noticeref.organization
+        )
+
+        num = backend._lib.sk_ASN1_INTEGER_num(
+            un.noticeref.noticenos
+        )
+        notice_numbers = []
+        for i in range(num):
+            asn1_int = backend._lib.sk_ASN1_INTEGER_value(
+                un.noticeref.noticenos, i
+            )
+            notice_num = _asn1_integer_to_int(backend, asn1_int)
+            notice_numbers.append(notice_num)
+
+        notice_reference = x509.NoticeReference(
+            organization, notice_numbers
+        )
+
+    return x509.UserNotice(notice_reference, explicit_text)
+
+
+def _decode_basic_constraints(backend, bc_st):
+    basic_constraints = backend._ffi.cast("BASIC_CONSTRAINTS *", bc_st)
+    basic_constraints = backend._ffi.gc(
+        basic_constraints, backend._lib.BASIC_CONSTRAINTS_free
+    )
+    # The byte representation of an ASN.1 boolean true is \xff. OpenSSL
+    # chooses to just map this to its ordinal value, so true is 255 and
+    # false is 0.
+    ca = basic_constraints.ca == 255
+    path_length = _asn1_integer_to_int_or_none(
+        backend, basic_constraints.pathlen
+    )
+
+    return x509.BasicConstraints(ca, path_length)
+
+
+def _decode_subject_key_identifier(backend, asn1_string):
+    asn1_string = backend._ffi.cast("ASN1_OCTET_STRING *", asn1_string)
+    asn1_string = backend._ffi.gc(
+        asn1_string, backend._lib.ASN1_OCTET_STRING_free
+    )
+    return x509.SubjectKeyIdentifier(
+        backend._ffi.buffer(asn1_string.data, asn1_string.length)[:]
+    )
+
+
+def _decode_authority_key_identifier(backend, akid):
+    akid = backend._ffi.cast("AUTHORITY_KEYID *", akid)
+    akid = backend._ffi.gc(akid, backend._lib.AUTHORITY_KEYID_free)
+    key_identifier = None
+    authority_cert_issuer = None
+
+    if akid.keyid != backend._ffi.NULL:
+        key_identifier = backend._ffi.buffer(
+            akid.keyid.data, akid.keyid.length
+        )[:]
+
+    if akid.issuer != backend._ffi.NULL:
+        authority_cert_issuer = _decode_general_names(
+            backend, akid.issuer
+        )
+
+    authority_cert_serial_number = _asn1_integer_to_int_or_none(
+        backend, akid.serial
+    )
+
+    return x509.AuthorityKeyIdentifier(
+        key_identifier, authority_cert_issuer, authority_cert_serial_number
+    )
+
+
+def _decode_authority_information_access(backend, aia):
+    aia = backend._ffi.cast("Cryptography_STACK_OF_ACCESS_DESCRIPTION *", aia)
+    aia = backend._ffi.gc(aia, backend._lib.sk_ACCESS_DESCRIPTION_free)
+    num = backend._lib.sk_ACCESS_DESCRIPTION_num(aia)
+    access_descriptions = []
+    for i in range(num):
+        ad = backend._lib.sk_ACCESS_DESCRIPTION_value(aia, i)
+        backend.openssl_assert(ad.method != backend._ffi.NULL)
+        oid = x509.ObjectIdentifier(_obj2txt(backend, ad.method))
+        backend.openssl_assert(ad.location != backend._ffi.NULL)
+        gn = _decode_general_name(backend, ad.location)
+        access_descriptions.append(x509.AccessDescription(oid, gn))
+
+    return x509.AuthorityInformationAccess(access_descriptions)
+
+
+def _decode_key_usage(backend, bit_string):
+    bit_string = backend._ffi.cast("ASN1_BIT_STRING *", bit_string)
+    bit_string = backend._ffi.gc(bit_string, backend._lib.ASN1_BIT_STRING_free)
+    get_bit = backend._lib.ASN1_BIT_STRING_get_bit
+    digital_signature = get_bit(bit_string, 0) == 1
+    content_commitment = get_bit(bit_string, 1) == 1
+    key_encipherment = get_bit(bit_string, 2) == 1
+    data_encipherment = get_bit(bit_string, 3) == 1
+    key_agreement = get_bit(bit_string, 4) == 1
+    key_cert_sign = get_bit(bit_string, 5) == 1
+    crl_sign = get_bit(bit_string, 6) == 1
+    encipher_only = get_bit(bit_string, 7) == 1
+    decipher_only = get_bit(bit_string, 8) == 1
+    return x509.KeyUsage(
+        digital_signature,
+        content_commitment,
+        key_encipherment,
+        data_encipherment,
+        key_agreement,
+        key_cert_sign,
+        crl_sign,
+        encipher_only,
+        decipher_only
+    )
+
+
+def _decode_general_names_extension(backend, gns):
+    gns = backend._ffi.cast("GENERAL_NAMES *", gns)
+    gns = backend._ffi.gc(gns, backend._lib.GENERAL_NAMES_free)
+    general_names = _decode_general_names(backend, gns)
+    return general_names
+
+
+def _decode_subject_alt_name(backend, ext):
+    return x509.SubjectAlternativeName(
+        _decode_general_names_extension(backend, ext)
+    )
+
+
+def _decode_issuer_alt_name(backend, ext):
+    return x509.IssuerAlternativeName(
+        _decode_general_names_extension(backend, ext)
+    )
+
+
+def _decode_name_constraints(backend, nc):
+    nc = backend._ffi.cast("NAME_CONSTRAINTS *", nc)
+    nc = backend._ffi.gc(nc, backend._lib.NAME_CONSTRAINTS_free)
+    permitted = _decode_general_subtrees(backend, nc.permittedSubtrees)
+    excluded = _decode_general_subtrees(backend, nc.excludedSubtrees)
+    return x509.NameConstraints(
+        permitted_subtrees=permitted, excluded_subtrees=excluded
+    )
+
+
+def _decode_general_subtrees(backend, stack_subtrees):
+    if stack_subtrees == backend._ffi.NULL:
+        return None
+
+    num = backend._lib.sk_GENERAL_SUBTREE_num(stack_subtrees)
+    subtrees = []
+
+    for i in range(num):
+        obj = backend._lib.sk_GENERAL_SUBTREE_value(stack_subtrees, i)
+        backend.openssl_assert(obj != backend._ffi.NULL)
+        name = _decode_general_name(backend, obj.base)
+        subtrees.append(name)
+
+    return subtrees
+
+
+def _decode_policy_constraints(backend, pc):
+    pc = backend._ffi.cast("POLICY_CONSTRAINTS *", pc)
+    pc = backend._ffi.gc(pc, backend._lib.POLICY_CONSTRAINTS_free)
+
+    require_explicit_policy = _asn1_integer_to_int_or_none(
+        backend, pc.requireExplicitPolicy
+    )
+    inhibit_policy_mapping = _asn1_integer_to_int_or_none(
+        backend, pc.inhibitPolicyMapping
+    )
+
+    return x509.PolicyConstraints(
+        require_explicit_policy, inhibit_policy_mapping
+    )
+
+
+def _decode_extended_key_usage(backend, sk):
+    sk = backend._ffi.cast("Cryptography_STACK_OF_ASN1_OBJECT *", sk)
+    sk = backend._ffi.gc(sk, backend._lib.sk_ASN1_OBJECT_free)
+    num = backend._lib.sk_ASN1_OBJECT_num(sk)
+    ekus = []
+
+    for i in range(num):
+        obj = backend._lib.sk_ASN1_OBJECT_value(sk, i)
+        backend.openssl_assert(obj != backend._ffi.NULL)
+        oid = x509.ObjectIdentifier(_obj2txt(backend, obj))
+        ekus.append(oid)
+
+    return x509.ExtendedKeyUsage(ekus)
+
+
+_DISTPOINT_TYPE_FULLNAME = 0
+_DISTPOINT_TYPE_RELATIVENAME = 1
+
+
+def _decode_dist_points(backend, cdps):
+    cdps = backend._ffi.cast("Cryptography_STACK_OF_DIST_POINT *", cdps)
+    cdps = backend._ffi.gc(cdps, backend._lib.CRL_DIST_POINTS_free)
+
+    num = backend._lib.sk_DIST_POINT_num(cdps)
+    dist_points = []
+    for i in range(num):
+        full_name = None
+        relative_name = None
+        crl_issuer = None
+        reasons = None
+        cdp = backend._lib.sk_DIST_POINT_value(cdps, i)
+        if cdp.reasons != backend._ffi.NULL:
+            # We will check each bit from RFC 5280
+            # ReasonFlags ::= BIT STRING {
+            #      unused                  (0),
+            #      keyCompromise           (1),
+            #      cACompromise            (2),
+            #      affiliationChanged      (3),
+            #      superseded              (4),
+            #      cessationOfOperation    (5),
+            #      certificateHold         (6),
+            #      privilegeWithdrawn      (7),
+            #      aACompromise            (8) }
+            reasons = []
+            get_bit = backend._lib.ASN1_BIT_STRING_get_bit
+            if get_bit(cdp.reasons, 1):
+                reasons.append(x509.ReasonFlags.key_compromise)
+
+            if get_bit(cdp.reasons, 2):
+                reasons.append(x509.ReasonFlags.ca_compromise)
+
+            if get_bit(cdp.reasons, 3):
+                reasons.append(x509.ReasonFlags.affiliation_changed)
+
+            if get_bit(cdp.reasons, 4):
+                reasons.append(x509.ReasonFlags.superseded)
+
+            if get_bit(cdp.reasons, 5):
+                reasons.append(x509.ReasonFlags.cessation_of_operation)
+
+            if get_bit(cdp.reasons, 6):
+                reasons.append(x509.ReasonFlags.certificate_hold)
+
+            if get_bit(cdp.reasons, 7):
+                reasons.append(x509.ReasonFlags.privilege_withdrawn)
+
+            if get_bit(cdp.reasons, 8):
+                reasons.append(x509.ReasonFlags.aa_compromise)
+
+            reasons = frozenset(reasons)
+
+        if cdp.CRLissuer != backend._ffi.NULL:
+            crl_issuer = _decode_general_names(backend, cdp.CRLissuer)
+
+        # Certificates may have a crl_issuer/reasons and no distribution
+        # point so make sure it's not null.
+        if cdp.distpoint != backend._ffi.NULL:
+            # Type 0 is fullName, there is no #define for it in the code.
+            if cdp.distpoint.type == _DISTPOINT_TYPE_FULLNAME:
+                full_name = _decode_general_names(
+                    backend, cdp.distpoint.name.fullname
+                )
+            # OpenSSL code doesn't test for a specific type for
+            # relativename, everything that isn't fullname is considered
+            # relativename.  Per RFC 5280:
+            #
+            # DistributionPointName ::= CHOICE {
+            #      fullName                [0]      GeneralNames,
+            #      nameRelativeToCRLIssuer [1]      RelativeDistinguishedName }
+            else:
+                rns = cdp.distpoint.name.relativename
+                rnum = backend._lib.sk_X509_NAME_ENTRY_num(rns)
+                attributes = set()
+                for i in range(rnum):
+                    rn = backend._lib.sk_X509_NAME_ENTRY_value(
+                        rns, i
+                    )
+                    backend.openssl_assert(rn != backend._ffi.NULL)
+                    attributes.add(
+                        _decode_x509_name_entry(backend, rn)
+                    )
+
+                relative_name = x509.RelativeDistinguishedName(attributes)
+
+        dist_points.append(
+            x509.DistributionPoint(
+                full_name, relative_name, reasons, crl_issuer
+            )
+        )
+
+    return dist_points
+
+
+def _decode_crl_distribution_points(backend, cdps):
+    dist_points = _decode_dist_points(backend, cdps)
+    return x509.CRLDistributionPoints(dist_points)
+
+
+def _decode_freshest_crl(backend, cdps):
+    dist_points = _decode_dist_points(backend, cdps)
+    return x509.FreshestCRL(dist_points)
+
+
+def _decode_inhibit_any_policy(backend, asn1_int):
+    asn1_int = backend._ffi.cast("ASN1_INTEGER *", asn1_int)
+    asn1_int = backend._ffi.gc(asn1_int, backend._lib.ASN1_INTEGER_free)
+    skip_certs = _asn1_integer_to_int(backend, asn1_int)
+    return x509.InhibitAnyPolicy(skip_certs)
+
+
+def _decode_precert_signed_certificate_timestamps(backend, asn1_scts):
+    from cryptography.hazmat.backends.openssl.x509 import (
+        _SignedCertificateTimestamp
+    )
+    asn1_scts = backend._ffi.cast("Cryptography_STACK_OF_SCT *", asn1_scts)
+    asn1_scts = backend._ffi.gc(asn1_scts, backend._lib.SCT_LIST_free)
+
+    scts = []
+    for i in range(backend._lib.sk_SCT_num(asn1_scts)):
+        sct = backend._lib.sk_SCT_value(asn1_scts, i)
+
+        scts.append(_SignedCertificateTimestamp(backend, asn1_scts, sct))
+    return x509.PrecertificateSignedCertificateTimestamps(scts)
+
+
+#    CRLReason ::= ENUMERATED {
+#        unspecified             (0),
+#        keyCompromise           (1),
+#        cACompromise            (2),
+#        affiliationChanged      (3),
+#        superseded              (4),
+#        cessationOfOperation    (5),
+#        certificateHold         (6),
+#             -- value 7 is not used
+#        removeFromCRL           (8),
+#        privilegeWithdrawn      (9),
+#        aACompromise           (10) }
+_CRL_ENTRY_REASON_CODE_TO_ENUM = {
+    0: x509.ReasonFlags.unspecified,
+    1: x509.ReasonFlags.key_compromise,
+    2: x509.ReasonFlags.ca_compromise,
+    3: x509.ReasonFlags.affiliation_changed,
+    4: x509.ReasonFlags.superseded,
+    5: x509.ReasonFlags.cessation_of_operation,
+    6: x509.ReasonFlags.certificate_hold,
+    8: x509.ReasonFlags.remove_from_crl,
+    9: x509.ReasonFlags.privilege_withdrawn,
+    10: x509.ReasonFlags.aa_compromise,
+}
+
+
+_CRL_ENTRY_REASON_ENUM_TO_CODE = {
+    x509.ReasonFlags.unspecified: 0,
+    x509.ReasonFlags.key_compromise: 1,
+    x509.ReasonFlags.ca_compromise: 2,
+    x509.ReasonFlags.affiliation_changed: 3,
+    x509.ReasonFlags.superseded: 4,
+    x509.ReasonFlags.cessation_of_operation: 5,
+    x509.ReasonFlags.certificate_hold: 6,
+    x509.ReasonFlags.remove_from_crl: 8,
+    x509.ReasonFlags.privilege_withdrawn: 9,
+    x509.ReasonFlags.aa_compromise: 10
+}
+
+
+def _decode_crl_reason(backend, enum):
+    enum = backend._ffi.cast("ASN1_ENUMERATED *", enum)
+    enum = backend._ffi.gc(enum, backend._lib.ASN1_ENUMERATED_free)
+    code = backend._lib.ASN1_ENUMERATED_get(enum)
+
+    try:
+        return x509.CRLReason(_CRL_ENTRY_REASON_CODE_TO_ENUM[code])
+    except KeyError:
+        raise ValueError("Unsupported reason code: {0}".format(code))
+
+
+def _decode_invalidity_date(backend, inv_date):
+    generalized_time = backend._ffi.cast(
+        "ASN1_GENERALIZEDTIME *", inv_date
+    )
+    generalized_time = backend._ffi.gc(
+        generalized_time, backend._lib.ASN1_GENERALIZEDTIME_free
+    )
+    return x509.InvalidityDate(
+        _parse_asn1_generalized_time(backend, generalized_time)
+    )
+
+
+def _decode_cert_issuer(backend, gns):
+    gns = backend._ffi.cast("GENERAL_NAMES *", gns)
+    gns = backend._ffi.gc(gns, backend._lib.GENERAL_NAMES_free)
+    general_names = _decode_general_names(backend, gns)
+    return x509.CertificateIssuer(general_names)
+
+
+def _asn1_to_der(backend, asn1_type):
+    buf = backend._ffi.new("unsigned char **")
+    res = backend._lib.i2d_ASN1_TYPE(asn1_type, buf)
+    backend.openssl_assert(res >= 0)
+    backend.openssl_assert(buf[0] != backend._ffi.NULL)
+    buf = backend._ffi.gc(
+        buf, lambda buffer: backend._lib.OPENSSL_free(buffer[0])
+    )
+    return backend._ffi.buffer(buf[0], res)[:]
+
+
+def _asn1_integer_to_int(backend, asn1_int):
+    bn = backend._lib.ASN1_INTEGER_to_BN(asn1_int, backend._ffi.NULL)
+    backend.openssl_assert(bn != backend._ffi.NULL)
+    bn = backend._ffi.gc(bn, backend._lib.BN_free)
+    return backend._bn_to_int(bn)
+
+
+def _asn1_integer_to_int_or_none(backend, asn1_int):
+    if asn1_int == backend._ffi.NULL:
+        return None
+    else:
+        return _asn1_integer_to_int(backend, asn1_int)
+
+
+def _asn1_string_to_bytes(backend, asn1_string):
+    return backend._ffi.buffer(asn1_string.data, asn1_string.length)[:]
+
+
+def _asn1_string_to_ascii(backend, asn1_string):
+    return _asn1_string_to_bytes(backend, asn1_string).decode("ascii")
+
+
+def _asn1_string_to_utf8(backend, asn1_string):
+    buf = backend._ffi.new("unsigned char **")
+    res = backend._lib.ASN1_STRING_to_UTF8(buf, asn1_string)
+    if res == -1:
+        raise ValueError(
+            "Unsupported ASN1 string type. Type: {0}".format(asn1_string.type)
+        )
+
+    backend.openssl_assert(buf[0] != backend._ffi.NULL)
+    buf = backend._ffi.gc(
+        buf, lambda buffer: backend._lib.OPENSSL_free(buffer[0])
+    )
+    return backend._ffi.buffer(buf[0], res)[:].decode('utf8')
+
+
+def _parse_asn1_time(backend, asn1_time):
+    backend.openssl_assert(asn1_time != backend._ffi.NULL)
+    generalized_time = backend._lib.ASN1_TIME_to_generalizedtime(
+        asn1_time, backend._ffi.NULL
+    )
+    if generalized_time == backend._ffi.NULL:
+        raise ValueError(
+            "Couldn't parse ASN.1 time as generalizedtime {!r}".format(
+                _asn1_string_to_bytes(backend, asn1_time)
+            )
+        )
+
+    generalized_time = backend._ffi.gc(
+        generalized_time, backend._lib.ASN1_GENERALIZEDTIME_free
+    )
+    return _parse_asn1_generalized_time(backend, generalized_time)
+
+
+def _parse_asn1_generalized_time(backend, generalized_time):
+    time = _asn1_string_to_ascii(
+        backend, backend._ffi.cast("ASN1_STRING *", generalized_time)
+    )
+    return datetime.datetime.strptime(time, "%Y%m%d%H%M%SZ")
+
+
+_EXTENSION_HANDLERS_NO_SCT = {
+    ExtensionOID.BASIC_CONSTRAINTS: _decode_basic_constraints,
+    ExtensionOID.SUBJECT_KEY_IDENTIFIER: _decode_subject_key_identifier,
+    ExtensionOID.KEY_USAGE: _decode_key_usage,
+    ExtensionOID.SUBJECT_ALTERNATIVE_NAME: _decode_subject_alt_name,
+    ExtensionOID.EXTENDED_KEY_USAGE: _decode_extended_key_usage,
+    ExtensionOID.AUTHORITY_KEY_IDENTIFIER: _decode_authority_key_identifier,
+    ExtensionOID.AUTHORITY_INFORMATION_ACCESS: (
+        _decode_authority_information_access
+    ),
+    ExtensionOID.CERTIFICATE_POLICIES: _decode_certificate_policies,
+    ExtensionOID.CRL_DISTRIBUTION_POINTS: _decode_crl_distribution_points,
+    ExtensionOID.FRESHEST_CRL: _decode_freshest_crl,
+    ExtensionOID.OCSP_NO_CHECK: _decode_ocsp_no_check,
+    ExtensionOID.INHIBIT_ANY_POLICY: _decode_inhibit_any_policy,
+    ExtensionOID.ISSUER_ALTERNATIVE_NAME: _decode_issuer_alt_name,
+    ExtensionOID.NAME_CONSTRAINTS: _decode_name_constraints,
+    ExtensionOID.POLICY_CONSTRAINTS: _decode_policy_constraints,
+}
+_EXTENSION_HANDLERS = _EXTENSION_HANDLERS_NO_SCT.copy()
+_EXTENSION_HANDLERS[
+    ExtensionOID.PRECERT_SIGNED_CERTIFICATE_TIMESTAMPS
+] = _decode_precert_signed_certificate_timestamps
+
+
+_REVOKED_EXTENSION_HANDLERS = {
+    CRLEntryExtensionOID.CRL_REASON: _decode_crl_reason,
+    CRLEntryExtensionOID.INVALIDITY_DATE: _decode_invalidity_date,
+    CRLEntryExtensionOID.CERTIFICATE_ISSUER: _decode_cert_issuer,
+}
+
+_CRL_EXTENSION_HANDLERS = {
+    ExtensionOID.CRL_NUMBER: _decode_crl_number,
+    ExtensionOID.DELTA_CRL_INDICATOR: _decode_delta_crl_indicator,
+    ExtensionOID.AUTHORITY_KEY_IDENTIFIER: _decode_authority_key_identifier,
+    ExtensionOID.ISSUER_ALTERNATIVE_NAME: _decode_issuer_alt_name,
+    ExtensionOID.AUTHORITY_INFORMATION_ACCESS: (
+        _decode_authority_information_access
+    ),
+}
+
+_CERTIFICATE_EXTENSION_PARSER_NO_SCT = _X509ExtensionParser(
+    ext_count=lambda backend, x: backend._lib.X509_get_ext_count(x),
+    get_ext=lambda backend, x, i: backend._lib.X509_get_ext(x, i),
+    handlers=_EXTENSION_HANDLERS_NO_SCT
+)
+
+_CERTIFICATE_EXTENSION_PARSER = _X509ExtensionParser(
+    ext_count=lambda backend, x: backend._lib.X509_get_ext_count(x),
+    get_ext=lambda backend, x, i: backend._lib.X509_get_ext(x, i),
+    handlers=_EXTENSION_HANDLERS
+)
+
+_CSR_EXTENSION_PARSER = _X509ExtensionParser(
+    ext_count=lambda backend, x: backend._lib.sk_X509_EXTENSION_num(x),
+    get_ext=lambda backend, x, i: backend._lib.sk_X509_EXTENSION_value(x, i),
+    handlers=_EXTENSION_HANDLERS
+)
+
+_REVOKED_CERTIFICATE_EXTENSION_PARSER = _X509ExtensionParser(
+    ext_count=lambda backend, x: backend._lib.X509_REVOKED_get_ext_count(x),
+    get_ext=lambda backend, x, i: backend._lib.X509_REVOKED_get_ext(x, i),
+    handlers=_REVOKED_EXTENSION_HANDLERS,
+)
+
+_CRL_EXTENSION_PARSER = _X509ExtensionParser(
+    ext_count=lambda backend, x: backend._lib.X509_CRL_get_ext_count(x),
+    get_ext=lambda backend, x, i: backend._lib.X509_CRL_get_ext(x, i),
+    handlers=_CRL_EXTENSION_HANDLERS,
+)

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/dh.py

@@ -0,0 +1,280 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
+from cryptography.hazmat.primitives import serialization
+from cryptography.hazmat.primitives.asymmetric import dh
+
+
+def _dh_params_dup(dh_cdata, backend):
+    lib = backend._lib
+    ffi = backend._ffi
+
+    param_cdata = lib.DHparams_dup(dh_cdata)
+    backend.openssl_assert(param_cdata != ffi.NULL)
+    param_cdata = ffi.gc(param_cdata, lib.DH_free)
+    if lib.CRYPTOGRAPHY_OPENSSL_LESS_THAN_102:
+        # In OpenSSL versions < 1.0.2 or libressl DHparams_dup don't copy q
+        q = ffi.new("BIGNUM **")
+        lib.DH_get0_pqg(dh_cdata, ffi.NULL, q, ffi.NULL)
+        q_dup = lib.BN_dup(q[0])
+        res = lib.DH_set0_pqg(param_cdata, ffi.NULL, q_dup, ffi.NULL)
+        backend.openssl_assert(res == 1)
+
+    return param_cdata
+
+
+def _dh_cdata_to_parameters(dh_cdata, backend):
+    param_cdata = _dh_params_dup(dh_cdata, backend)
+    return _DHParameters(backend, param_cdata)
+
+
+@utils.register_interface(dh.DHParametersWithSerialization)
+class _DHParameters(object):
+    def __init__(self, backend, dh_cdata):
+        self._backend = backend
+        self._dh_cdata = dh_cdata
+
+    def parameter_numbers(self):
+        p = self._backend._ffi.new("BIGNUM **")
+        g = self._backend._ffi.new("BIGNUM **")
+        q = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DH_get0_pqg(self._dh_cdata, p, q, g)
+        self._backend.openssl_assert(p[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(g[0] != self._backend._ffi.NULL)
+        if q[0] == self._backend._ffi.NULL:
+            q_val = None
+        else:
+            q_val = self._backend._bn_to_int(q[0])
+        return dh.DHParameterNumbers(
+            p=self._backend._bn_to_int(p[0]),
+            g=self._backend._bn_to_int(g[0]),
+            q=q_val
+        )
+
+    def generate_private_key(self):
+        return self._backend.generate_dh_private_key(self)
+
+    def parameter_bytes(self, encoding, format):
+        if format is not serialization.ParameterFormat.PKCS3:
+            raise ValueError(
+                "Only PKCS3 serialization is supported"
+            )
+        if not self._backend._lib.Cryptography_HAS_EVP_PKEY_DHX:
+            q = self._backend._ffi.new("BIGNUM **")
+            self._backend._lib.DH_get0_pqg(self._dh_cdata,
+                                           self._backend._ffi.NULL,
+                                           q,
+                                           self._backend._ffi.NULL)
+            if q[0] != self._backend._ffi.NULL:
+                raise UnsupportedAlgorithm(
+                    "DH X9.42 serialization is not supported",
+                    _Reasons.UNSUPPORTED_SERIALIZATION)
+
+        return self._backend._parameter_bytes(
+            encoding,
+            format,
+            self._dh_cdata
+        )
+
+
+def _handle_dh_compute_key_error(errors, backend):
+    lib = backend._lib
+
+    backend.openssl_assert(
+        errors[0]._lib_reason_match(
+            lib.ERR_LIB_DH, lib.DH_R_INVALID_PUBKEY
+        )
+    )
+
+    raise ValueError("Public key value is invalid for this exchange.")
+
+
+def _get_dh_num_bits(backend, dh_cdata):
+    p = backend._ffi.new("BIGNUM **")
+    backend._lib.DH_get0_pqg(dh_cdata, p,
+                             backend._ffi.NULL,
+                             backend._ffi.NULL)
+    backend.openssl_assert(p[0] != backend._ffi.NULL)
+    return backend._lib.BN_num_bits(p[0])
+
+
+@utils.register_interface(dh.DHPrivateKeyWithSerialization)
+class _DHPrivateKey(object):
+    def __init__(self, backend, dh_cdata, evp_pkey):
+        self._backend = backend
+        self._dh_cdata = dh_cdata
+        self._evp_pkey = evp_pkey
+        self._key_size_bytes = self._backend._lib.DH_size(dh_cdata)
+
+    @property
+    def key_size(self):
+        return _get_dh_num_bits(self._backend, self._dh_cdata)
+
+    def private_numbers(self):
+        p = self._backend._ffi.new("BIGNUM **")
+        g = self._backend._ffi.new("BIGNUM **")
+        q = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DH_get0_pqg(self._dh_cdata, p, q, g)
+        self._backend.openssl_assert(p[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(g[0] != self._backend._ffi.NULL)
+        if q[0] == self._backend._ffi.NULL:
+            q_val = None
+        else:
+            q_val = self._backend._bn_to_int(q[0])
+        pub_key = self._backend._ffi.new("BIGNUM **")
+        priv_key = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DH_get0_key(self._dh_cdata, pub_key, priv_key)
+        self._backend.openssl_assert(pub_key[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(priv_key[0] != self._backend._ffi.NULL)
+        return dh.DHPrivateNumbers(
+            public_numbers=dh.DHPublicNumbers(
+                parameter_numbers=dh.DHParameterNumbers(
+                    p=self._backend._bn_to_int(p[0]),
+                    g=self._backend._bn_to_int(g[0]),
+                    q=q_val
+                ),
+                y=self._backend._bn_to_int(pub_key[0])
+            ),
+            x=self._backend._bn_to_int(priv_key[0])
+        )
+
+    def exchange(self, peer_public_key):
+
+        buf = self._backend._ffi.new("unsigned char[]", self._key_size_bytes)
+        pub_key = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DH_get0_key(peer_public_key._dh_cdata, pub_key,
+                                       self._backend._ffi.NULL)
+        self._backend.openssl_assert(pub_key[0] != self._backend._ffi.NULL)
+        res = self._backend._lib.DH_compute_key(
+            buf,
+            pub_key[0],
+            self._dh_cdata
+        )
+
+        if res == -1:
+            errors = self._backend._consume_errors()
+            return _handle_dh_compute_key_error(errors, self._backend)
+        else:
+            self._backend.openssl_assert(res >= 1)
+
+            key = self._backend._ffi.buffer(buf)[:res]
+            pad = self._key_size_bytes - len(key)
+
+            if pad > 0:
+                key = (b"\x00" * pad) + key
+
+            return key
+
+    def public_key(self):
+        dh_cdata = _dh_params_dup(self._dh_cdata, self._backend)
+        pub_key = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DH_get0_key(self._dh_cdata,
+                                       pub_key, self._backend._ffi.NULL)
+        self._backend.openssl_assert(pub_key[0] != self._backend._ffi.NULL)
+        pub_key_dup = self._backend._lib.BN_dup(pub_key[0])
+        self._backend.openssl_assert(pub_key_dup != self._backend._ffi.NULL)
+
+        res = self._backend._lib.DH_set0_key(dh_cdata,
+                                             pub_key_dup,
+                                             self._backend._ffi.NULL)
+        self._backend.openssl_assert(res == 1)
+        evp_pkey = self._backend._dh_cdata_to_evp_pkey(dh_cdata)
+        return _DHPublicKey(self._backend, dh_cdata, evp_pkey)
+
+    def parameters(self):
+        return _dh_cdata_to_parameters(self._dh_cdata, self._backend)
+
+    def private_bytes(self, encoding, format, encryption_algorithm):
+        if format is not serialization.PrivateFormat.PKCS8:
+            raise ValueError(
+                "DH private keys support only PKCS8 serialization"
+            )
+        if not self._backend._lib.Cryptography_HAS_EVP_PKEY_DHX:
+            q = self._backend._ffi.new("BIGNUM **")
+            self._backend._lib.DH_get0_pqg(self._dh_cdata,
+                                           self._backend._ffi.NULL,
+                                           q,
+                                           self._backend._ffi.NULL)
+            if q[0] != self._backend._ffi.NULL:
+                raise UnsupportedAlgorithm(
+                    "DH X9.42 serialization is not supported",
+                    _Reasons.UNSUPPORTED_SERIALIZATION)
+
+        return self._backend._private_key_bytes(
+            encoding,
+            format,
+            encryption_algorithm,
+            self._evp_pkey,
+            self._dh_cdata
+        )
+
+
+@utils.register_interface(dh.DHPublicKeyWithSerialization)
+class _DHPublicKey(object):
+    def __init__(self, backend, dh_cdata, evp_pkey):
+        self._backend = backend
+        self._dh_cdata = dh_cdata
+        self._evp_pkey = evp_pkey
+        self._key_size_bits = _get_dh_num_bits(self._backend, self._dh_cdata)
+
+    @property
+    def key_size(self):
+        return self._key_size_bits
+
+    def public_numbers(self):
+        p = self._backend._ffi.new("BIGNUM **")
+        g = self._backend._ffi.new("BIGNUM **")
+        q = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DH_get0_pqg(self._dh_cdata, p, q, g)
+        self._backend.openssl_assert(p[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(g[0] != self._backend._ffi.NULL)
+        if q[0] == self._backend._ffi.NULL:
+            q_val = None
+        else:
+            q_val = self._backend._bn_to_int(q[0])
+        pub_key = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DH_get0_key(self._dh_cdata,
+                                       pub_key, self._backend._ffi.NULL)
+        self._backend.openssl_assert(pub_key[0] != self._backend._ffi.NULL)
+        return dh.DHPublicNumbers(
+            parameter_numbers=dh.DHParameterNumbers(
+                p=self._backend._bn_to_int(p[0]),
+                g=self._backend._bn_to_int(g[0]),
+                q=q_val
+            ),
+            y=self._backend._bn_to_int(pub_key[0])
+        )
+
+    def parameters(self):
+        return _dh_cdata_to_parameters(self._dh_cdata, self._backend)
+
+    def public_bytes(self, encoding, format):
+        if format is not serialization.PublicFormat.SubjectPublicKeyInfo:
+            raise ValueError(
+                "DH public keys support only "
+                "SubjectPublicKeyInfo serialization"
+            )
+
+        if not self._backend._lib.Cryptography_HAS_EVP_PKEY_DHX:
+            q = self._backend._ffi.new("BIGNUM **")
+            self._backend._lib.DH_get0_pqg(self._dh_cdata,
+                                           self._backend._ffi.NULL,
+                                           q,
+                                           self._backend._ffi.NULL)
+            if q[0] != self._backend._ffi.NULL:
+                raise UnsupportedAlgorithm(
+                    "DH X9.42 serialization is not supported",
+                    _Reasons.UNSUPPORTED_SERIALIZATION)
+
+        return self._backend._public_key_bytes(
+            encoding,
+            format,
+            self,
+            self._evp_pkey,
+            None
+        )

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/dsa.py

@@ -0,0 +1,269 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.exceptions import InvalidSignature
+from cryptography.hazmat.backends.openssl.utils import (
+    _calculate_digest_and_algorithm, _check_not_prehashed,
+    _warn_sign_verify_deprecated
+)
+from cryptography.hazmat.primitives import hashes, serialization
+from cryptography.hazmat.primitives.asymmetric import (
+    AsymmetricSignatureContext, AsymmetricVerificationContext, dsa
+)
+
+
+def _dsa_sig_sign(backend, private_key, data):
+    sig_buf_len = backend._lib.DSA_size(private_key._dsa_cdata)
+    sig_buf = backend._ffi.new("unsigned char[]", sig_buf_len)
+    buflen = backend._ffi.new("unsigned int *")
+
+    # The first parameter passed to DSA_sign is unused by OpenSSL but
+    # must be an integer.
+    res = backend._lib.DSA_sign(
+        0, data, len(data), sig_buf, buflen, private_key._dsa_cdata
+    )
+    backend.openssl_assert(res == 1)
+    backend.openssl_assert(buflen[0])
+
+    return backend._ffi.buffer(sig_buf)[:buflen[0]]
+
+
+def _dsa_sig_verify(backend, public_key, signature, data):
+    # The first parameter passed to DSA_verify is unused by OpenSSL but
+    # must be an integer.
+    res = backend._lib.DSA_verify(
+        0, data, len(data), signature, len(signature), public_key._dsa_cdata
+    )
+
+    if res != 1:
+        backend._consume_errors()
+        raise InvalidSignature
+
+
+@utils.register_interface(AsymmetricVerificationContext)
+class _DSAVerificationContext(object):
+    def __init__(self, backend, public_key, signature, algorithm):
+        self._backend = backend
+        self._public_key = public_key
+        self._signature = signature
+        self._algorithm = algorithm
+
+        self._hash_ctx = hashes.Hash(self._algorithm, self._backend)
+
+    def update(self, data):
+        self._hash_ctx.update(data)
+
+    def verify(self):
+        data_to_verify = self._hash_ctx.finalize()
+
+        _dsa_sig_verify(
+            self._backend, self._public_key, self._signature, data_to_verify
+        )
+
+
+@utils.register_interface(AsymmetricSignatureContext)
+class _DSASignatureContext(object):
+    def __init__(self, backend, private_key, algorithm):
+        self._backend = backend
+        self._private_key = private_key
+        self._algorithm = algorithm
+        self._hash_ctx = hashes.Hash(self._algorithm, self._backend)
+
+    def update(self, data):
+        self._hash_ctx.update(data)
+
+    def finalize(self):
+        data_to_sign = self._hash_ctx.finalize()
+        return _dsa_sig_sign(self._backend, self._private_key, data_to_sign)
+
+
+@utils.register_interface(dsa.DSAParametersWithNumbers)
+class _DSAParameters(object):
+    def __init__(self, backend, dsa_cdata):
+        self._backend = backend
+        self._dsa_cdata = dsa_cdata
+
+    def parameter_numbers(self):
+        p = self._backend._ffi.new("BIGNUM **")
+        q = self._backend._ffi.new("BIGNUM **")
+        g = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DSA_get0_pqg(self._dsa_cdata, p, q, g)
+        self._backend.openssl_assert(p[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(q[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(g[0] != self._backend._ffi.NULL)
+        return dsa.DSAParameterNumbers(
+            p=self._backend._bn_to_int(p[0]),
+            q=self._backend._bn_to_int(q[0]),
+            g=self._backend._bn_to_int(g[0])
+        )
+
+    def generate_private_key(self):
+        return self._backend.generate_dsa_private_key(self)
+
+
+@utils.register_interface(dsa.DSAPrivateKeyWithSerialization)
+class _DSAPrivateKey(object):
+    def __init__(self, backend, dsa_cdata, evp_pkey):
+        self._backend = backend
+        self._dsa_cdata = dsa_cdata
+        self._evp_pkey = evp_pkey
+
+        p = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DSA_get0_pqg(
+            dsa_cdata, p, self._backend._ffi.NULL, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(p[0] != backend._ffi.NULL)
+        self._key_size = self._backend._lib.BN_num_bits(p[0])
+
+    key_size = utils.read_only_property("_key_size")
+
+    def signer(self, signature_algorithm):
+        _warn_sign_verify_deprecated()
+        _check_not_prehashed(signature_algorithm)
+        return _DSASignatureContext(self._backend, self, signature_algorithm)
+
+    def private_numbers(self):
+        p = self._backend._ffi.new("BIGNUM **")
+        q = self._backend._ffi.new("BIGNUM **")
+        g = self._backend._ffi.new("BIGNUM **")
+        pub_key = self._backend._ffi.new("BIGNUM **")
+        priv_key = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DSA_get0_pqg(self._dsa_cdata, p, q, g)
+        self._backend.openssl_assert(p[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(q[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(g[0] != self._backend._ffi.NULL)
+        self._backend._lib.DSA_get0_key(self._dsa_cdata, pub_key, priv_key)
+        self._backend.openssl_assert(pub_key[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(priv_key[0] != self._backend._ffi.NULL)
+        return dsa.DSAPrivateNumbers(
+            public_numbers=dsa.DSAPublicNumbers(
+                parameter_numbers=dsa.DSAParameterNumbers(
+                    p=self._backend._bn_to_int(p[0]),
+                    q=self._backend._bn_to_int(q[0]),
+                    g=self._backend._bn_to_int(g[0])
+                ),
+                y=self._backend._bn_to_int(pub_key[0])
+            ),
+            x=self._backend._bn_to_int(priv_key[0])
+        )
+
+    def public_key(self):
+        dsa_cdata = self._backend._lib.DSAparams_dup(self._dsa_cdata)
+        self._backend.openssl_assert(dsa_cdata != self._backend._ffi.NULL)
+        dsa_cdata = self._backend._ffi.gc(
+            dsa_cdata, self._backend._lib.DSA_free
+        )
+        pub_key = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DSA_get0_key(
+            self._dsa_cdata, pub_key, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(pub_key[0] != self._backend._ffi.NULL)
+        pub_key_dup = self._backend._lib.BN_dup(pub_key[0])
+        res = self._backend._lib.DSA_set0_key(
+            dsa_cdata, pub_key_dup, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(res == 1)
+        evp_pkey = self._backend._dsa_cdata_to_evp_pkey(dsa_cdata)
+        return _DSAPublicKey(self._backend, dsa_cdata, evp_pkey)
+
+    def parameters(self):
+        dsa_cdata = self._backend._lib.DSAparams_dup(self._dsa_cdata)
+        self._backend.openssl_assert(dsa_cdata != self._backend._ffi.NULL)
+        dsa_cdata = self._backend._ffi.gc(
+            dsa_cdata, self._backend._lib.DSA_free
+        )
+        return _DSAParameters(self._backend, dsa_cdata)
+
+    def private_bytes(self, encoding, format, encryption_algorithm):
+        return self._backend._private_key_bytes(
+            encoding,
+            format,
+            encryption_algorithm,
+            self._evp_pkey,
+            self._dsa_cdata
+        )
+
+    def sign(self, data, algorithm):
+        data, algorithm = _calculate_digest_and_algorithm(
+            self._backend, data, algorithm
+        )
+        return _dsa_sig_sign(self._backend, self, data)
+
+
+@utils.register_interface(dsa.DSAPublicKeyWithSerialization)
+class _DSAPublicKey(object):
+    def __init__(self, backend, dsa_cdata, evp_pkey):
+        self._backend = backend
+        self._dsa_cdata = dsa_cdata
+        self._evp_pkey = evp_pkey
+        p = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DSA_get0_pqg(
+            dsa_cdata, p, self._backend._ffi.NULL, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(p[0] != backend._ffi.NULL)
+        self._key_size = self._backend._lib.BN_num_bits(p[0])
+
+    key_size = utils.read_only_property("_key_size")
+
+    def verifier(self, signature, signature_algorithm):
+        _warn_sign_verify_deprecated()
+        if not isinstance(signature, bytes):
+            raise TypeError("signature must be bytes.")
+
+        _check_not_prehashed(signature_algorithm)
+        return _DSAVerificationContext(
+            self._backend, self, signature, signature_algorithm
+        )
+
+    def public_numbers(self):
+        p = self._backend._ffi.new("BIGNUM **")
+        q = self._backend._ffi.new("BIGNUM **")
+        g = self._backend._ffi.new("BIGNUM **")
+        pub_key = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.DSA_get0_pqg(self._dsa_cdata, p, q, g)
+        self._backend.openssl_assert(p[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(q[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(g[0] != self._backend._ffi.NULL)
+        self._backend._lib.DSA_get0_key(
+            self._dsa_cdata, pub_key, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(pub_key[0] != self._backend._ffi.NULL)
+        return dsa.DSAPublicNumbers(
+            parameter_numbers=dsa.DSAParameterNumbers(
+                p=self._backend._bn_to_int(p[0]),
+                q=self._backend._bn_to_int(q[0]),
+                g=self._backend._bn_to_int(g[0])
+            ),
+            y=self._backend._bn_to_int(pub_key[0])
+        )
+
+    def parameters(self):
+        dsa_cdata = self._backend._lib.DSAparams_dup(self._dsa_cdata)
+        dsa_cdata = self._backend._ffi.gc(
+            dsa_cdata, self._backend._lib.DSA_free
+        )
+        return _DSAParameters(self._backend, dsa_cdata)
+
+    def public_bytes(self, encoding, format):
+        if format is serialization.PublicFormat.PKCS1:
+            raise ValueError(
+                "DSA public keys do not support PKCS1 serialization"
+            )
+
+        return self._backend._public_key_bytes(
+            encoding,
+            format,
+            self,
+            self._evp_pkey,
+            None
+        )
+
+    def verify(self, signature, data, algorithm):
+        data, algorithm = _calculate_digest_and_algorithm(
+            self._backend, data, algorithm
+        )
+        return _dsa_sig_verify(self._backend, self, signature, data)

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/ec.py

@@ -0,0 +1,298 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.exceptions import (
+    InvalidSignature, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.openssl.utils import (
+    _calculate_digest_and_algorithm, _check_not_prehashed,
+    _warn_sign_verify_deprecated
+)
+from cryptography.hazmat.primitives import hashes, serialization
+from cryptography.hazmat.primitives.asymmetric import (
+    AsymmetricSignatureContext, AsymmetricVerificationContext, ec
+)
+
+
+def _check_signature_algorithm(signature_algorithm):
+    if not isinstance(signature_algorithm, ec.ECDSA):
+        raise UnsupportedAlgorithm(
+            "Unsupported elliptic curve signature algorithm.",
+            _Reasons.UNSUPPORTED_PUBLIC_KEY_ALGORITHM)
+
+
+def _ec_key_curve_sn(backend, ec_key):
+    group = backend._lib.EC_KEY_get0_group(ec_key)
+    backend.openssl_assert(group != backend._ffi.NULL)
+
+    nid = backend._lib.EC_GROUP_get_curve_name(group)
+    # The following check is to find EC keys with unnamed curves and raise
+    # an error for now.
+    if nid == backend._lib.NID_undef:
+        raise NotImplementedError(
+            "ECDSA certificates with unnamed curves are unsupported "
+            "at this time"
+        )
+
+    curve_name = backend._lib.OBJ_nid2sn(nid)
+    backend.openssl_assert(curve_name != backend._ffi.NULL)
+
+    sn = backend._ffi.string(curve_name).decode('ascii')
+    return sn
+
+
+def _mark_asn1_named_ec_curve(backend, ec_cdata):
+    """
+    Set the named curve flag on the EC_KEY. This causes OpenSSL to
+    serialize EC keys along with their curve OID which makes
+    deserialization easier.
+    """
+
+    backend._lib.EC_KEY_set_asn1_flag(
+        ec_cdata, backend._lib.OPENSSL_EC_NAMED_CURVE
+    )
+
+
+def _sn_to_elliptic_curve(backend, sn):
+    try:
+        return ec._CURVE_TYPES[sn]()
+    except KeyError:
+        raise UnsupportedAlgorithm(
+            "{0} is not a supported elliptic curve".format(sn),
+            _Reasons.UNSUPPORTED_ELLIPTIC_CURVE
+        )
+
+
+def _ecdsa_sig_sign(backend, private_key, data):
+    max_size = backend._lib.ECDSA_size(private_key._ec_key)
+    backend.openssl_assert(max_size > 0)
+
+    sigbuf = backend._ffi.new("unsigned char[]", max_size)
+    siglen_ptr = backend._ffi.new("unsigned int[]", 1)
+    res = backend._lib.ECDSA_sign(
+        0, data, len(data), sigbuf, siglen_ptr, private_key._ec_key
+    )
+    backend.openssl_assert(res == 1)
+    return backend._ffi.buffer(sigbuf)[:siglen_ptr[0]]
+
+
+def _ecdsa_sig_verify(backend, public_key, signature, data):
+    res = backend._lib.ECDSA_verify(
+        0, data, len(data), signature, len(signature), public_key._ec_key
+    )
+    if res != 1:
+        backend._consume_errors()
+        raise InvalidSignature
+
+
+@utils.register_interface(AsymmetricSignatureContext)
+class _ECDSASignatureContext(object):
+    def __init__(self, backend, private_key, algorithm):
+        self._backend = backend
+        self._private_key = private_key
+        self._digest = hashes.Hash(algorithm, backend)
+
+    def update(self, data):
+        self._digest.update(data)
+
+    def finalize(self):
+        digest = self._digest.finalize()
+
+        return _ecdsa_sig_sign(self._backend, self._private_key, digest)
+
+
+@utils.register_interface(AsymmetricVerificationContext)
+class _ECDSAVerificationContext(object):
+    def __init__(self, backend, public_key, signature, algorithm):
+        self._backend = backend
+        self._public_key = public_key
+        self._signature = signature
+        self._digest = hashes.Hash(algorithm, backend)
+
+    def update(self, data):
+        self._digest.update(data)
+
+    def verify(self):
+        digest = self._digest.finalize()
+        _ecdsa_sig_verify(
+            self._backend, self._public_key, self._signature, digest
+        )
+
+
+@utils.register_interface(ec.EllipticCurvePrivateKeyWithSerialization)
+class _EllipticCurvePrivateKey(object):
+    def __init__(self, backend, ec_key_cdata, evp_pkey):
+        self._backend = backend
+        _mark_asn1_named_ec_curve(backend, ec_key_cdata)
+        self._ec_key = ec_key_cdata
+        self._evp_pkey = evp_pkey
+
+        sn = _ec_key_curve_sn(backend, ec_key_cdata)
+        self._curve = _sn_to_elliptic_curve(backend, sn)
+
+    curve = utils.read_only_property("_curve")
+
+    @property
+    def key_size(self):
+        return self.curve.key_size
+
+    def signer(self, signature_algorithm):
+        _warn_sign_verify_deprecated()
+        _check_signature_algorithm(signature_algorithm)
+        _check_not_prehashed(signature_algorithm.algorithm)
+        return _ECDSASignatureContext(
+            self._backend, self, signature_algorithm.algorithm
+        )
+
+    def exchange(self, algorithm, peer_public_key):
+        if not (
+            self._backend.elliptic_curve_exchange_algorithm_supported(
+                algorithm, self.curve
+            )
+        ):
+            raise UnsupportedAlgorithm(
+                "This backend does not support the ECDH algorithm.",
+                _Reasons.UNSUPPORTED_EXCHANGE_ALGORITHM
+            )
+
+        if peer_public_key.curve.name != self.curve.name:
+            raise ValueError(
+                "peer_public_key and self are not on the same curve"
+            )
+
+        group = self._backend._lib.EC_KEY_get0_group(self._ec_key)
+        z_len = (self._backend._lib.EC_GROUP_get_degree(group) + 7) // 8
+        self._backend.openssl_assert(z_len > 0)
+        z_buf = self._backend._ffi.new("uint8_t[]", z_len)
+        peer_key = self._backend._lib.EC_KEY_get0_public_key(
+            peer_public_key._ec_key
+        )
+
+        r = self._backend._lib.ECDH_compute_key(
+            z_buf, z_len, peer_key, self._ec_key, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(r > 0)
+        return self._backend._ffi.buffer(z_buf)[:z_len]
+
+    def public_key(self):
+        group = self._backend._lib.EC_KEY_get0_group(self._ec_key)
+        self._backend.openssl_assert(group != self._backend._ffi.NULL)
+
+        curve_nid = self._backend._lib.EC_GROUP_get_curve_name(group)
+
+        public_ec_key = self._backend._lib.EC_KEY_new_by_curve_name(curve_nid)
+        self._backend.openssl_assert(public_ec_key != self._backend._ffi.NULL)
+        public_ec_key = self._backend._ffi.gc(
+            public_ec_key, self._backend._lib.EC_KEY_free
+        )
+
+        point = self._backend._lib.EC_KEY_get0_public_key(self._ec_key)
+        self._backend.openssl_assert(point != self._backend._ffi.NULL)
+
+        res = self._backend._lib.EC_KEY_set_public_key(public_ec_key, point)
+        self._backend.openssl_assert(res == 1)
+
+        evp_pkey = self._backend._ec_cdata_to_evp_pkey(public_ec_key)
+
+        return _EllipticCurvePublicKey(self._backend, public_ec_key, evp_pkey)
+
+    def private_numbers(self):
+        bn = self._backend._lib.EC_KEY_get0_private_key(self._ec_key)
+        private_value = self._backend._bn_to_int(bn)
+        return ec.EllipticCurvePrivateNumbers(
+            private_value=private_value,
+            public_numbers=self.public_key().public_numbers()
+        )
+
+    def private_bytes(self, encoding, format, encryption_algorithm):
+        return self._backend._private_key_bytes(
+            encoding,
+            format,
+            encryption_algorithm,
+            self._evp_pkey,
+            self._ec_key
+        )
+
+    def sign(self, data, signature_algorithm):
+        _check_signature_algorithm(signature_algorithm)
+        data, algorithm = _calculate_digest_and_algorithm(
+            self._backend, data, signature_algorithm._algorithm
+        )
+        return _ecdsa_sig_sign(self._backend, self, data)
+
+
+@utils.register_interface(ec.EllipticCurvePublicKeyWithSerialization)
+class _EllipticCurvePublicKey(object):
+    def __init__(self, backend, ec_key_cdata, evp_pkey):
+        self._backend = backend
+        _mark_asn1_named_ec_curve(backend, ec_key_cdata)
+        self._ec_key = ec_key_cdata
+        self._evp_pkey = evp_pkey
+
+        sn = _ec_key_curve_sn(backend, ec_key_cdata)
+        self._curve = _sn_to_elliptic_curve(backend, sn)
+
+    curve = utils.read_only_property("_curve")
+
+    @property
+    def key_size(self):
+        return self.curve.key_size
+
+    def verifier(self, signature, signature_algorithm):
+        _warn_sign_verify_deprecated()
+        if not isinstance(signature, bytes):
+            raise TypeError("signature must be bytes.")
+
+        _check_signature_algorithm(signature_algorithm)
+        _check_not_prehashed(signature_algorithm.algorithm)
+        return _ECDSAVerificationContext(
+            self._backend, self, signature, signature_algorithm.algorithm
+        )
+
+    def public_numbers(self):
+        get_func, group = (
+            self._backend._ec_key_determine_group_get_func(self._ec_key)
+        )
+        point = self._backend._lib.EC_KEY_get0_public_key(self._ec_key)
+        self._backend.openssl_assert(point != self._backend._ffi.NULL)
+
+        with self._backend._tmp_bn_ctx() as bn_ctx:
+            bn_x = self._backend._lib.BN_CTX_get(bn_ctx)
+            bn_y = self._backend._lib.BN_CTX_get(bn_ctx)
+
+            res = get_func(group, point, bn_x, bn_y, bn_ctx)
+            self._backend.openssl_assert(res == 1)
+
+            x = self._backend._bn_to_int(bn_x)
+            y = self._backend._bn_to_int(bn_y)
+
+        return ec.EllipticCurvePublicNumbers(
+            x=x,
+            y=y,
+            curve=self._curve
+        )
+
+    def public_bytes(self, encoding, format):
+        if format is serialization.PublicFormat.PKCS1:
+            raise ValueError(
+                "EC public keys do not support PKCS1 serialization"
+            )
+
+        return self._backend._public_key_bytes(
+            encoding,
+            format,
+            self,
+            self._evp_pkey,
+            None
+        )
+
+    def verify(self, signature, data, signature_algorithm):
+        _check_signature_algorithm(signature_algorithm)
+        data, algorithm = _calculate_digest_and_algorithm(
+            self._backend, data, signature_algorithm._algorithm
+        )
+        _ecdsa_sig_verify(self._backend, self, signature, data)

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/encode_asn1.py

@@ -0,0 +1,611 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import calendar
+import ipaddress
+
+import six
+
+from cryptography import utils, x509
+from cryptography.hazmat.backends.openssl.decode_asn1 import (
+    _CRL_ENTRY_REASON_ENUM_TO_CODE, _DISTPOINT_TYPE_FULLNAME,
+    _DISTPOINT_TYPE_RELATIVENAME
+)
+from cryptography.x509.name import _ASN1Type
+from cryptography.x509.oid import CRLEntryExtensionOID, ExtensionOID
+
+
+def _encode_asn1_int(backend, x):
+    """
+    Converts a python integer to an ASN1_INTEGER. The returned ASN1_INTEGER
+    will not be garbage collected (to support adding them to structs that take
+    ownership of the object). Be sure to register it for GC if it will be
+    discarded after use.
+
+    """
+    # Convert Python integer to OpenSSL "bignum" in case value exceeds
+    # machine's native integer limits (note: `int_to_bn` doesn't automatically
+    # GC).
+    i = backend._int_to_bn(x)
+    i = backend._ffi.gc(i, backend._lib.BN_free)
+
+    # Wrap in an ASN.1 integer.  Don't GC -- as documented.
+    i = backend._lib.BN_to_ASN1_INTEGER(i, backend._ffi.NULL)
+    backend.openssl_assert(i != backend._ffi.NULL)
+    return i
+
+
+def _encode_asn1_int_gc(backend, x):
+    i = _encode_asn1_int(backend, x)
+    i = backend._ffi.gc(i, backend._lib.ASN1_INTEGER_free)
+    return i
+
+
+def _encode_asn1_str(backend, data, length):
+    """
+    Create an ASN1_OCTET_STRING from a Python byte string.
+    """
+    s = backend._lib.ASN1_OCTET_STRING_new()
+    res = backend._lib.ASN1_OCTET_STRING_set(s, data, length)
+    backend.openssl_assert(res == 1)
+    return s
+
+
+def _encode_asn1_utf8_str(backend, string):
+    """
+    Create an ASN1_UTF8STRING from a Python unicode string.
+    This object will be an ASN1_STRING with UTF8 type in OpenSSL and
+    can be decoded with ASN1_STRING_to_UTF8.
+    """
+    s = backend._lib.ASN1_UTF8STRING_new()
+    res = backend._lib.ASN1_STRING_set(
+        s, string.encode("utf8"), len(string.encode("utf8"))
+    )
+    backend.openssl_assert(res == 1)
+    return s
+
+
+def _encode_asn1_str_gc(backend, data, length):
+    s = _encode_asn1_str(backend, data, length)
+    s = backend._ffi.gc(s, backend._lib.ASN1_OCTET_STRING_free)
+    return s
+
+
+def _encode_inhibit_any_policy(backend, inhibit_any_policy):
+    return _encode_asn1_int_gc(backend, inhibit_any_policy.skip_certs)
+
+
+def _encode_name(backend, name):
+    """
+    The X509_NAME created will not be gc'd. Use _encode_name_gc if needed.
+    """
+    subject = backend._lib.X509_NAME_new()
+    for rdn in name.rdns:
+        set_flag = 0  # indicate whether to add to last RDN or create new RDN
+        for attribute in rdn:
+            name_entry = _encode_name_entry(backend, attribute)
+            # X509_NAME_add_entry dups the object so we need to gc this copy
+            name_entry = backend._ffi.gc(
+                name_entry, backend._lib.X509_NAME_ENTRY_free
+            )
+            res = backend._lib.X509_NAME_add_entry(
+                subject, name_entry, -1, set_flag)
+            backend.openssl_assert(res == 1)
+            set_flag = -1
+    return subject
+
+
+def _encode_name_gc(backend, attributes):
+    subject = _encode_name(backend, attributes)
+    subject = backend._ffi.gc(subject, backend._lib.X509_NAME_free)
+    return subject
+
+
+def _encode_sk_name_entry(backend, attributes):
+    """
+    The sk_X509_NAME_ENTRY created will not be gc'd.
+    """
+    stack = backend._lib.sk_X509_NAME_ENTRY_new_null()
+    for attribute in attributes:
+        name_entry = _encode_name_entry(backend, attribute)
+        res = backend._lib.sk_X509_NAME_ENTRY_push(stack, name_entry)
+        backend.openssl_assert(res == 1)
+    return stack
+
+
+def _encode_name_entry(backend, attribute):
+    if attribute._type is _ASN1Type.BMPString:
+        value = attribute.value.encode('utf_16_be')
+    else:
+        value = attribute.value.encode('utf8')
+
+    obj = _txt2obj_gc(backend, attribute.oid.dotted_string)
+
+    name_entry = backend._lib.X509_NAME_ENTRY_create_by_OBJ(
+        backend._ffi.NULL, obj, attribute._type.value, value, len(value)
+    )
+    return name_entry
+
+
+def _encode_crl_number_delta_crl_indicator(backend, ext):
+    return _encode_asn1_int_gc(backend, ext.crl_number)
+
+
+def _encode_crl_reason(backend, crl_reason):
+    asn1enum = backend._lib.ASN1_ENUMERATED_new()
+    backend.openssl_assert(asn1enum != backend._ffi.NULL)
+    asn1enum = backend._ffi.gc(asn1enum, backend._lib.ASN1_ENUMERATED_free)
+    res = backend._lib.ASN1_ENUMERATED_set(
+        asn1enum, _CRL_ENTRY_REASON_ENUM_TO_CODE[crl_reason.reason]
+    )
+    backend.openssl_assert(res == 1)
+
+    return asn1enum
+
+
+def _encode_invalidity_date(backend, invalidity_date):
+    time = backend._lib.ASN1_GENERALIZEDTIME_set(
+        backend._ffi.NULL, calendar.timegm(
+            invalidity_date.invalidity_date.timetuple()
+        )
+    )
+    backend.openssl_assert(time != backend._ffi.NULL)
+    time = backend._ffi.gc(time, backend._lib.ASN1_GENERALIZEDTIME_free)
+
+    return time
+
+
+def _encode_certificate_policies(backend, certificate_policies):
+    cp = backend._lib.sk_POLICYINFO_new_null()
+    backend.openssl_assert(cp != backend._ffi.NULL)
+    cp = backend._ffi.gc(cp, backend._lib.sk_POLICYINFO_free)
+    for policy_info in certificate_policies:
+        pi = backend._lib.POLICYINFO_new()
+        backend.openssl_assert(pi != backend._ffi.NULL)
+        res = backend._lib.sk_POLICYINFO_push(cp, pi)
+        backend.openssl_assert(res >= 1)
+        oid = _txt2obj(backend, policy_info.policy_identifier.dotted_string)
+        pi.policyid = oid
+        if policy_info.policy_qualifiers:
+            pqis = backend._lib.sk_POLICYQUALINFO_new_null()
+            backend.openssl_assert(pqis != backend._ffi.NULL)
+            for qualifier in policy_info.policy_qualifiers:
+                pqi = backend._lib.POLICYQUALINFO_new()
+                backend.openssl_assert(pqi != backend._ffi.NULL)
+                res = backend._lib.sk_POLICYQUALINFO_push(pqis, pqi)
+                backend.openssl_assert(res >= 1)
+                if isinstance(qualifier, six.text_type):
+                    pqi.pqualid = _txt2obj(
+                        backend, x509.OID_CPS_QUALIFIER.dotted_string
+                    )
+                    pqi.d.cpsuri = _encode_asn1_str(
+                        backend,
+                        qualifier.encode("ascii"),
+                        len(qualifier.encode("ascii"))
+                    )
+                else:
+                    assert isinstance(qualifier, x509.UserNotice)
+                    pqi.pqualid = _txt2obj(
+                        backend, x509.OID_CPS_USER_NOTICE.dotted_string
+                    )
+                    un = backend._lib.USERNOTICE_new()
+                    backend.openssl_assert(un != backend._ffi.NULL)
+                    pqi.d.usernotice = un
+                    if qualifier.explicit_text:
+                        un.exptext = _encode_asn1_utf8_str(
+                            backend, qualifier.explicit_text
+                        )
+
+                    un.noticeref = _encode_notice_reference(
+                        backend, qualifier.notice_reference
+                    )
+
+            pi.qualifiers = pqis
+
+    return cp
+
+
+def _encode_notice_reference(backend, notice):
+    if notice is None:
+        return backend._ffi.NULL
+    else:
+        nr = backend._lib.NOTICEREF_new()
+        backend.openssl_assert(nr != backend._ffi.NULL)
+        # organization is a required field
+        nr.organization = _encode_asn1_utf8_str(backend, notice.organization)
+
+        notice_stack = backend._lib.sk_ASN1_INTEGER_new_null()
+        nr.noticenos = notice_stack
+        for number in notice.notice_numbers:
+            num = _encode_asn1_int(backend, number)
+            res = backend._lib.sk_ASN1_INTEGER_push(notice_stack, num)
+            backend.openssl_assert(res >= 1)
+
+        return nr
+
+
+def _txt2obj(backend, name):
+    """
+    Converts a Python string with an ASN.1 object ID in dotted form to a
+    ASN1_OBJECT.
+    """
+    name = name.encode('ascii')
+    obj = backend._lib.OBJ_txt2obj(name, 1)
+    backend.openssl_assert(obj != backend._ffi.NULL)
+    return obj
+
+
+def _txt2obj_gc(backend, name):
+    obj = _txt2obj(backend, name)
+    obj = backend._ffi.gc(obj, backend._lib.ASN1_OBJECT_free)
+    return obj
+
+
+def _encode_ocsp_nocheck(backend, ext):
+    """
+    The OCSP No Check extension is defined as a null ASN.1 value embedded in
+    an ASN.1 string.
+    """
+    return _encode_asn1_str_gc(backend, b"\x05\x00", 2)
+
+
+def _encode_key_usage(backend, key_usage):
+    set_bit = backend._lib.ASN1_BIT_STRING_set_bit
+    ku = backend._lib.ASN1_BIT_STRING_new()
+    ku = backend._ffi.gc(ku, backend._lib.ASN1_BIT_STRING_free)
+    res = set_bit(ku, 0, key_usage.digital_signature)
+    backend.openssl_assert(res == 1)
+    res = set_bit(ku, 1, key_usage.content_commitment)
+    backend.openssl_assert(res == 1)
+    res = set_bit(ku, 2, key_usage.key_encipherment)
+    backend.openssl_assert(res == 1)
+    res = set_bit(ku, 3, key_usage.data_encipherment)
+    backend.openssl_assert(res == 1)
+    res = set_bit(ku, 4, key_usage.key_agreement)
+    backend.openssl_assert(res == 1)
+    res = set_bit(ku, 5, key_usage.key_cert_sign)
+    backend.openssl_assert(res == 1)
+    res = set_bit(ku, 6, key_usage.crl_sign)
+    backend.openssl_assert(res == 1)
+    if key_usage.key_agreement:
+        res = set_bit(ku, 7, key_usage.encipher_only)
+        backend.openssl_assert(res == 1)
+        res = set_bit(ku, 8, key_usage.decipher_only)
+        backend.openssl_assert(res == 1)
+    else:
+        res = set_bit(ku, 7, 0)
+        backend.openssl_assert(res == 1)
+        res = set_bit(ku, 8, 0)
+        backend.openssl_assert(res == 1)
+
+    return ku
+
+
+def _encode_authority_key_identifier(backend, authority_keyid):
+    akid = backend._lib.AUTHORITY_KEYID_new()
+    backend.openssl_assert(akid != backend._ffi.NULL)
+    akid = backend._ffi.gc(akid, backend._lib.AUTHORITY_KEYID_free)
+    if authority_keyid.key_identifier is not None:
+        akid.keyid = _encode_asn1_str(
+            backend,
+            authority_keyid.key_identifier,
+            len(authority_keyid.key_identifier)
+        )
+
+    if authority_keyid.authority_cert_issuer is not None:
+        akid.issuer = _encode_general_names(
+            backend, authority_keyid.authority_cert_issuer
+        )
+
+    if authority_keyid.authority_cert_serial_number is not None:
+        akid.serial = _encode_asn1_int(
+            backend, authority_keyid.authority_cert_serial_number
+        )
+
+    return akid
+
+
+def _encode_basic_constraints(backend, basic_constraints):
+    constraints = backend._lib.BASIC_CONSTRAINTS_new()
+    constraints = backend._ffi.gc(
+        constraints, backend._lib.BASIC_CONSTRAINTS_free
+    )
+    constraints.ca = 255 if basic_constraints.ca else 0
+    if basic_constraints.ca and basic_constraints.path_length is not None:
+        constraints.pathlen = _encode_asn1_int(
+            backend, basic_constraints.path_length
+        )
+
+    return constraints
+
+
+def _encode_authority_information_access(backend, authority_info_access):
+    aia = backend._lib.sk_ACCESS_DESCRIPTION_new_null()
+    backend.openssl_assert(aia != backend._ffi.NULL)
+    aia = backend._ffi.gc(
+        aia, backend._lib.sk_ACCESS_DESCRIPTION_free
+    )
+    for access_description in authority_info_access:
+        ad = backend._lib.ACCESS_DESCRIPTION_new()
+        method = _txt2obj(
+            backend, access_description.access_method.dotted_string
+        )
+        gn = _encode_general_name(backend, access_description.access_location)
+        ad.method = method
+        ad.location = gn
+        res = backend._lib.sk_ACCESS_DESCRIPTION_push(aia, ad)
+        backend.openssl_assert(res >= 1)
+
+    return aia
+
+
+def _encode_general_names(backend, names):
+    general_names = backend._lib.GENERAL_NAMES_new()
+    backend.openssl_assert(general_names != backend._ffi.NULL)
+    for name in names:
+        gn = _encode_general_name(backend, name)
+        res = backend._lib.sk_GENERAL_NAME_push(general_names, gn)
+        backend.openssl_assert(res != 0)
+
+    return general_names
+
+
+def _encode_alt_name(backend, san):
+    general_names = _encode_general_names(backend, san)
+    general_names = backend._ffi.gc(
+        general_names, backend._lib.GENERAL_NAMES_free
+    )
+    return general_names
+
+
+def _encode_subject_key_identifier(backend, ski):
+    return _encode_asn1_str_gc(backend, ski.digest, len(ski.digest))
+
+
+def _encode_general_name(backend, name):
+    if isinstance(name, x509.DNSName):
+        gn = backend._lib.GENERAL_NAME_new()
+        backend.openssl_assert(gn != backend._ffi.NULL)
+        gn.type = backend._lib.GEN_DNS
+
+        ia5 = backend._lib.ASN1_IA5STRING_new()
+        backend.openssl_assert(ia5 != backend._ffi.NULL)
+        # ia5strings are supposed to be ITU T.50 but to allow round-tripping
+        # of broken certs that encode utf8 we'll encode utf8 here too.
+        value = name.value.encode("utf8")
+
+        res = backend._lib.ASN1_STRING_set(ia5, value, len(value))
+        backend.openssl_assert(res == 1)
+        gn.d.dNSName = ia5
+    elif isinstance(name, x509.RegisteredID):
+        gn = backend._lib.GENERAL_NAME_new()
+        backend.openssl_assert(gn != backend._ffi.NULL)
+        gn.type = backend._lib.GEN_RID
+        obj = backend._lib.OBJ_txt2obj(
+            name.value.dotted_string.encode('ascii'), 1
+        )
+        backend.openssl_assert(obj != backend._ffi.NULL)
+        gn.d.registeredID = obj
+    elif isinstance(name, x509.DirectoryName):
+        gn = backend._lib.GENERAL_NAME_new()
+        backend.openssl_assert(gn != backend._ffi.NULL)
+        dir_name = _encode_name(backend, name.value)
+        gn.type = backend._lib.GEN_DIRNAME
+        gn.d.directoryName = dir_name
+    elif isinstance(name, x509.IPAddress):
+        gn = backend._lib.GENERAL_NAME_new()
+        backend.openssl_assert(gn != backend._ffi.NULL)
+        if isinstance(name.value, ipaddress.IPv4Network):
+            packed = (
+                name.value.network_address.packed +
+                utils.int_to_bytes(((1 << 32) - name.value.num_addresses), 4)
+            )
+        elif isinstance(name.value, ipaddress.IPv6Network):
+            packed = (
+                name.value.network_address.packed +
+                utils.int_to_bytes((1 << 128) - name.value.num_addresses, 16)
+            )
+        else:
+            packed = name.value.packed
+        ipaddr = _encode_asn1_str(backend, packed, len(packed))
+        gn.type = backend._lib.GEN_IPADD
+        gn.d.iPAddress = ipaddr
+    elif isinstance(name, x509.OtherName):
+        gn = backend._lib.GENERAL_NAME_new()
+        backend.openssl_assert(gn != backend._ffi.NULL)
+        other_name = backend._lib.OTHERNAME_new()
+        backend.openssl_assert(other_name != backend._ffi.NULL)
+
+        type_id = backend._lib.OBJ_txt2obj(
+            name.type_id.dotted_string.encode('ascii'), 1
+        )
+        backend.openssl_assert(type_id != backend._ffi.NULL)
+        data = backend._ffi.new("unsigned char[]", name.value)
+        data_ptr_ptr = backend._ffi.new("unsigned char **")
+        data_ptr_ptr[0] = data
+        value = backend._lib.d2i_ASN1_TYPE(
+            backend._ffi.NULL, data_ptr_ptr, len(name.value)
+        )
+        if value == backend._ffi.NULL:
+            backend._consume_errors()
+            raise ValueError("Invalid ASN.1 data")
+        other_name.type_id = type_id
+        other_name.value = value
+        gn.type = backend._lib.GEN_OTHERNAME
+        gn.d.otherName = other_name
+    elif isinstance(name, x509.RFC822Name):
+        gn = backend._lib.GENERAL_NAME_new()
+        backend.openssl_assert(gn != backend._ffi.NULL)
+        # ia5strings are supposed to be ITU T.50 but to allow round-tripping
+        # of broken certs that encode utf8 we'll encode utf8 here too.
+        data = name.value.encode("utf8")
+        asn1_str = _encode_asn1_str(backend, data, len(data))
+        gn.type = backend._lib.GEN_EMAIL
+        gn.d.rfc822Name = asn1_str
+    elif isinstance(name, x509.UniformResourceIdentifier):
+        gn = backend._lib.GENERAL_NAME_new()
+        backend.openssl_assert(gn != backend._ffi.NULL)
+        # ia5strings are supposed to be ITU T.50 but to allow round-tripping
+        # of broken certs that encode utf8 we'll encode utf8 here too.
+        data = name.value.encode("utf8")
+        asn1_str = _encode_asn1_str(backend, data, len(data))
+        gn.type = backend._lib.GEN_URI
+        gn.d.uniformResourceIdentifier = asn1_str
+    else:
+        raise ValueError(
+            "{0} is an unknown GeneralName type".format(name)
+        )
+
+    return gn
+
+
+def _encode_extended_key_usage(backend, extended_key_usage):
+    eku = backend._lib.sk_ASN1_OBJECT_new_null()
+    eku = backend._ffi.gc(eku, backend._lib.sk_ASN1_OBJECT_free)
+    for oid in extended_key_usage:
+        obj = _txt2obj(backend, oid.dotted_string)
+        res = backend._lib.sk_ASN1_OBJECT_push(eku, obj)
+        backend.openssl_assert(res >= 1)
+
+    return eku
+
+
+_CRLREASONFLAGS = {
+    x509.ReasonFlags.key_compromise: 1,
+    x509.ReasonFlags.ca_compromise: 2,
+    x509.ReasonFlags.affiliation_changed: 3,
+    x509.ReasonFlags.superseded: 4,
+    x509.ReasonFlags.cessation_of_operation: 5,
+    x509.ReasonFlags.certificate_hold: 6,
+    x509.ReasonFlags.privilege_withdrawn: 7,
+    x509.ReasonFlags.aa_compromise: 8,
+}
+
+
+def _encode_cdps_freshest_crl(backend, cdps):
+    cdp = backend._lib.sk_DIST_POINT_new_null()
+    cdp = backend._ffi.gc(cdp, backend._lib.sk_DIST_POINT_free)
+    for point in cdps:
+        dp = backend._lib.DIST_POINT_new()
+        backend.openssl_assert(dp != backend._ffi.NULL)
+
+        if point.reasons:
+            bitmask = backend._lib.ASN1_BIT_STRING_new()
+            backend.openssl_assert(bitmask != backend._ffi.NULL)
+            dp.reasons = bitmask
+            for reason in point.reasons:
+                res = backend._lib.ASN1_BIT_STRING_set_bit(
+                    bitmask, _CRLREASONFLAGS[reason], 1
+                )
+                backend.openssl_assert(res == 1)
+
+        if point.full_name:
+            dpn = backend._lib.DIST_POINT_NAME_new()
+            backend.openssl_assert(dpn != backend._ffi.NULL)
+            dpn.type = _DISTPOINT_TYPE_FULLNAME
+            dpn.name.fullname = _encode_general_names(backend, point.full_name)
+            dp.distpoint = dpn
+
+        if point.relative_name:
+            dpn = backend._lib.DIST_POINT_NAME_new()
+            backend.openssl_assert(dpn != backend._ffi.NULL)
+            dpn.type = _DISTPOINT_TYPE_RELATIVENAME
+            relativename = _encode_sk_name_entry(backend, point.relative_name)
+            backend.openssl_assert(relativename != backend._ffi.NULL)
+            dpn.name.relativename = relativename
+            dp.distpoint = dpn
+
+        if point.crl_issuer:
+            dp.CRLissuer = _encode_general_names(backend, point.crl_issuer)
+
+        res = backend._lib.sk_DIST_POINT_push(cdp, dp)
+        backend.openssl_assert(res >= 1)
+
+    return cdp
+
+
+def _encode_name_constraints(backend, name_constraints):
+    nc = backend._lib.NAME_CONSTRAINTS_new()
+    backend.openssl_assert(nc != backend._ffi.NULL)
+    nc = backend._ffi.gc(nc, backend._lib.NAME_CONSTRAINTS_free)
+    permitted = _encode_general_subtree(
+        backend, name_constraints.permitted_subtrees
+    )
+    nc.permittedSubtrees = permitted
+    excluded = _encode_general_subtree(
+        backend, name_constraints.excluded_subtrees
+    )
+    nc.excludedSubtrees = excluded
+
+    return nc
+
+
+def _encode_policy_constraints(backend, policy_constraints):
+    pc = backend._lib.POLICY_CONSTRAINTS_new()
+    backend.openssl_assert(pc != backend._ffi.NULL)
+    pc = backend._ffi.gc(pc, backend._lib.POLICY_CONSTRAINTS_free)
+    if policy_constraints.require_explicit_policy is not None:
+        pc.requireExplicitPolicy = _encode_asn1_int(
+            backend, policy_constraints.require_explicit_policy
+        )
+
+    if policy_constraints.inhibit_policy_mapping is not None:
+        pc.inhibitPolicyMapping = _encode_asn1_int(
+            backend, policy_constraints.inhibit_policy_mapping
+        )
+
+    return pc
+
+
+def _encode_general_subtree(backend, subtrees):
+    if subtrees is None:
+        return backend._ffi.NULL
+    else:
+        general_subtrees = backend._lib.sk_GENERAL_SUBTREE_new_null()
+        for name in subtrees:
+            gs = backend._lib.GENERAL_SUBTREE_new()
+            gs.base = _encode_general_name(backend, name)
+            res = backend._lib.sk_GENERAL_SUBTREE_push(general_subtrees, gs)
+            assert res >= 1
+
+        return general_subtrees
+
+
+_EXTENSION_ENCODE_HANDLERS = {
+    ExtensionOID.BASIC_CONSTRAINTS: _encode_basic_constraints,
+    ExtensionOID.SUBJECT_KEY_IDENTIFIER: _encode_subject_key_identifier,
+    ExtensionOID.KEY_USAGE: _encode_key_usage,
+    ExtensionOID.SUBJECT_ALTERNATIVE_NAME: _encode_alt_name,
+    ExtensionOID.ISSUER_ALTERNATIVE_NAME: _encode_alt_name,
+    ExtensionOID.EXTENDED_KEY_USAGE: _encode_extended_key_usage,
+    ExtensionOID.AUTHORITY_KEY_IDENTIFIER: _encode_authority_key_identifier,
+    ExtensionOID.CERTIFICATE_POLICIES: _encode_certificate_policies,
+    ExtensionOID.AUTHORITY_INFORMATION_ACCESS: (
+        _encode_authority_information_access
+    ),
+    ExtensionOID.CRL_DISTRIBUTION_POINTS: _encode_cdps_freshest_crl,
+    ExtensionOID.FRESHEST_CRL: _encode_cdps_freshest_crl,
+    ExtensionOID.INHIBIT_ANY_POLICY: _encode_inhibit_any_policy,
+    ExtensionOID.OCSP_NO_CHECK: _encode_ocsp_nocheck,
+    ExtensionOID.NAME_CONSTRAINTS: _encode_name_constraints,
+    ExtensionOID.POLICY_CONSTRAINTS: _encode_policy_constraints,
+}
+
+_CRL_EXTENSION_ENCODE_HANDLERS = {
+    ExtensionOID.ISSUER_ALTERNATIVE_NAME: _encode_alt_name,
+    ExtensionOID.AUTHORITY_KEY_IDENTIFIER: _encode_authority_key_identifier,
+    ExtensionOID.AUTHORITY_INFORMATION_ACCESS: (
+        _encode_authority_information_access
+    ),
+    ExtensionOID.CRL_NUMBER: _encode_crl_number_delta_crl_indicator,
+    ExtensionOID.DELTA_CRL_INDICATOR: _encode_crl_number_delta_crl_indicator,
+}
+
+_CRL_ENTRY_EXTENSION_ENCODE_HANDLERS = {
+    CRLEntryExtensionOID.CERTIFICATE_ISSUER: _encode_alt_name,
+    CRLEntryExtensionOID.CRL_REASON: _encode_crl_reason,
+    CRLEntryExtensionOID.INVALIDITY_DATE: _encode_invalidity_date,
+}

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/hashes.py

@@ -0,0 +1,61 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+
+from cryptography import utils
+from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
+from cryptography.hazmat.primitives import hashes
+
+
+@utils.register_interface(hashes.HashContext)
+class _HashContext(object):
+    def __init__(self, backend, algorithm, ctx=None):
+        self._algorithm = algorithm
+
+        self._backend = backend
+
+        if ctx is None:
+            ctx = self._backend._lib.Cryptography_EVP_MD_CTX_new()
+            ctx = self._backend._ffi.gc(
+                ctx, self._backend._lib.Cryptography_EVP_MD_CTX_free
+            )
+            name = self._backend._build_openssl_digest_name(algorithm)
+            evp_md = self._backend._lib.EVP_get_digestbyname(name)
+            if evp_md == self._backend._ffi.NULL:
+                raise UnsupportedAlgorithm(
+                    "{0} is not a supported hash on this backend.".format(
+                        name),
+                    _Reasons.UNSUPPORTED_HASH
+                )
+            res = self._backend._lib.EVP_DigestInit_ex(ctx, evp_md,
+                                                       self._backend._ffi.NULL)
+            self._backend.openssl_assert(res != 0)
+
+        self._ctx = ctx
+
+    algorithm = utils.read_only_property("_algorithm")
+
+    def copy(self):
+        copied_ctx = self._backend._lib.Cryptography_EVP_MD_CTX_new()
+        copied_ctx = self._backend._ffi.gc(
+            copied_ctx, self._backend._lib.Cryptography_EVP_MD_CTX_free
+        )
+        res = self._backend._lib.EVP_MD_CTX_copy_ex(copied_ctx, self._ctx)
+        self._backend.openssl_assert(res != 0)
+        return _HashContext(self._backend, self.algorithm, ctx=copied_ctx)
+
+    def update(self, data):
+        res = self._backend._lib.EVP_DigestUpdate(self._ctx, data, len(data))
+        self._backend.openssl_assert(res != 0)
+
+    def finalize(self):
+        buf = self._backend._ffi.new("unsigned char[]",
+                                     self._backend._lib.EVP_MAX_MD_SIZE)
+        outlen = self._backend._ffi.new("unsigned int *")
+        res = self._backend._lib.EVP_DigestFinal_ex(self._ctx, buf, outlen)
+        self._backend.openssl_assert(res != 0)
+        self._backend.openssl_assert(outlen[0] == self.algorithm.digest_size)
+        return self._backend._ffi.buffer(buf)[:outlen[0]]

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/hmac.py

@@ -0,0 +1,73 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+
+from cryptography import utils
+from cryptography.exceptions import (
+    InvalidSignature, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.primitives import constant_time, hashes, mac
+
+
+@utils.register_interface(mac.MACContext)
+@utils.register_interface(hashes.HashContext)
+class _HMACContext(object):
+    def __init__(self, backend, key, algorithm, ctx=None):
+        self._algorithm = algorithm
+        self._backend = backend
+
+        if ctx is None:
+            ctx = self._backend._lib.Cryptography_HMAC_CTX_new()
+            self._backend.openssl_assert(ctx != self._backend._ffi.NULL)
+            ctx = self._backend._ffi.gc(
+                ctx, self._backend._lib.Cryptography_HMAC_CTX_free
+            )
+            name = self._backend._build_openssl_digest_name(algorithm)
+            evp_md = self._backend._lib.EVP_get_digestbyname(name)
+            if evp_md == self._backend._ffi.NULL:
+                raise UnsupportedAlgorithm(
+                    "{0} is not a supported hash on this backend".format(name),
+                    _Reasons.UNSUPPORTED_HASH
+                )
+            res = self._backend._lib.HMAC_Init_ex(
+                ctx, key, len(key), evp_md, self._backend._ffi.NULL
+            )
+            self._backend.openssl_assert(res != 0)
+
+        self._ctx = ctx
+        self._key = key
+
+    algorithm = utils.read_only_property("_algorithm")
+
+    def copy(self):
+        copied_ctx = self._backend._lib.Cryptography_HMAC_CTX_new()
+        self._backend.openssl_assert(copied_ctx != self._backend._ffi.NULL)
+        copied_ctx = self._backend._ffi.gc(
+            copied_ctx, self._backend._lib.Cryptography_HMAC_CTX_free
+        )
+        res = self._backend._lib.HMAC_CTX_copy(copied_ctx, self._ctx)
+        self._backend.openssl_assert(res != 0)
+        return _HMACContext(
+            self._backend, self._key, self.algorithm, ctx=copied_ctx
+        )
+
+    def update(self, data):
+        res = self._backend._lib.HMAC_Update(self._ctx, data, len(data))
+        self._backend.openssl_assert(res != 0)
+
+    def finalize(self):
+        buf = self._backend._ffi.new("unsigned char[]",
+                                     self._backend._lib.EVP_MAX_MD_SIZE)
+        outlen = self._backend._ffi.new("unsigned int *")
+        res = self._backend._lib.HMAC_Final(self._ctx, buf, outlen)
+        self._backend.openssl_assert(res != 0)
+        self._backend.openssl_assert(outlen[0] == self.algorithm.digest_size)
+        return self._backend._ffi.buffer(buf)[:outlen[0]]
+
+    def verify(self, signature):
+        digest = self.finalize()
+        if not constant_time.bytes_eq(digest, signature):
+            raise InvalidSignature("Signature did not match digest.")

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/rsa.py

@@ -0,0 +1,475 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import math
+
+from cryptography import utils
+from cryptography.exceptions import (
+    InvalidSignature, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.openssl.utils import (
+    _calculate_digest_and_algorithm, _check_not_prehashed,
+    _warn_sign_verify_deprecated
+)
+from cryptography.hazmat.primitives import hashes
+from cryptography.hazmat.primitives.asymmetric import (
+    AsymmetricSignatureContext, AsymmetricVerificationContext, rsa
+)
+from cryptography.hazmat.primitives.asymmetric.padding import (
+    AsymmetricPadding, MGF1, OAEP, PKCS1v15, PSS, calculate_max_pss_salt_length
+)
+from cryptography.hazmat.primitives.asymmetric.rsa import (
+    RSAPrivateKeyWithSerialization, RSAPublicKeyWithSerialization
+)
+
+
+def _get_rsa_pss_salt_length(pss, key, hash_algorithm):
+    salt = pss._salt_length
+
+    if salt is MGF1.MAX_LENGTH or salt is PSS.MAX_LENGTH:
+        return calculate_max_pss_salt_length(key, hash_algorithm)
+    else:
+        return salt
+
+
+def _enc_dec_rsa(backend, key, data, padding):
+    if not isinstance(padding, AsymmetricPadding):
+        raise TypeError("Padding must be an instance of AsymmetricPadding.")
+
+    if isinstance(padding, PKCS1v15):
+        padding_enum = backend._lib.RSA_PKCS1_PADDING
+    elif isinstance(padding, OAEP):
+        padding_enum = backend._lib.RSA_PKCS1_OAEP_PADDING
+
+        if not isinstance(padding._mgf, MGF1):
+            raise UnsupportedAlgorithm(
+                "Only MGF1 is supported by this backend.",
+                _Reasons.UNSUPPORTED_MGF
+            )
+
+        if not backend.rsa_padding_supported(padding):
+            raise UnsupportedAlgorithm(
+                "This combination of padding and hash algorithm is not "
+                "supported by this backend.",
+                _Reasons.UNSUPPORTED_PADDING
+            )
+
+    else:
+        raise UnsupportedAlgorithm(
+            "{0} is not supported by this backend.".format(
+                padding.name
+            ),
+            _Reasons.UNSUPPORTED_PADDING
+        )
+
+    return _enc_dec_rsa_pkey_ctx(backend, key, data, padding_enum, padding)
+
+
+def _enc_dec_rsa_pkey_ctx(backend, key, data, padding_enum, padding):
+    if isinstance(key, _RSAPublicKey):
+        init = backend._lib.EVP_PKEY_encrypt_init
+        crypt = backend._lib.EVP_PKEY_encrypt
+    else:
+        init = backend._lib.EVP_PKEY_decrypt_init
+        crypt = backend._lib.EVP_PKEY_decrypt
+
+    pkey_ctx = backend._lib.EVP_PKEY_CTX_new(
+        key._evp_pkey, backend._ffi.NULL
+    )
+    backend.openssl_assert(pkey_ctx != backend._ffi.NULL)
+    pkey_ctx = backend._ffi.gc(pkey_ctx, backend._lib.EVP_PKEY_CTX_free)
+    res = init(pkey_ctx)
+    backend.openssl_assert(res == 1)
+    res = backend._lib.EVP_PKEY_CTX_set_rsa_padding(
+        pkey_ctx, padding_enum)
+    backend.openssl_assert(res > 0)
+    buf_size = backend._lib.EVP_PKEY_size(key._evp_pkey)
+    backend.openssl_assert(buf_size > 0)
+    if (
+        isinstance(padding, OAEP) and
+        backend._lib.Cryptography_HAS_RSA_OAEP_MD
+    ):
+        mgf1_md = backend._lib.EVP_get_digestbyname(
+            padding._mgf._algorithm.name.encode("ascii"))
+        backend.openssl_assert(mgf1_md != backend._ffi.NULL)
+        res = backend._lib.EVP_PKEY_CTX_set_rsa_mgf1_md(pkey_ctx, mgf1_md)
+        backend.openssl_assert(res > 0)
+        oaep_md = backend._lib.EVP_get_digestbyname(
+            padding._algorithm.name.encode("ascii"))
+        backend.openssl_assert(oaep_md != backend._ffi.NULL)
+        res = backend._lib.EVP_PKEY_CTX_set_rsa_oaep_md(pkey_ctx, oaep_md)
+        backend.openssl_assert(res > 0)
+
+    if (
+        isinstance(padding, OAEP) and
+        padding._label is not None and
+        len(padding._label) > 0
+    ):
+        # set0_rsa_oaep_label takes ownership of the char * so we need to
+        # copy it into some new memory
+        labelptr = backend._lib.OPENSSL_malloc(len(padding._label))
+        backend.openssl_assert(labelptr != backend._ffi.NULL)
+        backend._ffi.memmove(labelptr, padding._label, len(padding._label))
+        res = backend._lib.EVP_PKEY_CTX_set0_rsa_oaep_label(
+            pkey_ctx, labelptr, len(padding._label)
+        )
+        backend.openssl_assert(res == 1)
+
+    outlen = backend._ffi.new("size_t *", buf_size)
+    buf = backend._ffi.new("unsigned char[]", buf_size)
+    res = crypt(pkey_ctx, buf, outlen, data, len(data))
+    if res <= 0:
+        _handle_rsa_enc_dec_error(backend, key)
+
+    return backend._ffi.buffer(buf)[:outlen[0]]
+
+
+def _handle_rsa_enc_dec_error(backend, key):
+    errors = backend._consume_errors()
+    backend.openssl_assert(errors)
+    assert errors[0].lib == backend._lib.ERR_LIB_RSA
+    if isinstance(key, _RSAPublicKey):
+        assert (errors[0].reason ==
+                backend._lib.RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE)
+        raise ValueError(
+            "Data too long for key size. Encrypt less data or use a "
+            "larger key size."
+        )
+    else:
+        decoding_errors = [
+            backend._lib.RSA_R_BLOCK_TYPE_IS_NOT_01,
+            backend._lib.RSA_R_BLOCK_TYPE_IS_NOT_02,
+            backend._lib.RSA_R_OAEP_DECODING_ERROR,
+            # Though this error looks similar to the
+            # RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE, this occurs on decrypts,
+            # rather than on encrypts
+            backend._lib.RSA_R_DATA_TOO_LARGE_FOR_MODULUS,
+        ]
+        if backend._lib.Cryptography_HAS_RSA_R_PKCS_DECODING_ERROR:
+            decoding_errors.append(backend._lib.RSA_R_PKCS_DECODING_ERROR)
+
+        assert errors[0].reason in decoding_errors
+        raise ValueError("Decryption failed.")
+
+
+def _rsa_sig_determine_padding(backend, key, padding, algorithm):
+    if not isinstance(padding, AsymmetricPadding):
+        raise TypeError("Expected provider of AsymmetricPadding.")
+
+    pkey_size = backend._lib.EVP_PKEY_size(key._evp_pkey)
+    backend.openssl_assert(pkey_size > 0)
+
+    if isinstance(padding, PKCS1v15):
+        padding_enum = backend._lib.RSA_PKCS1_PADDING
+    elif isinstance(padding, PSS):
+        if not isinstance(padding._mgf, MGF1):
+            raise UnsupportedAlgorithm(
+                "Only MGF1 is supported by this backend.",
+                _Reasons.UNSUPPORTED_MGF
+            )
+
+        # Size of key in bytes - 2 is the maximum
+        # PSS signature length (salt length is checked later)
+        if pkey_size - algorithm.digest_size - 2 < 0:
+            raise ValueError("Digest too large for key size. Use a larger "
+                             "key or different digest.")
+
+        padding_enum = backend._lib.RSA_PKCS1_PSS_PADDING
+    else:
+        raise UnsupportedAlgorithm(
+            "{0} is not supported by this backend.".format(padding.name),
+            _Reasons.UNSUPPORTED_PADDING
+        )
+
+    return padding_enum
+
+
+def _rsa_sig_setup(backend, padding, algorithm, key, data, init_func):
+    padding_enum = _rsa_sig_determine_padding(backend, key, padding, algorithm)
+    evp_md = backend._lib.EVP_get_digestbyname(algorithm.name.encode("ascii"))
+    backend.openssl_assert(evp_md != backend._ffi.NULL)
+    pkey_ctx = backend._lib.EVP_PKEY_CTX_new(key._evp_pkey, backend._ffi.NULL)
+    backend.openssl_assert(pkey_ctx != backend._ffi.NULL)
+    pkey_ctx = backend._ffi.gc(pkey_ctx, backend._lib.EVP_PKEY_CTX_free)
+    res = init_func(pkey_ctx)
+    backend.openssl_assert(res == 1)
+    res = backend._lib.EVP_PKEY_CTX_set_signature_md(pkey_ctx, evp_md)
+    backend.openssl_assert(res > 0)
+    res = backend._lib.EVP_PKEY_CTX_set_rsa_padding(pkey_ctx, padding_enum)
+    backend.openssl_assert(res > 0)
+    if isinstance(padding, PSS):
+        res = backend._lib.EVP_PKEY_CTX_set_rsa_pss_saltlen(
+            pkey_ctx, _get_rsa_pss_salt_length(padding, key, algorithm)
+        )
+        backend.openssl_assert(res > 0)
+
+        mgf1_md = backend._lib.EVP_get_digestbyname(
+            padding._mgf._algorithm.name.encode("ascii")
+        )
+        backend.openssl_assert(mgf1_md != backend._ffi.NULL)
+        res = backend._lib.EVP_PKEY_CTX_set_rsa_mgf1_md(pkey_ctx, mgf1_md)
+        backend.openssl_assert(res > 0)
+
+    return pkey_ctx
+
+
+def _rsa_sig_sign(backend, padding, algorithm, private_key, data):
+    pkey_ctx = _rsa_sig_setup(
+        backend, padding, algorithm, private_key, data,
+        backend._lib.EVP_PKEY_sign_init
+    )
+    buflen = backend._ffi.new("size_t *")
+    res = backend._lib.EVP_PKEY_sign(
+        pkey_ctx,
+        backend._ffi.NULL,
+        buflen,
+        data,
+        len(data)
+    )
+    backend.openssl_assert(res == 1)
+    buf = backend._ffi.new("unsigned char[]", buflen[0])
+    res = backend._lib.EVP_PKEY_sign(
+        pkey_ctx, buf, buflen, data, len(data))
+    if res != 1:
+        errors = backend._consume_errors()
+        assert errors[0].lib == backend._lib.ERR_LIB_RSA
+        reason = None
+        if (errors[0].reason ==
+                backend._lib.RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE):
+            reason = ("Salt length too long for key size. Try using "
+                      "MAX_LENGTH instead.")
+        else:
+            assert (errors[0].reason ==
+                    backend._lib.RSA_R_DIGEST_TOO_BIG_FOR_RSA_KEY)
+            reason = "Digest too large for key size. Use a larger key."
+        assert reason is not None
+        raise ValueError(reason)
+
+    return backend._ffi.buffer(buf)[:]
+
+
+def _rsa_sig_verify(backend, padding, algorithm, public_key, signature, data):
+    pkey_ctx = _rsa_sig_setup(
+        backend, padding, algorithm, public_key, data,
+        backend._lib.EVP_PKEY_verify_init
+    )
+    res = backend._lib.EVP_PKEY_verify(
+        pkey_ctx, signature, len(signature), data, len(data)
+    )
+    # The previous call can return negative numbers in the event of an
+    # error. This is not a signature failure but we need to fail if it
+    # occurs.
+    backend.openssl_assert(res >= 0)
+    if res == 0:
+        backend._consume_errors()
+        raise InvalidSignature
+
+
+@utils.register_interface(AsymmetricSignatureContext)
+class _RSASignatureContext(object):
+    def __init__(self, backend, private_key, padding, algorithm):
+        self._backend = backend
+        self._private_key = private_key
+
+        # We now call _rsa_sig_determine_padding in _rsa_sig_setup. However
+        # we need to make a pointless call to it here so we maintain the
+        # API of erroring on init with this context if the values are invalid.
+        _rsa_sig_determine_padding(backend, private_key, padding, algorithm)
+        self._padding = padding
+        self._algorithm = algorithm
+        self._hash_ctx = hashes.Hash(self._algorithm, self._backend)
+
+    def update(self, data):
+        self._hash_ctx.update(data)
+
+    def finalize(self):
+        return _rsa_sig_sign(
+            self._backend,
+            self._padding,
+            self._algorithm,
+            self._private_key,
+            self._hash_ctx.finalize()
+        )
+
+
+@utils.register_interface(AsymmetricVerificationContext)
+class _RSAVerificationContext(object):
+    def __init__(self, backend, public_key, signature, padding, algorithm):
+        self._backend = backend
+        self._public_key = public_key
+        self._signature = signature
+        self._padding = padding
+        # We now call _rsa_sig_determine_padding in _rsa_sig_setup. However
+        # we need to make a pointless call to it here so we maintain the
+        # API of erroring on init with this context if the values are invalid.
+        _rsa_sig_determine_padding(backend, public_key, padding, algorithm)
+
+        padding = padding
+        self._algorithm = algorithm
+        self._hash_ctx = hashes.Hash(self._algorithm, self._backend)
+
+    def update(self, data):
+        self._hash_ctx.update(data)
+
+    def verify(self):
+        return _rsa_sig_verify(
+            self._backend,
+            self._padding,
+            self._algorithm,
+            self._public_key,
+            self._signature,
+            self._hash_ctx.finalize()
+        )
+
+
+@utils.register_interface(RSAPrivateKeyWithSerialization)
+class _RSAPrivateKey(object):
+    def __init__(self, backend, rsa_cdata, evp_pkey):
+        self._backend = backend
+        self._rsa_cdata = rsa_cdata
+        self._evp_pkey = evp_pkey
+
+        n = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.RSA_get0_key(
+            self._rsa_cdata, n, self._backend._ffi.NULL,
+            self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(n[0] != self._backend._ffi.NULL)
+        self._key_size = self._backend._lib.BN_num_bits(n[0])
+
+    key_size = utils.read_only_property("_key_size")
+
+    def signer(self, padding, algorithm):
+        _warn_sign_verify_deprecated()
+        _check_not_prehashed(algorithm)
+        return _RSASignatureContext(self._backend, self, padding, algorithm)
+
+    def decrypt(self, ciphertext, padding):
+        key_size_bytes = int(math.ceil(self.key_size / 8.0))
+        if key_size_bytes != len(ciphertext):
+            raise ValueError("Ciphertext length must be equal to key size.")
+
+        return _enc_dec_rsa(self._backend, self, ciphertext, padding)
+
+    def public_key(self):
+        ctx = self._backend._lib.RSAPublicKey_dup(self._rsa_cdata)
+        self._backend.openssl_assert(ctx != self._backend._ffi.NULL)
+        ctx = self._backend._ffi.gc(ctx, self._backend._lib.RSA_free)
+        res = self._backend._lib.RSA_blinding_on(ctx, self._backend._ffi.NULL)
+        self._backend.openssl_assert(res == 1)
+        evp_pkey = self._backend._rsa_cdata_to_evp_pkey(ctx)
+        return _RSAPublicKey(self._backend, ctx, evp_pkey)
+
+    def private_numbers(self):
+        n = self._backend._ffi.new("BIGNUM **")
+        e = self._backend._ffi.new("BIGNUM **")
+        d = self._backend._ffi.new("BIGNUM **")
+        p = self._backend._ffi.new("BIGNUM **")
+        q = self._backend._ffi.new("BIGNUM **")
+        dmp1 = self._backend._ffi.new("BIGNUM **")
+        dmq1 = self._backend._ffi.new("BIGNUM **")
+        iqmp = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.RSA_get0_key(self._rsa_cdata, n, e, d)
+        self._backend.openssl_assert(n[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(e[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(d[0] != self._backend._ffi.NULL)
+        self._backend._lib.RSA_get0_factors(self._rsa_cdata, p, q)
+        self._backend.openssl_assert(p[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(q[0] != self._backend._ffi.NULL)
+        self._backend._lib.RSA_get0_crt_params(
+            self._rsa_cdata, dmp1, dmq1, iqmp
+        )
+        self._backend.openssl_assert(dmp1[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(dmq1[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(iqmp[0] != self._backend._ffi.NULL)
+        return rsa.RSAPrivateNumbers(
+            p=self._backend._bn_to_int(p[0]),
+            q=self._backend._bn_to_int(q[0]),
+            d=self._backend._bn_to_int(d[0]),
+            dmp1=self._backend._bn_to_int(dmp1[0]),
+            dmq1=self._backend._bn_to_int(dmq1[0]),
+            iqmp=self._backend._bn_to_int(iqmp[0]),
+            public_numbers=rsa.RSAPublicNumbers(
+                e=self._backend._bn_to_int(e[0]),
+                n=self._backend._bn_to_int(n[0]),
+            )
+        )
+
+    def private_bytes(self, encoding, format, encryption_algorithm):
+        return self._backend._private_key_bytes(
+            encoding,
+            format,
+            encryption_algorithm,
+            self._evp_pkey,
+            self._rsa_cdata
+        )
+
+    def sign(self, data, padding, algorithm):
+        data, algorithm = _calculate_digest_and_algorithm(
+            self._backend, data, algorithm
+        )
+        return _rsa_sig_sign(self._backend, padding, algorithm, self, data)
+
+
+@utils.register_interface(RSAPublicKeyWithSerialization)
+class _RSAPublicKey(object):
+    def __init__(self, backend, rsa_cdata, evp_pkey):
+        self._backend = backend
+        self._rsa_cdata = rsa_cdata
+        self._evp_pkey = evp_pkey
+
+        n = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.RSA_get0_key(
+            self._rsa_cdata, n, self._backend._ffi.NULL,
+            self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(n[0] != self._backend._ffi.NULL)
+        self._key_size = self._backend._lib.BN_num_bits(n[0])
+
+    key_size = utils.read_only_property("_key_size")
+
+    def verifier(self, signature, padding, algorithm):
+        _warn_sign_verify_deprecated()
+        if not isinstance(signature, bytes):
+            raise TypeError("signature must be bytes.")
+
+        _check_not_prehashed(algorithm)
+        return _RSAVerificationContext(
+            self._backend, self, signature, padding, algorithm
+        )
+
+    def encrypt(self, plaintext, padding):
+        return _enc_dec_rsa(self._backend, self, plaintext, padding)
+
+    def public_numbers(self):
+        n = self._backend._ffi.new("BIGNUM **")
+        e = self._backend._ffi.new("BIGNUM **")
+        self._backend._lib.RSA_get0_key(
+            self._rsa_cdata, n, e, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(n[0] != self._backend._ffi.NULL)
+        self._backend.openssl_assert(e[0] != self._backend._ffi.NULL)
+        return rsa.RSAPublicNumbers(
+            e=self._backend._bn_to_int(e[0]),
+            n=self._backend._bn_to_int(n[0]),
+        )
+
+    def public_bytes(self, encoding, format):
+        return self._backend._public_key_bytes(
+            encoding,
+            format,
+            self,
+            self._evp_pkey,
+            self._rsa_cdata
+        )
+
+    def verify(self, signature, data, padding, algorithm):
+        data, algorithm = _calculate_digest_and_algorithm(
+            self._backend, data, algorithm
+        )
+        return _rsa_sig_verify(
+            self._backend, padding, algorithm, self, signature, data
+        )

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/utils.py

@@ -0,0 +1,45 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import warnings
+
+from cryptography import utils
+from cryptography.hazmat.primitives import hashes
+from cryptography.hazmat.primitives.asymmetric.utils import Prehashed
+
+
+def _calculate_digest_and_algorithm(backend, data, algorithm):
+    if not isinstance(algorithm, Prehashed):
+        hash_ctx = hashes.Hash(algorithm, backend)
+        hash_ctx.update(data)
+        data = hash_ctx.finalize()
+    else:
+        algorithm = algorithm._algorithm
+
+    if len(data) != algorithm.digest_size:
+        raise ValueError(
+            "The provided data must be the same length as the hash "
+            "algorithm's digest size."
+        )
+
+    return (data, algorithm)
+
+
+def _check_not_prehashed(signature_algorithm):
+    if isinstance(signature_algorithm, Prehashed):
+        raise TypeError(
+            "Prehashed is only supported in the sign and verify methods. "
+            "It cannot be used with signer or verifier."
+        )
+
+
+def _warn_sign_verify_deprecated():
+    warnings.warn(
+        "signer and verifier have been deprecated. Please use sign "
+        "and verify instead.",
+        utils.PersistentlyDeprecated,
+        stacklevel=3
+    )

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/x25519.py

@@ -0,0 +1,79 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.hazmat.primitives.asymmetric.x25519 import (
+    X25519PrivateKey, X25519PublicKey
+)
+
+
+@utils.register_interface(X25519PublicKey)
+class _X25519PublicKey(object):
+    def __init__(self, backend, evp_pkey):
+        self._backend = backend
+        self._evp_pkey = evp_pkey
+
+    def public_bytes(self):
+        ucharpp = self._backend._ffi.new("unsigned char **")
+        res = self._backend._lib.EVP_PKEY_get1_tls_encodedpoint(
+            self._evp_pkey, ucharpp
+        )
+        self._backend.openssl_assert(res == 32)
+        self._backend.openssl_assert(ucharpp[0] != self._backend._ffi.NULL)
+        data = self._backend._ffi.gc(
+            ucharpp[0], self._backend._lib.OPENSSL_free
+        )
+        return self._backend._ffi.buffer(data, res)[:]
+
+
+@utils.register_interface(X25519PrivateKey)
+class _X25519PrivateKey(object):
+    def __init__(self, backend, evp_pkey):
+        self._backend = backend
+        self._evp_pkey = evp_pkey
+
+    def public_key(self):
+        bio = self._backend._create_mem_bio_gc()
+        res = self._backend._lib.i2d_PUBKEY_bio(bio, self._evp_pkey)
+        self._backend.openssl_assert(res == 1)
+        evp_pkey = self._backend._lib.d2i_PUBKEY_bio(
+            bio, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(evp_pkey != self._backend._ffi.NULL)
+        evp_pkey = self._backend._ffi.gc(
+            evp_pkey, self._backend._lib.EVP_PKEY_free
+        )
+        return _X25519PublicKey(self._backend, evp_pkey)
+
+    def exchange(self, peer_public_key):
+        if not isinstance(peer_public_key, X25519PublicKey):
+            raise TypeError("peer_public_key must be X25519PublicKey.")
+
+        ctx = self._backend._lib.EVP_PKEY_CTX_new(
+            self._evp_pkey, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(ctx != self._backend._ffi.NULL)
+        ctx = self._backend._ffi.gc(ctx, self._backend._lib.EVP_PKEY_CTX_free)
+        res = self._backend._lib.EVP_PKEY_derive_init(ctx)
+        self._backend.openssl_assert(res == 1)
+        res = self._backend._lib.EVP_PKEY_derive_set_peer(
+            ctx, peer_public_key._evp_pkey
+        )
+        self._backend.openssl_assert(res == 1)
+        keylen = self._backend._ffi.new("size_t *")
+        res = self._backend._lib.EVP_PKEY_derive(
+            ctx, self._backend._ffi.NULL, keylen
+        )
+        self._backend.openssl_assert(res == 1)
+        self._backend.openssl_assert(keylen[0] > 0)
+        buf = self._backend._ffi.new("unsigned char[]", keylen[0])
+        res = self._backend._lib.EVP_PKEY_derive(ctx, buf, keylen)
+        if res != 1:
+            raise ValueError(
+                "Null shared key derived from public/private pair."
+            )
+
+        return self._backend._ffi.buffer(buf, keylen[0])[:]

server/www/packages/packages-common/cryptography/hazmat/backends/openssl/x509.py

@@ -0,0 +1,518 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import datetime
+import operator
+import warnings
+
+from cryptography import utils, x509
+from cryptography.exceptions import UnsupportedAlgorithm
+from cryptography.hazmat.backends.openssl.decode_asn1 import (
+    _CERTIFICATE_EXTENSION_PARSER, _CERTIFICATE_EXTENSION_PARSER_NO_SCT,
+    _CRL_EXTENSION_PARSER, _CSR_EXTENSION_PARSER,
+    _REVOKED_CERTIFICATE_EXTENSION_PARSER, _asn1_integer_to_int,
+    _asn1_string_to_bytes, _decode_x509_name, _obj2txt, _parse_asn1_time
+)
+from cryptography.hazmat.backends.openssl.encode_asn1 import (
+    _encode_asn1_int_gc
+)
+from cryptography.hazmat.primitives import hashes, serialization
+from cryptography.hazmat.primitives.asymmetric import dsa, ec, rsa
+
+
+@utils.register_interface(x509.Certificate)
+class _Certificate(object):
+    def __init__(self, backend, x509):
+        self._backend = backend
+        self._x509 = x509
+
+    def __repr__(self):
+        return "<Certificate(subject={0}, ...)>".format(self.subject)
+
+    def __eq__(self, other):
+        if not isinstance(other, x509.Certificate):
+            return NotImplemented
+
+        res = self._backend._lib.X509_cmp(self._x509, other._x509)
+        return res == 0
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self.public_bytes(serialization.Encoding.DER))
+
+    def fingerprint(self, algorithm):
+        h = hashes.Hash(algorithm, self._backend)
+        h.update(self.public_bytes(serialization.Encoding.DER))
+        return h.finalize()
+
+    @property
+    def version(self):
+        version = self._backend._lib.X509_get_version(self._x509)
+        if version == 0:
+            return x509.Version.v1
+        elif version == 2:
+            return x509.Version.v3
+        else:
+            raise x509.InvalidVersion(
+                "{0} is not a valid X509 version".format(version), version
+            )
+
+    @property
+    def serial(self):
+        warnings.warn(
+            "Certificate serial is deprecated, use serial_number instead.",
+            utils.PersistentlyDeprecated,
+            stacklevel=2
+        )
+        return self.serial_number
+
+    @property
+    def serial_number(self):
+        asn1_int = self._backend._lib.X509_get_serialNumber(self._x509)
+        self._backend.openssl_assert(asn1_int != self._backend._ffi.NULL)
+        return _asn1_integer_to_int(self._backend, asn1_int)
+
+    def public_key(self):
+        pkey = self._backend._lib.X509_get_pubkey(self._x509)
+        if pkey == self._backend._ffi.NULL:
+            # Remove errors from the stack.
+            self._backend._consume_errors()
+            raise ValueError("Certificate public key is of an unknown type")
+
+        pkey = self._backend._ffi.gc(pkey, self._backend._lib.EVP_PKEY_free)
+
+        return self._backend._evp_pkey_to_public_key(pkey)
+
+    @property
+    def not_valid_before(self):
+        asn1_time = self._backend._lib.X509_get_notBefore(self._x509)
+        return _parse_asn1_time(self._backend, asn1_time)
+
+    @property
+    def not_valid_after(self):
+        asn1_time = self._backend._lib.X509_get_notAfter(self._x509)
+        return _parse_asn1_time(self._backend, asn1_time)
+
+    @property
+    def issuer(self):
+        issuer = self._backend._lib.X509_get_issuer_name(self._x509)
+        self._backend.openssl_assert(issuer != self._backend._ffi.NULL)
+        return _decode_x509_name(self._backend, issuer)
+
+    @property
+    def subject(self):
+        subject = self._backend._lib.X509_get_subject_name(self._x509)
+        self._backend.openssl_assert(subject != self._backend._ffi.NULL)
+        return _decode_x509_name(self._backend, subject)
+
+    @property
+    def signature_hash_algorithm(self):
+        oid = self.signature_algorithm_oid
+        try:
+            return x509._SIG_OIDS_TO_HASH[oid]
+        except KeyError:
+            raise UnsupportedAlgorithm(
+                "Signature algorithm OID:{0} not recognized".format(oid)
+            )
+
+    @property
+    def signature_algorithm_oid(self):
+        alg = self._backend._ffi.new("X509_ALGOR **")
+        self._backend._lib.X509_get0_signature(
+            self._backend._ffi.NULL, alg, self._x509
+        )
+        self._backend.openssl_assert(alg[0] != self._backend._ffi.NULL)
+        oid = _obj2txt(self._backend, alg[0].algorithm)
+        return x509.ObjectIdentifier(oid)
+
+    @utils.cached_property
+    def extensions(self):
+        if self._backend._lib.CRYPTOGRAPHY_OPENSSL_110_OR_GREATER:
+            return _CERTIFICATE_EXTENSION_PARSER.parse(
+                self._backend, self._x509
+            )
+        else:
+            return _CERTIFICATE_EXTENSION_PARSER_NO_SCT.parse(
+                self._backend, self._x509
+            )
+
+    @property
+    def signature(self):
+        sig = self._backend._ffi.new("ASN1_BIT_STRING **")
+        self._backend._lib.X509_get0_signature(
+            sig, self._backend._ffi.NULL, self._x509
+        )
+        self._backend.openssl_assert(sig[0] != self._backend._ffi.NULL)
+        return _asn1_string_to_bytes(self._backend, sig[0])
+
+    @property
+    def tbs_certificate_bytes(self):
+        pp = self._backend._ffi.new("unsigned char **")
+        res = self._backend._lib.i2d_re_X509_tbs(self._x509, pp)
+        self._backend.openssl_assert(res > 0)
+        pp = self._backend._ffi.gc(
+            pp, lambda pointer: self._backend._lib.OPENSSL_free(pointer[0])
+        )
+        return self._backend._ffi.buffer(pp[0], res)[:]
+
+    def public_bytes(self, encoding):
+        bio = self._backend._create_mem_bio_gc()
+        if encoding is serialization.Encoding.PEM:
+            res = self._backend._lib.PEM_write_bio_X509(bio, self._x509)
+        elif encoding is serialization.Encoding.DER:
+            res = self._backend._lib.i2d_X509_bio(bio, self._x509)
+        else:
+            raise TypeError("encoding must be an item from the Encoding enum")
+
+        self._backend.openssl_assert(res == 1)
+        return self._backend._read_mem_bio(bio)
+
+
+@utils.register_interface(x509.RevokedCertificate)
+class _RevokedCertificate(object):
+    def __init__(self, backend, crl, x509_revoked):
+        self._backend = backend
+        # The X509_REVOKED_value is a X509_REVOKED * that has
+        # no reference counting. This means when X509_CRL_free is
+        # called then the CRL and all X509_REVOKED * are freed. Since
+        # you can retain a reference to a single revoked certificate
+        # and let the CRL fall out of scope we need to retain a
+        # private reference to the CRL inside the RevokedCertificate
+        # object to prevent the gc from being called inappropriately.
+        self._crl = crl
+        self._x509_revoked = x509_revoked
+
+    @property
+    def serial_number(self):
+        asn1_int = self._backend._lib.X509_REVOKED_get0_serialNumber(
+            self._x509_revoked
+        )
+        self._backend.openssl_assert(asn1_int != self._backend._ffi.NULL)
+        return _asn1_integer_to_int(self._backend, asn1_int)
+
+    @property
+    def revocation_date(self):
+        return _parse_asn1_time(
+            self._backend,
+            self._backend._lib.X509_REVOKED_get0_revocationDate(
+                self._x509_revoked
+            )
+        )
+
+    @utils.cached_property
+    def extensions(self):
+        return _REVOKED_CERTIFICATE_EXTENSION_PARSER.parse(
+            self._backend, self._x509_revoked
+        )
+
+
+@utils.register_interface(x509.CertificateRevocationList)
+class _CertificateRevocationList(object):
+    def __init__(self, backend, x509_crl):
+        self._backend = backend
+        self._x509_crl = x509_crl
+
+    def __eq__(self, other):
+        if not isinstance(other, x509.CertificateRevocationList):
+            return NotImplemented
+
+        res = self._backend._lib.X509_CRL_cmp(self._x509_crl, other._x509_crl)
+        return res == 0
+
+    def __ne__(self, other):
+        return not self == other
+
+    def fingerprint(self, algorithm):
+        h = hashes.Hash(algorithm, self._backend)
+        bio = self._backend._create_mem_bio_gc()
+        res = self._backend._lib.i2d_X509_CRL_bio(
+            bio, self._x509_crl
+        )
+        self._backend.openssl_assert(res == 1)
+        der = self._backend._read_mem_bio(bio)
+        h.update(der)
+        return h.finalize()
+
+    def get_revoked_certificate_by_serial_number(self, serial_number):
+        revoked = self._backend._ffi.new("X509_REVOKED **")
+        asn1_int = _encode_asn1_int_gc(self._backend, serial_number)
+        res = self._backend._lib.X509_CRL_get0_by_serial(
+            self._x509_crl, revoked, asn1_int
+        )
+        if res == 0:
+            return None
+        else:
+            self._backend.openssl_assert(
+                revoked[0] != self._backend._ffi.NULL
+            )
+            return _RevokedCertificate(
+                self._backend, self._x509_crl, revoked[0]
+            )
+
+    @property
+    def signature_hash_algorithm(self):
+        oid = self.signature_algorithm_oid
+        try:
+            return x509._SIG_OIDS_TO_HASH[oid]
+        except KeyError:
+            raise UnsupportedAlgorithm(
+                "Signature algorithm OID:{0} not recognized".format(oid)
+            )
+
+    @property
+    def signature_algorithm_oid(self):
+        alg = self._backend._ffi.new("X509_ALGOR **")
+        self._backend._lib.X509_CRL_get0_signature(
+            self._x509_crl, self._backend._ffi.NULL, alg
+        )
+        self._backend.openssl_assert(alg[0] != self._backend._ffi.NULL)
+        oid = _obj2txt(self._backend, alg[0].algorithm)
+        return x509.ObjectIdentifier(oid)
+
+    @property
+    def issuer(self):
+        issuer = self._backend._lib.X509_CRL_get_issuer(self._x509_crl)
+        self._backend.openssl_assert(issuer != self._backend._ffi.NULL)
+        return _decode_x509_name(self._backend, issuer)
+
+    @property
+    def next_update(self):
+        nu = self._backend._lib.X509_CRL_get_nextUpdate(self._x509_crl)
+        self._backend.openssl_assert(nu != self._backend._ffi.NULL)
+        return _parse_asn1_time(self._backend, nu)
+
+    @property
+    def last_update(self):
+        lu = self._backend._lib.X509_CRL_get_lastUpdate(self._x509_crl)
+        self._backend.openssl_assert(lu != self._backend._ffi.NULL)
+        return _parse_asn1_time(self._backend, lu)
+
+    @property
+    def signature(self):
+        sig = self._backend._ffi.new("ASN1_BIT_STRING **")
+        self._backend._lib.X509_CRL_get0_signature(
+            self._x509_crl, sig, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(sig[0] != self._backend._ffi.NULL)
+        return _asn1_string_to_bytes(self._backend, sig[0])
+
+    @property
+    def tbs_certlist_bytes(self):
+        pp = self._backend._ffi.new("unsigned char **")
+        res = self._backend._lib.i2d_re_X509_CRL_tbs(self._x509_crl, pp)
+        self._backend.openssl_assert(res > 0)
+        pp = self._backend._ffi.gc(
+            pp, lambda pointer: self._backend._lib.OPENSSL_free(pointer[0])
+        )
+        return self._backend._ffi.buffer(pp[0], res)[:]
+
+    def public_bytes(self, encoding):
+        bio = self._backend._create_mem_bio_gc()
+        if encoding is serialization.Encoding.PEM:
+            res = self._backend._lib.PEM_write_bio_X509_CRL(
+                bio, self._x509_crl
+            )
+        elif encoding is serialization.Encoding.DER:
+            res = self._backend._lib.i2d_X509_CRL_bio(bio, self._x509_crl)
+        else:
+            raise TypeError("encoding must be an item from the Encoding enum")
+
+        self._backend.openssl_assert(res == 1)
+        return self._backend._read_mem_bio(bio)
+
+    def _revoked_cert(self, idx):
+        revoked = self._backend._lib.X509_CRL_get_REVOKED(self._x509_crl)
+        r = self._backend._lib.sk_X509_REVOKED_value(revoked, idx)
+        self._backend.openssl_assert(r != self._backend._ffi.NULL)
+        return _RevokedCertificate(self._backend, self, r)
+
+    def __iter__(self):
+        for i in range(len(self)):
+            yield self._revoked_cert(i)
+
+    def __getitem__(self, idx):
+        if isinstance(idx, slice):
+            start, stop, step = idx.indices(len(self))
+            return [self._revoked_cert(i) for i in range(start, stop, step)]
+        else:
+            idx = operator.index(idx)
+            if idx < 0:
+                idx += len(self)
+            if not 0 <= idx < len(self):
+                raise IndexError
+            return self._revoked_cert(idx)
+
+    def __len__(self):
+        revoked = self._backend._lib.X509_CRL_get_REVOKED(self._x509_crl)
+        if revoked == self._backend._ffi.NULL:
+            return 0
+        else:
+            return self._backend._lib.sk_X509_REVOKED_num(revoked)
+
+    @utils.cached_property
+    def extensions(self):
+        return _CRL_EXTENSION_PARSER.parse(self._backend, self._x509_crl)
+
+    def is_signature_valid(self, public_key):
+        if not isinstance(public_key, (dsa.DSAPublicKey, rsa.RSAPublicKey,
+                                       ec.EllipticCurvePublicKey)):
+            raise TypeError('Expecting one of DSAPublicKey, RSAPublicKey,'
+                            ' or EllipticCurvePublicKey.')
+        res = self._backend._lib.X509_CRL_verify(
+            self._x509_crl, public_key._evp_pkey
+        )
+
+        if res != 1:
+            self._backend._consume_errors()
+            return False
+
+        return True
+
+
+@utils.register_interface(x509.CertificateSigningRequest)
+class _CertificateSigningRequest(object):
+    def __init__(self, backend, x509_req):
+        self._backend = backend
+        self._x509_req = x509_req
+
+    def __eq__(self, other):
+        if not isinstance(other, _CertificateSigningRequest):
+            return NotImplemented
+
+        self_bytes = self.public_bytes(serialization.Encoding.DER)
+        other_bytes = other.public_bytes(serialization.Encoding.DER)
+        return self_bytes == other_bytes
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self.public_bytes(serialization.Encoding.DER))
+
+    def public_key(self):
+        pkey = self._backend._lib.X509_REQ_get_pubkey(self._x509_req)
+        self._backend.openssl_assert(pkey != self._backend._ffi.NULL)
+        pkey = self._backend._ffi.gc(pkey, self._backend._lib.EVP_PKEY_free)
+        return self._backend._evp_pkey_to_public_key(pkey)
+
+    @property
+    def subject(self):
+        subject = self._backend._lib.X509_REQ_get_subject_name(self._x509_req)
+        self._backend.openssl_assert(subject != self._backend._ffi.NULL)
+        return _decode_x509_name(self._backend, subject)
+
+    @property
+    def signature_hash_algorithm(self):
+        oid = self.signature_algorithm_oid
+        try:
+            return x509._SIG_OIDS_TO_HASH[oid]
+        except KeyError:
+            raise UnsupportedAlgorithm(
+                "Signature algorithm OID:{0} not recognized".format(oid)
+            )
+
+    @property
+    def signature_algorithm_oid(self):
+        alg = self._backend._ffi.new("X509_ALGOR **")
+        self._backend._lib.X509_REQ_get0_signature(
+            self._x509_req, self._backend._ffi.NULL, alg
+        )
+        self._backend.openssl_assert(alg[0] != self._backend._ffi.NULL)
+        oid = _obj2txt(self._backend, alg[0].algorithm)
+        return x509.ObjectIdentifier(oid)
+
+    @utils.cached_property
+    def extensions(self):
+        x509_exts = self._backend._lib.X509_REQ_get_extensions(self._x509_req)
+        return _CSR_EXTENSION_PARSER.parse(self._backend, x509_exts)
+
+    def public_bytes(self, encoding):
+        bio = self._backend._create_mem_bio_gc()
+        if encoding is serialization.Encoding.PEM:
+            res = self._backend._lib.PEM_write_bio_X509_REQ(
+                bio, self._x509_req
+            )
+        elif encoding is serialization.Encoding.DER:
+            res = self._backend._lib.i2d_X509_REQ_bio(bio, self._x509_req)
+        else:
+            raise TypeError("encoding must be an item from the Encoding enum")
+
+        self._backend.openssl_assert(res == 1)
+        return self._backend._read_mem_bio(bio)
+
+    @property
+    def tbs_certrequest_bytes(self):
+        pp = self._backend._ffi.new("unsigned char **")
+        res = self._backend._lib.i2d_re_X509_REQ_tbs(self._x509_req, pp)
+        self._backend.openssl_assert(res > 0)
+        pp = self._backend._ffi.gc(
+            pp, lambda pointer: self._backend._lib.OPENSSL_free(pointer[0])
+        )
+        return self._backend._ffi.buffer(pp[0], res)[:]
+
+    @property
+    def signature(self):
+        sig = self._backend._ffi.new("ASN1_BIT_STRING **")
+        self._backend._lib.X509_REQ_get0_signature(
+            self._x509_req, sig, self._backend._ffi.NULL
+        )
+        self._backend.openssl_assert(sig[0] != self._backend._ffi.NULL)
+        return _asn1_string_to_bytes(self._backend, sig[0])
+
+    @property
+    def is_signature_valid(self):
+        pkey = self._backend._lib.X509_REQ_get_pubkey(self._x509_req)
+        self._backend.openssl_assert(pkey != self._backend._ffi.NULL)
+        pkey = self._backend._ffi.gc(pkey, self._backend._lib.EVP_PKEY_free)
+        res = self._backend._lib.X509_REQ_verify(self._x509_req, pkey)
+
+        if res != 1:
+            self._backend._consume_errors()
+            return False
+
+        return True
+
+
+@utils.register_interface(
+    x509.certificate_transparency.SignedCertificateTimestamp
+)
+class _SignedCertificateTimestamp(object):
+    def __init__(self, backend, sct_list, sct):
+        self._backend = backend
+        # Keep the SCT_LIST that this SCT came from alive.
+        self._sct_list = sct_list
+        self._sct = sct
+
+    @property
+    def version(self):
+        version = self._backend._lib.SCT_get_version(self._sct)
+        assert version == self._backend._lib.SCT_VERSION_V1
+        return x509.certificate_transparency.Version.v1
+
+    @property
+    def log_id(self):
+        out = self._backend._ffi.new("unsigned char **")
+        log_id_length = self._backend._lib.SCT_get0_log_id(self._sct, out)
+        assert log_id_length >= 0
+        return self._backend._ffi.buffer(out[0], log_id_length)[:]
+
+    @property
+    def timestamp(self):
+        timestamp = self._backend._lib.SCT_get_timestamp(self._sct)
+        milliseconds = timestamp % 1000
+        return datetime.datetime.utcfromtimestamp(
+            timestamp // 1000
+        ).replace(microsecond=milliseconds * 1000)
+
+    @property
+    def entry_type(self):
+        entry_type = self._backend._lib.SCT_get_log_entry_type(self._sct)
+        # We currently only support loading SCTs from the X.509 extension, so
+        # we only have precerts.
+        assert entry_type == self._backend._lib.CT_LOG_ENTRY_TYPE_PRECERT
+        return x509.certificate_transparency.LogEntryType.PRE_CERTIFICATE

server/www/packages/packages-common/cryptography/hazmat/bindings/__init__.py

@@ -0,0 +1,5 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function

server/www/packages/packages-common/cryptography/hazmat/bindings/openssl/__init__.py

@@ -0,0 +1,5 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function

server/www/packages/packages-common/cryptography/hazmat/bindings/openssl/_conditional.py

@@ -0,0 +1,302 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+
+def cryptography_has_ec2m():
+    return [
+        "EC_POINT_set_affine_coordinates_GF2m",
+        "EC_POINT_get_affine_coordinates_GF2m",
+        "EC_POINT_set_compressed_coordinates_GF2m",
+    ]
+
+
+def cryptography_has_ec_1_0_2():
+    return [
+        "EC_curve_nid2nist",
+    ]
+
+
+def cryptography_has_set_ecdh_auto():
+    return [
+        "SSL_CTX_set_ecdh_auto",
+    ]
+
+
+def cryptography_has_rsa_r_pkcs_decoding_error():
+    return [
+        "RSA_R_PKCS_DECODING_ERROR"
+    ]
+
+
+def cryptography_has_rsa_oaep_md():
+    return [
+        "EVP_PKEY_CTX_set_rsa_oaep_md",
+    ]
+
+
+def cryptography_has_rsa_oaep_label():
+    return [
+        "EVP_PKEY_CTX_set0_rsa_oaep_label",
+    ]
+
+
+def cryptography_has_ssl3_method():
+    return [
+        "SSLv3_method",
+        "SSLv3_client_method",
+        "SSLv3_server_method",
+    ]
+
+
+def cryptography_has_alpn():
+    return [
+        "SSL_CTX_set_alpn_protos",
+        "SSL_set_alpn_protos",
+        "SSL_CTX_set_alpn_select_cb",
+        "SSL_get0_alpn_selected",
+    ]
+
+
+def cryptography_has_compression():
+    return [
+        "SSL_get_current_compression",
+        "SSL_get_current_expansion",
+        "SSL_COMP_get_name",
+    ]
+
+
+def cryptography_has_get_server_tmp_key():
+    return [
+        "SSL_get_server_tmp_key",
+    ]
+
+
+def cryptography_has_102_verification_error_codes():
+    return [
+        'X509_V_ERR_SUITE_B_INVALID_VERSION',
+        'X509_V_ERR_SUITE_B_INVALID_ALGORITHM',
+        'X509_V_ERR_SUITE_B_INVALID_CURVE',
+        'X509_V_ERR_SUITE_B_INVALID_SIGNATURE_ALGORITHM',
+        'X509_V_ERR_SUITE_B_LOS_NOT_ALLOWED',
+        'X509_V_ERR_SUITE_B_CANNOT_SIGN_P_384_WITH_P_256',
+        'X509_V_ERR_HOSTNAME_MISMATCH',
+        'X509_V_ERR_EMAIL_MISMATCH',
+        'X509_V_ERR_IP_ADDRESS_MISMATCH'
+    ]
+
+
+def cryptography_has_102_verification_params():
+    return [
+        "X509_V_FLAG_SUITEB_128_LOS_ONLY",
+        "X509_V_FLAG_SUITEB_192_LOS",
+        "X509_V_FLAG_SUITEB_128_LOS",
+        "X509_VERIFY_PARAM_set1_host",
+        "X509_VERIFY_PARAM_set1_email",
+        "X509_VERIFY_PARAM_set1_ip",
+        "X509_VERIFY_PARAM_set1_ip_asc",
+        "X509_VERIFY_PARAM_set_hostflags",
+    ]
+
+
+def cryptography_has_x509_v_flag_trusted_first():
+    return [
+        "X509_V_FLAG_TRUSTED_FIRST",
+    ]
+
+
+def cryptography_has_x509_v_flag_partial_chain():
+    return [
+        "X509_V_FLAG_PARTIAL_CHAIN",
+    ]
+
+
+def cryptography_has_set_cert_cb():
+    return [
+        "SSL_CTX_set_cert_cb",
+        "SSL_set_cert_cb",
+    ]
+
+
+def cryptography_has_ssl_st():
+    return [
+        "SSL_ST_BEFORE",
+        "SSL_ST_OK",
+        "SSL_ST_INIT",
+        "SSL_ST_RENEGOTIATE",
+    ]
+
+
+def cryptography_has_tls_st():
+    return [
+        "TLS_ST_BEFORE",
+        "TLS_ST_OK",
+    ]
+
+
+def cryptography_has_locking_callbacks():
+    return [
+        "CRYPTO_LOCK",
+        "CRYPTO_UNLOCK",
+        "CRYPTO_READ",
+        "CRYPTO_LOCK_SSL",
+        "CRYPTO_lock",
+    ]
+
+
+def cryptography_has_scrypt():
+    return [
+        "EVP_PBE_scrypt",
+    ]
+
+
+def cryptography_has_generic_dtls_method():
+    return [
+        "DTLS_method",
+        "DTLS_server_method",
+        "DTLS_client_method",
+        "SSL_OP_NO_DTLSv1",
+        "SSL_OP_NO_DTLSv1_2",
+        "DTLS_set_link_mtu",
+        "DTLS_get_link_min_mtu",
+    ]
+
+
+def cryptography_has_evp_pkey_dhx():
+    return [
+        "EVP_PKEY_DHX",
+    ]
+
+
+def cryptography_has_mem_functions():
+    return [
+        "Cryptography_CRYPTO_set_mem_functions",
+    ]
+
+
+def cryptography_has_sct():
+    return [
+        "SCT_get_version",
+        "SCT_get_log_entry_type",
+        "SCT_get0_log_id",
+        "SCT_get_timestamp",
+        "SCT_set_source",
+        "sk_SCT_num",
+        "sk_SCT_value",
+        "SCT_LIST_free",
+    ]
+
+
+def cryptography_has_x509_store_ctx_get_issuer():
+    return [
+        "X509_STORE_get_get_issuer",
+        "X509_STORE_set_get_issuer",
+    ]
+
+
+def cryptography_has_x25519():
+    return [
+        "EVP_PKEY_X25519",
+        "NID_X25519",
+    ]
+
+
+def cryptography_has_evp_pkey_get_set_tls_encodedpoint():
+    return [
+        "EVP_PKEY_get1_tls_encodedpoint",
+        "EVP_PKEY_set1_tls_encodedpoint",
+    ]
+
+
+def cryptography_has_fips():
+    return [
+        "FIPS_set_mode",
+        "FIPS_mode",
+    ]
+
+
+def cryptography_has_ssl_sigalgs():
+    return [
+        "SSL_CTX_set1_sigalgs_list",
+        "SSL_get_sigalgs",
+    ]
+
+
+def cryptography_has_psk():
+    return [
+        "SSL_CTX_use_psk_identity_hint",
+        "SSL_CTX_set_psk_server_callback",
+        "SSL_CTX_set_psk_client_callback",
+    ]
+
+
+def cryptography_has_custom_ext():
+    return [
+        "SSL_CTX_add_client_custom_ext",
+        "SSL_CTX_add_server_custom_ext",
+        "SSL_extension_supported",
+    ]
+
+
+def cryptography_has_openssl_cleanup():
+    return [
+        "OPENSSL_cleanup",
+    ]
+
+
+# This is a mapping of
+# {condition: function-returning-names-dependent-on-that-condition} so we can
+# loop over them and delete unsupported names at runtime. It will be removed
+# when cffi supports #if in cdef. We use functions instead of just a dict of
+# lists so we can use coverage to measure which are used.
+CONDITIONAL_NAMES = {
+    "Cryptography_HAS_EC2M": cryptography_has_ec2m,
+    "Cryptography_HAS_EC_1_0_2": cryptography_has_ec_1_0_2,
+    "Cryptography_HAS_SET_ECDH_AUTO": cryptography_has_set_ecdh_auto,
+    "Cryptography_HAS_RSA_R_PKCS_DECODING_ERROR": (
+        cryptography_has_rsa_r_pkcs_decoding_error
+    ),
+    "Cryptography_HAS_RSA_OAEP_MD": cryptography_has_rsa_oaep_md,
+    "Cryptography_HAS_RSA_OAEP_LABEL": cryptography_has_rsa_oaep_label,
+    "Cryptography_HAS_SSL3_METHOD": cryptography_has_ssl3_method,
+    "Cryptography_HAS_ALPN": cryptography_has_alpn,
+    "Cryptography_HAS_COMPRESSION": cryptography_has_compression,
+    "Cryptography_HAS_GET_SERVER_TMP_KEY": cryptography_has_get_server_tmp_key,
+    "Cryptography_HAS_102_VERIFICATION_ERROR_CODES": (
+        cryptography_has_102_verification_error_codes
+    ),
+    "Cryptography_HAS_102_VERIFICATION_PARAMS": (
+        cryptography_has_102_verification_params
+    ),
+    "Cryptography_HAS_X509_V_FLAG_TRUSTED_FIRST": (
+        cryptography_has_x509_v_flag_trusted_first
+    ),
+    "Cryptography_HAS_X509_V_FLAG_PARTIAL_CHAIN": (
+        cryptography_has_x509_v_flag_partial_chain
+    ),
+    "Cryptography_HAS_SET_CERT_CB": cryptography_has_set_cert_cb,
+    "Cryptography_HAS_SSL_ST": cryptography_has_ssl_st,
+    "Cryptography_HAS_TLS_ST": cryptography_has_tls_st,
+    "Cryptography_HAS_LOCKING_CALLBACKS": cryptography_has_locking_callbacks,
+    "Cryptography_HAS_SCRYPT": cryptography_has_scrypt,
+    "Cryptography_HAS_GENERIC_DTLS_METHOD": (
+        cryptography_has_generic_dtls_method
+    ),
+    "Cryptography_HAS_EVP_PKEY_DHX": cryptography_has_evp_pkey_dhx,
+    "Cryptography_HAS_MEM_FUNCTIONS": cryptography_has_mem_functions,
+    "Cryptography_HAS_SCT": cryptography_has_sct,
+    "Cryptography_HAS_X509_STORE_CTX_GET_ISSUER": (
+        cryptography_has_x509_store_ctx_get_issuer
+    ),
+    "Cryptography_HAS_X25519": cryptography_has_x25519,
+    "Cryptography_HAS_EVP_PKEY_get_set_tls_encodedpoint": (
+        cryptography_has_evp_pkey_get_set_tls_encodedpoint
+    ),
+    "Cryptography_HAS_FIPS": cryptography_has_fips,
+    "Cryptography_HAS_SIGALGS": cryptography_has_ssl_sigalgs,
+    "Cryptography_HAS_PSK": cryptography_has_psk,
+    "Cryptography_HAS_CUSTOM_EXT": cryptography_has_custom_ext,
+    "Cryptography_HAS_OPENSSL_CLEANUP": cryptography_has_openssl_cleanup,
+}

server/www/packages/packages-common/cryptography/hazmat/bindings/openssl/binding.py

@@ -0,0 +1,157 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import collections
+import threading
+import types
+
+from cryptography import utils
+from cryptography.exceptions import InternalError
+from cryptography.hazmat.bindings._openssl import ffi, lib
+from cryptography.hazmat.bindings.openssl._conditional import CONDITIONAL_NAMES
+
+_OpenSSLErrorWithText = collections.namedtuple(
+    "_OpenSSLErrorWithText", ["code", "lib", "func", "reason", "reason_text"]
+)
+
+
+class _OpenSSLError(object):
+    def __init__(self, code, lib, func, reason):
+        self._code = code
+        self._lib = lib
+        self._func = func
+        self._reason = reason
+
+    def _lib_reason_match(self, lib, reason):
+        return lib == self.lib and reason == self.reason
+
+    code = utils.read_only_property("_code")
+    lib = utils.read_only_property("_lib")
+    func = utils.read_only_property("_func")
+    reason = utils.read_only_property("_reason")
+
+
+def _consume_errors(lib):
+    errors = []
+    while True:
+        code = lib.ERR_get_error()
+        if code == 0:
+            break
+
+        err_lib = lib.ERR_GET_LIB(code)
+        err_func = lib.ERR_GET_FUNC(code)
+        err_reason = lib.ERR_GET_REASON(code)
+
+        errors.append(_OpenSSLError(code, err_lib, err_func, err_reason))
+
+    return errors
+
+
+def _openssl_assert(lib, ok):
+    if not ok:
+        errors = _consume_errors(lib)
+        errors_with_text = []
+        for err in errors:
+            buf = ffi.new("char[]", 256)
+            lib.ERR_error_string_n(err.code, buf, len(buf))
+            err_text_reason = ffi.string(buf)
+
+            errors_with_text.append(
+                _OpenSSLErrorWithText(
+                    err.code, err.lib, err.func, err.reason, err_text_reason
+                )
+            )
+
+        raise InternalError(
+            "Unknown OpenSSL error. This error is commonly encountered when "
+            "another library is not cleaning up the OpenSSL error stack. If "
+            "you are using cryptography with another library that uses "
+            "OpenSSL try disabling it before reporting a bug. Otherwise "
+            "please file an issue at https://github.com/pyca/cryptography/"
+            "issues with information on how to reproduce "
+            "this. ({0!r})".format(errors_with_text),
+            errors_with_text
+        )
+
+
+def build_conditional_library(lib, conditional_names):
+    conditional_lib = types.ModuleType("lib")
+    conditional_lib._original_lib = lib
+    excluded_names = set()
+    for condition, names_cb in conditional_names.items():
+        if not getattr(lib, condition):
+            excluded_names.update(names_cb())
+
+    for attr in dir(lib):
+        if attr not in excluded_names:
+            setattr(conditional_lib, attr, getattr(lib, attr))
+
+    return conditional_lib
+
+
+class Binding(object):
+    """
+    OpenSSL API wrapper.
+    """
+    lib = None
+    ffi = ffi
+    _lib_loaded = False
+    _init_lock = threading.Lock()
+    _lock_init_lock = threading.Lock()
+
+    def __init__(self):
+        self._ensure_ffi_initialized()
+
+    @classmethod
+    def _register_osrandom_engine(cls):
+        # Clear any errors extant in the queue before we start. In many
+        # scenarios other things may be interacting with OpenSSL in the same
+        # process space and it has proven untenable to assume that they will
+        # reliably clear the error queue. Once we clear it here we will
+        # error on any subsequent unexpected item in the stack.
+        cls.lib.ERR_clear_error()
+        cls._osrandom_engine_id = cls.lib.Cryptography_osrandom_engine_id
+        cls._osrandom_engine_name = cls.lib.Cryptography_osrandom_engine_name
+        result = cls.lib.Cryptography_add_osrandom_engine()
+        _openssl_assert(cls.lib, result in (1, 2))
+
+    @classmethod
+    def _ensure_ffi_initialized(cls):
+        with cls._init_lock:
+            if not cls._lib_loaded:
+                cls.lib = build_conditional_library(lib, CONDITIONAL_NAMES)
+                cls._lib_loaded = True
+                # initialize the SSL library
+                cls.lib.SSL_library_init()
+                # adds all ciphers/digests for EVP
+                cls.lib.OpenSSL_add_all_algorithms()
+                # loads error strings for libcrypto and libssl functions
+                cls.lib.SSL_load_error_strings()
+                cls._register_osrandom_engine()
+
+    @classmethod
+    def init_static_locks(cls):
+        with cls._lock_init_lock:
+            cls._ensure_ffi_initialized()
+            # Use Python's implementation if available, importing _ssl triggers
+            # the setup for this.
+            __import__("_ssl")
+
+            if cls.lib.CRYPTO_get_locking_callback() != cls.ffi.NULL:
+                return
+
+            # If nothing else has setup a locking callback already, we set up
+            # our own
+            res = lib.Cryptography_setup_ssl_threads()
+            _openssl_assert(cls.lib, res == 1)
+
+
+# OpenSSL is not thread safe until the locks are initialized. We call this
+# method in module scope so that it executes with the import lock. On
+# Pythons < 3.4 this import lock is a global lock, which can prevent a race
+# condition registering the OpenSSL locks. On Python 3.4+ the import lock
+# is per module so this approach will not work.
+Binding.init_static_locks()

server/www/packages/packages-common/cryptography/hazmat/primitives/__init__.py

@@ -0,0 +1,5 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function

server/www/packages/packages-common/cryptography/hazmat/primitives/asymmetric/__init__.py

@@ -0,0 +1,40 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+
+@six.add_metaclass(abc.ABCMeta)
+class AsymmetricSignatureContext(object):
+    @abc.abstractmethod
+    def update(self, data):
+        """
+        Processes the provided bytes and returns nothing.
+        """
+
+    @abc.abstractmethod
+    def finalize(self):
+        """
+        Returns the signature as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class AsymmetricVerificationContext(object):
+    @abc.abstractmethod
+    def update(self, data):
+        """
+        Processes the provided bytes and returns nothing.
+        """
+
+    @abc.abstractmethod
+    def verify(self):
+        """
+        Raises an exception if the bytes provided to update do not match the
+        signature or the signature does not match the public key.
+        """

server/www/packages/packages-common/cryptography/hazmat/primitives/asymmetric/dh.py

@@ -0,0 +1,212 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography import utils
+
+
+def generate_parameters(generator, key_size, backend):
+    return backend.generate_dh_parameters(generator, key_size)
+
+
+class DHPrivateNumbers(object):
+    def __init__(self, x, public_numbers):
+        if not isinstance(x, six.integer_types):
+            raise TypeError("x must be an integer.")
+
+        if not isinstance(public_numbers, DHPublicNumbers):
+            raise TypeError("public_numbers must be an instance of "
+                            "DHPublicNumbers.")
+
+        self._x = x
+        self._public_numbers = public_numbers
+
+    def __eq__(self, other):
+        if not isinstance(other, DHPrivateNumbers):
+            return NotImplemented
+
+        return (
+            self._x == other._x and
+            self._public_numbers == other._public_numbers
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def private_key(self, backend):
+        return backend.load_dh_private_numbers(self)
+
+    public_numbers = utils.read_only_property("_public_numbers")
+    x = utils.read_only_property("_x")
+
+
+class DHPublicNumbers(object):
+    def __init__(self, y, parameter_numbers):
+        if not isinstance(y, six.integer_types):
+            raise TypeError("y must be an integer.")
+
+        if not isinstance(parameter_numbers, DHParameterNumbers):
+            raise TypeError(
+                "parameters must be an instance of DHParameterNumbers.")
+
+        self._y = y
+        self._parameter_numbers = parameter_numbers
+
+    def __eq__(self, other):
+        if not isinstance(other, DHPublicNumbers):
+            return NotImplemented
+
+        return (
+            self._y == other._y and
+            self._parameter_numbers == other._parameter_numbers
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def public_key(self, backend):
+        return backend.load_dh_public_numbers(self)
+
+    y = utils.read_only_property("_y")
+    parameter_numbers = utils.read_only_property("_parameter_numbers")
+
+
+class DHParameterNumbers(object):
+    def __init__(self, p, g, q=None):
+        if (
+            not isinstance(p, six.integer_types) or
+            not isinstance(g, six.integer_types)
+        ):
+            raise TypeError("p and g must be integers")
+        if q is not None and not isinstance(q, six.integer_types):
+            raise TypeError("q must be integer or None")
+
+        if g < 2:
+            raise ValueError("DH generator must be 2 or greater")
+
+        self._p = p
+        self._g = g
+        self._q = q
+
+    def __eq__(self, other):
+        if not isinstance(other, DHParameterNumbers):
+            return NotImplemented
+
+        return (
+            self._p == other._p and
+            self._g == other._g and
+            self._q == other._q
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def parameters(self, backend):
+        return backend.load_dh_parameter_numbers(self)
+
+    p = utils.read_only_property("_p")
+    g = utils.read_only_property("_g")
+    q = utils.read_only_property("_q")
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DHParameters(object):
+    @abc.abstractmethod
+    def generate_private_key(self):
+        """
+        Generates and returns a DHPrivateKey.
+        """
+
+    @abc.abstractmethod
+    def parameter_bytes(self, encoding, format):
+        """
+        Returns the parameters serialized as bytes.
+        """
+
+    @abc.abstractmethod
+    def parameter_numbers(self):
+        """
+        Returns a DHParameterNumbers.
+        """
+
+
+DHParametersWithSerialization = DHParameters
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DHPrivateKey(object):
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        The bit length of the prime modulus.
+        """
+
+    @abc.abstractmethod
+    def public_key(self):
+        """
+        The DHPublicKey associated with this private key.
+        """
+
+    @abc.abstractmethod
+    def parameters(self):
+        """
+        The DHParameters object associated with this private key.
+        """
+
+    @abc.abstractmethod
+    def exchange(self, peer_public_key):
+        """
+        Given peer's DHPublicKey, carry out the key exchange and
+        return shared key as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DHPrivateKeyWithSerialization(DHPrivateKey):
+    @abc.abstractmethod
+    def private_numbers(self):
+        """
+        Returns a DHPrivateNumbers.
+        """
+
+    @abc.abstractmethod
+    def private_bytes(self, encoding, format, encryption_algorithm):
+        """
+        Returns the key serialized as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DHPublicKey(object):
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        The bit length of the prime modulus.
+        """
+
+    @abc.abstractmethod
+    def parameters(self):
+        """
+        The DHParameters object associated with this public key.
+        """
+
+    @abc.abstractmethod
+    def public_numbers(self):
+        """
+        Returns a DHPublicNumbers.
+        """
+
+    @abc.abstractmethod
+    def public_bytes(self, encoding, format):
+        """
+        Returns the key serialized as bytes.
+        """
+
+
+DHPublicKeyWithSerialization = DHPublicKey

server/www/packages/packages-common/cryptography/hazmat/primitives/asymmetric/dsa.py

@@ -0,0 +1,254 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography import utils
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DSAParameters(object):
+    @abc.abstractmethod
+    def generate_private_key(self):
+        """
+        Generates and returns a DSAPrivateKey.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DSAParametersWithNumbers(DSAParameters):
+    @abc.abstractmethod
+    def parameter_numbers(self):
+        """
+        Returns a DSAParameterNumbers.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DSAPrivateKey(object):
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        The bit length of the prime modulus.
+        """
+
+    @abc.abstractmethod
+    def public_key(self):
+        """
+        The DSAPublicKey associated with this private key.
+        """
+
+    @abc.abstractmethod
+    def parameters(self):
+        """
+        The DSAParameters object associated with this private key.
+        """
+
+    @abc.abstractmethod
+    def signer(self, signature_algorithm):
+        """
+        Returns an AsymmetricSignatureContext used for signing data.
+        """
+
+    @abc.abstractmethod
+    def sign(self, data, algorithm):
+        """
+        Signs the data
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DSAPrivateKeyWithSerialization(DSAPrivateKey):
+    @abc.abstractmethod
+    def private_numbers(self):
+        """
+        Returns a DSAPrivateNumbers.
+        """
+
+    @abc.abstractmethod
+    def private_bytes(self, encoding, format, encryption_algorithm):
+        """
+        Returns the key serialized as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class DSAPublicKey(object):
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        The bit length of the prime modulus.
+        """
+
+    @abc.abstractmethod
+    def parameters(self):
+        """
+        The DSAParameters object associated with this public key.
+        """
+
+    @abc.abstractmethod
+    def verifier(self, signature, signature_algorithm):
+        """
+        Returns an AsymmetricVerificationContext used for signing data.
+        """
+
+    @abc.abstractmethod
+    def public_numbers(self):
+        """
+        Returns a DSAPublicNumbers.
+        """
+
+    @abc.abstractmethod
+    def public_bytes(self, encoding, format):
+        """
+        Returns the key serialized as bytes.
+        """
+
+    @abc.abstractmethod
+    def verify(self, signature, data, algorithm):
+        """
+        Verifies the signature of the data.
+        """
+
+
+DSAPublicKeyWithSerialization = DSAPublicKey
+
+
+def generate_parameters(key_size, backend):
+    return backend.generate_dsa_parameters(key_size)
+
+
+def generate_private_key(key_size, backend):
+    return backend.generate_dsa_private_key_and_parameters(key_size)
+
+
+def _check_dsa_parameters(parameters):
+    if parameters.p.bit_length() not in [1024, 2048, 3072]:
+        raise ValueError("p must be exactly 1024, 2048, or 3072 bits long")
+    if parameters.q.bit_length() not in [160, 224, 256]:
+        raise ValueError("q must be exactly 160, 224, or 256 bits long")
+
+    if not (1 < parameters.g < parameters.p):
+        raise ValueError("g, p don't satisfy 1 < g < p.")
+
+
+def _check_dsa_private_numbers(numbers):
+    parameters = numbers.public_numbers.parameter_numbers
+    _check_dsa_parameters(parameters)
+    if numbers.x <= 0 or numbers.x >= parameters.q:
+        raise ValueError("x must be > 0 and < q.")
+
+    if numbers.public_numbers.y != pow(parameters.g, numbers.x, parameters.p):
+        raise ValueError("y must be equal to (g ** x % p).")
+
+
+class DSAParameterNumbers(object):
+    def __init__(self, p, q, g):
+        if (
+            not isinstance(p, six.integer_types) or
+            not isinstance(q, six.integer_types) or
+            not isinstance(g, six.integer_types)
+        ):
+            raise TypeError(
+                "DSAParameterNumbers p, q, and g arguments must be integers."
+            )
+
+        self._p = p
+        self._q = q
+        self._g = g
+
+    p = utils.read_only_property("_p")
+    q = utils.read_only_property("_q")
+    g = utils.read_only_property("_g")
+
+    def parameters(self, backend):
+        return backend.load_dsa_parameter_numbers(self)
+
+    def __eq__(self, other):
+        if not isinstance(other, DSAParameterNumbers):
+            return NotImplemented
+
+        return self.p == other.p and self.q == other.q and self.g == other.g
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __repr__(self):
+        return (
+            "<DSAParameterNumbers(p={self.p}, q={self.q}, g={self.g})>".format(
+                self=self
+            )
+        )
+
+
+class DSAPublicNumbers(object):
+    def __init__(self, y, parameter_numbers):
+        if not isinstance(y, six.integer_types):
+            raise TypeError("DSAPublicNumbers y argument must be an integer.")
+
+        if not isinstance(parameter_numbers, DSAParameterNumbers):
+            raise TypeError(
+                "parameter_numbers must be a DSAParameterNumbers instance."
+            )
+
+        self._y = y
+        self._parameter_numbers = parameter_numbers
+
+    y = utils.read_only_property("_y")
+    parameter_numbers = utils.read_only_property("_parameter_numbers")
+
+    def public_key(self, backend):
+        return backend.load_dsa_public_numbers(self)
+
+    def __eq__(self, other):
+        if not isinstance(other, DSAPublicNumbers):
+            return NotImplemented
+
+        return (
+            self.y == other.y and
+            self.parameter_numbers == other.parameter_numbers
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __repr__(self):
+        return (
+            "<DSAPublicNumbers(y={self.y}, "
+            "parameter_numbers={self.parameter_numbers})>".format(self=self)
+        )
+
+
+class DSAPrivateNumbers(object):
+    def __init__(self, x, public_numbers):
+        if not isinstance(x, six.integer_types):
+            raise TypeError("DSAPrivateNumbers x argument must be an integer.")
+
+        if not isinstance(public_numbers, DSAPublicNumbers):
+            raise TypeError(
+                "public_numbers must be a DSAPublicNumbers instance."
+            )
+        self._public_numbers = public_numbers
+        self._x = x
+
+    x = utils.read_only_property("_x")
+    public_numbers = utils.read_only_property("_public_numbers")
+
+    def private_key(self, backend):
+        return backend.load_dsa_private_numbers(self)
+
+    def __eq__(self, other):
+        if not isinstance(other, DSAPrivateNumbers):
+            return NotImplemented
+
+        return (
+            self.x == other.x and self.public_numbers == other.public_numbers
+        )
+
+    def __ne__(self, other):
+        return not self == other

server/www/packages/packages-common/cryptography/hazmat/primitives/asymmetric/ec.py

@@ -0,0 +1,411 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography import utils
+
+
+@six.add_metaclass(abc.ABCMeta)
+class EllipticCurve(object):
+    @abc.abstractproperty
+    def name(self):
+        """
+        The name of the curve. e.g. secp256r1.
+        """
+
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        Bit size of a secret scalar for the curve.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class EllipticCurveSignatureAlgorithm(object):
+    @abc.abstractproperty
+    def algorithm(self):
+        """
+        The digest algorithm used with this signature.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class EllipticCurvePrivateKey(object):
+    @abc.abstractmethod
+    def signer(self, signature_algorithm):
+        """
+        Returns an AsymmetricSignatureContext used for signing data.
+        """
+
+    @abc.abstractmethod
+    def exchange(self, algorithm, peer_public_key):
+        """
+        Performs a key exchange operation using the provided algorithm with the
+        provided peer's public key.
+        """
+
+    @abc.abstractmethod
+    def public_key(self):
+        """
+        The EllipticCurvePublicKey for this private key.
+        """
+
+    @abc.abstractproperty
+    def curve(self):
+        """
+        The EllipticCurve that this key is on.
+        """
+
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        Bit size of a secret scalar for the curve.
+        """
+
+    @abc.abstractproperty
+    def sign(self, data, signature_algorithm):
+        """
+        Signs the data
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class EllipticCurvePrivateKeyWithSerialization(EllipticCurvePrivateKey):
+    @abc.abstractmethod
+    def private_numbers(self):
+        """
+        Returns an EllipticCurvePrivateNumbers.
+        """
+
+    @abc.abstractmethod
+    def private_bytes(self, encoding, format, encryption_algorithm):
+        """
+        Returns the key serialized as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class EllipticCurvePublicKey(object):
+    @abc.abstractmethod
+    def verifier(self, signature, signature_algorithm):
+        """
+        Returns an AsymmetricVerificationContext used for signing data.
+        """
+
+    @abc.abstractproperty
+    def curve(self):
+        """
+        The EllipticCurve that this key is on.
+        """
+
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        Bit size of a secret scalar for the curve.
+        """
+
+    @abc.abstractmethod
+    def public_numbers(self):
+        """
+        Returns an EllipticCurvePublicNumbers.
+        """
+
+    @abc.abstractmethod
+    def public_bytes(self, encoding, format):
+        """
+        Returns the key serialized as bytes.
+        """
+
+    @abc.abstractmethod
+    def verify(self, signature, data, signature_algorithm):
+        """
+        Verifies the signature of the data.
+        """
+
+
+EllipticCurvePublicKeyWithSerialization = EllipticCurvePublicKey
+
+
+@utils.register_interface(EllipticCurve)
+class SECT571R1(object):
+    name = "sect571r1"
+    key_size = 570
+
+
+@utils.register_interface(EllipticCurve)
+class SECT409R1(object):
+    name = "sect409r1"
+    key_size = 409
+
+
+@utils.register_interface(EllipticCurve)
+class SECT283R1(object):
+    name = "sect283r1"
+    key_size = 283
+
+
+@utils.register_interface(EllipticCurve)
+class SECT233R1(object):
+    name = "sect233r1"
+    key_size = 233
+
+
+@utils.register_interface(EllipticCurve)
+class SECT163R2(object):
+    name = "sect163r2"
+    key_size = 163
+
+
+@utils.register_interface(EllipticCurve)
+class SECT571K1(object):
+    name = "sect571k1"
+    key_size = 571
+
+
+@utils.register_interface(EllipticCurve)
+class SECT409K1(object):
+    name = "sect409k1"
+    key_size = 409
+
+
+@utils.register_interface(EllipticCurve)
+class SECT283K1(object):
+    name = "sect283k1"
+    key_size = 283
+
+
+@utils.register_interface(EllipticCurve)
+class SECT233K1(object):
+    name = "sect233k1"
+    key_size = 233
+
+
+@utils.register_interface(EllipticCurve)
+class SECT163K1(object):
+    name = "sect163k1"
+    key_size = 163
+
+
+@utils.register_interface(EllipticCurve)
+class SECP521R1(object):
+    name = "secp521r1"
+    key_size = 521
+
+
+@utils.register_interface(EllipticCurve)
+class SECP384R1(object):
+    name = "secp384r1"
+    key_size = 384
+
+
+@utils.register_interface(EllipticCurve)
+class SECP256R1(object):
+    name = "secp256r1"
+    key_size = 256
+
+
+@utils.register_interface(EllipticCurve)
+class SECP256K1(object):
+    name = "secp256k1"
+    key_size = 256
+
+
+@utils.register_interface(EllipticCurve)
+class SECP224R1(object):
+    name = "secp224r1"
+    key_size = 224
+
+
+@utils.register_interface(EllipticCurve)
+class SECP192R1(object):
+    name = "secp192r1"
+    key_size = 192
+
+
+@utils.register_interface(EllipticCurve)
+class BrainpoolP256R1(object):
+    name = "brainpoolP256r1"
+    key_size = 256
+
+
+@utils.register_interface(EllipticCurve)
+class BrainpoolP384R1(object):
+    name = "brainpoolP384r1"
+    key_size = 384
+
+
+@utils.register_interface(EllipticCurve)
+class BrainpoolP512R1(object):
+    name = "brainpoolP512r1"
+    key_size = 512
+
+
+_CURVE_TYPES = {
+    "prime192v1": SECP192R1,
+    "prime256v1": SECP256R1,
+
+    "secp192r1": SECP192R1,
+    "secp224r1": SECP224R1,
+    "secp256r1": SECP256R1,
+    "secp384r1": SECP384R1,
+    "secp521r1": SECP521R1,
+    "secp256k1": SECP256K1,
+
+    "sect163k1": SECT163K1,
+    "sect233k1": SECT233K1,
+    "sect283k1": SECT283K1,
+    "sect409k1": SECT409K1,
+    "sect571k1": SECT571K1,
+
+    "sect163r2": SECT163R2,
+    "sect233r1": SECT233R1,
+    "sect283r1": SECT283R1,
+    "sect409r1": SECT409R1,
+    "sect571r1": SECT571R1,
+
+    "brainpoolP256r1": BrainpoolP256R1,
+    "brainpoolP384r1": BrainpoolP384R1,
+    "brainpoolP512r1": BrainpoolP512R1,
+}
+
+
+@utils.register_interface(EllipticCurveSignatureAlgorithm)
+class ECDSA(object):
+    def __init__(self, algorithm):
+        self._algorithm = algorithm
+
+    algorithm = utils.read_only_property("_algorithm")
+
+
+def generate_private_key(curve, backend):
+    return backend.generate_elliptic_curve_private_key(curve)
+
+
+def derive_private_key(private_value, curve, backend):
+    if not isinstance(private_value, six.integer_types):
+        raise TypeError("private_value must be an integer type.")
+
+    if private_value <= 0:
+        raise ValueError("private_value must be a positive integer.")
+
+    if not isinstance(curve, EllipticCurve):
+        raise TypeError("curve must provide the EllipticCurve interface.")
+
+    return backend.derive_elliptic_curve_private_key(private_value, curve)
+
+
+class EllipticCurvePublicNumbers(object):
+    def __init__(self, x, y, curve):
+        if (
+            not isinstance(x, six.integer_types) or
+            not isinstance(y, six.integer_types)
+        ):
+            raise TypeError("x and y must be integers.")
+
+        if not isinstance(curve, EllipticCurve):
+            raise TypeError("curve must provide the EllipticCurve interface.")
+
+        self._y = y
+        self._x = x
+        self._curve = curve
+
+    def public_key(self, backend):
+        return backend.load_elliptic_curve_public_numbers(self)
+
+    def encode_point(self):
+        # key_size is in bits. Convert to bytes and round up
+        byte_length = (self.curve.key_size + 7) // 8
+        return (
+            b'\x04' + utils.int_to_bytes(self.x, byte_length) +
+            utils.int_to_bytes(self.y, byte_length)
+        )
+
+    @classmethod
+    def from_encoded_point(cls, curve, data):
+        if not isinstance(curve, EllipticCurve):
+            raise TypeError("curve must be an EllipticCurve instance")
+
+        if data.startswith(b'\x04'):
+            # key_size is in bits. Convert to bytes and round up
+            byte_length = (curve.key_size + 7) // 8
+            if len(data) == 2 * byte_length + 1:
+                x = utils.int_from_bytes(data[1:byte_length + 1], 'big')
+                y = utils.int_from_bytes(data[byte_length + 1:], 'big')
+                return cls(x, y, curve)
+            else:
+                raise ValueError('Invalid elliptic curve point data length')
+        else:
+            raise ValueError('Unsupported elliptic curve point type')
+
+    curve = utils.read_only_property("_curve")
+    x = utils.read_only_property("_x")
+    y = utils.read_only_property("_y")
+
+    def __eq__(self, other):
+        if not isinstance(other, EllipticCurvePublicNumbers):
+            return NotImplemented
+
+        return (
+            self.x == other.x and
+            self.y == other.y and
+            self.curve.name == other.curve.name and
+            self.curve.key_size == other.curve.key_size
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash((self.x, self.y, self.curve.name, self.curve.key_size))
+
+    def __repr__(self):
+        return (
+            "<EllipticCurvePublicNumbers(curve={0.curve.name}, x={0.x}, "
+            "y={0.y}>".format(self)
+        )
+
+
+class EllipticCurvePrivateNumbers(object):
+    def __init__(self, private_value, public_numbers):
+        if not isinstance(private_value, six.integer_types):
+            raise TypeError("private_value must be an integer.")
+
+        if not isinstance(public_numbers, EllipticCurvePublicNumbers):
+            raise TypeError(
+                "public_numbers must be an EllipticCurvePublicNumbers "
+                "instance."
+            )
+
+        self._private_value = private_value
+        self._public_numbers = public_numbers
+
+    def private_key(self, backend):
+        return backend.load_elliptic_curve_private_numbers(self)
+
+    private_value = utils.read_only_property("_private_value")
+    public_numbers = utils.read_only_property("_public_numbers")
+
+    def __eq__(self, other):
+        if not isinstance(other, EllipticCurvePrivateNumbers):
+            return NotImplemented
+
+        return (
+            self.private_value == other.private_value and
+            self.public_numbers == other.public_numbers
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash((self.private_value, self.public_numbers))
+
+
+class ECDH(object):
+    pass

server/www/packages/packages-common/cryptography/hazmat/primitives/asymmetric/padding.py

@@ -0,0 +1,79 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+import math
+
+import six
+
+from cryptography import utils
+from cryptography.hazmat.primitives import hashes
+from cryptography.hazmat.primitives.asymmetric import rsa
+
+
+@six.add_metaclass(abc.ABCMeta)
+class AsymmetricPadding(object):
+    @abc.abstractproperty
+    def name(self):
+        """
+        A string naming this padding (e.g. "PSS", "PKCS1").
+        """
+
+
+@utils.register_interface(AsymmetricPadding)
+class PKCS1v15(object):
+    name = "EMSA-PKCS1-v1_5"
+
+
+@utils.register_interface(AsymmetricPadding)
+class PSS(object):
+    MAX_LENGTH = object()
+    name = "EMSA-PSS"
+
+    def __init__(self, mgf, salt_length):
+        self._mgf = mgf
+
+        if (not isinstance(salt_length, six.integer_types) and
+                salt_length is not self.MAX_LENGTH):
+            raise TypeError("salt_length must be an integer.")
+
+        if salt_length is not self.MAX_LENGTH and salt_length < 0:
+            raise ValueError("salt_length must be zero or greater.")
+
+        self._salt_length = salt_length
+
+
+@utils.register_interface(AsymmetricPadding)
+class OAEP(object):
+    name = "EME-OAEP"
+
+    def __init__(self, mgf, algorithm, label):
+        if not isinstance(algorithm, hashes.HashAlgorithm):
+            raise TypeError("Expected instance of hashes.HashAlgorithm.")
+
+        self._mgf = mgf
+        self._algorithm = algorithm
+        self._label = label
+
+
+class MGF1(object):
+    MAX_LENGTH = object()
+
+    def __init__(self, algorithm):
+        if not isinstance(algorithm, hashes.HashAlgorithm):
+            raise TypeError("Expected instance of hashes.HashAlgorithm.")
+
+        self._algorithm = algorithm
+
+
+def calculate_max_pss_salt_length(key, hash_algorithm):
+    if not isinstance(key, (rsa.RSAPrivateKey, rsa.RSAPublicKey)):
+        raise TypeError("key must be an RSA public or private key")
+    # bit length - 1 per RFC 3447
+    emlen = int(math.ceil((key.key_size - 1) / 8.0))
+    salt_length = emlen - hash_algorithm.digest_size - 2
+    assert salt_length >= 0
+    return salt_length

server/www/packages/packages-common/cryptography/hazmat/primitives/asymmetric/rsa.py

@@ -0,0 +1,368 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+try:
+    # Only available in math in 3.5+
+    from math import gcd
+except ImportError:
+    from fractions import gcd
+
+import six
+
+from cryptography import utils
+from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
+from cryptography.hazmat.backends.interfaces import RSABackend
+
+
+@six.add_metaclass(abc.ABCMeta)
+class RSAPrivateKey(object):
+    @abc.abstractmethod
+    def signer(self, padding, algorithm):
+        """
+        Returns an AsymmetricSignatureContext used for signing data.
+        """
+
+    @abc.abstractmethod
+    def decrypt(self, ciphertext, padding):
+        """
+        Decrypts the provided ciphertext.
+        """
+
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        The bit length of the public modulus.
+        """
+
+    @abc.abstractmethod
+    def public_key(self):
+        """
+        The RSAPublicKey associated with this private key.
+        """
+
+    @abc.abstractmethod
+    def sign(self, data, padding, algorithm):
+        """
+        Signs the data.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class RSAPrivateKeyWithSerialization(RSAPrivateKey):
+    @abc.abstractmethod
+    def private_numbers(self):
+        """
+        Returns an RSAPrivateNumbers.
+        """
+
+    @abc.abstractmethod
+    def private_bytes(self, encoding, format, encryption_algorithm):
+        """
+        Returns the key serialized as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class RSAPublicKey(object):
+    @abc.abstractmethod
+    def verifier(self, signature, padding, algorithm):
+        """
+        Returns an AsymmetricVerificationContext used for verifying signatures.
+        """
+
+    @abc.abstractmethod
+    def encrypt(self, plaintext, padding):
+        """
+        Encrypts the given plaintext.
+        """
+
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        The bit length of the public modulus.
+        """
+
+    @abc.abstractmethod
+    def public_numbers(self):
+        """
+        Returns an RSAPublicNumbers
+        """
+
+    @abc.abstractmethod
+    def public_bytes(self, encoding, format):
+        """
+        Returns the key serialized as bytes.
+        """
+
+    @abc.abstractmethod
+    def verify(self, signature, data, padding, algorithm):
+        """
+        Verifies the signature of the data.
+        """
+
+
+RSAPublicKeyWithSerialization = RSAPublicKey
+
+
+def generate_private_key(public_exponent, key_size, backend):
+    if not isinstance(backend, RSABackend):
+        raise UnsupportedAlgorithm(
+            "Backend object does not implement RSABackend.",
+            _Reasons.BACKEND_MISSING_INTERFACE
+        )
+
+    _verify_rsa_parameters(public_exponent, key_size)
+    return backend.generate_rsa_private_key(public_exponent, key_size)
+
+
+def _verify_rsa_parameters(public_exponent, key_size):
+    if public_exponent < 3:
+        raise ValueError("public_exponent must be >= 3.")
+
+    if public_exponent & 1 == 0:
+        raise ValueError("public_exponent must be odd.")
+
+    if key_size < 512:
+        raise ValueError("key_size must be at least 512-bits.")
+
+
+def _check_private_key_components(p, q, private_exponent, dmp1, dmq1, iqmp,
+                                  public_exponent, modulus):
+    if modulus < 3:
+        raise ValueError("modulus must be >= 3.")
+
+    if p >= modulus:
+        raise ValueError("p must be < modulus.")
+
+    if q >= modulus:
+        raise ValueError("q must be < modulus.")
+
+    if dmp1 >= modulus:
+        raise ValueError("dmp1 must be < modulus.")
+
+    if dmq1 >= modulus:
+        raise ValueError("dmq1 must be < modulus.")
+
+    if iqmp >= modulus:
+        raise ValueError("iqmp must be < modulus.")
+
+    if private_exponent >= modulus:
+        raise ValueError("private_exponent must be < modulus.")
+
+    if public_exponent < 3 or public_exponent >= modulus:
+        raise ValueError("public_exponent must be >= 3 and < modulus.")
+
+    if public_exponent & 1 == 0:
+        raise ValueError("public_exponent must be odd.")
+
+    if dmp1 & 1 == 0:
+        raise ValueError("dmp1 must be odd.")
+
+    if dmq1 & 1 == 0:
+        raise ValueError("dmq1 must be odd.")
+
+    if p * q != modulus:
+        raise ValueError("p*q must equal modulus.")
+
+
+def _check_public_key_components(e, n):
+    if n < 3:
+        raise ValueError("n must be >= 3.")
+
+    if e < 3 or e >= n:
+        raise ValueError("e must be >= 3 and < n.")
+
+    if e & 1 == 0:
+        raise ValueError("e must be odd.")
+
+
+def _modinv(e, m):
+    """
+    Modular Multiplicative Inverse. Returns x such that: (x*e) mod m == 1
+    """
+    x1, y1, x2, y2 = 1, 0, 0, 1
+    a, b = e, m
+    while b > 0:
+        q, r = divmod(a, b)
+        xn, yn = x1 - q * x2, y1 - q * y2
+        a, b, x1, y1, x2, y2 = b, r, x2, y2, xn, yn
+    return x1 % m
+
+
+def rsa_crt_iqmp(p, q):
+    """
+    Compute the CRT (q ** -1) % p value from RSA primes p and q.
+    """
+    return _modinv(q, p)
+
+
+def rsa_crt_dmp1(private_exponent, p):
+    """
+    Compute the CRT private_exponent % (p - 1) value from the RSA
+    private_exponent (d) and p.
+    """
+    return private_exponent % (p - 1)
+
+
+def rsa_crt_dmq1(private_exponent, q):
+    """
+    Compute the CRT private_exponent % (q - 1) value from the RSA
+    private_exponent (d) and q.
+    """
+    return private_exponent % (q - 1)
+
+
+# Controls the number of iterations rsa_recover_prime_factors will perform
+# to obtain the prime factors. Each iteration increments by 2 so the actual
+# maximum attempts is half this number.
+_MAX_RECOVERY_ATTEMPTS = 1000
+
+
+def rsa_recover_prime_factors(n, e, d):
+    """
+    Compute factors p and q from the private exponent d. We assume that n has
+    no more than two factors. This function is adapted from code in PyCrypto.
+    """
+    # See 8.2.2(i) in Handbook of Applied Cryptography.
+    ktot = d * e - 1
+    # The quantity d*e-1 is a multiple of phi(n), even,
+    # and can be represented as t*2^s.
+    t = ktot
+    while t % 2 == 0:
+        t = t // 2
+    # Cycle through all multiplicative inverses in Zn.
+    # The algorithm is non-deterministic, but there is a 50% chance
+    # any candidate a leads to successful factoring.
+    # See "Digitalized Signatures and Public Key Functions as Intractable
+    # as Factorization", M. Rabin, 1979
+    spotted = False
+    a = 2
+    while not spotted and a < _MAX_RECOVERY_ATTEMPTS:
+        k = t
+        # Cycle through all values a^{t*2^i}=a^k
+        while k < ktot:
+            cand = pow(a, k, n)
+            # Check if a^k is a non-trivial root of unity (mod n)
+            if cand != 1 and cand != (n - 1) and pow(cand, 2, n) == 1:
+                # We have found a number such that (cand-1)(cand+1)=0 (mod n).
+                # Either of the terms divides n.
+                p = gcd(cand + 1, n)
+                spotted = True
+                break
+            k *= 2
+        # This value was not any good... let's try another!
+        a += 2
+    if not spotted:
+        raise ValueError("Unable to compute factors p and q from exponent d.")
+    # Found !
+    q, r = divmod(n, p)
+    assert r == 0
+    p, q = sorted((p, q), reverse=True)
+    return (p, q)
+
+
+class RSAPrivateNumbers(object):
+    def __init__(self, p, q, d, dmp1, dmq1, iqmp,
+                 public_numbers):
+        if (
+            not isinstance(p, six.integer_types) or
+            not isinstance(q, six.integer_types) or
+            not isinstance(d, six.integer_types) or
+            not isinstance(dmp1, six.integer_types) or
+            not isinstance(dmq1, six.integer_types) or
+            not isinstance(iqmp, six.integer_types)
+        ):
+            raise TypeError(
+                "RSAPrivateNumbers p, q, d, dmp1, dmq1, iqmp arguments must"
+                " all be an integers."
+            )
+
+        if not isinstance(public_numbers, RSAPublicNumbers):
+            raise TypeError(
+                "RSAPrivateNumbers public_numbers must be an RSAPublicNumbers"
+                " instance."
+            )
+
+        self._p = p
+        self._q = q
+        self._d = d
+        self._dmp1 = dmp1
+        self._dmq1 = dmq1
+        self._iqmp = iqmp
+        self._public_numbers = public_numbers
+
+    p = utils.read_only_property("_p")
+    q = utils.read_only_property("_q")
+    d = utils.read_only_property("_d")
+    dmp1 = utils.read_only_property("_dmp1")
+    dmq1 = utils.read_only_property("_dmq1")
+    iqmp = utils.read_only_property("_iqmp")
+    public_numbers = utils.read_only_property("_public_numbers")
+
+    def private_key(self, backend):
+        return backend.load_rsa_private_numbers(self)
+
+    def __eq__(self, other):
+        if not isinstance(other, RSAPrivateNumbers):
+            return NotImplemented
+
+        return (
+            self.p == other.p and
+            self.q == other.q and
+            self.d == other.d and
+            self.dmp1 == other.dmp1 and
+            self.dmq1 == other.dmq1 and
+            self.iqmp == other.iqmp and
+            self.public_numbers == other.public_numbers
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash((
+            self.p,
+            self.q,
+            self.d,
+            self.dmp1,
+            self.dmq1,
+            self.iqmp,
+            self.public_numbers,
+        ))
+
+
+class RSAPublicNumbers(object):
+    def __init__(self, e, n):
+        if (
+            not isinstance(e, six.integer_types) or
+            not isinstance(n, six.integer_types)
+        ):
+            raise TypeError("RSAPublicNumbers arguments must be integers.")
+
+        self._e = e
+        self._n = n
+
+    e = utils.read_only_property("_e")
+    n = utils.read_only_property("_n")
+
+    def public_key(self, backend):
+        return backend.load_rsa_public_numbers(self)
+
+    def __repr__(self):
+        return "<RSAPublicNumbers(e={0.e}, n={0.n})>".format(self)
+
+    def __eq__(self, other):
+        if not isinstance(other, RSAPublicNumbers):
+            return NotImplemented
+
+        return self.e == other.e and self.n == other.n
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash((self.e, self.n))

server/www/packages/packages-common/cryptography/hazmat/primitives/asymmetric/utils.py

@@ -0,0 +1,60 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import warnings
+
+from asn1crypto.algos import DSASignature
+
+import six
+
+from cryptography import utils
+from cryptography.hazmat.primitives import hashes
+
+
+def decode_rfc6979_signature(signature):
+    warnings.warn(
+        "decode_rfc6979_signature is deprecated and will "
+        "be removed in a future version, use decode_dss_signature instead.",
+        utils.PersistentlyDeprecated,
+        stacklevel=2
+    )
+    return decode_dss_signature(signature)
+
+
+def decode_dss_signature(signature):
+    data = DSASignature.load(signature, strict=True).native
+    return data['r'], data['s']
+
+
+def encode_rfc6979_signature(r, s):
+    warnings.warn(
+        "encode_rfc6979_signature is deprecated and will "
+        "be removed in a future version, use encode_dss_signature instead.",
+        utils.PersistentlyDeprecated,
+        stacklevel=2
+    )
+    return encode_dss_signature(r, s)
+
+
+def encode_dss_signature(r, s):
+    if (
+        not isinstance(r, six.integer_types) or
+        not isinstance(s, six.integer_types)
+    ):
+        raise ValueError("Both r and s must be integers")
+
+    return DSASignature({'r': r, 's': s}).dump()
+
+
+class Prehashed(object):
+    def __init__(self, algorithm):
+        if not isinstance(algorithm, hashes.HashAlgorithm):
+            raise TypeError("Expected instance of HashAlgorithm.")
+
+        self._algorithm = algorithm
+        self._digest_size = algorithm.digest_size
+
+    digest_size = utils.read_only_property("_digest_size")

server/www/packages/packages-common/cryptography/hazmat/primitives/asymmetric/x25519.py

@@ -0,0 +1,54 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography.exceptions import UnsupportedAlgorithm, _Reasons
+
+
+@six.add_metaclass(abc.ABCMeta)
+class X25519PublicKey(object):
+    @classmethod
+    def from_public_bytes(cls, data):
+        from cryptography.hazmat.backends.openssl.backend import backend
+        if not backend.x25519_supported():
+            raise UnsupportedAlgorithm(
+                "X25519 is not supported by this version of OpenSSL.",
+                _Reasons.UNSUPPORTED_EXCHANGE_ALGORITHM
+            )
+        return backend.x25519_load_public_bytes(data)
+
+    @abc.abstractmethod
+    def public_bytes(self):
+        pass
+
+
+@six.add_metaclass(abc.ABCMeta)
+class X25519PrivateKey(object):
+    @classmethod
+    def generate(cls):
+        from cryptography.hazmat.backends.openssl.backend import backend
+        if not backend.x25519_supported():
+            raise UnsupportedAlgorithm(
+                "X25519 is not supported by this version of OpenSSL.",
+                _Reasons.UNSUPPORTED_EXCHANGE_ALGORITHM
+            )
+        return backend.x25519_generate_key()
+
+    @classmethod
+    def _from_private_bytes(cls, data):
+        from cryptography.hazmat.backends.openssl.backend import backend
+        return backend.x25519_load_private_bytes(data)
+
+    @abc.abstractmethod
+    def public_key(self):
+        pass
+
+    @abc.abstractmethod
+    def exchange(self, peer_public_key):
+        pass

server/www/packages/packages-common/cryptography/hazmat/primitives/ciphers/__init__.py

@@ -0,0 +1,21 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography.hazmat.primitives.ciphers.base import (
+    AEADCipherContext, AEADDecryptionContext, AEADEncryptionContext,
+    BlockCipherAlgorithm, Cipher, CipherAlgorithm, CipherContext
+)
+
+
+__all__ = [
+    "Cipher",
+    "CipherAlgorithm",
+    "BlockCipherAlgorithm",
+    "CipherContext",
+    "AEADCipherContext",
+    "AEADDecryptionContext",
+    "AEADEncryptionContext",
+]

server/www/packages/packages-common/cryptography/hazmat/primitives/ciphers/aead.py

@@ -0,0 +1,188 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import os
+
+from cryptography import exceptions, utils
+from cryptography.hazmat.backends.openssl import aead
+from cryptography.hazmat.backends.openssl.backend import backend
+
+
+class ChaCha20Poly1305(object):
+    _MAX_SIZE = 2 ** 32
+
+    def __init__(self, key):
+        if not backend.aead_cipher_supported(self):
+            raise exceptions.UnsupportedAlgorithm(
+                "ChaCha20Poly1305 is not supported by this version of OpenSSL",
+                exceptions._Reasons.UNSUPPORTED_CIPHER
+            )
+        utils._check_bytes("key", key)
+
+        if len(key) != 32:
+            raise ValueError("ChaCha20Poly1305 key must be 32 bytes.")
+
+        self._key = key
+
+    @classmethod
+    def generate_key(cls):
+        return os.urandom(32)
+
+    def encrypt(self, nonce, data, associated_data):
+        if associated_data is None:
+            associated_data = b""
+
+        if len(data) > self._MAX_SIZE or len(associated_data) > self._MAX_SIZE:
+            # This is OverflowError to match what cffi would raise
+            raise OverflowError(
+                "Data or associated data too long. Max 2**32 bytes"
+            )
+
+        self._check_params(nonce, data, associated_data)
+        return aead._encrypt(
+            backend, self, nonce, data, associated_data, 16
+        )
+
+    def decrypt(self, nonce, data, associated_data):
+        if associated_data is None:
+            associated_data = b""
+
+        self._check_params(nonce, data, associated_data)
+        return aead._decrypt(
+            backend, self, nonce, data, associated_data, 16
+        )
+
+    def _check_params(self, nonce, data, associated_data):
+        utils._check_bytes("nonce", nonce)
+        utils._check_bytes("data", data)
+        utils._check_bytes("associated_data", associated_data)
+        if len(nonce) != 12:
+            raise ValueError("Nonce must be 12 bytes")
+
+
+class AESCCM(object):
+    _MAX_SIZE = 2 ** 32
+
+    def __init__(self, key, tag_length=16):
+        utils._check_bytes("key", key)
+        if len(key) not in (16, 24, 32):
+            raise ValueError("AESCCM key must be 128, 192, or 256 bits.")
+
+        self._key = key
+        if not isinstance(tag_length, int):
+            raise TypeError("tag_length must be an integer")
+
+        if tag_length not in (4, 6, 8, 12, 14, 16):
+            raise ValueError("Invalid tag_length")
+
+        self._tag_length = tag_length
+
+        if not backend.aead_cipher_supported(self):
+            raise exceptions.UnsupportedAlgorithm(
+                "AESCCM is not supported by this version of OpenSSL",
+                exceptions._Reasons.UNSUPPORTED_CIPHER
+            )
+
+    @classmethod
+    def generate_key(cls, bit_length):
+        if not isinstance(bit_length, int):
+            raise TypeError("bit_length must be an integer")
+
+        if bit_length not in (128, 192, 256):
+            raise ValueError("bit_length must be 128, 192, or 256")
+
+        return os.urandom(bit_length // 8)
+
+    def encrypt(self, nonce, data, associated_data):
+        if associated_data is None:
+            associated_data = b""
+
+        if len(data) > self._MAX_SIZE or len(associated_data) > self._MAX_SIZE:
+            # This is OverflowError to match what cffi would raise
+            raise OverflowError(
+                "Data or associated data too long. Max 2**32 bytes"
+            )
+
+        self._check_params(nonce, data, associated_data)
+        self._validate_lengths(nonce, len(data))
+        return aead._encrypt(
+            backend, self, nonce, data, associated_data, self._tag_length
+        )
+
+    def decrypt(self, nonce, data, associated_data):
+        if associated_data is None:
+            associated_data = b""
+
+        self._check_params(nonce, data, associated_data)
+        return aead._decrypt(
+            backend, self, nonce, data, associated_data, self._tag_length
+        )
+
+    def _validate_lengths(self, nonce, data_len):
+        # For information about computing this, see
+        # https://tools.ietf.org/html/rfc3610#section-2.1
+        l_val = 15 - len(nonce)
+        if 2 ** (8 * l_val) < data_len:
+            raise ValueError("Nonce too long for data")
+
+    def _check_params(self, nonce, data, associated_data):
+        utils._check_bytes("nonce", nonce)
+        utils._check_bytes("data", data)
+        utils._check_bytes("associated_data", associated_data)
+        if not 7 <= len(nonce) <= 13:
+            raise ValueError("Nonce must be between 7 and 13 bytes")
+
+
+class AESGCM(object):
+    _MAX_SIZE = 2 ** 32
+
+    def __init__(self, key):
+        utils._check_bytes("key", key)
+        if len(key) not in (16, 24, 32):
+            raise ValueError("AESGCM key must be 128, 192, or 256 bits.")
+
+        self._key = key
+
+    @classmethod
+    def generate_key(cls, bit_length):
+        if not isinstance(bit_length, int):
+            raise TypeError("bit_length must be an integer")
+
+        if bit_length not in (128, 192, 256):
+            raise ValueError("bit_length must be 128, 192, or 256")
+
+        return os.urandom(bit_length // 8)
+
+    def encrypt(self, nonce, data, associated_data):
+        if associated_data is None:
+            associated_data = b""
+
+        if len(data) > self._MAX_SIZE or len(associated_data) > self._MAX_SIZE:
+            # This is OverflowError to match what cffi would raise
+            raise OverflowError(
+                "Data or associated data too long. Max 2**32 bytes"
+            )
+
+        self._check_params(nonce, data, associated_data)
+        return aead._encrypt(
+            backend, self, nonce, data, associated_data, 16
+        )
+
+    def decrypt(self, nonce, data, associated_data):
+        if associated_data is None:
+            associated_data = b""
+
+        self._check_params(nonce, data, associated_data)
+        return aead._decrypt(
+            backend, self, nonce, data, associated_data, 16
+        )
+
+    def _check_params(self, nonce, data, associated_data):
+        utils._check_bytes("nonce", nonce)
+        utils._check_bytes("data", data)
+        utils._check_bytes("associated_data", associated_data)
+        if len(nonce) == 0:
+            raise ValueError("Nonce must be at least 1 byte")

server/www/packages/packages-common/cryptography/hazmat/primitives/ciphers/algorithms.py

@@ -0,0 +1,168 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.hazmat.primitives.ciphers import (
+    BlockCipherAlgorithm, CipherAlgorithm
+)
+from cryptography.hazmat.primitives.ciphers.modes import ModeWithNonce
+
+
+def _verify_key_size(algorithm, key):
+    # Verify that the key is instance of bytes
+    utils._check_bytes("key", key)
+
+    # Verify that the key size matches the expected key size
+    if len(key) * 8 not in algorithm.key_sizes:
+        raise ValueError("Invalid key size ({0}) for {1}.".format(
+            len(key) * 8, algorithm.name
+        ))
+    return key
+
+
+@utils.register_interface(BlockCipherAlgorithm)
+@utils.register_interface(CipherAlgorithm)
+class AES(object):
+    name = "AES"
+    block_size = 128
+    # 512 added to support AES-256-XTS, which uses 512-bit keys
+    key_sizes = frozenset([128, 192, 256, 512])
+
+    def __init__(self, key):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8
+
+
+@utils.register_interface(BlockCipherAlgorithm)
+@utils.register_interface(CipherAlgorithm)
+class Camellia(object):
+    name = "camellia"
+    block_size = 128
+    key_sizes = frozenset([128, 192, 256])
+
+    def __init__(self, key):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8
+
+
+@utils.register_interface(BlockCipherAlgorithm)
+@utils.register_interface(CipherAlgorithm)
+class TripleDES(object):
+    name = "3DES"
+    block_size = 64
+    key_sizes = frozenset([64, 128, 192])
+
+    def __init__(self, key):
+        if len(key) == 8:
+            key += key + key
+        elif len(key) == 16:
+            key += key[:8]
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8
+
+
+@utils.register_interface(BlockCipherAlgorithm)
+@utils.register_interface(CipherAlgorithm)
+class Blowfish(object):
+    name = "Blowfish"
+    block_size = 64
+    key_sizes = frozenset(range(32, 449, 8))
+
+    def __init__(self, key):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8
+
+
+@utils.register_interface(BlockCipherAlgorithm)
+@utils.register_interface(CipherAlgorithm)
+class CAST5(object):
+    name = "CAST5"
+    block_size = 64
+    key_sizes = frozenset(range(40, 129, 8))
+
+    def __init__(self, key):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8
+
+
+@utils.register_interface(CipherAlgorithm)
+class ARC4(object):
+    name = "RC4"
+    key_sizes = frozenset([40, 56, 64, 80, 128, 160, 192, 256])
+
+    def __init__(self, key):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8
+
+
+@utils.register_interface(CipherAlgorithm)
+class IDEA(object):
+    name = "IDEA"
+    block_size = 64
+    key_sizes = frozenset([128])
+
+    def __init__(self, key):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8
+
+
+@utils.register_interface(BlockCipherAlgorithm)
+@utils.register_interface(CipherAlgorithm)
+class SEED(object):
+    name = "SEED"
+    block_size = 128
+    key_sizes = frozenset([128])
+
+    def __init__(self, key):
+        self.key = _verify_key_size(self, key)
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8
+
+
+@utils.register_interface(CipherAlgorithm)
+@utils.register_interface(ModeWithNonce)
+class ChaCha20(object):
+    name = "ChaCha20"
+    key_sizes = frozenset([256])
+
+    def __init__(self, key, nonce):
+        self.key = _verify_key_size(self, key)
+        if not isinstance(nonce, bytes):
+            raise TypeError("nonce must be bytes")
+
+        if len(nonce) != 16:
+            raise ValueError("nonce must be 128-bits (16 bytes)")
+
+        self._nonce = nonce
+
+    nonce = utils.read_only_property("_nonce")
+
+    @property
+    def key_size(self):
+        return len(self.key) * 8

server/www/packages/packages-common/cryptography/hazmat/primitives/ciphers/base.py

@@ -0,0 +1,235 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, AlreadyUpdated, NotYetFinalized, UnsupportedAlgorithm,
+    _Reasons
+)
+from cryptography.hazmat.backends.interfaces import CipherBackend
+from cryptography.hazmat.primitives.ciphers import modes
+
+
+@six.add_metaclass(abc.ABCMeta)
+class CipherAlgorithm(object):
+    @abc.abstractproperty
+    def name(self):
+        """
+        A string naming this mode (e.g. "AES", "Camellia").
+        """
+
+    @abc.abstractproperty
+    def key_size(self):
+        """
+        The size of the key being used as an integer in bits (e.g. 128, 256).
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class BlockCipherAlgorithm(object):
+    @abc.abstractproperty
+    def block_size(self):
+        """
+        The size of a block as an integer in bits (e.g. 64, 128).
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class CipherContext(object):
+    @abc.abstractmethod
+    def update(self, data):
+        """
+        Processes the provided bytes through the cipher and returns the results
+        as bytes.
+        """
+
+    @abc.abstractmethod
+    def update_into(self, data, buf):
+        """
+        Processes the provided bytes and writes the resulting data into the
+        provided buffer. Returns the number of bytes written.
+        """
+
+    @abc.abstractmethod
+    def finalize(self):
+        """
+        Returns the results of processing the final block as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class AEADCipherContext(object):
+    @abc.abstractmethod
+    def authenticate_additional_data(self, data):
+        """
+        Authenticates the provided bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class AEADDecryptionContext(object):
+    @abc.abstractmethod
+    def finalize_with_tag(self, tag):
+        """
+        Returns the results of processing the final block as bytes and allows
+        delayed passing of the authentication tag.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class AEADEncryptionContext(object):
+    @abc.abstractproperty
+    def tag(self):
+        """
+        Returns tag bytes. This is only available after encryption is
+        finalized.
+        """
+
+
+class Cipher(object):
+    def __init__(self, algorithm, mode, backend):
+        if not isinstance(backend, CipherBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement CipherBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        if not isinstance(algorithm, CipherAlgorithm):
+            raise TypeError("Expected interface of CipherAlgorithm.")
+
+        if mode is not None:
+            mode.validate_for_algorithm(algorithm)
+
+        self.algorithm = algorithm
+        self.mode = mode
+        self._backend = backend
+
+    def encryptor(self):
+        if isinstance(self.mode, modes.ModeWithAuthenticationTag):
+            if self.mode.tag is not None:
+                raise ValueError(
+                    "Authentication tag must be None when encrypting."
+                )
+        ctx = self._backend.create_symmetric_encryption_ctx(
+            self.algorithm, self.mode
+        )
+        return self._wrap_ctx(ctx, encrypt=True)
+
+    def decryptor(self):
+        ctx = self._backend.create_symmetric_decryption_ctx(
+            self.algorithm, self.mode
+        )
+        return self._wrap_ctx(ctx, encrypt=False)
+
+    def _wrap_ctx(self, ctx, encrypt):
+        if isinstance(self.mode, modes.ModeWithAuthenticationTag):
+            if encrypt:
+                return _AEADEncryptionContext(ctx)
+            else:
+                return _AEADCipherContext(ctx)
+        else:
+            return _CipherContext(ctx)
+
+
+@utils.register_interface(CipherContext)
+class _CipherContext(object):
+    def __init__(self, ctx):
+        self._ctx = ctx
+
+    def update(self, data):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        return self._ctx.update(data)
+
+    def update_into(self, data, buf):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        return self._ctx.update_into(data, buf)
+
+    def finalize(self):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        data = self._ctx.finalize()
+        self._ctx = None
+        return data
+
+
+@utils.register_interface(AEADCipherContext)
+@utils.register_interface(CipherContext)
+@utils.register_interface(AEADDecryptionContext)
+class _AEADCipherContext(object):
+    def __init__(self, ctx):
+        self._ctx = ctx
+        self._bytes_processed = 0
+        self._aad_bytes_processed = 0
+        self._tag = None
+        self._updated = False
+
+    def _check_limit(self, data_size):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        self._updated = True
+        self._bytes_processed += data_size
+        if self._bytes_processed > self._ctx._mode._MAX_ENCRYPTED_BYTES:
+            raise ValueError(
+                "{0} has a maximum encrypted byte limit of {1}".format(
+                    self._ctx._mode.name, self._ctx._mode._MAX_ENCRYPTED_BYTES
+                )
+            )
+
+    def update(self, data):
+        self._check_limit(len(data))
+        return self._ctx.update(data)
+
+    def update_into(self, data, buf):
+        self._check_limit(len(data))
+        return self._ctx.update_into(data, buf)
+
+    def finalize(self):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        data = self._ctx.finalize()
+        self._tag = self._ctx.tag
+        self._ctx = None
+        return data
+
+    def finalize_with_tag(self, tag):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        data = self._ctx.finalize_with_tag(tag)
+        self._tag = self._ctx.tag
+        self._ctx = None
+        return data
+
+    def authenticate_additional_data(self, data):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        if self._updated:
+            raise AlreadyUpdated("Update has been called on this context.")
+
+        self._aad_bytes_processed += len(data)
+        if self._aad_bytes_processed > self._ctx._mode._MAX_AAD_BYTES:
+            raise ValueError(
+                "{0} has a maximum AAD byte limit of {1}".format(
+                    self._ctx._mode.name, self._ctx._mode._MAX_AAD_BYTES
+                )
+            )
+
+        self._ctx.authenticate_additional_data(data)
+
+
+@utils.register_interface(AEADEncryptionContext)
+class _AEADEncryptionContext(_AEADCipherContext):
+    @property
+    def tag(self):
+        if self._ctx is not None:
+            raise NotYetFinalized("You must finalize encryption before "
+                                  "getting the tag.")
+        return self._tag

server/www/packages/packages-common/cryptography/hazmat/primitives/ciphers/modes.py

@@ -0,0 +1,231 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography import utils
+
+
+@six.add_metaclass(abc.ABCMeta)
+class Mode(object):
+    @abc.abstractproperty
+    def name(self):
+        """
+        A string naming this mode (e.g. "ECB", "CBC").
+        """
+
+    @abc.abstractmethod
+    def validate_for_algorithm(self, algorithm):
+        """
+        Checks that all the necessary invariants of this (mode, algorithm)
+        combination are met.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class ModeWithInitializationVector(object):
+    @abc.abstractproperty
+    def initialization_vector(self):
+        """
+        The value of the initialization vector for this mode as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class ModeWithTweak(object):
+    @abc.abstractproperty
+    def tweak(self):
+        """
+        The value of the tweak for this mode as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class ModeWithNonce(object):
+    @abc.abstractproperty
+    def nonce(self):
+        """
+        The value of the nonce for this mode as bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class ModeWithAuthenticationTag(object):
+    @abc.abstractproperty
+    def tag(self):
+        """
+        The value of the tag supplied to the constructor of this mode.
+        """
+
+
+def _check_aes_key_length(self, algorithm):
+    if algorithm.key_size > 256 and algorithm.name == "AES":
+        raise ValueError(
+            "Only 128, 192, and 256 bit keys are allowed for this AES mode"
+        )
+
+
+def _check_iv_length(self, algorithm):
+    if len(self.initialization_vector) * 8 != algorithm.block_size:
+        raise ValueError("Invalid IV size ({0}) for {1}.".format(
+            len(self.initialization_vector), self.name
+        ))
+
+
+def _check_iv_and_key_length(self, algorithm):
+    _check_aes_key_length(self, algorithm)
+    _check_iv_length(self, algorithm)
+
+
+@utils.register_interface(Mode)
+@utils.register_interface(ModeWithInitializationVector)
+class CBC(object):
+    name = "CBC"
+
+    def __init__(self, initialization_vector):
+        if not isinstance(initialization_vector, bytes):
+            raise TypeError("initialization_vector must be bytes")
+
+        self._initialization_vector = initialization_vector
+
+    initialization_vector = utils.read_only_property("_initialization_vector")
+    validate_for_algorithm = _check_iv_and_key_length
+
+
+@utils.register_interface(Mode)
+@utils.register_interface(ModeWithTweak)
+class XTS(object):
+    name = "XTS"
+
+    def __init__(self, tweak):
+        if not isinstance(tweak, bytes):
+            raise TypeError("tweak must be bytes")
+
+        if len(tweak) != 16:
+            raise ValueError("tweak must be 128-bits (16 bytes)")
+
+        self._tweak = tweak
+
+    tweak = utils.read_only_property("_tweak")
+
+    def validate_for_algorithm(self, algorithm):
+        if algorithm.key_size not in (256, 512):
+            raise ValueError(
+                "The XTS specification requires a 256-bit key for AES-128-XTS"
+                " and 512-bit key for AES-256-XTS"
+            )
+
+
+@utils.register_interface(Mode)
+class ECB(object):
+    name = "ECB"
+
+    validate_for_algorithm = _check_aes_key_length
+
+
+@utils.register_interface(Mode)
+@utils.register_interface(ModeWithInitializationVector)
+class OFB(object):
+    name = "OFB"
+
+    def __init__(self, initialization_vector):
+        if not isinstance(initialization_vector, bytes):
+            raise TypeError("initialization_vector must be bytes")
+
+        self._initialization_vector = initialization_vector
+
+    initialization_vector = utils.read_only_property("_initialization_vector")
+    validate_for_algorithm = _check_iv_and_key_length
+
+
+@utils.register_interface(Mode)
+@utils.register_interface(ModeWithInitializationVector)
+class CFB(object):
+    name = "CFB"
+
+    def __init__(self, initialization_vector):
+        if not isinstance(initialization_vector, bytes):
+            raise TypeError("initialization_vector must be bytes")
+
+        self._initialization_vector = initialization_vector
+
+    initialization_vector = utils.read_only_property("_initialization_vector")
+    validate_for_algorithm = _check_iv_and_key_length
+
+
+@utils.register_interface(Mode)
+@utils.register_interface(ModeWithInitializationVector)
+class CFB8(object):
+    name = "CFB8"
+
+    def __init__(self, initialization_vector):
+        if not isinstance(initialization_vector, bytes):
+            raise TypeError("initialization_vector must be bytes")
+
+        self._initialization_vector = initialization_vector
+
+    initialization_vector = utils.read_only_property("_initialization_vector")
+    validate_for_algorithm = _check_iv_and_key_length
+
+
+@utils.register_interface(Mode)
+@utils.register_interface(ModeWithNonce)
+class CTR(object):
+    name = "CTR"
+
+    def __init__(self, nonce):
+        if not isinstance(nonce, bytes):
+            raise TypeError("nonce must be bytes")
+
+        self._nonce = nonce
+
+    nonce = utils.read_only_property("_nonce")
+
+    def validate_for_algorithm(self, algorithm):
+        _check_aes_key_length(self, algorithm)
+        if len(self.nonce) * 8 != algorithm.block_size:
+            raise ValueError("Invalid nonce size ({0}) for {1}.".format(
+                len(self.nonce), self.name
+            ))
+
+
+@utils.register_interface(Mode)
+@utils.register_interface(ModeWithInitializationVector)
+@utils.register_interface(ModeWithAuthenticationTag)
+class GCM(object):
+    name = "GCM"
+    _MAX_ENCRYPTED_BYTES = (2 ** 39 - 256) // 8
+    _MAX_AAD_BYTES = (2 ** 64) // 8
+
+    def __init__(self, initialization_vector, tag=None, min_tag_length=16):
+        # len(initialization_vector) must in [1, 2 ** 64), but it's impossible
+        # to actually construct a bytes object that large, so we don't check
+        # for it
+        if not isinstance(initialization_vector, bytes):
+            raise TypeError("initialization_vector must be bytes")
+        if len(initialization_vector) == 0:
+            raise ValueError("initialization_vector must be at least 1 byte")
+        self._initialization_vector = initialization_vector
+        if tag is not None:
+            if not isinstance(tag, bytes):
+                raise TypeError("tag must be bytes or None")
+            if min_tag_length < 4:
+                raise ValueError("min_tag_length must be >= 4")
+            if len(tag) < min_tag_length:
+                raise ValueError(
+                    "Authentication tag must be {0} bytes or longer.".format(
+                        min_tag_length)
+                )
+        self._tag = tag
+        self._min_tag_length = min_tag_length
+
+    tag = utils.read_only_property("_tag")
+    initialization_vector = utils.read_only_property("_initialization_vector")
+
+    def validate_for_algorithm(self, algorithm):
+        _check_aes_key_length(self, algorithm)

server/www/packages/packages-common/cryptography/hazmat/primitives/cmac.py

@@ -0,0 +1,66 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import CMACBackend
+from cryptography.hazmat.primitives import ciphers, mac
+
+
+@utils.register_interface(mac.MACContext)
+class CMAC(object):
+    def __init__(self, algorithm, backend, ctx=None):
+        if not isinstance(backend, CMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement CMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        if not isinstance(algorithm, ciphers.BlockCipherAlgorithm):
+            raise TypeError(
+                "Expected instance of BlockCipherAlgorithm."
+            )
+        self._algorithm = algorithm
+
+        self._backend = backend
+        if ctx is None:
+            self._ctx = self._backend.create_cmac_ctx(self._algorithm)
+        else:
+            self._ctx = ctx
+
+    def update(self, data):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        if not isinstance(data, bytes):
+            raise TypeError("data must be bytes.")
+        self._ctx.update(data)
+
+    def finalize(self):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        digest = self._ctx.finalize()
+        self._ctx = None
+        return digest
+
+    def verify(self, signature):
+        if not isinstance(signature, bytes):
+            raise TypeError("signature must be bytes.")
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+
+        ctx, self._ctx = self._ctx, None
+        ctx.verify(signature)
+
+    def copy(self):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        return CMAC(
+            self._algorithm,
+            backend=self._backend,
+            ctx=self._ctx.copy()
+        )

server/www/packages/packages-common/cryptography/hazmat/primitives/constant_time.py

@@ -0,0 +1,35 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import hmac
+import warnings
+
+from cryptography import utils
+from cryptography.hazmat.bindings._constant_time import lib
+
+
+if hasattr(hmac, "compare_digest"):
+    def bytes_eq(a, b):
+        if not isinstance(a, bytes) or not isinstance(b, bytes):
+            raise TypeError("a and b must be bytes.")
+
+        return hmac.compare_digest(a, b)
+
+else:
+    warnings.warn(
+        "Support for your Python version is deprecated. The next version of "
+        "cryptography will remove support. Please upgrade to a 2.7.x "
+        "release that supports hmac.compare_digest as soon as possible.",
+        utils.DeprecatedIn23,
+    )
+
+    def bytes_eq(a, b):
+        if not isinstance(a, bytes) or not isinstance(b, bytes):
+            raise TypeError("a and b must be bytes.")
+
+        return lib.Cryptography_constant_time_bytes_eq(
+            a, len(a), b, len(b)
+        ) == 1

server/www/packages/packages-common/cryptography/hazmat/primitives/hashes.py

@@ -0,0 +1,185 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import HashBackend
+
+
+@six.add_metaclass(abc.ABCMeta)
+class HashAlgorithm(object):
+    @abc.abstractproperty
+    def name(self):
+        """
+        A string naming this algorithm (e.g. "sha256", "md5").
+        """
+
+    @abc.abstractproperty
+    def digest_size(self):
+        """
+        The size of the resulting digest in bytes.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class HashContext(object):
+    @abc.abstractproperty
+    def algorithm(self):
+        """
+        A HashAlgorithm that will be used by this context.
+        """
+
+    @abc.abstractmethod
+    def update(self, data):
+        """
+        Processes the provided bytes through the hash.
+        """
+
+    @abc.abstractmethod
+    def finalize(self):
+        """
+        Finalizes the hash context and returns the hash digest as bytes.
+        """
+
+    @abc.abstractmethod
+    def copy(self):
+        """
+        Return a HashContext that is a copy of the current context.
+        """
+
+
+@utils.register_interface(HashContext)
+class Hash(object):
+    def __init__(self, algorithm, backend, ctx=None):
+        if not isinstance(backend, HashBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HashBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        if not isinstance(algorithm, HashAlgorithm):
+            raise TypeError("Expected instance of hashes.HashAlgorithm.")
+        self._algorithm = algorithm
+
+        self._backend = backend
+
+        if ctx is None:
+            self._ctx = self._backend.create_hash_ctx(self.algorithm)
+        else:
+            self._ctx = ctx
+
+    algorithm = utils.read_only_property("_algorithm")
+
+    def update(self, data):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        if not isinstance(data, bytes):
+            raise TypeError("data must be bytes.")
+        self._ctx.update(data)
+
+    def copy(self):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        return Hash(
+            self.algorithm, backend=self._backend, ctx=self._ctx.copy()
+        )
+
+    def finalize(self):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        digest = self._ctx.finalize()
+        self._ctx = None
+        return digest
+
+
+@utils.register_interface(HashAlgorithm)
+class SHA1(object):
+    name = "sha1"
+    digest_size = 20
+    block_size = 64
+
+
+@utils.register_interface(HashAlgorithm)
+class SHA224(object):
+    name = "sha224"
+    digest_size = 28
+    block_size = 64
+
+
+@utils.register_interface(HashAlgorithm)
+class SHA256(object):
+    name = "sha256"
+    digest_size = 32
+    block_size = 64
+
+
+@utils.register_interface(HashAlgorithm)
+class SHA384(object):
+    name = "sha384"
+    digest_size = 48
+    block_size = 128
+
+
+@utils.register_interface(HashAlgorithm)
+class SHA512(object):
+    name = "sha512"
+    digest_size = 64
+    block_size = 128
+
+
+@utils.register_interface(HashAlgorithm)
+class MD5(object):
+    name = "md5"
+    digest_size = 16
+    block_size = 64
+
+
+@utils.register_interface(HashAlgorithm)
+class BLAKE2b(object):
+    name = "blake2b"
+    _max_digest_size = 64
+    _min_digest_size = 1
+    block_size = 128
+
+    def __init__(self, digest_size):
+        if (
+            digest_size > self._max_digest_size or
+            digest_size < self._min_digest_size
+        ):
+            raise ValueError("Digest size must be {0}-{1}".format(
+                self._min_digest_size, self._max_digest_size)
+            )
+
+        self._digest_size = digest_size
+
+    digest_size = utils.read_only_property("_digest_size")
+
+
+@utils.register_interface(HashAlgorithm)
+class BLAKE2s(object):
+    name = "blake2s"
+    block_size = 64
+    _max_digest_size = 32
+    _min_digest_size = 1
+
+    def __init__(self, digest_size):
+        if (
+            digest_size > self._max_digest_size or
+            digest_size < self._min_digest_size
+        ):
+            raise ValueError("Digest size must be {0}-{1}".format(
+                self._min_digest_size, self._max_digest_size)
+            )
+
+        self._digest_size = digest_size
+
+    digest_size = utils.read_only_property("_digest_size")

server/www/packages/packages-common/cryptography/hazmat/primitives/hmac.py

@@ -0,0 +1,69 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import HMACBackend
+from cryptography.hazmat.primitives import hashes, mac
+
+
+@utils.register_interface(mac.MACContext)
+@utils.register_interface(hashes.HashContext)
+class HMAC(object):
+    def __init__(self, key, algorithm, backend, ctx=None):
+        if not isinstance(backend, HMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        if not isinstance(algorithm, hashes.HashAlgorithm):
+            raise TypeError("Expected instance of hashes.HashAlgorithm.")
+        self._algorithm = algorithm
+
+        self._backend = backend
+        self._key = key
+        if ctx is None:
+            self._ctx = self._backend.create_hmac_ctx(key, self.algorithm)
+        else:
+            self._ctx = ctx
+
+    algorithm = utils.read_only_property("_algorithm")
+
+    def update(self, data):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        if not isinstance(data, bytes):
+            raise TypeError("data must be bytes.")
+        self._ctx.update(data)
+
+    def copy(self):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        return HMAC(
+            self._key,
+            self.algorithm,
+            backend=self._backend,
+            ctx=self._ctx.copy()
+        )
+
+    def finalize(self):
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+        digest = self._ctx.finalize()
+        self._ctx = None
+        return digest
+
+    def verify(self, signature):
+        if not isinstance(signature, bytes):
+            raise TypeError("signature must be bytes.")
+        if self._ctx is None:
+            raise AlreadyFinalized("Context was already finalized.")
+
+        ctx, self._ctx = self._ctx, None
+        ctx.verify(signature)

server/www/packages/packages-common/cryptography/hazmat/primitives/kdf/__init__.py

@@ -0,0 +1,26 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+
+@six.add_metaclass(abc.ABCMeta)
+class KeyDerivationFunction(object):
+    @abc.abstractmethod
+    def derive(self, key_material):
+        """
+        Deterministically generates and returns a new key based on the existing
+        key material.
+        """
+
+    @abc.abstractmethod
+    def verify(self, key_material, expected_key):
+        """
+        Checks whether the key generated by the key material matches the
+        expected derived key. Raises an exception if they do not match.
+        """

server/www/packages/packages-common/cryptography/hazmat/primitives/kdf/concatkdf.py

@@ -0,0 +1,125 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import struct
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, InvalidKey, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import HMACBackend
+from cryptography.hazmat.backends.interfaces import HashBackend
+from cryptography.hazmat.primitives import constant_time, hashes, hmac
+from cryptography.hazmat.primitives.kdf import KeyDerivationFunction
+
+
+def _int_to_u32be(n):
+    return struct.pack('>I', n)
+
+
+def _common_args_checks(algorithm, length, otherinfo):
+    max_length = algorithm.digest_size * (2 ** 32 - 1)
+    if length > max_length:
+        raise ValueError(
+            "Can not derive keys larger than {0} bits.".format(
+                max_length
+            ))
+    if not (otherinfo is None or isinstance(otherinfo, bytes)):
+        raise TypeError("otherinfo must be bytes.")
+
+
+def _concatkdf_derive(key_material, length, auxfn, otherinfo):
+    if not isinstance(key_material, bytes):
+        raise TypeError("key_material must be bytes.")
+
+    output = [b""]
+    outlen = 0
+    counter = 1
+
+    while (length > outlen):
+        h = auxfn()
+        h.update(_int_to_u32be(counter))
+        h.update(key_material)
+        h.update(otherinfo)
+        output.append(h.finalize())
+        outlen += len(output[-1])
+        counter += 1
+
+    return b"".join(output)[:length]
+
+
+@utils.register_interface(KeyDerivationFunction)
+class ConcatKDFHash(object):
+    def __init__(self, algorithm, length, otherinfo, backend):
+
+        _common_args_checks(algorithm, length, otherinfo)
+        self._algorithm = algorithm
+        self._length = length
+        self._otherinfo = otherinfo
+        if self._otherinfo is None:
+            self._otherinfo = b""
+
+        if not isinstance(backend, HashBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HashBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+        self._backend = backend
+        self._used = False
+
+    def _hash(self):
+        return hashes.Hash(self._algorithm, self._backend)
+
+    def derive(self, key_material):
+        if self._used:
+            raise AlreadyFinalized
+        self._used = True
+        return _concatkdf_derive(key_material, self._length,
+                                 self._hash, self._otherinfo)
+
+    def verify(self, key_material, expected_key):
+        if not constant_time.bytes_eq(self.derive(key_material), expected_key):
+            raise InvalidKey
+
+
+@utils.register_interface(KeyDerivationFunction)
+class ConcatKDFHMAC(object):
+    def __init__(self, algorithm, length, salt, otherinfo, backend):
+
+        _common_args_checks(algorithm, length, otherinfo)
+        self._algorithm = algorithm
+        self._length = length
+        self._otherinfo = otherinfo
+        if self._otherinfo is None:
+            self._otherinfo = b""
+
+        if not (salt is None or isinstance(salt, bytes)):
+            raise TypeError("salt must be bytes.")
+        if salt is None:
+            salt = b"\x00" * algorithm.block_size
+        self._salt = salt
+
+        if not isinstance(backend, HMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+        self._backend = backend
+        self._used = False
+
+    def _hmac(self):
+        return hmac.HMAC(self._salt, self._algorithm, self._backend)
+
+    def derive(self, key_material):
+        if self._used:
+            raise AlreadyFinalized
+        self._used = True
+        return _concatkdf_derive(key_material, self._length,
+                                 self._hmac, self._otherinfo)
+
+    def verify(self, key_material, expected_key):
+        if not constant_time.bytes_eq(self.derive(key_material), expected_key):
+            raise InvalidKey

server/www/packages/packages-common/cryptography/hazmat/primitives/kdf/hkdf.py

@@ -0,0 +1,116 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import six
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, InvalidKey, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import HMACBackend
+from cryptography.hazmat.primitives import constant_time, hmac
+from cryptography.hazmat.primitives.kdf import KeyDerivationFunction
+
+
+@utils.register_interface(KeyDerivationFunction)
+class HKDF(object):
+    def __init__(self, algorithm, length, salt, info, backend):
+        if not isinstance(backend, HMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        self._algorithm = algorithm
+
+        if not (salt is None or isinstance(salt, bytes)):
+            raise TypeError("salt must be bytes.")
+
+        if salt is None:
+            salt = b"\x00" * self._algorithm.digest_size
+
+        self._salt = salt
+
+        self._backend = backend
+
+        self._hkdf_expand = HKDFExpand(self._algorithm, length, info, backend)
+
+    def _extract(self, key_material):
+        h = hmac.HMAC(self._salt, self._algorithm, backend=self._backend)
+        h.update(key_material)
+        return h.finalize()
+
+    def derive(self, key_material):
+        if not isinstance(key_material, bytes):
+            raise TypeError("key_material must be bytes.")
+
+        return self._hkdf_expand.derive(self._extract(key_material))
+
+    def verify(self, key_material, expected_key):
+        if not constant_time.bytes_eq(self.derive(key_material), expected_key):
+            raise InvalidKey
+
+
+@utils.register_interface(KeyDerivationFunction)
+class HKDFExpand(object):
+    def __init__(self, algorithm, length, info, backend):
+        if not isinstance(backend, HMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        self._algorithm = algorithm
+
+        self._backend = backend
+
+        max_length = 255 * algorithm.digest_size
+
+        if length > max_length:
+            raise ValueError(
+                "Can not derive keys larger than {0} octets.".format(
+                    max_length
+                ))
+
+        self._length = length
+
+        if not (info is None or isinstance(info, bytes)):
+            raise TypeError("info must be bytes.")
+
+        if info is None:
+            info = b""
+
+        self._info = info
+
+        self._used = False
+
+    def _expand(self, key_material):
+        output = [b""]
+        counter = 1
+
+        while self._algorithm.digest_size * (len(output) - 1) < self._length:
+            h = hmac.HMAC(key_material, self._algorithm, backend=self._backend)
+            h.update(output[-1])
+            h.update(self._info)
+            h.update(six.int2byte(counter))
+            output.append(h.finalize())
+            counter += 1
+
+        return b"".join(output)[:self._length]
+
+    def derive(self, key_material):
+        if not isinstance(key_material, bytes):
+            raise TypeError("key_material must be bytes.")
+
+        if self._used:
+            raise AlreadyFinalized
+
+        self._used = True
+        return self._expand(key_material)
+
+    def verify(self, key_material, expected_key):
+        if not constant_time.bytes_eq(self.derive(key_material), expected_key):
+            raise InvalidKey

server/www/packages/packages-common/cryptography/hazmat/primitives/kdf/kbkdf.py

@@ -0,0 +1,148 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from enum import Enum
+
+from six.moves import range
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, InvalidKey, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import HMACBackend
+from cryptography.hazmat.primitives import constant_time, hashes, hmac
+from cryptography.hazmat.primitives.kdf import KeyDerivationFunction
+
+
+class Mode(Enum):
+    CounterMode = "ctr"
+
+
+class CounterLocation(Enum):
+    BeforeFixed = "before_fixed"
+    AfterFixed = "after_fixed"
+
+
+@utils.register_interface(KeyDerivationFunction)
+class KBKDFHMAC(object):
+    def __init__(self, algorithm, mode, length, rlen, llen,
+                 location, label, context, fixed, backend):
+        if not isinstance(backend, HMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        if not isinstance(algorithm, hashes.HashAlgorithm):
+            raise UnsupportedAlgorithm(
+                "Algorithm supplied is not a supported hash algorithm.",
+                _Reasons.UNSUPPORTED_HASH
+            )
+
+        if not backend.hmac_supported(algorithm):
+            raise UnsupportedAlgorithm(
+                "Algorithm supplied is not a supported hmac algorithm.",
+                _Reasons.UNSUPPORTED_HASH
+            )
+
+        if not isinstance(mode, Mode):
+            raise TypeError("mode must be of type Mode")
+
+        if not isinstance(location, CounterLocation):
+            raise TypeError("location must be of type CounterLocation")
+
+        if (label or context) and fixed:
+            raise ValueError("When supplying fixed data, "
+                             "label and context are ignored.")
+
+        if rlen is None or not self._valid_byte_length(rlen):
+            raise ValueError("rlen must be between 1 and 4")
+
+        if llen is None and fixed is None:
+            raise ValueError("Please specify an llen")
+
+        if llen is not None and not isinstance(llen, int):
+            raise TypeError("llen must be an integer")
+
+        if label is None:
+            label = b''
+
+        if context is None:
+            context = b''
+
+        if (not isinstance(label, bytes) or
+                not isinstance(context, bytes)):
+            raise TypeError('label and context must be of type bytes')
+
+        self._algorithm = algorithm
+        self._mode = mode
+        self._length = length
+        self._rlen = rlen
+        self._llen = llen
+        self._location = location
+        self._label = label
+        self._context = context
+        self._backend = backend
+        self._used = False
+        self._fixed_data = fixed
+
+    def _valid_byte_length(self, value):
+        if not isinstance(value, int):
+            raise TypeError('value must be of type int')
+
+        value_bin = utils.int_to_bytes(1, value)
+        if not 1 <= len(value_bin) <= 4:
+            return False
+        return True
+
+    def derive(self, key_material):
+        if self._used:
+            raise AlreadyFinalized
+
+        if not isinstance(key_material, bytes):
+            raise TypeError('key_material must be bytes')
+        self._used = True
+
+        # inverse floor division (equivalent to ceiling)
+        rounds = -(-self._length // self._algorithm.digest_size)
+
+        output = [b'']
+
+        # For counter mode, the number of iterations shall not be
+        # larger than 2^r-1, where r <= 32 is the binary length of the counter
+        # This ensures that the counter values used as an input to the
+        # PRF will not repeat during a particular call to the KDF function.
+        r_bin = utils.int_to_bytes(1, self._rlen)
+        if rounds > pow(2, len(r_bin) * 8) - 1:
+            raise ValueError('There are too many iterations.')
+
+        for i in range(1, rounds + 1):
+            h = hmac.HMAC(key_material, self._algorithm, backend=self._backend)
+
+            counter = utils.int_to_bytes(i, self._rlen)
+            if self._location == CounterLocation.BeforeFixed:
+                h.update(counter)
+
+            h.update(self._generate_fixed_input())
+
+            if self._location == CounterLocation.AfterFixed:
+                h.update(counter)
+
+            output.append(h.finalize())
+
+        return b''.join(output)[:self._length]
+
+    def _generate_fixed_input(self):
+        if self._fixed_data and isinstance(self._fixed_data, bytes):
+            return self._fixed_data
+
+        l_val = utils.int_to_bytes(self._length * 8, self._llen)
+
+        return b"".join([self._label, b"\x00", self._context, l_val])
+
+    def verify(self, key_material, expected_key):
+        if not constant_time.bytes_eq(self.derive(key_material), expected_key):
+            raise InvalidKey

server/www/packages/packages-common/cryptography/hazmat/primitives/kdf/pbkdf2.py

@@ -0,0 +1,58 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, InvalidKey, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import PBKDF2HMACBackend
+from cryptography.hazmat.primitives import constant_time
+from cryptography.hazmat.primitives.kdf import KeyDerivationFunction
+
+
+@utils.register_interface(KeyDerivationFunction)
+class PBKDF2HMAC(object):
+    def __init__(self, algorithm, length, salt, iterations, backend):
+        if not isinstance(backend, PBKDF2HMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement PBKDF2HMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        if not backend.pbkdf2_hmac_supported(algorithm):
+            raise UnsupportedAlgorithm(
+                "{0} is not supported for PBKDF2 by this backend.".format(
+                    algorithm.name),
+                _Reasons.UNSUPPORTED_HASH
+            )
+        self._used = False
+        self._algorithm = algorithm
+        self._length = length
+        if not isinstance(salt, bytes):
+            raise TypeError("salt must be bytes.")
+        self._salt = salt
+        self._iterations = iterations
+        self._backend = backend
+
+    def derive(self, key_material):
+        if self._used:
+            raise AlreadyFinalized("PBKDF2 instances can only be used once.")
+        self._used = True
+
+        if not isinstance(key_material, bytes):
+            raise TypeError("key_material must be bytes.")
+        return self._backend.derive_pbkdf2_hmac(
+            self._algorithm,
+            self._length,
+            self._salt,
+            self._iterations,
+            key_material
+        )
+
+    def verify(self, key_material, expected_key):
+        derived_key = self.derive(key_material)
+        if not constant_time.bytes_eq(derived_key, expected_key):
+            raise InvalidKey("Keys do not match.")

server/www/packages/packages-common/cryptography/hazmat/primitives/kdf/scrypt.py

@@ -0,0 +1,66 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import sys
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, InvalidKey, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import ScryptBackend
+from cryptography.hazmat.primitives import constant_time
+from cryptography.hazmat.primitives.kdf import KeyDerivationFunction
+
+
+# This is used by the scrypt tests to skip tests that require more memory
+# than the MEM_LIMIT
+_MEM_LIMIT = sys.maxsize // 2
+
+
+@utils.register_interface(KeyDerivationFunction)
+class Scrypt(object):
+    def __init__(self, salt, length, n, r, p, backend):
+        if not isinstance(backend, ScryptBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement ScryptBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        self._length = length
+        if not isinstance(salt, bytes):
+            raise TypeError("salt must be bytes.")
+
+        if n < 2 or (n & (n - 1)) != 0:
+            raise ValueError("n must be greater than 1 and be a power of 2.")
+
+        if r < 1:
+            raise ValueError("r must be greater than or equal to 1.")
+
+        if p < 1:
+            raise ValueError("p must be greater than or equal to 1.")
+
+        self._used = False
+        self._salt = salt
+        self._n = n
+        self._r = r
+        self._p = p
+        self._backend = backend
+
+    def derive(self, key_material):
+        if self._used:
+            raise AlreadyFinalized("Scrypt instances can only be used once.")
+        self._used = True
+
+        if not isinstance(key_material, bytes):
+            raise TypeError("key_material must be bytes.")
+        return self._backend.derive_scrypt(
+            key_material, self._salt, self._length, self._n, self._r, self._p
+        )
+
+    def verify(self, key_material, expected_key):
+        derived_key = self.derive(key_material)
+        if not constant_time.bytes_eq(derived_key, expected_key):
+            raise InvalidKey("Keys do not match.")

server/www/packages/packages-common/cryptography/hazmat/primitives/kdf/x963kdf.py

@@ -0,0 +1,70 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import struct
+
+from cryptography import utils
+from cryptography.exceptions import (
+    AlreadyFinalized, InvalidKey, UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import HashBackend
+from cryptography.hazmat.primitives import constant_time, hashes
+from cryptography.hazmat.primitives.kdf import KeyDerivationFunction
+
+
+def _int_to_u32be(n):
+    return struct.pack('>I', n)
+
+
+@utils.register_interface(KeyDerivationFunction)
+class X963KDF(object):
+    def __init__(self, algorithm, length, sharedinfo, backend):
+
+        max_len = algorithm.digest_size * (2 ** 32 - 1)
+        if length > max_len:
+            raise ValueError(
+                "Can not derive keys larger than {0} bits.".format(max_len))
+        if not (sharedinfo is None or isinstance(sharedinfo, bytes)):
+            raise TypeError("sharedinfo must be bytes.")
+        self._algorithm = algorithm
+        self._length = length
+        self._sharedinfo = sharedinfo
+
+        if not isinstance(backend, HashBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HashBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+        self._backend = backend
+        self._used = False
+
+    def derive(self, key_material):
+        if self._used:
+            raise AlreadyFinalized
+        self._used = True
+
+        if not isinstance(key_material, bytes):
+            raise TypeError("key_material must be bytes.")
+
+        output = [b""]
+        outlen = 0
+        counter = 1
+
+        while self._length > outlen:
+            h = hashes.Hash(self._algorithm, self._backend)
+            h.update(key_material)
+            h.update(_int_to_u32be(counter))
+            if self._sharedinfo is not None:
+                h.update(self._sharedinfo)
+            output.append(h.finalize())
+            outlen += len(output[-1])
+            counter += 1
+
+        return b"".join(output)[:self._length]
+
+    def verify(self, key_material, expected_key):
+        if not constant_time.bytes_eq(self.derive(key_material), expected_key):
+            raise InvalidKey

server/www/packages/packages-common/cryptography/hazmat/primitives/keywrap.py

@@ -0,0 +1,154 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import struct
+
+from cryptography.hazmat.primitives.ciphers import Cipher
+from cryptography.hazmat.primitives.ciphers.algorithms import AES
+from cryptography.hazmat.primitives.ciphers.modes import ECB
+from cryptography.hazmat.primitives.constant_time import bytes_eq
+
+
+def _wrap_core(wrapping_key, a, r, backend):
+    # RFC 3394 Key Wrap - 2.2.1 (index method)
+    encryptor = Cipher(AES(wrapping_key), ECB(), backend).encryptor()
+    n = len(r)
+    for j in range(6):
+        for i in range(n):
+            # every encryption operation is a discrete 16 byte chunk (because
+            # AES has a 128-bit block size) and since we're using ECB it is
+            # safe to reuse the encryptor for the entire operation
+            b = encryptor.update(a + r[i])
+            # pack/unpack are safe as these are always 64-bit chunks
+            a = struct.pack(
+                ">Q", struct.unpack(">Q", b[:8])[0] ^ ((n * j) + i + 1)
+            )
+            r[i] = b[-8:]
+
+    assert encryptor.finalize() == b""
+
+    return a + b"".join(r)
+
+
+def aes_key_wrap(wrapping_key, key_to_wrap, backend):
+    if len(wrapping_key) not in [16, 24, 32]:
+        raise ValueError("The wrapping key must be a valid AES key length")
+
+    if len(key_to_wrap) < 16:
+        raise ValueError("The key to wrap must be at least 16 bytes")
+
+    if len(key_to_wrap) % 8 != 0:
+        raise ValueError("The key to wrap must be a multiple of 8 bytes")
+
+    a = b"\xa6\xa6\xa6\xa6\xa6\xa6\xa6\xa6"
+    r = [key_to_wrap[i:i + 8] for i in range(0, len(key_to_wrap), 8)]
+    return _wrap_core(wrapping_key, a, r, backend)
+
+
+def _unwrap_core(wrapping_key, a, r, backend):
+    # Implement RFC 3394 Key Unwrap - 2.2.2 (index method)
+    decryptor = Cipher(AES(wrapping_key), ECB(), backend).decryptor()
+    n = len(r)
+    for j in reversed(range(6)):
+        for i in reversed(range(n)):
+            # pack/unpack are safe as these are always 64-bit chunks
+            atr = struct.pack(
+                ">Q", struct.unpack(">Q", a)[0] ^ ((n * j) + i + 1)
+            ) + r[i]
+            # every decryption operation is a discrete 16 byte chunk so
+            # it is safe to reuse the decryptor for the entire operation
+            b = decryptor.update(atr)
+            a = b[:8]
+            r[i] = b[-8:]
+
+    assert decryptor.finalize() == b""
+    return a, r
+
+
+def aes_key_wrap_with_padding(wrapping_key, key_to_wrap, backend):
+    if len(wrapping_key) not in [16, 24, 32]:
+        raise ValueError("The wrapping key must be a valid AES key length")
+
+    aiv = b"\xA6\x59\x59\xA6" + struct.pack(">i", len(key_to_wrap))
+    # pad the key to wrap if necessary
+    pad = (8 - (len(key_to_wrap) % 8)) % 8
+    key_to_wrap = key_to_wrap + b"\x00" * pad
+    if len(key_to_wrap) == 8:
+        # RFC 5649 - 4.1 - exactly 8 octets after padding
+        encryptor = Cipher(AES(wrapping_key), ECB(), backend).encryptor()
+        b = encryptor.update(aiv + key_to_wrap)
+        assert encryptor.finalize() == b""
+        return b
+    else:
+        r = [key_to_wrap[i:i + 8] for i in range(0, len(key_to_wrap), 8)]
+        return _wrap_core(wrapping_key, aiv, r, backend)
+
+
+def aes_key_unwrap_with_padding(wrapping_key, wrapped_key, backend):
+    if len(wrapped_key) < 16:
+        raise InvalidUnwrap("Must be at least 16 bytes")
+
+    if len(wrapping_key) not in [16, 24, 32]:
+        raise ValueError("The wrapping key must be a valid AES key length")
+
+    if len(wrapped_key) == 16:
+        # RFC 5649 - 4.2 - exactly two 64-bit blocks
+        decryptor = Cipher(AES(wrapping_key), ECB(), backend).decryptor()
+        b = decryptor.update(wrapped_key)
+        assert decryptor.finalize() == b""
+        a = b[:8]
+        data = b[8:]
+        n = 1
+    else:
+        r = [wrapped_key[i:i + 8] for i in range(0, len(wrapped_key), 8)]
+        encrypted_aiv = r.pop(0)
+        n = len(r)
+        a, r = _unwrap_core(wrapping_key, encrypted_aiv, r, backend)
+        data = b"".join(r)
+
+    # 1) Check that MSB(32,A) = A65959A6.
+    # 2) Check that 8*(n-1) < LSB(32,A) <= 8*n.  If so, let
+    #    MLI = LSB(32,A).
+    # 3) Let b = (8*n)-MLI, and then check that the rightmost b octets of
+    #    the output data are zero.
+    (mli,) = struct.unpack(">I", a[4:])
+    b = (8 * n) - mli
+    if (
+        not bytes_eq(a[:4], b"\xa6\x59\x59\xa6") or not
+        8 * (n - 1) < mli <= 8 * n or (
+            b != 0 and not bytes_eq(data[-b:], b"\x00" * b)
+        )
+    ):
+        raise InvalidUnwrap()
+
+    if b == 0:
+        return data
+    else:
+        return data[:-b]
+
+
+def aes_key_unwrap(wrapping_key, wrapped_key, backend):
+    if len(wrapped_key) < 24:
+        raise InvalidUnwrap("Must be at least 24 bytes")
+
+    if len(wrapped_key) % 8 != 0:
+        raise InvalidUnwrap("The wrapped key must be a multiple of 8 bytes")
+
+    if len(wrapping_key) not in [16, 24, 32]:
+        raise ValueError("The wrapping key must be a valid AES key length")
+
+    aiv = b"\xa6\xa6\xa6\xa6\xa6\xa6\xa6\xa6"
+    r = [wrapped_key[i:i + 8] for i in range(0, len(wrapped_key), 8)]
+    a = r.pop(0)
+    a, r = _unwrap_core(wrapping_key, a, r, backend)
+    if not bytes_eq(a, aiv):
+        raise InvalidUnwrap()
+
+    return b"".join(r)
+
+
+class InvalidUnwrap(Exception):
+    pass

server/www/packages/packages-common/cryptography/hazmat/primitives/mac.py

@@ -0,0 +1,37 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+
+@six.add_metaclass(abc.ABCMeta)
+class MACContext(object):
+    @abc.abstractmethod
+    def update(self, data):
+        """
+        Processes the provided bytes.
+        """
+
+    @abc.abstractmethod
+    def finalize(self):
+        """
+        Returns the message authentication code as bytes.
+        """
+
+    @abc.abstractmethod
+    def copy(self):
+        """
+        Return a MACContext that is a copy of the current context.
+        """
+
+    @abc.abstractmethod
+    def verify(self, signature):
+        """
+        Checks if the generated message authentication code matches the
+        signature.
+        """

server/www/packages/packages-common/cryptography/hazmat/primitives/padding.py

@@ -0,0 +1,202 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+
+import six
+
+from cryptography import utils
+from cryptography.exceptions import AlreadyFinalized
+from cryptography.hazmat.bindings._padding import lib
+
+
+@six.add_metaclass(abc.ABCMeta)
+class PaddingContext(object):
+    @abc.abstractmethod
+    def update(self, data):
+        """
+        Pads the provided bytes and returns any available data as bytes.
+        """
+
+    @abc.abstractmethod
+    def finalize(self):
+        """
+        Finalize the padding, returns bytes.
+        """
+
+
+def _byte_padding_check(block_size):
+    if not (0 <= block_size <= 2040):
+        raise ValueError("block_size must be in range(0, 2041).")
+
+    if block_size % 8 != 0:
+        raise ValueError("block_size must be a multiple of 8.")
+
+
+def _byte_padding_update(buffer_, data, block_size):
+    if buffer_ is None:
+        raise AlreadyFinalized("Context was already finalized.")
+
+    if not isinstance(data, bytes):
+        raise TypeError("data must be bytes.")
+
+    buffer_ += data
+
+    finished_blocks = len(buffer_) // (block_size // 8)
+
+    result = buffer_[:finished_blocks * (block_size // 8)]
+    buffer_ = buffer_[finished_blocks * (block_size // 8):]
+
+    return buffer_, result
+
+
+def _byte_padding_pad(buffer_, block_size, paddingfn):
+    if buffer_ is None:
+        raise AlreadyFinalized("Context was already finalized.")
+
+    pad_size = block_size // 8 - len(buffer_)
+    return buffer_ + paddingfn(pad_size)
+
+
+def _byte_unpadding_update(buffer_, data, block_size):
+    if buffer_ is None:
+        raise AlreadyFinalized("Context was already finalized.")
+
+    if not isinstance(data, bytes):
+        raise TypeError("data must be bytes.")
+
+    buffer_ += data
+
+    finished_blocks = max(len(buffer_) // (block_size // 8) - 1, 0)
+
+    result = buffer_[:finished_blocks * (block_size // 8)]
+    buffer_ = buffer_[finished_blocks * (block_size // 8):]
+
+    return buffer_, result
+
+
+def _byte_unpadding_check(buffer_, block_size, checkfn):
+    if buffer_ is None:
+        raise AlreadyFinalized("Context was already finalized.")
+
+    if len(buffer_) != block_size // 8:
+        raise ValueError("Invalid padding bytes.")
+
+    valid = checkfn(buffer_, block_size // 8)
+
+    if not valid:
+        raise ValueError("Invalid padding bytes.")
+
+    pad_size = six.indexbytes(buffer_, -1)
+    return buffer_[:-pad_size]
+
+
+class PKCS7(object):
+    def __init__(self, block_size):
+        _byte_padding_check(block_size)
+        self.block_size = block_size
+
+    def padder(self):
+        return _PKCS7PaddingContext(self.block_size)
+
+    def unpadder(self):
+        return _PKCS7UnpaddingContext(self.block_size)
+
+
+@utils.register_interface(PaddingContext)
+class _PKCS7PaddingContext(object):
+    def __init__(self, block_size):
+        self.block_size = block_size
+        # TODO: more copies than necessary, we should use zero-buffer (#193)
+        self._buffer = b""
+
+    def update(self, data):
+        self._buffer, result = _byte_padding_update(
+            self._buffer, data, self.block_size)
+        return result
+
+    def _padding(self, size):
+        return six.int2byte(size) * size
+
+    def finalize(self):
+        result = _byte_padding_pad(
+            self._buffer, self.block_size, self._padding)
+        self._buffer = None
+        return result
+
+
+@utils.register_interface(PaddingContext)
+class _PKCS7UnpaddingContext(object):
+    def __init__(self, block_size):
+        self.block_size = block_size
+        # TODO: more copies than necessary, we should use zero-buffer (#193)
+        self._buffer = b""
+
+    def update(self, data):
+        self._buffer, result = _byte_unpadding_update(
+            self._buffer, data, self.block_size)
+        return result
+
+    def finalize(self):
+        result = _byte_unpadding_check(
+            self._buffer, self.block_size,
+            lib.Cryptography_check_pkcs7_padding)
+        self._buffer = None
+        return result
+
+
+class ANSIX923(object):
+    def __init__(self, block_size):
+        _byte_padding_check(block_size)
+        self.block_size = block_size
+
+    def padder(self):
+        return _ANSIX923PaddingContext(self.block_size)
+
+    def unpadder(self):
+        return _ANSIX923UnpaddingContext(self.block_size)
+
+
+@utils.register_interface(PaddingContext)
+class _ANSIX923PaddingContext(object):
+    def __init__(self, block_size):
+        self.block_size = block_size
+        # TODO: more copies than necessary, we should use zero-buffer (#193)
+        self._buffer = b""
+
+    def update(self, data):
+        self._buffer, result = _byte_padding_update(
+            self._buffer, data, self.block_size)
+        return result
+
+    def _padding(self, size):
+        return six.int2byte(0) * (size - 1) + six.int2byte(size)
+
+    def finalize(self):
+        result = _byte_padding_pad(
+            self._buffer, self.block_size, self._padding)
+        self._buffer = None
+        return result
+
+
+@utils.register_interface(PaddingContext)
+class _ANSIX923UnpaddingContext(object):
+    def __init__(self, block_size):
+        self.block_size = block_size
+        # TODO: more copies than necessary, we should use zero-buffer (#193)
+        self._buffer = b""
+
+    def update(self, data):
+        self._buffer, result = _byte_unpadding_update(
+            self._buffer, data, self.block_size)
+        return result
+
+    def finalize(self):
+        result = _byte_unpadding_check(
+            self._buffer, self.block_size,
+            lib.Cryptography_check_ansix923_padding)
+        self._buffer = None
+        return result

server/www/packages/packages-common/cryptography/hazmat/primitives/serialization.py

@@ -0,0 +1,209 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+import base64
+import struct
+from enum import Enum
+
+import six
+
+from cryptography import utils
+from cryptography.exceptions import UnsupportedAlgorithm
+from cryptography.hazmat.primitives.asymmetric import dsa, ec, rsa
+
+
+def load_pem_private_key(data, password, backend):
+    return backend.load_pem_private_key(data, password)
+
+
+def load_pem_public_key(data, backend):
+    return backend.load_pem_public_key(data)
+
+
+def load_pem_parameters(data, backend):
+    return backend.load_pem_parameters(data)
+
+
+def load_der_private_key(data, password, backend):
+    return backend.load_der_private_key(data, password)
+
+
+def load_der_public_key(data, backend):
+    return backend.load_der_public_key(data)
+
+
+def load_der_parameters(data, backend):
+    return backend.load_der_parameters(data)
+
+
+def load_ssh_public_key(data, backend):
+    key_parts = data.split(b' ', 2)
+
+    if len(key_parts) < 2:
+        raise ValueError(
+            'Key is not in the proper format or contains extra data.')
+
+    key_type = key_parts[0]
+
+    if key_type == b'ssh-rsa':
+        loader = _load_ssh_rsa_public_key
+    elif key_type == b'ssh-dss':
+        loader = _load_ssh_dss_public_key
+    elif key_type in [
+        b'ecdsa-sha2-nistp256', b'ecdsa-sha2-nistp384', b'ecdsa-sha2-nistp521',
+    ]:
+        loader = _load_ssh_ecdsa_public_key
+    else:
+        raise UnsupportedAlgorithm('Key type is not supported.')
+
+    key_body = key_parts[1]
+
+    try:
+        decoded_data = base64.b64decode(key_body)
+    except TypeError:
+        raise ValueError('Key is not in the proper format.')
+
+    inner_key_type, rest = _ssh_read_next_string(decoded_data)
+
+    if inner_key_type != key_type:
+        raise ValueError(
+            'Key header and key body contain different key type values.'
+        )
+
+    return loader(key_type, rest, backend)
+
+
+def _load_ssh_rsa_public_key(key_type, decoded_data, backend):
+    e, rest = _ssh_read_next_mpint(decoded_data)
+    n, rest = _ssh_read_next_mpint(rest)
+
+    if rest:
+        raise ValueError('Key body contains extra bytes.')
+
+    return rsa.RSAPublicNumbers(e, n).public_key(backend)
+
+
+def _load_ssh_dss_public_key(key_type, decoded_data, backend):
+    p, rest = _ssh_read_next_mpint(decoded_data)
+    q, rest = _ssh_read_next_mpint(rest)
+    g, rest = _ssh_read_next_mpint(rest)
+    y, rest = _ssh_read_next_mpint(rest)
+
+    if rest:
+        raise ValueError('Key body contains extra bytes.')
+
+    parameter_numbers = dsa.DSAParameterNumbers(p, q, g)
+    public_numbers = dsa.DSAPublicNumbers(y, parameter_numbers)
+
+    return public_numbers.public_key(backend)
+
+
+def _load_ssh_ecdsa_public_key(expected_key_type, decoded_data, backend):
+    curve_name, rest = _ssh_read_next_string(decoded_data)
+    data, rest = _ssh_read_next_string(rest)
+
+    if expected_key_type != b"ecdsa-sha2-" + curve_name:
+        raise ValueError(
+            'Key header and key body contain different key type values.'
+        )
+
+    if rest:
+        raise ValueError('Key body contains extra bytes.')
+
+    curve = {
+        b"nistp256": ec.SECP256R1,
+        b"nistp384": ec.SECP384R1,
+        b"nistp521": ec.SECP521R1,
+    }[curve_name]()
+
+    if six.indexbytes(data, 0) != 4:
+        raise NotImplementedError(
+            "Compressed elliptic curve points are not supported"
+        )
+
+    numbers = ec.EllipticCurvePublicNumbers.from_encoded_point(curve, data)
+    return numbers.public_key(backend)
+
+
+def _ssh_read_next_string(data):
+    """
+    Retrieves the next RFC 4251 string value from the data.
+
+    While the RFC calls these strings, in Python they are bytes objects.
+    """
+    if len(data) < 4:
+        raise ValueError("Key is not in the proper format")
+
+    str_len, = struct.unpack('>I', data[:4])
+    if len(data) < str_len + 4:
+        raise ValueError("Key is not in the proper format")
+
+    return data[4:4 + str_len], data[4 + str_len:]
+
+
+def _ssh_read_next_mpint(data):
+    """
+    Reads the next mpint from the data.
+
+    Currently, all mpints are interpreted as unsigned.
+    """
+    mpint_data, rest = _ssh_read_next_string(data)
+
+    return (
+        utils.int_from_bytes(mpint_data, byteorder='big', signed=False), rest
+    )
+
+
+def _ssh_write_string(data):
+    return struct.pack(">I", len(data)) + data
+
+
+def _ssh_write_mpint(value):
+    data = utils.int_to_bytes(value)
+    if six.indexbytes(data, 0) & 0x80:
+        data = b"\x00" + data
+    return _ssh_write_string(data)
+
+
+class Encoding(Enum):
+    PEM = "PEM"
+    DER = "DER"
+    OpenSSH = "OpenSSH"
+
+
+class PrivateFormat(Enum):
+    PKCS8 = "PKCS8"
+    TraditionalOpenSSL = "TraditionalOpenSSL"
+
+
+class PublicFormat(Enum):
+    SubjectPublicKeyInfo = "X.509 subjectPublicKeyInfo with PKCS#1"
+    PKCS1 = "Raw PKCS#1"
+    OpenSSH = "OpenSSH"
+
+
+class ParameterFormat(Enum):
+    PKCS3 = "PKCS3"
+
+
+@six.add_metaclass(abc.ABCMeta)
+class KeySerializationEncryption(object):
+    pass
+
+
+@utils.register_interface(KeySerializationEncryption)
+class BestAvailableEncryption(object):
+    def __init__(self, password):
+        if not isinstance(password, bytes) or len(password) == 0:
+            raise ValueError("Password must be 1 or more bytes.")
+
+        self.password = password
+
+
+@utils.register_interface(KeySerializationEncryption)
+class NoEncryption(object):
+    pass

server/www/packages/packages-common/cryptography/hazmat/primitives/twofactor/__init__.py

@@ -0,0 +1,9 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+
+class InvalidToken(Exception):
+    pass

server/www/packages/packages-common/cryptography/hazmat/primitives/twofactor/hotp.py

@@ -0,0 +1,68 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import struct
+
+import six
+
+from cryptography.exceptions import (
+    UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import HMACBackend
+from cryptography.hazmat.primitives import constant_time, hmac
+from cryptography.hazmat.primitives.hashes import SHA1, SHA256, SHA512
+from cryptography.hazmat.primitives.twofactor import InvalidToken
+from cryptography.hazmat.primitives.twofactor.utils import _generate_uri
+
+
+class HOTP(object):
+    def __init__(self, key, length, algorithm, backend,
+                 enforce_key_length=True):
+        if not isinstance(backend, HMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        if len(key) < 16 and enforce_key_length is True:
+            raise ValueError("Key length has to be at least 128 bits.")
+
+        if not isinstance(length, six.integer_types):
+            raise TypeError("Length parameter must be an integer type.")
+
+        if length < 6 or length > 8:
+            raise ValueError("Length of HOTP has to be between 6 to 8.")
+
+        if not isinstance(algorithm, (SHA1, SHA256, SHA512)):
+            raise TypeError("Algorithm must be SHA1, SHA256 or SHA512.")
+
+        self._key = key
+        self._length = length
+        self._algorithm = algorithm
+        self._backend = backend
+
+    def generate(self, counter):
+        truncated_value = self._dynamic_truncate(counter)
+        hotp = truncated_value % (10 ** self._length)
+        return "{0:0{1}}".format(hotp, self._length).encode()
+
+    def verify(self, hotp, counter):
+        if not constant_time.bytes_eq(self.generate(counter), hotp):
+            raise InvalidToken("Supplied HOTP value does not match.")
+
+    def _dynamic_truncate(self, counter):
+        ctx = hmac.HMAC(self._key, self._algorithm, self._backend)
+        ctx.update(struct.pack(">Q", counter))
+        hmac_value = ctx.finalize()
+
+        offset = six.indexbytes(hmac_value, len(hmac_value) - 1) & 0b1111
+        p = hmac_value[offset:offset + 4]
+        return struct.unpack(">I", p)[0] & 0x7fffffff
+
+    def get_provisioning_uri(self, account_name, counter, issuer):
+        return _generate_uri(self, "hotp", account_name, issuer, [
+            ("counter", int(counter)),
+        ])

server/www/packages/packages-common/cryptography/hazmat/primitives/twofactor/totp.py

@@ -0,0 +1,40 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography.exceptions import (
+    UnsupportedAlgorithm, _Reasons
+)
+from cryptography.hazmat.backends.interfaces import HMACBackend
+from cryptography.hazmat.primitives import constant_time
+from cryptography.hazmat.primitives.twofactor import InvalidToken
+from cryptography.hazmat.primitives.twofactor.hotp import HOTP
+from cryptography.hazmat.primitives.twofactor.utils import _generate_uri
+
+
+class TOTP(object):
+    def __init__(self, key, length, algorithm, time_step, backend,
+                 enforce_key_length=True):
+        if not isinstance(backend, HMACBackend):
+            raise UnsupportedAlgorithm(
+                "Backend object does not implement HMACBackend.",
+                _Reasons.BACKEND_MISSING_INTERFACE
+            )
+
+        self._time_step = time_step
+        self._hotp = HOTP(key, length, algorithm, backend, enforce_key_length)
+
+    def generate(self, time):
+        counter = int(time / self._time_step)
+        return self._hotp.generate(counter)
+
+    def verify(self, totp, time):
+        if not constant_time.bytes_eq(self.generate(time), totp):
+            raise InvalidToken("Supplied TOTP value does not match.")
+
+    def get_provisioning_uri(self, account_name, issuer):
+        return _generate_uri(self._hotp, "totp", account_name, issuer, [
+            ("period", int(self._time_step)),
+        ])

server/www/packages/packages-common/cryptography/hazmat/primitives/twofactor/utils.py

@@ -0,0 +1,30 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import base64
+
+from six.moves.urllib.parse import quote, urlencode
+
+
+def _generate_uri(hotp, type_name, account_name, issuer, extra_parameters):
+    parameters = [
+        ("digits", hotp._length),
+        ("secret", base64.b32encode(hotp._key)),
+        ("algorithm", hotp._algorithm.name.upper()),
+    ]
+
+    if issuer is not None:
+        parameters.append(("issuer", issuer))
+
+    parameters.extend(extra_parameters)
+
+    uriparts = {
+        "type": type_name,
+        "label": ("%s:%s" % (quote(issuer), quote(account_name)) if issuer
+                  else quote(account_name)),
+        "parameters": urlencode(parameters),
+    }
+    return "otpauth://{type}/{label}?{parameters}".format(**uriparts)

server/www/packages/packages-common/cryptography/utils.py

@@ -0,0 +1,165 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+import binascii
+import inspect
+import sys
+import warnings
+
+
+# We use a UserWarning subclass, instead of DeprecationWarning, because CPython
+# decided deprecation warnings should be invisble by default.
+class CryptographyDeprecationWarning(UserWarning):
+    pass
+
+
+# Several APIs were deprecated with no specific end-of-life date because of the
+# ubiquity of their use. They should not be removed until we agree on when that
+# cycle ends.
+PersistentlyDeprecated = CryptographyDeprecationWarning
+DeprecatedIn21 = CryptographyDeprecationWarning
+DeprecatedIn23 = CryptographyDeprecationWarning
+
+
+def _check_bytes(name, value):
+    if not isinstance(value, bytes):
+        raise TypeError("{0} must be bytes".format(name))
+
+
+def read_only_property(name):
+    return property(lambda self: getattr(self, name))
+
+
+def register_interface(iface):
+    def register_decorator(klass):
+        verify_interface(iface, klass)
+        iface.register(klass)
+        return klass
+    return register_decorator
+
+
+def register_interface_if(predicate, iface):
+    def register_decorator(klass):
+        if predicate:
+            verify_interface(iface, klass)
+            iface.register(klass)
+        return klass
+    return register_decorator
+
+
+if hasattr(int, "from_bytes"):
+    int_from_bytes = int.from_bytes
+else:
+    def int_from_bytes(data, byteorder, signed=False):
+        assert byteorder == 'big'
+        assert not signed
+
+        return int(binascii.hexlify(data), 16)
+
+
+if hasattr(int, "to_bytes"):
+    def int_to_bytes(integer, length=None):
+        return integer.to_bytes(
+            length or (integer.bit_length() + 7) // 8 or 1, 'big'
+        )
+else:
+    def int_to_bytes(integer, length=None):
+        hex_string = '%x' % integer
+        if length is None:
+            n = len(hex_string)
+        else:
+            n = length * 2
+        return binascii.unhexlify(hex_string.zfill(n + (n & 1)))
+
+
+class InterfaceNotImplemented(Exception):
+    pass
+
+
+if hasattr(inspect, "signature"):
+    signature = inspect.signature
+else:
+    signature = inspect.getargspec
+
+
+def verify_interface(iface, klass):
+    for method in iface.__abstractmethods__:
+        if not hasattr(klass, method):
+            raise InterfaceNotImplemented(
+                "{0} is missing a {1!r} method".format(klass, method)
+            )
+        if isinstance(getattr(iface, method), abc.abstractproperty):
+            # Can't properly verify these yet.
+            continue
+        sig = signature(getattr(iface, method))
+        actual = signature(getattr(klass, method))
+        if sig != actual:
+            raise InterfaceNotImplemented(
+                "{0}.{1}'s signature differs from the expected. Expected: "
+                "{2!r}. Received: {3!r}".format(
+                    klass, method, sig, actual
+                )
+            )
+
+
+# No longer needed as of 2.2, but retained because we have external consumers
+# who use it.
+def bit_length(x):
+    return x.bit_length()
+
+
+class _DeprecatedValue(object):
+    def __init__(self, value, message, warning_class):
+        self.value = value
+        self.message = message
+        self.warning_class = warning_class
+
+
+class _ModuleWithDeprecations(object):
+    def __init__(self, module):
+        self.__dict__["_module"] = module
+
+    def __getattr__(self, attr):
+        obj = getattr(self._module, attr)
+        if isinstance(obj, _DeprecatedValue):
+            warnings.warn(obj.message, obj.warning_class, stacklevel=2)
+            obj = obj.value
+        return obj
+
+    def __setattr__(self, attr, value):
+        setattr(self._module, attr, value)
+
+    def __delattr__(self, attr):
+        obj = getattr(self._module, attr)
+        if isinstance(obj, _DeprecatedValue):
+            warnings.warn(obj.message, obj.warning_class, stacklevel=2)
+
+        delattr(self._module, attr)
+
+    def __dir__(self):
+        return ["_module"] + dir(self._module)
+
+
+def deprecated(value, module_name, message, warning_class):
+    module = sys.modules[module_name]
+    if not isinstance(module, _ModuleWithDeprecations):
+        sys.modules[module_name] = _ModuleWithDeprecations(module)
+    return _DeprecatedValue(value, message, warning_class)
+
+
+def cached_property(func):
+    cached_name = "_cached_{0}".format(func)
+    sentinel = object()
+
+    def inner(instance):
+        cache = getattr(instance, cached_name, sentinel)
+        if cache is not sentinel:
+            return cache
+        result = func(instance)
+        setattr(instance, cached_name, result)
+        return result
+    return property(inner)

server/www/packages/packages-common/cryptography/x509/__init__.py

@@ -0,0 +1,185 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography.x509 import certificate_transparency
+from cryptography.x509.base import (
+    Certificate, CertificateBuilder, CertificateRevocationList,
+    CertificateRevocationListBuilder,
+    CertificateSigningRequest, CertificateSigningRequestBuilder,
+    InvalidVersion, RevokedCertificate, RevokedCertificateBuilder,
+    Version, load_der_x509_certificate, load_der_x509_crl, load_der_x509_csr,
+    load_pem_x509_certificate, load_pem_x509_crl, load_pem_x509_csr,
+    random_serial_number,
+)
+from cryptography.x509.extensions import (
+    AccessDescription, AuthorityInformationAccess,
+    AuthorityKeyIdentifier, BasicConstraints, CRLDistributionPoints,
+    CRLNumber, CRLReason, CertificateIssuer, CertificatePolicies,
+    DeltaCRLIndicator, DistributionPoint, DuplicateExtension, ExtendedKeyUsage,
+    Extension, ExtensionNotFound, ExtensionType, Extensions, FreshestCRL,
+    GeneralNames, InhibitAnyPolicy, InvalidityDate, IssuerAlternativeName,
+    KeyUsage, NameConstraints, NoticeReference, OCSPNoCheck, PolicyConstraints,
+    PolicyInformation, PrecertificateSignedCertificateTimestamps, ReasonFlags,
+    SubjectAlternativeName, SubjectKeyIdentifier, TLSFeature, TLSFeatureType,
+    UnrecognizedExtension, UserNotice
+)
+from cryptography.x509.general_name import (
+    DNSName, DirectoryName, GeneralName, IPAddress, OtherName, RFC822Name,
+    RegisteredID, UniformResourceIdentifier, UnsupportedGeneralNameType,
+    _GENERAL_NAMES
+)
+from cryptography.x509.name import (
+    Name, NameAttribute, RelativeDistinguishedName
+)
+from cryptography.x509.oid import (
+    AuthorityInformationAccessOID, CRLEntryExtensionOID,
+    CertificatePoliciesOID, ExtendedKeyUsageOID, ExtensionOID, NameOID,
+    ObjectIdentifier, SignatureAlgorithmOID, _SIG_OIDS_TO_HASH
+)
+
+
+OID_AUTHORITY_INFORMATION_ACCESS = ExtensionOID.AUTHORITY_INFORMATION_ACCESS
+OID_AUTHORITY_KEY_IDENTIFIER = ExtensionOID.AUTHORITY_KEY_IDENTIFIER
+OID_BASIC_CONSTRAINTS = ExtensionOID.BASIC_CONSTRAINTS
+OID_CERTIFICATE_POLICIES = ExtensionOID.CERTIFICATE_POLICIES
+OID_CRL_DISTRIBUTION_POINTS = ExtensionOID.CRL_DISTRIBUTION_POINTS
+OID_EXTENDED_KEY_USAGE = ExtensionOID.EXTENDED_KEY_USAGE
+OID_FRESHEST_CRL = ExtensionOID.FRESHEST_CRL
+OID_INHIBIT_ANY_POLICY = ExtensionOID.INHIBIT_ANY_POLICY
+OID_ISSUER_ALTERNATIVE_NAME = ExtensionOID.ISSUER_ALTERNATIVE_NAME
+OID_KEY_USAGE = ExtensionOID.KEY_USAGE
+OID_NAME_CONSTRAINTS = ExtensionOID.NAME_CONSTRAINTS
+OID_OCSP_NO_CHECK = ExtensionOID.OCSP_NO_CHECK
+OID_POLICY_CONSTRAINTS = ExtensionOID.POLICY_CONSTRAINTS
+OID_POLICY_MAPPINGS = ExtensionOID.POLICY_MAPPINGS
+OID_SUBJECT_ALTERNATIVE_NAME = ExtensionOID.SUBJECT_ALTERNATIVE_NAME
+OID_SUBJECT_DIRECTORY_ATTRIBUTES = ExtensionOID.SUBJECT_DIRECTORY_ATTRIBUTES
+OID_SUBJECT_INFORMATION_ACCESS = ExtensionOID.SUBJECT_INFORMATION_ACCESS
+OID_SUBJECT_KEY_IDENTIFIER = ExtensionOID.SUBJECT_KEY_IDENTIFIER
+
+OID_DSA_WITH_SHA1 = SignatureAlgorithmOID.DSA_WITH_SHA1
+OID_DSA_WITH_SHA224 = SignatureAlgorithmOID.DSA_WITH_SHA224
+OID_DSA_WITH_SHA256 = SignatureAlgorithmOID.DSA_WITH_SHA256
+OID_ECDSA_WITH_SHA1 = SignatureAlgorithmOID.ECDSA_WITH_SHA1
+OID_ECDSA_WITH_SHA224 = SignatureAlgorithmOID.ECDSA_WITH_SHA224
+OID_ECDSA_WITH_SHA256 = SignatureAlgorithmOID.ECDSA_WITH_SHA256
+OID_ECDSA_WITH_SHA384 = SignatureAlgorithmOID.ECDSA_WITH_SHA384
+OID_ECDSA_WITH_SHA512 = SignatureAlgorithmOID.ECDSA_WITH_SHA512
+OID_RSA_WITH_MD5 = SignatureAlgorithmOID.RSA_WITH_MD5
+OID_RSA_WITH_SHA1 = SignatureAlgorithmOID.RSA_WITH_SHA1
+OID_RSA_WITH_SHA224 = SignatureAlgorithmOID.RSA_WITH_SHA224
+OID_RSA_WITH_SHA256 = SignatureAlgorithmOID.RSA_WITH_SHA256
+OID_RSA_WITH_SHA384 = SignatureAlgorithmOID.RSA_WITH_SHA384
+OID_RSA_WITH_SHA512 = SignatureAlgorithmOID.RSA_WITH_SHA512
+OID_RSASSA_PSS = SignatureAlgorithmOID.RSASSA_PSS
+
+OID_COMMON_NAME = NameOID.COMMON_NAME
+OID_COUNTRY_NAME = NameOID.COUNTRY_NAME
+OID_DOMAIN_COMPONENT = NameOID.DOMAIN_COMPONENT
+OID_DN_QUALIFIER = NameOID.DN_QUALIFIER
+OID_EMAIL_ADDRESS = NameOID.EMAIL_ADDRESS
+OID_GENERATION_QUALIFIER = NameOID.GENERATION_QUALIFIER
+OID_GIVEN_NAME = NameOID.GIVEN_NAME
+OID_LOCALITY_NAME = NameOID.LOCALITY_NAME
+OID_ORGANIZATIONAL_UNIT_NAME = NameOID.ORGANIZATIONAL_UNIT_NAME
+OID_ORGANIZATION_NAME = NameOID.ORGANIZATION_NAME
+OID_PSEUDONYM = NameOID.PSEUDONYM
+OID_SERIAL_NUMBER = NameOID.SERIAL_NUMBER
+OID_STATE_OR_PROVINCE_NAME = NameOID.STATE_OR_PROVINCE_NAME
+OID_SURNAME = NameOID.SURNAME
+OID_TITLE = NameOID.TITLE
+
+OID_CLIENT_AUTH = ExtendedKeyUsageOID.CLIENT_AUTH
+OID_CODE_SIGNING = ExtendedKeyUsageOID.CODE_SIGNING
+OID_EMAIL_PROTECTION = ExtendedKeyUsageOID.EMAIL_PROTECTION
+OID_OCSP_SIGNING = ExtendedKeyUsageOID.OCSP_SIGNING
+OID_SERVER_AUTH = ExtendedKeyUsageOID.SERVER_AUTH
+OID_TIME_STAMPING = ExtendedKeyUsageOID.TIME_STAMPING
+
+OID_ANY_POLICY = CertificatePoliciesOID.ANY_POLICY
+OID_CPS_QUALIFIER = CertificatePoliciesOID.CPS_QUALIFIER
+OID_CPS_USER_NOTICE = CertificatePoliciesOID.CPS_USER_NOTICE
+
+OID_CERTIFICATE_ISSUER = CRLEntryExtensionOID.CERTIFICATE_ISSUER
+OID_CRL_REASON = CRLEntryExtensionOID.CRL_REASON
+OID_INVALIDITY_DATE = CRLEntryExtensionOID.INVALIDITY_DATE
+
+OID_CA_ISSUERS = AuthorityInformationAccessOID.CA_ISSUERS
+OID_OCSP = AuthorityInformationAccessOID.OCSP
+
+__all__ = [
+    "certificate_transparency",
+    "load_pem_x509_certificate",
+    "load_der_x509_certificate",
+    "load_pem_x509_csr",
+    "load_der_x509_csr",
+    "load_pem_x509_crl",
+    "load_der_x509_crl",
+    "random_serial_number",
+    "InvalidVersion",
+    "DeltaCRLIndicator",
+    "DuplicateExtension",
+    "ExtensionNotFound",
+    "UnsupportedGeneralNameType",
+    "NameAttribute",
+    "Name",
+    "RelativeDistinguishedName",
+    "ObjectIdentifier",
+    "ExtensionType",
+    "Extensions",
+    "Extension",
+    "ExtendedKeyUsage",
+    "FreshestCRL",
+    "TLSFeature",
+    "TLSFeatureType",
+    "OCSPNoCheck",
+    "BasicConstraints",
+    "CRLNumber",
+    "KeyUsage",
+    "AuthorityInformationAccess",
+    "AccessDescription",
+    "CertificatePolicies",
+    "PolicyInformation",
+    "UserNotice",
+    "NoticeReference",
+    "SubjectKeyIdentifier",
+    "NameConstraints",
+    "CRLDistributionPoints",
+    "DistributionPoint",
+    "ReasonFlags",
+    "InhibitAnyPolicy",
+    "SubjectAlternativeName",
+    "IssuerAlternativeName",
+    "AuthorityKeyIdentifier",
+    "GeneralNames",
+    "GeneralName",
+    "RFC822Name",
+    "DNSName",
+    "UniformResourceIdentifier",
+    "RegisteredID",
+    "DirectoryName",
+    "IPAddress",
+    "OtherName",
+    "Certificate",
+    "CertificateRevocationList",
+    "CertificateRevocationListBuilder",
+    "CertificateSigningRequest",
+    "RevokedCertificate",
+    "RevokedCertificateBuilder",
+    "CertificateSigningRequestBuilder",
+    "CertificateBuilder",
+    "Version",
+    "_SIG_OIDS_TO_HASH",
+    "OID_CA_ISSUERS",
+    "OID_OCSP",
+    "_GENERAL_NAMES",
+    "CertificateIssuer",
+    "CRLReason",
+    "InvalidityDate",
+    "UnrecognizedExtension",
+    "PolicyConstraints",
+    "PrecertificateSignedCertificateTimestamps",
+]

server/www/packages/packages-common/cryptography/x509/base.py

@@ -0,0 +1,743 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+import datetime
+import os
+from enum import Enum
+
+import six
+
+from cryptography import utils
+from cryptography.hazmat.primitives.asymmetric import dsa, ec, rsa
+from cryptography.x509.extensions import Extension, ExtensionType
+from cryptography.x509.name import Name
+
+
+_UNIX_EPOCH = datetime.datetime(1970, 1, 1)
+
+
+def _convert_to_naive_utc_time(time):
+    """Normalizes a datetime to a naive datetime in UTC.
+
+    time -- datetime to normalize. Assumed to be in UTC if not timezone
+            aware.
+    """
+    if time.tzinfo is not None:
+        offset = time.utcoffset()
+        offset = offset if offset else datetime.timedelta()
+        return time.replace(tzinfo=None) - offset
+    else:
+        return time
+
+
+class Version(Enum):
+    v1 = 0
+    v3 = 2
+
+
+def load_pem_x509_certificate(data, backend):
+    return backend.load_pem_x509_certificate(data)
+
+
+def load_der_x509_certificate(data, backend):
+    return backend.load_der_x509_certificate(data)
+
+
+def load_pem_x509_csr(data, backend):
+    return backend.load_pem_x509_csr(data)
+
+
+def load_der_x509_csr(data, backend):
+    return backend.load_der_x509_csr(data)
+
+
+def load_pem_x509_crl(data, backend):
+    return backend.load_pem_x509_crl(data)
+
+
+def load_der_x509_crl(data, backend):
+    return backend.load_der_x509_crl(data)
+
+
+class InvalidVersion(Exception):
+    def __init__(self, msg, parsed_version):
+        super(InvalidVersion, self).__init__(msg)
+        self.parsed_version = parsed_version
+
+
+@six.add_metaclass(abc.ABCMeta)
+class Certificate(object):
+    @abc.abstractmethod
+    def fingerprint(self, algorithm):
+        """
+        Returns bytes using digest passed.
+        """
+
+    @abc.abstractproperty
+    def serial_number(self):
+        """
+        Returns certificate serial number
+        """
+
+    @abc.abstractproperty
+    def version(self):
+        """
+        Returns the certificate version
+        """
+
+    @abc.abstractmethod
+    def public_key(self):
+        """
+        Returns the public key
+        """
+
+    @abc.abstractproperty
+    def not_valid_before(self):
+        """
+        Not before time (represented as UTC datetime)
+        """
+
+    @abc.abstractproperty
+    def not_valid_after(self):
+        """
+        Not after time (represented as UTC datetime)
+        """
+
+    @abc.abstractproperty
+    def issuer(self):
+        """
+        Returns the issuer name object.
+        """
+
+    @abc.abstractproperty
+    def subject(self):
+        """
+        Returns the subject name object.
+        """
+
+    @abc.abstractproperty
+    def signature_hash_algorithm(self):
+        """
+        Returns a HashAlgorithm corresponding to the type of the digest signed
+        in the certificate.
+        """
+
+    @abc.abstractproperty
+    def signature_algorithm_oid(self):
+        """
+        Returns the ObjectIdentifier of the signature algorithm.
+        """
+
+    @abc.abstractproperty
+    def extensions(self):
+        """
+        Returns an Extensions object.
+        """
+
+    @abc.abstractproperty
+    def signature(self):
+        """
+        Returns the signature bytes.
+        """
+
+    @abc.abstractproperty
+    def tbs_certificate_bytes(self):
+        """
+        Returns the tbsCertificate payload bytes as defined in RFC 5280.
+        """
+
+    @abc.abstractmethod
+    def __eq__(self, other):
+        """
+        Checks equality.
+        """
+
+    @abc.abstractmethod
+    def __ne__(self, other):
+        """
+        Checks not equal.
+        """
+
+    @abc.abstractmethod
+    def __hash__(self):
+        """
+        Computes a hash.
+        """
+
+    @abc.abstractmethod
+    def public_bytes(self, encoding):
+        """
+        Serializes the certificate to PEM or DER format.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class CertificateRevocationList(object):
+    @abc.abstractmethod
+    def public_bytes(self, encoding):
+        """
+        Serializes the CRL to PEM or DER format.
+        """
+
+    @abc.abstractmethod
+    def fingerprint(self, algorithm):
+        """
+        Returns bytes using digest passed.
+        """
+
+    @abc.abstractmethod
+    def get_revoked_certificate_by_serial_number(self, serial_number):
+        """
+        Returns an instance of RevokedCertificate or None if the serial_number
+        is not in the CRL.
+        """
+
+    @abc.abstractproperty
+    def signature_hash_algorithm(self):
+        """
+        Returns a HashAlgorithm corresponding to the type of the digest signed
+        in the certificate.
+        """
+
+    @abc.abstractproperty
+    def signature_algorithm_oid(self):
+        """
+        Returns the ObjectIdentifier of the signature algorithm.
+        """
+
+    @abc.abstractproperty
+    def issuer(self):
+        """
+        Returns the X509Name with the issuer of this CRL.
+        """
+
+    @abc.abstractproperty
+    def next_update(self):
+        """
+        Returns the date of next update for this CRL.
+        """
+
+    @abc.abstractproperty
+    def last_update(self):
+        """
+        Returns the date of last update for this CRL.
+        """
+
+    @abc.abstractproperty
+    def extensions(self):
+        """
+        Returns an Extensions object containing a list of CRL extensions.
+        """
+
+    @abc.abstractproperty
+    def signature(self):
+        """
+        Returns the signature bytes.
+        """
+
+    @abc.abstractproperty
+    def tbs_certlist_bytes(self):
+        """
+        Returns the tbsCertList payload bytes as defined in RFC 5280.
+        """
+
+    @abc.abstractmethod
+    def __eq__(self, other):
+        """
+        Checks equality.
+        """
+
+    @abc.abstractmethod
+    def __ne__(self, other):
+        """
+        Checks not equal.
+        """
+
+    @abc.abstractmethod
+    def is_signature_valid(self, public_key):
+        """
+        Verifies signature of revocation list against given public key.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class CertificateSigningRequest(object):
+    @abc.abstractmethod
+    def __eq__(self, other):
+        """
+        Checks equality.
+        """
+
+    @abc.abstractmethod
+    def __ne__(self, other):
+        """
+        Checks not equal.
+        """
+
+    @abc.abstractmethod
+    def __hash__(self):
+        """
+        Computes a hash.
+        """
+
+    @abc.abstractmethod
+    def public_key(self):
+        """
+        Returns the public key
+        """
+
+    @abc.abstractproperty
+    def subject(self):
+        """
+        Returns the subject name object.
+        """
+
+    @abc.abstractproperty
+    def signature_hash_algorithm(self):
+        """
+        Returns a HashAlgorithm corresponding to the type of the digest signed
+        in the certificate.
+        """
+
+    @abc.abstractproperty
+    def signature_algorithm_oid(self):
+        """
+        Returns the ObjectIdentifier of the signature algorithm.
+        """
+
+    @abc.abstractproperty
+    def extensions(self):
+        """
+        Returns the extensions in the signing request.
+        """
+
+    @abc.abstractmethod
+    def public_bytes(self, encoding):
+        """
+        Encodes the request to PEM or DER format.
+        """
+
+    @abc.abstractproperty
+    def signature(self):
+        """
+        Returns the signature bytes.
+        """
+
+    @abc.abstractproperty
+    def tbs_certrequest_bytes(self):
+        """
+        Returns the PKCS#10 CertificationRequestInfo bytes as defined in RFC
+        2986.
+        """
+
+    @abc.abstractproperty
+    def is_signature_valid(self):
+        """
+        Verifies signature of signing request.
+        """
+
+
+@six.add_metaclass(abc.ABCMeta)
+class RevokedCertificate(object):
+    @abc.abstractproperty
+    def serial_number(self):
+        """
+        Returns the serial number of the revoked certificate.
+        """
+
+    @abc.abstractproperty
+    def revocation_date(self):
+        """
+        Returns the date of when this certificate was revoked.
+        """
+
+    @abc.abstractproperty
+    def extensions(self):
+        """
+        Returns an Extensions object containing a list of Revoked extensions.
+        """
+
+
+class CertificateSigningRequestBuilder(object):
+    def __init__(self, subject_name=None, extensions=[]):
+        """
+        Creates an empty X.509 certificate request (v1).
+        """
+        self._subject_name = subject_name
+        self._extensions = extensions
+
+    def subject_name(self, name):
+        """
+        Sets the certificate requestor's distinguished name.
+        """
+        if not isinstance(name, Name):
+            raise TypeError('Expecting x509.Name object.')
+        if self._subject_name is not None:
+            raise ValueError('The subject name may only be set once.')
+        return CertificateSigningRequestBuilder(name, self._extensions)
+
+    def add_extension(self, extension, critical):
+        """
+        Adds an X.509 extension to the certificate request.
+        """
+        if not isinstance(extension, ExtensionType):
+            raise TypeError("extension must be an ExtensionType")
+
+        extension = Extension(extension.oid, critical, extension)
+
+        # TODO: This is quadratic in the number of extensions
+        for e in self._extensions:
+            if e.oid == extension.oid:
+                raise ValueError('This extension has already been set.')
+        return CertificateSigningRequestBuilder(
+            self._subject_name, self._extensions + [extension]
+        )
+
+    def sign(self, private_key, algorithm, backend):
+        """
+        Signs the request using the requestor's private key.
+        """
+        if self._subject_name is None:
+            raise ValueError("A CertificateSigningRequest must have a subject")
+        return backend.create_x509_csr(self, private_key, algorithm)
+
+
+class CertificateBuilder(object):
+    def __init__(self, issuer_name=None, subject_name=None,
+                 public_key=None, serial_number=None, not_valid_before=None,
+                 not_valid_after=None, extensions=[]):
+        self._version = Version.v3
+        self._issuer_name = issuer_name
+        self._subject_name = subject_name
+        self._public_key = public_key
+        self._serial_number = serial_number
+        self._not_valid_before = not_valid_before
+        self._not_valid_after = not_valid_after
+        self._extensions = extensions
+
+    def issuer_name(self, name):
+        """
+        Sets the CA's distinguished name.
+        """
+        if not isinstance(name, Name):
+            raise TypeError('Expecting x509.Name object.')
+        if self._issuer_name is not None:
+            raise ValueError('The issuer name may only be set once.')
+        return CertificateBuilder(
+            name, self._subject_name, self._public_key,
+            self._serial_number, self._not_valid_before,
+            self._not_valid_after, self._extensions
+        )
+
+    def subject_name(self, name):
+        """
+        Sets the requestor's distinguished name.
+        """
+        if not isinstance(name, Name):
+            raise TypeError('Expecting x509.Name object.')
+        if self._subject_name is not None:
+            raise ValueError('The subject name may only be set once.')
+        return CertificateBuilder(
+            self._issuer_name, name, self._public_key,
+            self._serial_number, self._not_valid_before,
+            self._not_valid_after, self._extensions
+        )
+
+    def public_key(self, key):
+        """
+        Sets the requestor's public key (as found in the signing request).
+        """
+        if not isinstance(key, (dsa.DSAPublicKey, rsa.RSAPublicKey,
+                                ec.EllipticCurvePublicKey)):
+            raise TypeError('Expecting one of DSAPublicKey, RSAPublicKey,'
+                            ' or EllipticCurvePublicKey.')
+        if self._public_key is not None:
+            raise ValueError('The public key may only be set once.')
+        return CertificateBuilder(
+            self._issuer_name, self._subject_name, key,
+            self._serial_number, self._not_valid_before,
+            self._not_valid_after, self._extensions
+        )
+
+    def serial_number(self, number):
+        """
+        Sets the certificate serial number.
+        """
+        if not isinstance(number, six.integer_types):
+            raise TypeError('Serial number must be of integral type.')
+        if self._serial_number is not None:
+            raise ValueError('The serial number may only be set once.')
+        if number <= 0:
+            raise ValueError('The serial number should be positive.')
+
+        # ASN.1 integers are always signed, so most significant bit must be
+        # zero.
+        if number.bit_length() >= 160:  # As defined in RFC 5280
+            raise ValueError('The serial number should not be more than 159 '
+                             'bits.')
+        return CertificateBuilder(
+            self._issuer_name, self._subject_name,
+            self._public_key, number, self._not_valid_before,
+            self._not_valid_after, self._extensions
+        )
+
+    def not_valid_before(self, time):
+        """
+        Sets the certificate activation time.
+        """
+        if not isinstance(time, datetime.datetime):
+            raise TypeError('Expecting datetime object.')
+        if self._not_valid_before is not None:
+            raise ValueError('The not valid before may only be set once.')
+        time = _convert_to_naive_utc_time(time)
+        if time <= _UNIX_EPOCH:
+            raise ValueError('The not valid before date must be after the unix'
+                             ' epoch (1970 January 1).')
+        if self._not_valid_after is not None and time > self._not_valid_after:
+            raise ValueError(
+                'The not valid before date must be before the not valid after '
+                'date.'
+            )
+        return CertificateBuilder(
+            self._issuer_name, self._subject_name,
+            self._public_key, self._serial_number, time,
+            self._not_valid_after, self._extensions
+        )
+
+    def not_valid_after(self, time):
+        """
+        Sets the certificate expiration time.
+        """
+        if not isinstance(time, datetime.datetime):
+            raise TypeError('Expecting datetime object.')
+        if self._not_valid_after is not None:
+            raise ValueError('The not valid after may only be set once.')
+        time = _convert_to_naive_utc_time(time)
+        if time <= _UNIX_EPOCH:
+            raise ValueError('The not valid after date must be after the unix'
+                             ' epoch (1970 January 1).')
+        if (self._not_valid_before is not None and
+                time < self._not_valid_before):
+            raise ValueError(
+                'The not valid after date must be after the not valid before '
+                'date.'
+            )
+        return CertificateBuilder(
+            self._issuer_name, self._subject_name,
+            self._public_key, self._serial_number, self._not_valid_before,
+            time, self._extensions
+        )
+
+    def add_extension(self, extension, critical):
+        """
+        Adds an X.509 extension to the certificate.
+        """
+        if not isinstance(extension, ExtensionType):
+            raise TypeError("extension must be an ExtensionType")
+
+        extension = Extension(extension.oid, critical, extension)
+
+        # TODO: This is quadratic in the number of extensions
+        for e in self._extensions:
+            if e.oid == extension.oid:
+                raise ValueError('This extension has already been set.')
+
+        return CertificateBuilder(
+            self._issuer_name, self._subject_name,
+            self._public_key, self._serial_number, self._not_valid_before,
+            self._not_valid_after, self._extensions + [extension]
+        )
+
+    def sign(self, private_key, algorithm, backend):
+        """
+        Signs the certificate using the CA's private key.
+        """
+        if self._subject_name is None:
+            raise ValueError("A certificate must have a subject name")
+
+        if self._issuer_name is None:
+            raise ValueError("A certificate must have an issuer name")
+
+        if self._serial_number is None:
+            raise ValueError("A certificate must have a serial number")
+
+        if self._not_valid_before is None:
+            raise ValueError("A certificate must have a not valid before time")
+
+        if self._not_valid_after is None:
+            raise ValueError("A certificate must have a not valid after time")
+
+        if self._public_key is None:
+            raise ValueError("A certificate must have a public key")
+
+        return backend.create_x509_certificate(self, private_key, algorithm)
+
+
+class CertificateRevocationListBuilder(object):
+    def __init__(self, issuer_name=None, last_update=None, next_update=None,
+                 extensions=[], revoked_certificates=[]):
+        self._issuer_name = issuer_name
+        self._last_update = last_update
+        self._next_update = next_update
+        self._extensions = extensions
+        self._revoked_certificates = revoked_certificates
+
+    def issuer_name(self, issuer_name):
+        if not isinstance(issuer_name, Name):
+            raise TypeError('Expecting x509.Name object.')
+        if self._issuer_name is not None:
+            raise ValueError('The issuer name may only be set once.')
+        return CertificateRevocationListBuilder(
+            issuer_name, self._last_update, self._next_update,
+            self._extensions, self._revoked_certificates
+        )
+
+    def last_update(self, last_update):
+        if not isinstance(last_update, datetime.datetime):
+            raise TypeError('Expecting datetime object.')
+        if self._last_update is not None:
+            raise ValueError('Last update may only be set once.')
+        last_update = _convert_to_naive_utc_time(last_update)
+        if last_update <= _UNIX_EPOCH:
+            raise ValueError('The last update date must be after the unix'
+                             ' epoch (1970 January 1).')
+        if self._next_update is not None and last_update > self._next_update:
+            raise ValueError(
+                'The last update date must be before the next update date.'
+            )
+        return CertificateRevocationListBuilder(
+            self._issuer_name, last_update, self._next_update,
+            self._extensions, self._revoked_certificates
+        )
+
+    def next_update(self, next_update):
+        if not isinstance(next_update, datetime.datetime):
+            raise TypeError('Expecting datetime object.')
+        if self._next_update is not None:
+            raise ValueError('Last update may only be set once.')
+        next_update = _convert_to_naive_utc_time(next_update)
+        if next_update <= _UNIX_EPOCH:
+            raise ValueError('The last update date must be after the unix'
+                             ' epoch (1970 January 1).')
+        if self._last_update is not None and next_update < self._last_update:
+            raise ValueError(
+                'The next update date must be after the last update date.'
+            )
+        return CertificateRevocationListBuilder(
+            self._issuer_name, self._last_update, next_update,
+            self._extensions, self._revoked_certificates
+        )
+
+    def add_extension(self, extension, critical):
+        """
+        Adds an X.509 extension to the certificate revocation list.
+        """
+        if not isinstance(extension, ExtensionType):
+            raise TypeError("extension must be an ExtensionType")
+
+        extension = Extension(extension.oid, critical, extension)
+
+        # TODO: This is quadratic in the number of extensions
+        for e in self._extensions:
+            if e.oid == extension.oid:
+                raise ValueError('This extension has already been set.')
+        return CertificateRevocationListBuilder(
+            self._issuer_name, self._last_update, self._next_update,
+            self._extensions + [extension], self._revoked_certificates
+        )
+
+    def add_revoked_certificate(self, revoked_certificate):
+        """
+        Adds a revoked certificate to the CRL.
+        """
+        if not isinstance(revoked_certificate, RevokedCertificate):
+            raise TypeError("Must be an instance of RevokedCertificate")
+
+        return CertificateRevocationListBuilder(
+            self._issuer_name, self._last_update,
+            self._next_update, self._extensions,
+            self._revoked_certificates + [revoked_certificate]
+        )
+
+    def sign(self, private_key, algorithm, backend):
+        if self._issuer_name is None:
+            raise ValueError("A CRL must have an issuer name")
+
+        if self._last_update is None:
+            raise ValueError("A CRL must have a last update time")
+
+        if self._next_update is None:
+            raise ValueError("A CRL must have a next update time")
+
+        return backend.create_x509_crl(self, private_key, algorithm)
+
+
+class RevokedCertificateBuilder(object):
+    def __init__(self, serial_number=None, revocation_date=None,
+                 extensions=[]):
+        self._serial_number = serial_number
+        self._revocation_date = revocation_date
+        self._extensions = extensions
+
+    def serial_number(self, number):
+        if not isinstance(number, six.integer_types):
+            raise TypeError('Serial number must be of integral type.')
+        if self._serial_number is not None:
+            raise ValueError('The serial number may only be set once.')
+        if number <= 0:
+            raise ValueError('The serial number should be positive')
+
+        # ASN.1 integers are always signed, so most significant bit must be
+        # zero.
+        if number.bit_length() >= 160:  # As defined in RFC 5280
+            raise ValueError('The serial number should not be more than 159 '
+                             'bits.')
+        return RevokedCertificateBuilder(
+            number, self._revocation_date, self._extensions
+        )
+
+    def revocation_date(self, time):
+        if not isinstance(time, datetime.datetime):
+            raise TypeError('Expecting datetime object.')
+        if self._revocation_date is not None:
+            raise ValueError('The revocation date may only be set once.')
+        time = _convert_to_naive_utc_time(time)
+        if time <= _UNIX_EPOCH:
+            raise ValueError('The revocation date must be after the unix'
+                             ' epoch (1970 January 1).')
+        return RevokedCertificateBuilder(
+            self._serial_number, time, self._extensions
+        )
+
+    def add_extension(self, extension, critical):
+        if not isinstance(extension, ExtensionType):
+            raise TypeError("extension must be an ExtensionType")
+
+        extension = Extension(extension.oid, critical, extension)
+
+        # TODO: This is quadratic in the number of extensions
+        for e in self._extensions:
+            if e.oid == extension.oid:
+                raise ValueError('This extension has already been set.')
+        return RevokedCertificateBuilder(
+            self._serial_number, self._revocation_date,
+            self._extensions + [extension]
+        )
+
+    def build(self, backend):
+        if self._serial_number is None:
+            raise ValueError("A revoked certificate must have a serial number")
+        if self._revocation_date is None:
+            raise ValueError(
+                "A revoked certificate must have a revocation date"
+            )
+
+        return backend.create_x509_revoked_certificate(self)
+
+
+def random_serial_number():
+    return utils.int_from_bytes(os.urandom(20), "big") >> 1

server/www/packages/packages-common/cryptography/x509/certificate_transparency.py

@@ -0,0 +1,46 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+from enum import Enum
+
+import six
+
+
+class LogEntryType(Enum):
+    X509_CERTIFICATE = 0
+    PRE_CERTIFICATE = 1
+
+
+class Version(Enum):
+    v1 = 0
+
+
+@six.add_metaclass(abc.ABCMeta)
+class SignedCertificateTimestamp(object):
+    @abc.abstractproperty
+    def version(self):
+        """
+        Returns the SCT version.
+        """
+
+    @abc.abstractproperty
+    def log_id(self):
+        """
+        Returns an identifier indicating which log this SCT is for.
+        """
+
+    @abc.abstractproperty
+    def timestamp(self):
+        """
+        Returns the timestamp for this SCT.
+        """
+
+    @abc.abstractproperty
+    def entry_type(self):
+        """
+        Returns whether this is an SCT for a certificate or pre-certificate.
+        """

server/www/packages/packages-common/cryptography/x509/general_name.py

@@ -0,0 +1,345 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+import abc
+import ipaddress
+import warnings
+from email.utils import parseaddr
+
+import idna
+
+import six
+from six.moves import urllib_parse
+
+from cryptography import utils
+from cryptography.x509.name import Name
+from cryptography.x509.oid import ObjectIdentifier
+
+
+_GENERAL_NAMES = {
+    0: "otherName",
+    1: "rfc822Name",
+    2: "dNSName",
+    3: "x400Address",
+    4: "directoryName",
+    5: "ediPartyName",
+    6: "uniformResourceIdentifier",
+    7: "iPAddress",
+    8: "registeredID",
+}
+
+
+class UnsupportedGeneralNameType(Exception):
+    def __init__(self, msg, type):
+        super(UnsupportedGeneralNameType, self).__init__(msg)
+        self.type = type
+
+
+@six.add_metaclass(abc.ABCMeta)
+class GeneralName(object):
+    @abc.abstractproperty
+    def value(self):
+        """
+        Return the value of the object
+        """
+
+
+@utils.register_interface(GeneralName)
+class RFC822Name(object):
+    def __init__(self, value):
+        if isinstance(value, six.text_type):
+            try:
+                value.encode("ascii")
+            except UnicodeEncodeError:
+                value = self._idna_encode(value)
+                warnings.warn(
+                    "RFC822Name values should be passed as an A-label string. "
+                    "This means unicode characters should be encoded via "
+                    "idna. Support for passing unicode strings (aka U-label) "
+                    "will be removed in a future version.",
+                    utils.DeprecatedIn21,
+                    stacklevel=2,
+                )
+        else:
+            raise TypeError("value must be string")
+
+        name, address = parseaddr(value)
+        if name or not address:
+            # parseaddr has found a name (e.g. Name <email>) or the entire
+            # value is an empty string.
+            raise ValueError("Invalid rfc822name value")
+
+        self._value = value
+
+    value = utils.read_only_property("_value")
+
+    @classmethod
+    def _init_without_validation(cls, value):
+        instance = cls.__new__(cls)
+        instance._value = value
+        return instance
+
+    def _idna_encode(self, value):
+        _, address = parseaddr(value)
+        parts = address.split(u"@")
+        return parts[0] + "@" + idna.encode(parts[1]).decode("ascii")
+
+    def __repr__(self):
+        return "<RFC822Name(value={0!r})>".format(self.value)
+
+    def __eq__(self, other):
+        if not isinstance(other, RFC822Name):
+            return NotImplemented
+
+        return self.value == other.value
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self.value)
+
+
+def _idna_encode(value):
+    # Retain prefixes '*.' for common/alt names and '.' for name constraints
+    for prefix in ['*.', '.']:
+        if value.startswith(prefix):
+            value = value[len(prefix):]
+            return prefix + idna.encode(value).decode("ascii")
+    return idna.encode(value).decode("ascii")
+
+
+@utils.register_interface(GeneralName)
+class DNSName(object):
+    def __init__(self, value):
+        if isinstance(value, six.text_type):
+            try:
+                value.encode("ascii")
+            except UnicodeEncodeError:
+                value = _idna_encode(value)
+                warnings.warn(
+                    "DNSName values should be passed as an A-label string. "
+                    "This means unicode characters should be encoded via "
+                    "idna. Support for passing unicode strings (aka U-label) "
+                    "will be removed in a future version.",
+                    utils.DeprecatedIn21,
+                    stacklevel=2,
+                )
+        else:
+            raise TypeError("value must be string")
+
+        self._value = value
+
+    value = utils.read_only_property("_value")
+
+    @classmethod
+    def _init_without_validation(cls, value):
+        instance = cls.__new__(cls)
+        instance._value = value
+        return instance
+
+    def __repr__(self):
+        return "<DNSName(value={0!r})>".format(self.value)
+
+    def __eq__(self, other):
+        if not isinstance(other, DNSName):
+            return NotImplemented
+
+        return self.value == other.value
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self.value)
+
+
+@utils.register_interface(GeneralName)
+class UniformResourceIdentifier(object):
+    def __init__(self, value):
+        if isinstance(value, six.text_type):
+            try:
+                value.encode("ascii")
+            except UnicodeEncodeError:
+                value = self._idna_encode(value)
+                warnings.warn(
+                    "URI values should be passed as an A-label string. "
+                    "This means unicode characters should be encoded via "
+                    "idna. Support for passing unicode strings (aka U-label) "
+                    " will be removed in a future version.",
+                    utils.DeprecatedIn21,
+                    stacklevel=2,
+                )
+        else:
+            raise TypeError("value must be string")
+
+        self._value = value
+
+    value = utils.read_only_property("_value")
+
+    @classmethod
+    def _init_without_validation(cls, value):
+        instance = cls.__new__(cls)
+        instance._value = value
+        return instance
+
+    def _idna_encode(self, value):
+        parsed = urllib_parse.urlparse(value)
+        if parsed.port:
+            netloc = (
+                idna.encode(parsed.hostname) +
+                ":{0}".format(parsed.port).encode("ascii")
+            ).decode("ascii")
+        else:
+            netloc = idna.encode(parsed.hostname).decode("ascii")
+
+        # Note that building a URL in this fashion means it should be
+        # semantically indistinguishable from the original but is not
+        # guaranteed to be exactly the same.
+        return urllib_parse.urlunparse((
+            parsed.scheme,
+            netloc,
+            parsed.path,
+            parsed.params,
+            parsed.query,
+            parsed.fragment
+        ))
+
+    def __repr__(self):
+        return "<UniformResourceIdentifier(value={0!r})>".format(self.value)
+
+    def __eq__(self, other):
+        if not isinstance(other, UniformResourceIdentifier):
+            return NotImplemented
+
+        return self.value == other.value
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self.value)
+
+
+@utils.register_interface(GeneralName)
+class DirectoryName(object):
+    def __init__(self, value):
+        if not isinstance(value, Name):
+            raise TypeError("value must be a Name")
+
+        self._value = value
+
+    value = utils.read_only_property("_value")
+
+    def __repr__(self):
+        return "<DirectoryName(value={0})>".format(self.value)
+
+    def __eq__(self, other):
+        if not isinstance(other, DirectoryName):
+            return NotImplemented
+
+        return self.value == other.value
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self.value)
+
+
+@utils.register_interface(GeneralName)
+class RegisteredID(object):
+    def __init__(self, value):
+        if not isinstance(value, ObjectIdentifier):
+            raise TypeError("value must be an ObjectIdentifier")
+
+        self._value = value
+
+    value = utils.read_only_property("_value")
+
+    def __repr__(self):
+        return "<RegisteredID(value={0})>".format(self.value)
+
+    def __eq__(self, other):
+        if not isinstance(other, RegisteredID):
+            return NotImplemented
+
+        return self.value == other.value
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self.value)
+
+
+@utils.register_interface(GeneralName)
+class IPAddress(object):
+    def __init__(self, value):
+        if not isinstance(
+            value,
+            (
+                ipaddress.IPv4Address,
+                ipaddress.IPv6Address,
+                ipaddress.IPv4Network,
+                ipaddress.IPv6Network
+            )
+        ):
+            raise TypeError(
+                "value must be an instance of ipaddress.IPv4Address, "
+                "ipaddress.IPv6Address, ipaddress.IPv4Network, or "
+                "ipaddress.IPv6Network"
+            )
+
+        self._value = value
+
+    value = utils.read_only_property("_value")
+
+    def __repr__(self):
+        return "<IPAddress(value={0})>".format(self.value)
+
+    def __eq__(self, other):
+        if not isinstance(other, IPAddress):
+            return NotImplemented
+
+        return self.value == other.value
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self.value)
+
+
+@utils.register_interface(GeneralName)
+class OtherName(object):
+    def __init__(self, type_id, value):
+        if not isinstance(type_id, ObjectIdentifier):
+            raise TypeError("type_id must be an ObjectIdentifier")
+        if not isinstance(value, bytes):
+            raise TypeError("value must be a binary string")
+
+        self._type_id = type_id
+        self._value = value
+
+    type_id = utils.read_only_property("_type_id")
+    value = utils.read_only_property("_value")
+
+    def __repr__(self):
+        return "<OtherName(type_id={0}, value={1!r})>".format(
+            self.type_id, self.value)
+
+    def __eq__(self, other):
+        if not isinstance(other, OtherName):
+            return NotImplemented
+
+        return self.type_id == other.type_id and self.value == other.value
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash((self.type_id, self.value))

server/www/packages/packages-common/cryptography/x509/name.py

@@ -0,0 +1,190 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from enum import Enum
+
+import six
+
+from cryptography import utils
+from cryptography.x509.oid import NameOID, ObjectIdentifier
+
+
+class _ASN1Type(Enum):
+    UTF8String = 12
+    NumericString = 18
+    PrintableString = 19
+    T61String = 20
+    IA5String = 22
+    UTCTime = 23
+    GeneralizedTime = 24
+    VisibleString = 26
+    UniversalString = 28
+    BMPString = 30
+
+
+_ASN1_TYPE_TO_ENUM = dict((i.value, i) for i in _ASN1Type)
+_SENTINEL = object()
+_NAMEOID_DEFAULT_TYPE = {
+    NameOID.COUNTRY_NAME: _ASN1Type.PrintableString,
+    NameOID.JURISDICTION_COUNTRY_NAME: _ASN1Type.PrintableString,
+    NameOID.SERIAL_NUMBER: _ASN1Type.PrintableString,
+    NameOID.DN_QUALIFIER: _ASN1Type.PrintableString,
+    NameOID.EMAIL_ADDRESS: _ASN1Type.IA5String,
+    NameOID.DOMAIN_COMPONENT: _ASN1Type.IA5String,
+}
+
+
+class NameAttribute(object):
+    def __init__(self, oid, value, _type=_SENTINEL):
+        if not isinstance(oid, ObjectIdentifier):
+            raise TypeError(
+                "oid argument must be an ObjectIdentifier instance."
+            )
+
+        if not isinstance(value, six.text_type):
+            raise TypeError(
+                "value argument must be a text type."
+            )
+
+        if (
+            oid == NameOID.COUNTRY_NAME or
+            oid == NameOID.JURISDICTION_COUNTRY_NAME
+        ):
+            if len(value.encode("utf8")) != 2:
+                raise ValueError(
+                    "Country name must be a 2 character country code"
+                )
+
+        if len(value) == 0:
+            raise ValueError("Value cannot be an empty string")
+
+        # The appropriate ASN1 string type varies by OID and is defined across
+        # multiple RFCs including 2459, 3280, and 5280. In general UTF8String
+        # is preferred (2459), but 3280 and 5280 specify several OIDs with
+        # alternate types. This means when we see the sentinel value we need
+        # to look up whether the OID has a non-UTF8 type. If it does, set it
+        # to that. Otherwise, UTF8!
+        if _type == _SENTINEL:
+            _type = _NAMEOID_DEFAULT_TYPE.get(oid, _ASN1Type.UTF8String)
+
+        if not isinstance(_type, _ASN1Type):
+            raise TypeError("_type must be from the _ASN1Type enum")
+
+        self._oid = oid
+        self._value = value
+        self._type = _type
+
+    oid = utils.read_only_property("_oid")
+    value = utils.read_only_property("_value")
+
+    def __eq__(self, other):
+        if not isinstance(other, NameAttribute):
+            return NotImplemented
+
+        return (
+            self.oid == other.oid and
+            self.value == other.value
+        )
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash((self.oid, self.value))
+
+    def __repr__(self):
+        return "<NameAttribute(oid={0.oid}, value={0.value!r})>".format(self)
+
+
+class RelativeDistinguishedName(object):
+    def __init__(self, attributes):
+        attributes = list(attributes)
+        if not attributes:
+            raise ValueError("a relative distinguished name cannot be empty")
+        if not all(isinstance(x, NameAttribute) for x in attributes):
+            raise TypeError("attributes must be an iterable of NameAttribute")
+
+        # Keep list and frozenset to preserve attribute order where it matters
+        self._attributes = attributes
+        self._attribute_set = frozenset(attributes)
+
+        if len(self._attribute_set) != len(attributes):
+            raise ValueError("duplicate attributes are not allowed")
+
+    def get_attributes_for_oid(self, oid):
+        return [i for i in self if i.oid == oid]
+
+    def __eq__(self, other):
+        if not isinstance(other, RelativeDistinguishedName):
+            return NotImplemented
+
+        return self._attribute_set == other._attribute_set
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        return hash(self._attribute_set)
+
+    def __iter__(self):
+        return iter(self._attributes)
+
+    def __len__(self):
+        return len(self._attributes)
+
+    def __repr__(self):
+        return "<RelativeDistinguishedName({0!r})>".format(list(self))
+
+
+class Name(object):
+    def __init__(self, attributes):
+        attributes = list(attributes)
+        if all(isinstance(x, NameAttribute) for x in attributes):
+            self._attributes = [
+                RelativeDistinguishedName([x]) for x in attributes
+            ]
+        elif all(isinstance(x, RelativeDistinguishedName) for x in attributes):
+            self._attributes = attributes
+        else:
+            raise TypeError(
+                "attributes must be a list of NameAttribute"
+                " or a list RelativeDistinguishedName"
+            )
+
+    def get_attributes_for_oid(self, oid):
+        return [i for i in self if i.oid == oid]
+
+    @property
+    def rdns(self):
+        return self._attributes
+
+    def public_bytes(self, backend):
+        return backend.x509_name_bytes(self)
+
+    def __eq__(self, other):
+        if not isinstance(other, Name):
+            return NotImplemented
+
+        return self._attributes == other._attributes
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __hash__(self):
+        # TODO: this is relatively expensive, if this looks like a bottleneck
+        # for you, consider optimizing!
+        return hash(tuple(self._attributes))
+
+    def __iter__(self):
+        for rdn in self._attributes:
+            for ava in rdn:
+                yield ava
+
+    def __len__(self):
+        return sum(len(rdn) for rdn in self._attributes)
+
+    def __repr__(self):
+        return "<Name({0!r})>".format(list(self))

server/www/packages/packages-common/cryptography/x509/oid.py

@@ -0,0 +1,271 @@
+# This file is dual licensed under the terms of the Apache License, Version
+# 2.0, and the BSD License. See the LICENSE file in the root of this repository
+# for complete details.
+
+from __future__ import absolute_import, division, print_function
+
+from cryptography import utils
+from cryptography.hazmat.primitives import hashes
+
+
+class ObjectIdentifier(object):
+    def __init__(self, dotted_string):
+        self._dotted_string = dotted_string
+
+        nodes = self._dotted_string.split(".")
+        intnodes = []
+
+        # There must be at least 2 nodes, the first node must be 0..2, and
+        # if less than 2, the second node cannot have a value outside the
+        # range 0..39.  All nodes must be integers.
+        for node in nodes:
+            try:
+                intnodes.append(int(node, 0))
+            except ValueError:
+                raise ValueError(
+                    "Malformed OID: %s (non-integer nodes)" % (
+                        self._dotted_string))
+
+        if len(nodes) < 2:
+            raise ValueError(
+                "Malformed OID: %s (insufficient number of nodes)" % (
+                    self._dotted_string))
+
+        if intnodes[0] > 2:
+            raise ValueError(
+                "Malformed OID: %s (first node outside valid range)" % (
+                    self._dotted_string))
+
+        if intnodes[0] < 2 and intnodes[1] >= 40:
+            raise ValueError(
+                "Malformed OID: %s (second node outside valid range)" % (
+                    self._dotted_string))
+
+    def __eq__(self, other):
+        if not isinstance(other, ObjectIdentifier):
+            return NotImplemented
+
+        return self.dotted_string == other.dotted_string
+
+    def __ne__(self, other):
+        return not self == other
+
+    def __repr__(self):
+        return "<ObjectIdentifier(oid={0}, name={1})>".format(
+            self.dotted_string,
+            self._name
+        )
+
+    def __hash__(self):
+        return hash(self.dotted_string)
+
+    @property
+    def _name(self):
+        return _OID_NAMES.get(self, "Unknown OID")
+
+    dotted_string = utils.read_only_property("_dotted_string")
+
+
+class ExtensionOID(object):
+    SUBJECT_DIRECTORY_ATTRIBUTES = ObjectIdentifier("2.5.29.9")
+    SUBJECT_KEY_IDENTIFIER = ObjectIdentifier("2.5.29.14")
+    KEY_USAGE = ObjectIdentifier("2.5.29.15")
+    SUBJECT_ALTERNATIVE_NAME = ObjectIdentifier("2.5.29.17")
+    ISSUER_ALTERNATIVE_NAME = ObjectIdentifier("2.5.29.18")
+    BASIC_CONSTRAINTS = ObjectIdentifier("2.5.29.19")
+    NAME_CONSTRAINTS = ObjectIdentifier("2.5.29.30")
+    CRL_DISTRIBUTION_POINTS = ObjectIdentifier("2.5.29.31")
+    CERTIFICATE_POLICIES = ObjectIdentifier("2.5.29.32")
+    POLICY_MAPPINGS = ObjectIdentifier("2.5.29.33")
+    AUTHORITY_KEY_IDENTIFIER = ObjectIdentifier("2.5.29.35")
+    POLICY_CONSTRAINTS = ObjectIdentifier("2.5.29.36")
+    EXTENDED_KEY_USAGE = ObjectIdentifier("2.5.29.37")
+    FRESHEST_CRL = ObjectIdentifier("2.5.29.46")
+    INHIBIT_ANY_POLICY = ObjectIdentifier("2.5.29.54")
+    AUTHORITY_INFORMATION_ACCESS = ObjectIdentifier("1.3.6.1.5.5.7.1.1")
+    SUBJECT_INFORMATION_ACCESS = ObjectIdentifier("1.3.6.1.5.5.7.1.11")
+    OCSP_NO_CHECK = ObjectIdentifier("1.3.6.1.5.5.7.48.1.5")
+    TLS_FEATURE = ObjectIdentifier("1.3.6.1.5.5.7.1.24")
+    CRL_NUMBER = ObjectIdentifier("2.5.29.20")
+    DELTA_CRL_INDICATOR = ObjectIdentifier("2.5.29.27")
+    PRECERT_SIGNED_CERTIFICATE_TIMESTAMPS = (
+        ObjectIdentifier("1.3.6.1.4.1.11129.2.4.2")
+    )
+
+
+class CRLEntryExtensionOID(object):
+    CERTIFICATE_ISSUER = ObjectIdentifier("2.5.29.29")
+    CRL_REASON = ObjectIdentifier("2.5.29.21")
+    INVALIDITY_DATE = ObjectIdentifier("2.5.29.24")
+
+
+class NameOID(object):
+    COMMON_NAME = ObjectIdentifier("2.5.4.3")
+    COUNTRY_NAME = ObjectIdentifier("2.5.4.6")
+    LOCALITY_NAME = ObjectIdentifier("2.5.4.7")
+    STATE_OR_PROVINCE_NAME = ObjectIdentifier("2.5.4.8")
+    STREET_ADDRESS = ObjectIdentifier("2.5.4.9")
+    ORGANIZATION_NAME = ObjectIdentifier("2.5.4.10")
+    ORGANIZATIONAL_UNIT_NAME = ObjectIdentifier("2.5.4.11")
+    SERIAL_NUMBER = ObjectIdentifier("2.5.4.5")
+    SURNAME = ObjectIdentifier("2.5.4.4")
+    GIVEN_NAME = ObjectIdentifier("2.5.4.42")
+    TITLE = ObjectIdentifier("2.5.4.12")
+    GENERATION_QUALIFIER = ObjectIdentifier("2.5.4.44")
+    X500_UNIQUE_IDENTIFIER = ObjectIdentifier("2.5.4.45")
+    DN_QUALIFIER = ObjectIdentifier("2.5.4.46")
+    PSEUDONYM = ObjectIdentifier("2.5.4.65")
+    USER_ID = ObjectIdentifier("0.9.2342.19200300.100.1.1")
+    DOMAIN_COMPONENT = ObjectIdentifier("0.9.2342.19200300.100.1.25")
+    EMAIL_ADDRESS = ObjectIdentifier("1.2.840.113549.1.9.1")
+    JURISDICTION_COUNTRY_NAME = ObjectIdentifier("1.3.6.1.4.1.311.60.2.1.3")
+    JURISDICTION_LOCALITY_NAME = ObjectIdentifier("1.3.6.1.4.1.311.60.2.1.1")
+    JURISDICTION_STATE_OR_PROVINCE_NAME = ObjectIdentifier(
+        "1.3.6.1.4.1.311.60.2.1.2"
+    )
+    BUSINESS_CATEGORY = ObjectIdentifier("2.5.4.15")
+    POSTAL_ADDRESS = ObjectIdentifier("2.5.4.16")
+    POSTAL_CODE = ObjectIdentifier("2.5.4.17")
+
+
+class SignatureAlgorithmOID(object):
+    RSA_WITH_MD5 = ObjectIdentifier("1.2.840.113549.1.1.4")
+    RSA_WITH_SHA1 = ObjectIdentifier("1.2.840.113549.1.1.5")
+    # This is an alternate OID for RSA with SHA1 that is occasionally seen
+    _RSA_WITH_SHA1 = ObjectIdentifier("1.3.14.3.2.29")
+    RSA_WITH_SHA224 = ObjectIdentifier("1.2.840.113549.1.1.14")
+    RSA_WITH_SHA256 = ObjectIdentifier("1.2.840.113549.1.1.11")
+    RSA_WITH_SHA384 = ObjectIdentifier("1.2.840.113549.1.1.12")
+    RSA_WITH_SHA512 = ObjectIdentifier("1.2.840.113549.1.1.13")
+    RSASSA_PSS = ObjectIdentifier("1.2.840.113549.1.1.10")
+    ECDSA_WITH_SHA1 = ObjectIdentifier("1.2.840.10045.4.1")
+    ECDSA_WITH_SHA224 = ObjectIdentifier("1.2.840.10045.4.3.1")
+    ECDSA_WITH_SHA256 = ObjectIdentifier("1.2.840.10045.4.3.2")
+    ECDSA_WITH_SHA384 = ObjectIdentifier("1.2.840.10045.4.3.3")
+    ECDSA_WITH_SHA512 = ObjectIdentifier("1.2.840.10045.4.3.4")
+    DSA_WITH_SHA1 = ObjectIdentifier("1.2.840.10040.4.3")
+    DSA_WITH_SHA224 = ObjectIdentifier("2.16.840.1.101.3.4.3.1")
+    DSA_WITH_SHA256 = ObjectIdentifier("2.16.840.1.101.3.4.3.2")
+
+
+_SIG_OIDS_TO_HASH = {
+    SignatureAlgorithmOID.RSA_WITH_MD5: hashes.MD5(),
+    SignatureAlgorithmOID.RSA_WITH_SHA1: hashes.SHA1(),
+    SignatureAlgorithmOID._RSA_WITH_SHA1: hashes.SHA1(),
+    SignatureAlgorithmOID.RSA_WITH_SHA224: hashes.SHA224(),
+    SignatureAlgorithmOID.RSA_WITH_SHA256: hashes.SHA256(),
+    SignatureAlgorithmOID.RSA_WITH_SHA384: hashes.SHA384(),
+    SignatureAlgorithmOID.RSA_WITH_SHA512: hashes.SHA512(),
+    SignatureAlgorithmOID.ECDSA_WITH_SHA1: hashes.SHA1(),
+    SignatureAlgorithmOID.ECDSA_WITH_SHA224: hashes.SHA224(),
+    SignatureAlgorithmOID.ECDSA_WITH_SHA256: hashes.SHA256(),
+    SignatureAlgorithmOID.ECDSA_WITH_SHA384: hashes.SHA384(),
+    SignatureAlgorithmOID.ECDSA_WITH_SHA512: hashes.SHA512(),
+    SignatureAlgorithmOID.DSA_WITH_SHA1: hashes.SHA1(),
+    SignatureAlgorithmOID.DSA_WITH_SHA224: hashes.SHA224(),
+    SignatureAlgorithmOID.DSA_WITH_SHA256: hashes.SHA256()
+}
+
+
+class ExtendedKeyUsageOID(object):
+    SERVER_AUTH = ObjectIdentifier("1.3.6.1.5.5.7.3.1")
+    CLIENT_AUTH = ObjectIdentifier("1.3.6.1.5.5.7.3.2")
+    CODE_SIGNING = ObjectIdentifier("1.3.6.1.5.5.7.3.3")
+    EMAIL_PROTECTION = ObjectIdentifier("1.3.6.1.5.5.7.3.4")
+    TIME_STAMPING = ObjectIdentifier("1.3.6.1.5.5.7.3.8")
+    OCSP_SIGNING = ObjectIdentifier("1.3.6.1.5.5.7.3.9")
+    ANY_EXTENDED_KEY_USAGE = ObjectIdentifier("2.5.29.37.0")
+
+
+class AuthorityInformationAccessOID(object):
+    CA_ISSUERS = ObjectIdentifier("1.3.6.1.5.5.7.48.2")
+    OCSP = ObjectIdentifier("1.3.6.1.5.5.7.48.1")
+
+
+class CertificatePoliciesOID(object):
+    CPS_QUALIFIER = ObjectIdentifier("1.3.6.1.5.5.7.2.1")
+    CPS_USER_NOTICE = ObjectIdentifier("1.3.6.1.5.5.7.2.2")
+    ANY_POLICY = ObjectIdentifier("2.5.29.32.0")
+
+
+_OID_NAMES = {
+    NameOID.COMMON_NAME: "commonName",
+    NameOID.COUNTRY_NAME: "countryName",
+    NameOID.LOCALITY_NAME: "localityName",
+    NameOID.STATE_OR_PROVINCE_NAME: "stateOrProvinceName",
+    NameOID.STREET_ADDRESS: "streetAddress",
+    NameOID.ORGANIZATION_NAME: "organizationName",
+    NameOID.ORGANIZATIONAL_UNIT_NAME: "organizationalUnitName",
+    NameOID.SERIAL_NUMBER: "serialNumber",
+    NameOID.SURNAME: "surname",
+    NameOID.GIVEN_NAME: "givenName",
+    NameOID.TITLE: "title",
+    NameOID.GENERATION_QUALIFIER: "generationQualifier",
+    NameOID.X500_UNIQUE_IDENTIFIER: "x500UniqueIdentifier",
+    NameOID.DN_QUALIFIER: "dnQualifier",
+    NameOID.PSEUDONYM: "pseudonym",
+    NameOID.USER_ID: "userID",
+    NameOID.DOMAIN_COMPONENT: "domainComponent",
+    NameOID.EMAIL_ADDRESS: "emailAddress",
+    NameOID.JURISDICTION_COUNTRY_NAME: "jurisdictionCountryName",
+    NameOID.JURISDICTION_LOCALITY_NAME: "jurisdictionLocalityName",
+    NameOID.JURISDICTION_STATE_OR_PROVINCE_NAME: (
+        "jurisdictionStateOrProvinceName"
+    ),
+    NameOID.BUSINESS_CATEGORY: "businessCategory",
+    NameOID.POSTAL_ADDRESS: "postalAddress",
+    NameOID.POSTAL_CODE: "postalCode",
+
+    SignatureAlgorithmOID.RSA_WITH_MD5: "md5WithRSAEncryption",
+    SignatureAlgorithmOID.RSA_WITH_SHA1: "sha1WithRSAEncryption",
+    SignatureAlgorithmOID.RSA_WITH_SHA224: "sha224WithRSAEncryption",
+    SignatureAlgorithmOID.RSA_WITH_SHA256: "sha256WithRSAEncryption",
+    SignatureAlgorithmOID.RSA_WITH_SHA384: "sha384WithRSAEncryption",
+    SignatureAlgorithmOID.RSA_WITH_SHA512: "sha512WithRSAEncryption",
+    SignatureAlgorithmOID.RSASSA_PSS: "RSASSA-PSS",
+    SignatureAlgorithmOID.ECDSA_WITH_SHA1: "ecdsa-with-SHA1",
+    SignatureAlgorithmOID.ECDSA_WITH_SHA224: "ecdsa-with-SHA224",
+    SignatureAlgorithmOID.ECDSA_WITH_SHA256: "ecdsa-with-SHA256",
+    SignatureAlgorithmOID.ECDSA_WITH_SHA384: "ecdsa-with-SHA384",
+    SignatureAlgorithmOID.ECDSA_WITH_SHA512: "ecdsa-with-SHA512",
+    SignatureAlgorithmOID.DSA_WITH_SHA1: "dsa-with-sha1",
+    SignatureAlgorithmOID.DSA_WITH_SHA224: "dsa-with-sha224",
+    SignatureAlgorithmOID.DSA_WITH_SHA256: "dsa-with-sha256",
+    ExtendedKeyUsageOID.SERVER_AUTH: "serverAuth",
+    ExtendedKeyUsageOID.CLIENT_AUTH: "clientAuth",
+    ExtendedKeyUsageOID.CODE_SIGNING: "codeSigning",
+    ExtendedKeyUsageOID.EMAIL_PROTECTION: "emailProtection",
+    ExtendedKeyUsageOID.TIME_STAMPING: "timeStamping",
+    ExtendedKeyUsageOID.OCSP_SIGNING: "OCSPSigning",
+    ExtensionOID.SUBJECT_DIRECTORY_ATTRIBUTES: "subjectDirectoryAttributes",
+    ExtensionOID.SUBJECT_KEY_IDENTIFIER: "subjectKeyIdentifier",
+    ExtensionOID.KEY_USAGE: "keyUsage",
+    ExtensionOID.SUBJECT_ALTERNATIVE_NAME: "subjectAltName",
+    ExtensionOID.ISSUER_ALTERNATIVE_NAME: "issuerAltName",
+    ExtensionOID.BASIC_CONSTRAINTS: "basicConstraints",
+    ExtensionOID.PRECERT_SIGNED_CERTIFICATE_TIMESTAMPS: (
+        "signedCertificateTimestampList"
+    ),
+    CRLEntryExtensionOID.CRL_REASON: "cRLReason",
+    CRLEntryExtensionOID.INVALIDITY_DATE: "invalidityDate",
+    CRLEntryExtensionOID.CERTIFICATE_ISSUER: "certificateIssuer",
+    ExtensionOID.NAME_CONSTRAINTS: "nameConstraints",
+    ExtensionOID.CRL_DISTRIBUTION_POINTS: "cRLDistributionPoints",
+    ExtensionOID.CERTIFICATE_POLICIES: "certificatePolicies",
+    ExtensionOID.POLICY_MAPPINGS: "policyMappings",
+    ExtensionOID.AUTHORITY_KEY_IDENTIFIER: "authorityKeyIdentifier",
+    ExtensionOID.POLICY_CONSTRAINTS: "policyConstraints",
+    ExtensionOID.EXTENDED_KEY_USAGE: "extendedKeyUsage",
+    ExtensionOID.FRESHEST_CRL: "freshestCRL",
+    ExtensionOID.INHIBIT_ANY_POLICY: "inhibitAnyPolicy",
+    ExtensionOID.AUTHORITY_INFORMATION_ACCESS: "authorityInfoAccess",
+    ExtensionOID.SUBJECT_INFORMATION_ACCESS: "subjectInfoAccess",
+    ExtensionOID.OCSP_NO_CHECK: "OCSPNoCheck",
+    ExtensionOID.CRL_NUMBER: "cRLNumber",
+    ExtensionOID.DELTA_CRL_INDICATOR: "deltaCRLIndicator",
+    ExtensionOID.TLS_FEATURE: "TLSFeature",
+    AuthorityInformationAccessOID.OCSP: "OCSP",
+    AuthorityInformationAccessOID.CA_ISSUERS: "caIssuers",
+    CertificatePoliciesOID.CPS_QUALIFIER: "id-qt-cps",
+    CertificatePoliciesOID.CPS_USER_NOTICE: "id-qt-unotice",
+}

server/www/packages/packages-common/mako/__init__.py

@@ -5,4 +5,4 @@
 # the MIT License: http://www.opensource.org/licenses/mit-license.php
 
 
-__version__ = '1.0.6'
+__version__ = '1.0.7'

server/www/packages/packages-common/mako/_ast_util.py

@@ -187,7 +187,7 @@ def iter_fields(node):
 
 
 def get_fields(node):
-    """Like `iter_fiels` but returns a dict."""
+    """Like `iter_fields` but returns a dict."""
     return dict(iter_fields(node))
 
 

server/www/packages/packages-common/mako/cache.py

@@ -95,7 +95,7 @@ class Cache(object):
             **self._get_cache_kw(kw, context))
 
     def set(self, key, value, **kw):
-        """Place a value in the cache.
+        r"""Place a value in the cache.
 
         :param key: the value's key.
         :param value: the value.
@@ -113,7 +113,7 @@ class Cache(object):
     """
 
     def get(self, key, **kw):
-        """Retrieve a value from the cache.
+        r"""Retrieve a value from the cache.
 
         :param key: the value's key.
         :param \**kw: cache configuration arguments.  The
@@ -125,7 +125,7 @@ class Cache(object):
         return self.impl.get(key, **self._get_cache_kw(kw, None))
 
     def invalidate(self, key, **kw):
-        """Invalidate a value in the cache.
+        r"""Invalidate a value in the cache.
 
         :param key: the value's key.
         :param \**kw: cache configuration arguments.  The
@@ -194,7 +194,7 @@ class CacheImpl(object):
     """
 
     def get_or_create(self, key, creation_function, **kw):
-        """Retrieve a value from the cache, using the given creation function
+        r"""Retrieve a value from the cache, using the given creation function
         to generate a new value.
 
         This function *must* return a value, either from
@@ -212,7 +212,7 @@ class CacheImpl(object):
         raise NotImplementedError()
 
     def set(self, key, value, **kw):
-        """Place a value in the cache.
+        r"""Place a value in the cache.
 
         :param key: the value's key.
         :param value: the value.
@@ -222,7 +222,7 @@ class CacheImpl(object):
         raise NotImplementedError()
 
     def get(self, key, **kw):
-        """Retrieve a value from the cache.
+        r"""Retrieve a value from the cache.
 
         :param key: the value's key.
         :param \**kw: cache configuration arguments.
@@ -231,7 +231,7 @@ class CacheImpl(object):
         raise NotImplementedError()
 
     def invalidate(self, key, **kw):
-        """Invalidate a value in the cache.
+        r"""Invalidate a value in the cache.
 
         :param key: the value's key.
         :param \**kw: cache configuration arguments.

server/www/packages/packages-common/mako/cmd.py

@@ -58,7 +58,7 @@ def cmdline(argv=None):
 
     kw = dict([varsplit(var) for var in options.var])
     try:
-        print(template.render(**kw))
+        sys.stdout.write(template.render(**kw))
     except:
         _exit()
 

server/www/packages/packages-common/mako/ext/extract.py

@@ -68,7 +68,7 @@ class MessageExtractor(object):
             else:
                 continue
 
-            # Comments don't apply unless they immediately preceed the message
+            # Comments don't apply unless they immediately precede the message
             if translator_comments and \
                     translator_comments[-1][0] < node.lineno - 1:
                 translator_comments = []

server/www/packages/packages-common/mako/parsetree.py

@@ -258,7 +258,7 @@ class Tag(compat.with_metaclass(_TagMeta, Node)):
 
     def __init__(self, keyword, attributes, expressions,
                  nonexpressions, required, **kwargs):
-        """construct a new Tag instance.
+        r"""construct a new Tag instance.
 
         this constructor not called directly, and is only called
         by subclasses.

server/www/packages/packages-common/mako/template.py

@@ -21,7 +21,7 @@ import weakref
 
 class Template(object):
 
-    """Represents a compiled template.
+    r"""Represents a compiled template.
 
     :class:`.Template` includes a reference to the original
     template source (via the :attr:`.source` attribute)

server/www/packages/packages-common/pymysql/__init__.py

@@ -35,7 +35,11 @@ from .times import (
     DateFromTicks, TimeFromTicks, TimestampFromTicks)
 
 
-VERSION = (0, 7, 11, None)
+VERSION = (0, 9, 2, None)
+if VERSION[3] is not None:
+    VERSION_STRING = "%d.%d.%d_%s" % VERSION
+else:
+    VERSION_STRING = "%d.%d.%d" % VERSION[:3]
 threadsafety = 1
 apilevel = "2.0"
 paramstyle = "pyformat"
@@ -96,12 +100,15 @@ del _orig_conn
 
 
 def get_client_info():  # for MySQLdb compatibility
-    return '.'.join(map(str, VERSION))
+    version = VERSION
+    if VERSION[3] is None:
+        version = VERSION[:3]
+    return '.'.join(map(str, version))
 
 connect = Connection = Connect
 
 # we include a doctored version_info here for MySQLdb compatibility
-version_info = (1,2,6,"final",0)
+version_info = (1, 3, 12, "final", 0)
 
 NULL = "NULL"
 
@@ -113,7 +120,7 @@ def thread_safe():
 def install_as_MySQLdb():
     """
     After this function is called, any application that imports MySQLdb or
-    _mysql will unwittingly actually use
+    _mysql will unwittingly actually use pymysql.
     """
     sys.modules["MySQLdb"] = sys.modules["_mysql"] = sys.modules["pymysql"]
 

server/www/packages/packages-common/pymysql/constants/CLIENT.py

@@ -18,14 +18,14 @@ MULTI_STATEMENTS = 1 << 16
 MULTI_RESULTS = 1 << 17
 PS_MULTI_RESULTS = 1 << 18
 PLUGIN_AUTH = 1 << 19
+CONNECT_ATTRS = 1 << 20
 PLUGIN_AUTH_LENENC_CLIENT_DATA = 1 << 21
 CAPABILITIES = (
     LONG_PASSWORD | LONG_FLAG | PROTOCOL_41 | TRANSACTIONS
-    | SECURE_CONNECTION | MULTI_STATEMENTS | MULTI_RESULTS
-    | PLUGIN_AUTH | PLUGIN_AUTH_LENENC_CLIENT_DATA)
+    | SECURE_CONNECTION | MULTI_RESULTS
+    | PLUGIN_AUTH | PLUGIN_AUTH_LENENC_CLIENT_DATA | CONNECT_ATTRS)
 
 # Not done yet
-CONNECT_ATTRS = 1 << 20
 HANDLE_EXPIRED_PASSWORDS = 1 << 22
 SESSION_TRACK = 1 << 23
 DEPRECATE_EOF = 1 << 24

server/www/packages/packages-common/pymysql/constants/ER.py

@@ -470,3 +470,6 @@ USERNAME = 1466
 HOSTNAME = 1467
 WRONG_STRING_LENGTH = 1468
 ERROR_LAST = 1468
+
+# https://github.com/PyMySQL/PyMySQL/issues/607
+CONSTRAINT_FAILED = 4025

server/www/packages/packages-common/pymysql/converters.py

@@ -90,9 +90,14 @@ if PY2:
         value = value.replace('"', '\\"')
         return value
 
-    def escape_bytes(value, mapping=None):
+    def escape_bytes_prefixed(value, mapping=None):
         assert isinstance(value, (bytes, bytearray))
         return b"_binary'%s'" % escape_string(value)
+
+    def escape_bytes(value, mapping=None):
+        assert isinstance(value, (bytes, bytearray))
+        return b"'%s'" % escape_string(value)
+
 else:
     escape_string = _escape_unicode
 
@@ -102,9 +107,12 @@ else:
     # We can escape special chars and surrogateescape at once.
     _escape_bytes_table = _escape_table + [chr(i) for i in range(0xdc80, 0xdd00)]
 
-    def escape_bytes(value, mapping=None):
+    def escape_bytes_prefixed(value, mapping=None):
         return "_binary'%s'" % value.decode('latin1').translate(_escape_bytes_table)
 
+    def escape_bytes(value, mapping=None):
+        return "'%s'" % value.decode('latin1').translate(_escape_bytes_table)
+
 
 def escape_unicode(value, mapping=None):
     return u"'%s'" % _escape_unicode(value)
@@ -211,7 +219,7 @@ def convert_timedelta(obj):
 
     m = TIMEDELTA_RE.match(obj)
     if not m:
-        return None
+        return obj
 
     try:
         groups = list(m.groups())
@@ -227,7 +235,7 @@ def convert_timedelta(obj):
             ) * negate
         return tdelta
     except ValueError:
-        return None
+        return obj
 
 TIME_RE = re.compile(r"(\d{1,2}):(\d{1,2}):(\d{1,2})(?:.(\d{1,6}))?")
 
@@ -259,7 +267,7 @@ def convert_time(obj):
 
     m = TIME_RE.match(obj)
     if not m:
-        return None
+        return obj
 
     try:
         groups = list(m.groups())
@@ -268,7 +276,7 @@ def convert_time(obj):
         return datetime.time(hour=int(hours), minute=int(minutes),
                              second=int(seconds), microsecond=int(microseconds))
     except ValueError:
-        return None
+        return obj
 
 
 def convert_date(obj):
@@ -290,7 +298,7 @@ def convert_date(obj):
     try:
         return datetime.date(*[ int(x) for x in obj.split('-', 2) ])
     except ValueError:
-        return None
+        return obj
 
 
 def convert_mysql_timestamp(timestamp):
@@ -325,7 +333,7 @@ def convert_mysql_timestamp(timestamp):
     try:
         return datetime.datetime(year, month, day, hour, minute, second)
     except ValueError:
-        return None
+        return timestamp
 
 def convert_set(s):
     if isinstance(s, (bytes, bytearray)):
@@ -373,7 +381,6 @@ encoders = {
     set: escape_sequence,
     frozenset: escape_sequence,
     dict: escape_dict,
-    bytearray: escape_bytes,
     type(None): escape_None,
     datetime.date: escape_date,
     datetime.datetime: escape_datetime,

server/www/packages/packages-common/pymysql/cursors.py

@@ -12,7 +12,7 @@ from . import err
 #: executemany only suports simple bulk insert.
 #: You can use it to load large dataset.
 RE_INSERT_VALUES = re.compile(
-    r"\s*((?:INSERT|REPLACE)\s.+\sVALUES?\s+)" +
+    r"\s*((?:INSERT|REPLACE)\b.+\bVALUES?\s*)" +
     r"(\(\s*(?:%s|%\(.+\)s)\s*(?:,\s*(?:%s|%\(.+\)s)\s*)*\))" +
     r"(\s*(?:ON DUPLICATE.*)?);?\s*\Z",
     re.IGNORECASE | re.DOTALL)
@@ -21,6 +21,12 @@ RE_INSERT_VALUES = re.compile(
 class Cursor(object):
     """
     This is the object you use to interact with the database.
+
+    Do not create an instance of a Cursor yourself. Call
+    connections.Connection.cursor().
+
+    See `Cursor <https://www.python.org/dev/peps/pep-0249/#cursor-objects>`_ in
+    the specification.
     """
 
     #: Max statement size which :meth:`executemany` generates.
@@ -32,10 +38,6 @@ class Cursor(object):
     _defer_warnings = False
 
     def __init__(self, connection):
-        """
-        Do not create an instance of a Cursor yourself. Call
-        connections.Connection.cursor().
-        """
         self.connection = connection
         self.description = None
         self.rownumber = 0
@@ -95,6 +97,8 @@ class Cursor(object):
             return None
         if not current_result.has_next:
             return None
+        self._result = None
+        self._clear_result()
         conn.next_result(unbuffered=unbuffered)
         self._do_get_result()
         return True
@@ -260,9 +264,10 @@ class Cursor(object):
         disconnected.
         """
         conn = self._get_db()
-        for index, arg in enumerate(args):
-            q = "SET @_%s_%d=%s" % (procname, index, conn.escape(arg))
-            self._query(q)
+        if args:
+            fmt = '@_{0}_%d=%s'.format(procname)
+            self._query('SET %s' % ','.join(fmt % (index, conn.escape(arg))
+                                            for index, arg in enumerate(args)))
             self.nextset()
 
         q = "CALL %s(%s)" % (procname,
@@ -319,14 +324,23 @@ class Cursor(object):
     def _query(self, q):
         conn = self._get_db()
         self._last_executed = q
+        self._clear_result()
         conn.query(q)
         self._do_get_result()
         return self.rowcount
 
+    def _clear_result(self):
+        self.rownumber = 0
+        self._result = None
+
+        self.rowcount = 0
+        self.description = None
+        self.lastrowid = None
+        self._rows = None
+
     def _do_get_result(self):
         conn = self._get_db()
 
-        self.rownumber = 0
         self._result = result = conn._result
 
         self.rowcount = result.affected_rows
@@ -432,9 +446,12 @@ class SSCursor(Cursor):
         finally:
             self.connection = None
 
+    __del__ = close
+
     def _query(self, q):
         conn = self._get_db()
         self._last_executed = q
+        self._clear_result()
         conn.query(q, unbuffered=True)
         self._do_get_result()
         return self.rowcount

server/www/packages/packages-common/pymysql/err.py

@@ -78,7 +78,9 @@ _map_error(ProgrammingError, ER.DB_CREATE_EXISTS, ER.SYNTAX_ERROR,
            ER.PARSE_ERROR, ER.NO_SUCH_TABLE, ER.WRONG_DB_NAME,
            ER.WRONG_TABLE_NAME, ER.FIELD_SPECIFIED_TWICE,
            ER.INVALID_GROUP_FUNC_USE, ER.UNSUPPORTED_EXTENSION,
-           ER.TABLE_MUST_HAVE_COLUMNS, ER.CANT_DO_THIS_DURING_AN_TRANSACTION)
+           ER.TABLE_MUST_HAVE_COLUMNS, ER.CANT_DO_THIS_DURING_AN_TRANSACTION,
+           ER.WRONG_DB_NAME, ER.WRONG_COLUMN_NAME,
+           )
 _map_error(DataError, ER.WARN_DATA_TRUNCATED, ER.WARN_NULL_TO_NOTNULL,
            ER.WARN_DATA_OUT_OF_RANGE, ER.NO_DEFAULT, ER.PRIMARY_CANT_HAVE_NULL,
            ER.DATA_TOO_LONG, ER.DATETIME_FUNCTION_OVERFLOW)
@@ -89,7 +91,7 @@ _map_error(NotSupportedError, ER.WARNING_NOT_COMPLETE_ROLLBACK,
            ER.NOT_SUPPORTED_YET, ER.FEATURE_DISABLED, ER.UNKNOWN_STORAGE_ENGINE)
 _map_error(OperationalError, ER.DBACCESS_DENIED_ERROR, ER.ACCESS_DENIED_ERROR,
            ER.CON_COUNT_ERROR, ER.TABLEACCESS_DENIED_ERROR,
-           ER.COLUMNACCESS_DENIED_ERROR)
+           ER.COLUMNACCESS_DENIED_ERROR, ER.CONSTRAINT_FAILED, ER.LOCK_DEADLOCK)
 
 
 del _map_error, ER

server/www/packages/packages-common/pymysql/optionfile.py

@@ -7,6 +7,9 @@ else:
 
 
 class Parser(configparser.RawConfigParser):
+    def __init__(self, **kwargs):
+        kwargs['allow_no_value'] = True
+        configparser.RawConfigParser.__init__(self, **kwargs)
 
     def __remove_quotes(self, value):
         quotes = ["'", "\""]

server/www/packages/packages-common/pymysql/protocol.py

@@ -0,0 +1,341 @@
+# Python implementation of low level MySQL client-server protocol
+# http://dev.mysql.com/doc/internals/en/client-server-protocol.html
+
+from __future__ import print_function
+from .charset import MBLENGTH
+from ._compat import PY2, range_type
+from .constants import FIELD_TYPE, SERVER_STATUS
+from . import err
+from .util import byte2int
+
+import struct
+import sys
+
+
+DEBUG = False
+
+NULL_COLUMN = 251
+UNSIGNED_CHAR_COLUMN = 251
+UNSIGNED_SHORT_COLUMN = 252
+UNSIGNED_INT24_COLUMN = 253
+UNSIGNED_INT64_COLUMN = 254
+
+
+def dump_packet(data):  # pragma: no cover
+    def printable(data):
+        if 32 <= byte2int(data) < 127:
+            if isinstance(data, int):
+                return chr(data)
+            return data
+        return '.'
+
+    try:
+        print("packet length:", len(data))
+        for i in range(1, 7):
+            f = sys._getframe(i)
+            print("call[%d]: %s (line %d)" % (i, f.f_code.co_name, f.f_lineno))
+        print("-" * 66)
+    except ValueError:
+        pass
+    dump_data = [data[i:i+16] for i in range_type(0, min(len(data), 256), 16)]
+    for d in dump_data:
+        print(' '.join("{:02X}".format(byte2int(x)) for x in d) +
+              '   ' * (16 - len(d)) + ' ' * 2 +
+              ''.join(printable(x) for x in d))
+    print("-" * 66)
+    print()
+
+
+class MysqlPacket(object):
+    """Representation of a MySQL response packet.
+
+    Provides an interface for reading/parsing the packet results.
+    """
+    __slots__ = ('_position', '_data')
+
+    def __init__(self, data, encoding):
+        self._position = 0
+        self._data = data
+
+    def get_all_data(self):
+        return self._data
+
+    def read(self, size):
+        """Read the first 'size' bytes in packet and advance cursor past them."""
+        result = self._data[self._position:(self._position+size)]
+        if len(result) != size:
+            error = ('Result length not requested length:\n'
+                     'Expected=%s.  Actual=%s.  Position: %s.  Data Length: %s'
+                     % (size, len(result), self._position, len(self._data)))
+            if DEBUG:
+                print(error)
+                self.dump()
+            raise AssertionError(error)
+        self._position += size
+        return result
+
+    def read_all(self):
+        """Read all remaining data in the packet.
+
+        (Subsequent read() will return errors.)
+        """
+        result = self._data[self._position:]
+        self._position = None  # ensure no subsequent read()
+        return result
+
+    def advance(self, length):
+        """Advance the cursor in data buffer 'length' bytes."""
+        new_position = self._position + length
+        if new_position < 0 or new_position > len(self._data):
+            raise Exception('Invalid advance amount (%s) for cursor.  '
+                            'Position=%s' % (length, new_position))
+        self._position = new_position
+
+    def rewind(self, position=0):
+        """Set the position of the data buffer cursor to 'position'."""
+        if position < 0 or position > len(self._data):
+            raise Exception("Invalid position to rewind cursor to: %s." % position)
+        self._position = position
+
+    def get_bytes(self, position, length=1):
+        """Get 'length' bytes starting at 'position'.
+
+        Position is start of payload (first four packet header bytes are not
+        included) starting at index '0'.
+
+        No error checking is done.  If requesting outside end of buffer
+        an empty string (or string shorter than 'length') may be returned!
+        """
+        return self._data[position:(position+length)]
+
+    if PY2:
+        def read_uint8(self):
+            result = ord(self._data[self._position])
+            self._position += 1
+            return result
+    else:
+        def read_uint8(self):
+            result = self._data[self._position]
+            self._position += 1
+            return result
+
+    def read_uint16(self):
+        result = struct.unpack_from('<H', self._data, self._position)[0]
+        self._position += 2
+        return result
+
+    def read_uint24(self):
+        low, high = struct.unpack_from('<HB', self._data, self._position)
+        self._position += 3
+        return low + (high << 16)
+
+    def read_uint32(self):
+        result = struct.unpack_from('<I', self._data, self._position)[0]
+        self._position += 4
+        return result
+
+    def read_uint64(self):
+        result = struct.unpack_from('<Q', self._data, self._position)[0]
+        self._position += 8
+        return result
+
+    def read_string(self):
+        end_pos = self._data.find(b'\0', self._position)
+        if end_pos < 0:
+            return None
+        result = self._data[self._position:end_pos]
+        self._position = end_pos + 1
+        return result
+
+    def read_length_encoded_integer(self):
+        """Read a 'Length Coded Binary' number from the data buffer.
+
+        Length coded numbers can be anywhere from 1 to 9 bytes depending
+        on the value of the first byte.
+        """
+        c = self.read_uint8()
+        if c == NULL_COLUMN:
+            return None
+        if c < UNSIGNED_CHAR_COLUMN:
+            return c
+        elif c == UNSIGNED_SHORT_COLUMN:
+            return self.read_uint16()
+        elif c == UNSIGNED_INT24_COLUMN:
+            return self.read_uint24()
+        elif c == UNSIGNED_INT64_COLUMN:
+            return self.read_uint64()
+
+    def read_length_coded_string(self):
+        """Read a 'Length Coded String' from the data buffer.
+
+        A 'Length Coded String' consists first of a length coded
+        (unsigned, positive) integer represented in 1-9 bytes followed by
+        that many bytes of binary data.  (For example "cat" would be "3cat".)
+        """
+        length = self.read_length_encoded_integer()
+        if length is None:
+            return None
+        return self.read(length)
+
+    def read_struct(self, fmt):
+        s = struct.Struct(fmt)
+        result = s.unpack_from(self._data, self._position)
+        self._position += s.size
+        return result
+
+    def is_ok_packet(self):
+        # https://dev.mysql.com/doc/internals/en/packet-OK_Packet.html
+        return self._data[0:1] == b'\0' and len(self._data) >= 7
+
+    def is_eof_packet(self):
+        # http://dev.mysql.com/doc/internals/en/generic-response-packets.html#packet-EOF_Packet
+        # Caution: \xFE may be LengthEncodedInteger.
+        # If \xFE is LengthEncodedInteger header, 8bytes followed.
+        return self._data[0:1] == b'\xfe' and len(self._data) < 9
+
+    def is_auth_switch_request(self):
+        # http://dev.mysql.com/doc/internals/en/connection-phase-packets.html#packet-Protocol::AuthSwitchRequest
+        return self._data[0:1] == b'\xfe'
+
+    def is_extra_auth_data(self):
+        # https://dev.mysql.com/doc/internals/en/successful-authentication.html
+        return self._data[0:1] == b'\x01'
+
+    def is_resultset_packet(self):
+        field_count = ord(self._data[0:1])
+        return 1 <= field_count <= 250
+
+    def is_load_local_packet(self):
+        return self._data[0:1] == b'\xfb'
+
+    def is_error_packet(self):
+        return self._data[0:1] == b'\xff'
+
+    def check_error(self):
+        if self.is_error_packet():
+            self.rewind()
+            self.advance(1)  # field_count == error (we already know that)
+            errno = self.read_uint16()
+            if DEBUG: print("errno =", errno)
+            err.raise_mysql_exception(self._data)
+
+    def dump(self):
+        dump_packet(self._data)
+
+
+class FieldDescriptorPacket(MysqlPacket):
+    """A MysqlPacket that represents a specific column's metadata in the result.
+
+    Parsing is automatically done and the results are exported via public
+    attributes on the class such as: db, table_name, name, length, type_code.
+    """
+
+    def __init__(self, data, encoding):
+        MysqlPacket.__init__(self, data, encoding)
+        self._parse_field_descriptor(encoding)
+
+    def _parse_field_descriptor(self, encoding):
+        """Parse the 'Field Descriptor' (Metadata) packet.
+
+        This is compatible with MySQL 4.1+ (not compatible with MySQL 4.0).
+        """
+        self.catalog = self.read_length_coded_string()
+        self.db = self.read_length_coded_string()
+        self.table_name = self.read_length_coded_string().decode(encoding)
+        self.org_table = self.read_length_coded_string().decode(encoding)
+        self.name = self.read_length_coded_string().decode(encoding)
+        self.org_name = self.read_length_coded_string().decode(encoding)
+        self.charsetnr, self.length, self.type_code, self.flags, self.scale = (
+            self.read_struct('<xHIBHBxx'))
+        # 'default' is a length coded binary and is still in the buffer?
+        # not used for normal result sets...
+
+    def description(self):
+        """Provides a 7-item tuple compatible with the Python PEP249 DB Spec."""
+        return (
+            self.name,
+            self.type_code,
+            None,  # TODO: display_length; should this be self.length?
+            self.get_column_length(),  # 'internal_size'
+            self.get_column_length(),  # 'precision'  # TODO: why!?!?
+            self.scale,
+            self.flags % 2 == 0)
+
+    def get_column_length(self):
+        if self.type_code == FIELD_TYPE.VAR_STRING:
+            mblen = MBLENGTH.get(self.charsetnr, 1)
+            return self.length // mblen
+        return self.length
+
+    def __str__(self):
+        return ('%s %r.%r.%r, type=%s, flags=%x'
+                % (self.__class__, self.db, self.table_name, self.name,
+                   self.type_code, self.flags))
+
+
+class OKPacketWrapper(object):
+    """
+    OK Packet Wrapper. It uses an existing packet object, and wraps
+    around it, exposing useful variables while still providing access
+    to the original packet objects variables and methods.
+    """
+
+    def __init__(self, from_packet):
+        if not from_packet.is_ok_packet():
+            raise ValueError('Cannot create ' + str(self.__class__.__name__) +
+                             ' object from invalid packet type')
+
+        self.packet = from_packet
+        self.packet.advance(1)
+
+        self.affected_rows = self.packet.read_length_encoded_integer()
+        self.insert_id = self.packet.read_length_encoded_integer()
+        self.server_status, self.warning_count = self.read_struct('<HH')
+        self.message = self.packet.read_all()
+        self.has_next = self.server_status & SERVER_STATUS.SERVER_MORE_RESULTS_EXISTS
+
+    def __getattr__(self, key):
+        return getattr(self.packet, key)
+
+
+class EOFPacketWrapper(object):
+    """
+    EOF Packet Wrapper. It uses an existing packet object, and wraps
+    around it, exposing useful variables while still providing access
+    to the original packet objects variables and methods.
+    """
+
+    def __init__(self, from_packet):
+        if not from_packet.is_eof_packet():
+            raise ValueError(
+                "Cannot create '{0}' object from invalid packet type".format(
+                    self.__class__))
+
+        self.packet = from_packet
+        self.warning_count, self.server_status = self.packet.read_struct('<xhh')
+        if DEBUG: print("server_status=", self.server_status)
+        self.has_next = self.server_status & SERVER_STATUS.SERVER_MORE_RESULTS_EXISTS
+
+    def __getattr__(self, key):
+        return getattr(self.packet, key)
+
+
+class LoadLocalPacketWrapper(object):
+    """
+    Load Local Packet Wrapper. It uses an existing packet object, and wraps
+    around it, exposing useful variables while still providing access
+    to the original packet objects variables and methods.
+    """
+
+    def __init__(self, from_packet):
+        if not from_packet.is_load_local_packet():
+            raise ValueError(
+                "Cannot create '{0}' object from invalid packet type".format(
+                    self.__class__))
+
+        self.packet = from_packet
+        self.filename = self.packet.get_all_data()[1:]
+        if DEBUG: print("filename=", self.filename)
+
+    def __getattr__(self, key):
+        return getattr(self.packet, key)

server/www/packages/packages-common/qrcode/LUT.py

@@ -0,0 +1,50 @@
+# Store all kinds of lookup table.
+
+
+# # generate rsPoly lookup table.
+
+# from qrcode import base
+
+# def create_bytes(rs_blocks):
+#     for r in range(len(rs_blocks)):
+#         dcCount = rs_blocks[r].data_count
+#         ecCount = rs_blocks[r].total_count - dcCount
+#         rsPoly = base.Polynomial([1], 0)
+#         for i in range(ecCount):
+#             rsPoly = rsPoly * base.Polynomial([1, base.gexp(i)], 0)
+#         return ecCount, rsPoly
+
+# rsPoly_LUT = {}
+# for version in range(1,41):
+#     for error_correction in range(4):
+#         rs_blocks_list = base.rs_blocks(version, error_correction)
+#         ecCount, rsPoly = create_bytes(rs_blocks_list)
+#         rsPoly_LUT[ecCount]=rsPoly.num
+# print(rsPoly_LUT)
+
+# Result. Usage: input: ecCount, output: Polynomial.num
+# e.g. rsPoly = base.Polynomial(LUT.rsPoly_LUT[ecCount], 0)
+rsPoly_LUT = {
+    7:  [1, 127, 122, 154, 164, 11, 68, 117],
+    10: [1, 216, 194, 159, 111, 199, 94, 95, 113, 157, 193],
+    13: [1, 137, 73, 227, 17, 177, 17, 52, 13, 46, 43, 83, 132, 120],
+    15: [1, 29, 196, 111, 163, 112, 74, 10, 105, 105, 139, 132, 151,
+        32, 134, 26],
+    16: [1, 59, 13, 104, 189, 68, 209, 30, 8, 163, 65, 41, 229, 98, 50, 36, 59],
+    17: [1, 119, 66, 83, 120, 119, 22, 197, 83, 249, 41, 143, 134, 85, 53, 125,
+        99, 79],
+    18: [1, 239, 251, 183, 113, 149, 175, 199, 215, 240, 220, 73, 82, 173, 75,
+        32, 67, 217, 146],
+    20: [1, 152, 185, 240, 5, 111, 99, 6, 220, 112, 150, 69, 36, 187, 22, 228,
+        198, 121, 121, 165, 174],
+    22: [1, 89, 179, 131, 176, 182, 244, 19, 189, 69, 40, 28, 137, 29, 123, 67,
+        253, 86, 218, 230, 26, 145, 245],
+    24: [1, 122, 118, 169, 70, 178, 237, 216, 102, 115, 150, 229, 73, 130, 72,
+        61, 43, 206, 1, 237, 247, 127, 217, 144, 117],
+    26: [1, 246, 51, 183, 4, 136, 98, 199, 152, 77, 56, 206, 24, 145, 40, 209,
+        117, 233, 42, 135, 68, 70, 144, 146, 77, 43, 94],
+    28: [1, 252, 9, 28, 13, 18, 251, 208, 150, 103, 174, 100, 41, 167, 12, 247,
+        56, 117, 119, 233, 127, 181, 100, 121, 147, 176, 74, 58, 197],
+    30: [1, 212, 246, 77, 73, 195, 192, 75, 98, 5, 70, 103, 177, 22, 217, 138,
+        51, 181, 246, 72, 25, 18, 46, 228, 74, 216, 195, 11, 106, 130, 150]
+              }

server/www/packages/packages-common/qrcode/base.py

@@ -288,16 +288,13 @@ class Polynomial:
         if not num:  # pragma: no cover
             raise Exception("%s/%s" % (len(num), shift))
 
-        offset = 0
-
-        for item in num:
-            if item != 0:
+        for offset in range(len(num)):
+            if num[offset] != 0:
                 break
+        else:
             offset += 1
 
-        self.num = [0] * (len(num) - offset + shift)
-        for i in range(len(num) - offset):
-            self.num[i] = num[i + offset]
+        self.num = num[offset:] + [0] * shift
 
     def __getitem__(self, index):
         return self.num[index]
@@ -324,8 +321,6 @@ class Polynomial:
 
         ratio = glog(self[0]) - glog(other[0])
 
-        num = self[:]
-
         num = [
             item ^ gexp(glog(other_item) + ratio)
             for item, other_item in zip(self, other)]

server/www/packages/packages-common/qrcode/console_scripts.py

@@ -30,8 +30,12 @@ error_correction = {
 }
 
 
-def main(args=sys.argv[1:]):
-    parser = optparse.OptionParser(usage=__doc__.strip())
+def main(args=None):
+    if args is None:
+        args = sys.argv[1:]
+    from pkg_resources import get_distribution
+    version = get_distribution('qrcode').version
+    parser = optparse.OptionParser(usage=__doc__.strip(), version=version)
     parser.add_option(
         "--factory", help="Full python path to the image factory class to "
         "create the image with. You can use the following shortcuts to the "

server/www/packages/packages-common/qrcode/image/pil.py

@@ -18,8 +18,8 @@ class PilImage(qrcode.image.base.BaseImage):
     kind = "PNG"
 
     def new_image(self, **kwargs):
-        back_color = kwargs.get("fill_color", "white")
-        fill_color = kwargs.get("back_color", "black")
+        back_color = kwargs.get("back_color", "white")
+        fill_color = kwargs.get("fill_color", "black")
 
         if fill_color.lower() != "black" or back_color.lower() != "white":
             if back_color.lower() == "transparent":
@@ -29,6 +29,9 @@ class PilImage(qrcode.image.base.BaseImage):
                 mode = "RGB"
         else:
             mode = "1"
+            # L mode (1 mode) color = (r*299 + g*587 + b*114)//1000
+            if fill_color.lower() == "black": fill_color = 0
+            if back_color.lower() == "white": back_color = 255
 
         img = Image.new(mode, (self.pixel_size, self.pixel_size), back_color)
         self.fill_color = fill_color

server/www/packages/packages-common/qrcode/main.py

@@ -23,12 +23,23 @@ def _check_box_size(size):
             "Invalid box size (was %s, expected larger than 0)" % size)
 
 
+def _check_mask_pattern(mask_pattern):
+    if mask_pattern is None:
+        return
+    if not isinstance(mask_pattern, int):
+        raise TypeError(
+            "Invalid mask pattern (was %s, expected int)" % type(mask_pattern))
+    if mask_pattern < 0 or mask_pattern > 7:
+        raise ValueError(
+            "Mask pattern should be in range(8) (got %s)" % mask_pattern)
+
 class QRCode:
 
     def __init__(self, version=None,
                  error_correction=constants.ERROR_CORRECT_M,
                  box_size=10, border=4,
-                 image_factory=None):
+                 image_factory=None,
+                 mask_pattern=None):
         _check_box_size(box_size)
         self.version = version and int(version)
         self.error_correction = int(error_correction)
@@ -36,6 +47,8 @@ class QRCode:
         # Spec says border should be at least four boxes wide, but allow for
         # any (e.g. for producing printable QR codes).
         self.border = int(border)
+        _check_mask_pattern(mask_pattern)
+        self.mask_pattern = mask_pattern
         self.image_factory = image_factory
         if image_factory is not None:
             assert issubclass(image_factory, BaseImage)
@@ -62,7 +75,8 @@ class QRCode:
             self.data_list.append(data)
         else:
             if optimize:
-                self.data_list.extend(util.optimal_data_chunks(data))
+                self.data_list.extend(
+                    util.optimal_data_chunks(data, minimum=optimize))
             else:
                 self.data_list.append(util.QRData(data))
         self.data_cache = None
@@ -76,7 +90,10 @@ class QRCode:
         """
         if fit or (self.version is None):
             self.best_fit(start=self.version)
-        self.makeImpl(False, self.best_mask_pattern())
+        if self.mask_pattern is None:
+            self.makeImpl(False, self.best_mask_pattern())
+        else:
+            self.makeImpl(False, self.mask_pattern)
 
     def makeImpl(self, test, mask_pattern):
         _check_version(self.version)

server/www/packages/packages-common/qrcode/mecard.py

@@ -1,33 +0,0 @@
-import six
-
-# {'code': 'N', 'label': 'Name', 'required': True, 'multipart': [
-#     'Last Name', 'First Name']},
-PROPERTIES = {
-    'NICKNAME': {'label': 'Nickname'},
-    'BDAY': {'label': 'Birthday', 'date': True},
-    'TEL': {'label': 'Phone'},
-    'EMAIL': {'label': 'E-mail'},
-    'ADR': {'label': 'Address', 'multipart': [
-        'PO Box', 'Room Number', 'House Number', 'City', 'Prefecture',
-        'Zip Code', 'Country']},
-    'URL': {'label': 'URL'},
-    'MEMO': {'label': 'Note'},
-}
-
-
-def build_code(data):
-    notation = []
-
-    name = data['N']
-    if not isinstance(name, six.text_type):
-        name = ','.join(name)
-    notation.append('N', name)
-
-    for prop in PROPERTIES:
-        value = data.get(prop['code'])
-        if not value:
-            continue
-        if prop['date']:
-            value = value.strftime('%Y%m%d')
-        elif prop['multipart']:
-            value = ','.join(value)

server/www/packages/packages-common/qrcode/release.py

@@ -0,0 +1,42 @@
+"""
+This file provides zest.releaser entrypoints using when releasing new
+qrcode versions.
+"""
+import os
+import re
+import datetime
+
+
+def update_manpage(data):
+    """
+    Update the version in the manpage document.
+    """
+    if data['name'] != 'qrcode':
+        print('no qrcode')
+        return
+
+    base_dir = os.path.dirname(os.path.dirname(os.path.abspath(__file__)))
+    filename = os.path.join(base_dir, 'doc', 'qr.1')
+    with open(filename, 'r') as f:
+        lines = f.readlines()
+
+    changed = False
+    for i, line in enumerate(lines):
+        if not line.startswith('.TH '):
+            continue
+        parts = re.split(r'"([^"]*)"', line)
+        if len(parts) < 5:
+            continue
+        changed = parts[3] != data['new_version']
+        if changed:
+            # Update version
+            parts[3] = data['new_version']
+            # Update date
+            parts[1] = datetime.datetime.now().strftime('%-d %b %Y')
+            lines[i] = '"'.join(parts)
+        break
+
+    if changed:
+        with open(filename, 'w') as f:
+            for line in lines:
+                f.write(line)

server/www/packages/packages-common/qrcode/speedy.py

@@ -1,8 +0,0 @@
-import string
-import qrcode
-
-qr = qrcode.QRCode()
-
-qr.add_data(string.letters*13)
-qr.make()
-print(qr.version)

server/www/packages/packages-common/qrcode/util.py

@@ -4,7 +4,7 @@ import math
 import six
 from six.moves import xrange
 
-from qrcode import base, exceptions
+from qrcode import base, exceptions, LUT
 
 # QR encoding modes.
 MODE_NUMBER = 1 << 0
@@ -189,51 +189,39 @@ def _lost_point_level1(modules, modules_count):
     lost_point = 0
 
     modules_range = xrange(modules_count)
-    row_range_first = (0, 1)
-    row_range_last = (-1, 0)
-    row_range_standard = (-1, 0, 1)
-
-    col_range_first = ((0, 1), (1,))
-    col_range_last = ((-1, 0), (-1,))
-    col_range_standard = ((-1, 0, 1), (-1, 1))
+    container = [0] * (modules_count + 1)
 
     for row in modules_range:
-
-        if row == 0:
-            row_range = row_range_first
-        elif row == modules_count-1:
-            row_range = row_range_last
-        else:
-            row_range = row_range_standard
-
+        this_row = modules[row]
+        previous_color = this_row[0]
+        length = 0
         for col in modules_range:
-
-            sameCount = 0
-            dark = modules[row][col]
-
-            if col == 0:
-                col_range = col_range_first
-            elif col == modules_count-1:
-                col_range = col_range_last
+            if this_row[col] == previous_color:
+                length += 1
             else:
-                col_range = col_range_standard
+                if length >= 5:
+                    container[length] += 1
+                length = 1
+                previous_color = this_row[col]
+        if length >= 5:
+            container[length] += 1
 
-            for r in row_range:
+    for col in modules_range:
+        previous_color = modules[0][col]
+        length = 0
+        for row in modules_range:
+            if modules[row][col] == previous_color:
+                length += 1
+            else:
+                if length >= 5:
+                    container[length] += 1
+                length = 1
+                previous_color = modules[row][col]
+        if length >= 5:
+            container[length] += 1
 
-                row_offset = row + r
-
-                if r != 0:
-                    col_idx = 0
-                else:
-                    col_idx = 1
-
-                for c in col_range[col_idx]:
-
-                    if dark == modules[row_offset][col + c]:
-                        sameCount += 1
-
-            if sameCount > 5:
-                lost_point += (3 + sameCount - 5)
+    lost_point += sum(container[each_length] * (each_length - 2)
+        for each_length in xrange(5, modules_count + 1))
 
     return lost_point
 
@@ -242,68 +230,111 @@ def _lost_point_level2(modules, modules_count):
     lost_point = 0
 
     modules_range = xrange(modules_count - 1)
-
     for row in modules_range:
         this_row = modules[row]
-        next_row = modules[row+1]
-        for col in modules_range:
-            count = 0
-            if this_row[col]:
-                count += 1
-            if next_row[col]:
-                count += 1
-            if this_row[col + 1]:
-                count += 1
-            if next_row[col + 1]:
-                count += 1
-            if count == 0 or count == 4:
+        next_row = modules[row + 1]
+        # use iter() and next() to skip next four-block. e.g.
+        # d a f   if top-right a != b botton-right,
+        # c b e   then both abcd and abef won't lost any point.
+        modules_range_iter = iter(modules_range)
+        for col in modules_range_iter:
+            top_right = this_row[col + 1]
+            if top_right != next_row[col + 1]:
+                # reduce 33.3% of runtime via next().
+                # None: raise nothing if there is no next item.
+                next(modules_range_iter, None)
+            elif top_right != this_row[col]:
+                continue
+            elif top_right != next_row[col]:
+                continue
+            else:
                 lost_point += 3
 
     return lost_point
 
 
 def _lost_point_level3(modules, modules_count):
-    modules_range_short = xrange(modules_count-6)
-
+    # 1 : 1 : 3 : 1 : 1 ratio (dark:light:dark:light:dark) pattern in
+    # row/column, preceded or followed by light area 4 modules wide. From ISOIEC.
+    # pattern1:     10111010000
+    # pattern2: 00001011101
+    modules_range = xrange(modules_count)
+    modules_range_short = xrange(modules_count-10)
     lost_point = 0
-    for row in xrange(modules_count):
+
+    for row in modules_range:
         this_row = modules[row]
-        for col in modules_range_short:
-            if (this_row[col]
-                    and not this_row[col + 1]
-                    and this_row[col + 2]
-                    and this_row[col + 3]
+        modules_range_short_iter = iter(modules_range_short)
+        col = 0
+        for col in modules_range_short_iter:
+            if (
+                        not this_row[col + 1]
                     and this_row[col + 4]
                     and not this_row[col + 5]
-                    and this_row[col + 6]):
+                    and this_row[col + 6]
+                    and not this_row[col + 9]
+                and (
+                        this_row[col + 0]
+                    and this_row[col + 2]
+                    and this_row[col + 3]
+                    and not this_row[col + 7]
+                    and not this_row[col + 8]
+                    and not this_row[col + 10]
+                or
+                        not this_row[col + 0]
+                    and not this_row[col + 2]
+                    and not this_row[col + 3]
+                    and this_row[col + 7]
+                    and this_row[col + 8]
+                    and this_row[col + 10]
+                    )
+                ):
                 lost_point += 40
+# horspool algorithm.
+# if this_row[col + 10] == True,  pattern1 shift 4, pattern2 shift 2. So min=2.
+# if this_row[col + 10] == False, pattern1 shift 1, pattern2 shift 1. So min=1.
+            if this_row[col + 10]:
+                next(modules_range_short_iter, None)
 
-    for col in xrange(modules_count):
-        for row in modules_range_short:
-            if (modules[row][col]
-                    and not modules[row + 1][col]
-                    and modules[row + 2][col]
-                    and modules[row + 3][col]
+    for col in modules_range:
+        modules_range_short_iter = iter(modules_range_short)
+        row = 0
+        for row in modules_range_short_iter:
+            if (
+                        not modules[row + 1][col]
                     and modules[row + 4][col]
                     and not modules[row + 5][col]
-                    and modules[row + 6][col]):
+                    and modules[row + 6][col]
+                    and not modules[row + 9][col]
+                and (
+                        modules[row + 0][col]
+                    and modules[row + 2][col]
+                    and modules[row + 3][col]
+                    and not modules[row + 7][col]
+                    and not modules[row + 8][col]
+                    and not modules[row + 10][col]
+                or
+                        not modules[row + 0][col]
+                    and not modules[row + 2][col]
+                    and not modules[row + 3][col]
+                    and modules[row + 7][col]
+                    and modules[row + 8][col]
+                    and modules[row + 10][col]
+                    )
+                ):
                 lost_point += 40
+            if modules[row + 10][col]:
+                next(modules_range_short_iter, None)
 
     return lost_point
 
 
 def _lost_point_level4(modules, modules_count):
-    modules_range = xrange(modules_count)
-    dark_count = 0
-
-    for row in modules_range:
-        this_row = modules[row]
-        for col in modules_range:
-            if this_row[col]:
-                dark_count += 1
-
-    ratio = abs(100 * dark_count / modules_count / modules_count - 50) / 5
-    return ratio * 10
+    dark_count = sum(map(sum, modules))
+    percent = float(dark_count) / (modules_count**2)
+    # Every 5% departure from 50%, rating++
+    rating = int(abs(percent * 100 - 50) / 5)
+    return rating * 10
 
 
 def optimal_data_chunks(data, minimum=4):
@@ -479,9 +510,12 @@ def create_bytes(buffer, rs_blocks):
         offset += dcCount
 
         # Get error correction polynomial.
-        rsPoly = base.Polynomial([1], 0)
-        for i in range(ecCount):
-            rsPoly = rsPoly * base.Polynomial([1, base.gexp(i)], 0)
+        if ecCount in LUT.rsPoly_LUT:
+            rsPoly = base.Polynomial(LUT.rsPoly_LUT[ecCount], 0)
+        else:
+            rsPoly = base.Polynomial([1], 0)
+            for i in range(ecCount):
+                rsPoly = rsPoly * base.Polynomial([1, base.gexp(i)], 0)
 
         rawPoly = base.Polynomial(dcdata[r], len(rsPoly) - 1)
 

server/www/packages/packages-common/six.py

@@ -1,6 +1,4 @@
-"""Utilities for writing code that runs on Python 2 and 3"""
-
-# Copyright (c) 2010-2015 Benjamin Peterson
+# Copyright (c) 2010-2017 Benjamin Peterson
 #
 # Permission is hereby granted, free of charge, to any person obtaining a copy
 # of this software and associated documentation files (the "Software"), to deal
@@ -20,6 +18,8 @@
 # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 # SOFTWARE.
 
+"""Utilities for writing code that runs on Python 2 and 3"""
+
 from __future__ import absolute_import
 
 import functools
@@ -29,7 +29,7 @@ import sys
 import types
 
 __author__ = "Benjamin Peterson <benjamin@python.org>"
-__version__ = "1.10.0"
+__version__ = "1.11.0"
 
 
 # Useful for very coarse version differentiation.
@@ -241,6 +241,7 @@ _moved_attributes = [
     MovedAttribute("map", "itertools", "builtins", "imap", "map"),
     MovedAttribute("getcwd", "os", "os", "getcwdu", "getcwd"),
     MovedAttribute("getcwdb", "os", "os", "getcwd", "getcwdb"),
+    MovedAttribute("getoutput", "commands", "subprocess"),
     MovedAttribute("range", "__builtin__", "builtins", "xrange", "range"),
     MovedAttribute("reload_module", "__builtin__", "importlib" if PY34 else "imp", "reload"),
     MovedAttribute("reduce", "__builtin__", "functools"),
@@ -262,10 +263,11 @@ _moved_attributes = [
     MovedModule("html_entities", "htmlentitydefs", "html.entities"),
     MovedModule("html_parser", "HTMLParser", "html.parser"),
     MovedModule("http_client", "httplib", "http.client"),
+    MovedModule("email_mime_base", "email.MIMEBase", "email.mime.base"),
+    MovedModule("email_mime_image", "email.MIMEImage", "email.mime.image"),
     MovedModule("email_mime_multipart", "email.MIMEMultipart", "email.mime.multipart"),
     MovedModule("email_mime_nonmultipart", "email.MIMENonMultipart", "email.mime.nonmultipart"),
     MovedModule("email_mime_text", "email.MIMEText", "email.mime.text"),
-    MovedModule("email_mime_base", "email.MIMEBase", "email.mime.base"),
     MovedModule("BaseHTTPServer", "BaseHTTPServer", "http.server"),
     MovedModule("CGIHTTPServer", "CGIHTTPServer", "http.server"),
     MovedModule("SimpleHTTPServer", "SimpleHTTPServer", "http.server"),
@@ -337,10 +339,12 @@ _urllib_parse_moved_attributes = [
     MovedAttribute("quote_plus", "urllib", "urllib.parse"),
     MovedAttribute("unquote", "urllib", "urllib.parse"),
     MovedAttribute("unquote_plus", "urllib", "urllib.parse"),
+    MovedAttribute("unquote_to_bytes", "urllib", "urllib.parse", "unquote", "unquote_to_bytes"),
     MovedAttribute("urlencode", "urllib", "urllib.parse"),
     MovedAttribute("splitquery", "urllib", "urllib.parse"),
     MovedAttribute("splittag", "urllib", "urllib.parse"),
     MovedAttribute("splituser", "urllib", "urllib.parse"),
+    MovedAttribute("splitvalue", "urllib", "urllib.parse"),
     MovedAttribute("uses_fragment", "urlparse", "urllib.parse"),
     MovedAttribute("uses_netloc", "urlparse", "urllib.parse"),
     MovedAttribute("uses_params", "urlparse", "urllib.parse"),
@@ -416,6 +420,8 @@ _urllib_request_moved_attributes = [
     MovedAttribute("URLopener", "urllib", "urllib.request"),
     MovedAttribute("FancyURLopener", "urllib", "urllib.request"),
     MovedAttribute("proxy_bypass", "urllib", "urllib.request"),
+    MovedAttribute("parse_http_list", "urllib2", "urllib.request"),
+    MovedAttribute("parse_keqv_list", "urllib2", "urllib.request"),
 ]
 for attr in _urllib_request_moved_attributes:
     setattr(Module_six_moves_urllib_request, attr.name, attr)
@@ -679,11 +685,15 @@ if PY3:
     exec_ = getattr(moves.builtins, "exec")
 
     def reraise(tp, value, tb=None):
-        if value is None:
-            value = tp()
-        if value.__traceback__ is not tb:
-            raise value.with_traceback(tb)
-        raise value
+        try:
+            if value is None:
+                value = tp()
+            if value.__traceback__ is not tb:
+                raise value.with_traceback(tb)
+            raise value
+        finally:
+            value = None
+            tb = None
 
 else:
     def exec_(_code_, _globs_=None, _locs_=None):
@@ -699,19 +709,28 @@ else:
         exec("""exec _code_ in _globs_, _locs_""")
 
     exec_("""def reraise(tp, value, tb=None):
-    raise tp, value, tb
+    try:
+        raise tp, value, tb
+    finally:
+        tb = None
 """)
 
 
 if sys.version_info[:2] == (3, 2):
     exec_("""def raise_from(value, from_value):
-    if from_value is None:
-        raise value
-    raise value from from_value
+    try:
+        if from_value is None:
+            raise value
+        raise value from from_value
+    finally:
+        value = None
 """)
 elif sys.version_info[:2] > (3, 2):
     exec_("""def raise_from(value, from_value):
-    raise value from from_value
+    try:
+        raise value from from_value
+    finally:
+        value = None
 """)
 else:
     def raise_from(value, from_value):
@@ -802,10 +821,14 @@ def with_metaclass(meta, *bases):
     # This requires a bit of explanation: the basic idea is to make a dummy
     # metaclass for one level of class instantiation that replaces itself with
     # the actual metaclass.
-    class metaclass(meta):
+    class metaclass(type):
 
         def __new__(cls, name, this_bases, d):
             return meta(name, bases, d)
+
+        @classmethod
+        def __prepare__(cls, name, this_bases):
+            return meta.__prepare__(name, bases)
     return type.__new__(metaclass, 'temporary_class', (), {})
 
 

server/www/packages/packages-common/tornado/__init__.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 #
 # Copyright 2009 Facebook
 #
@@ -25,5 +24,5 @@ from __future__ import absolute_import, division, print_function
 # is zero for an official release, positive for a development branch,
 # or negative for a release candidate or beta (after the base version
 # number has been incremented)
-version = "4.5.1"
-version_info = (4, 5, 1, 0)
+version = "5.1"
+version_info = (5, 1, 0, 0)

server/www/packages/packages-common/tornado/_locale_data.py

@@ -1,5 +1,4 @@
-#!/usr/bin/env python
-# coding: utf-8
+# -*- coding: utf-8 -*-
 #
 # Copyright 2012 Facebook
 #

server/www/packages/packages-common/tornado/auth.py

@@ -1,4 +1,3 @@
-#!/usr/bin/env python
 #
 # Copyright 2009 Facebook
 #
@@ -38,15 +37,14 @@ Example usage for Google OAuth:
 
     class GoogleOAuth2LoginHandler(tornado.web.RequestHandler,
                                    tornado.auth.GoogleOAuth2Mixin):
-        @tornado.gen.coroutine
-        def get(self):
+        async def get(self):
             if self.get_argument('code', False):
-                user = yield self.get_authenticated_user(
+                user = await self.get_authenticated_user(
                     redirect_uri='http://your.site.com/auth/google',
                     code=self.get_argument('code'))
                 # Save the user with e.g. set_secure_cookie
             else:
-                yield self.authorize_redirect(
+                await self.authorize_redirect(
                     redirect_uri='http://your.site.com/auth/google',
                     client_id=self.settings['google_oauth']['key'],
                     scope=['profile', 'email'],
@@ -74,8 +72,11 @@ import hashlib
 import hmac
 import time
 import uuid
+import warnings
 
-from tornado.concurrent import TracebackFuture, return_future, chain_future
+from tornado.concurrent import (Future, _non_deprecated_return_future,
+                                future_set_exc_info, chain_future,
+                                future_set_result_unless_cancelled)
 from tornado import gen
 from tornado import httpclient
 from tornado import escape
@@ -112,14 +113,19 @@ def _auth_return_future(f):
 
     Note that when using this decorator the ``callback`` parameter
     inside the function will actually be a future.
+
+    .. deprecated:: 5.1
+       Will be removed in 6.0.
     """
     replacer = ArgReplacer(f, 'callback')
 
     @functools.wraps(f)
     def wrapper(*args, **kwargs):
-        future = TracebackFuture()
+        future = Future()
         callback, args, kwargs = replacer.replace(future, args, kwargs)
         if callback is not None:
+            warnings.warn("callback arguments are deprecated, use the returned Future instead",
+                          DeprecationWarning)
             future.add_done_callback(
                 functools.partial(_auth_future_to_callback, callback))
 
@@ -127,9 +133,9 @@ def _auth_return_future(f):
             if future.done():
                 return False
             else:
-                future.set_exc_info((typ, value, tb))
+                future_set_exc_info(future, (typ, value, tb))
                 return True
-        with ExceptionStackContext(handle_exception):
+        with ExceptionStackContext(handle_exception, delay_warning=True):
             f(*args, **kwargs)
         return future
     return wrapper
@@ -142,7 +148,7 @@ class OpenIdMixin(object):
 
     * ``_OPENID_ENDPOINT``: the identity provider's URI.
     """
-    @return_future
+    @_non_deprecated_return_future
     def authenticate_redirect(self, callback_uri=None,
                               ax_attrs=["name", "email", "language", "username"],
                               callback=None):
@@ -161,6 +167,11 @@ class OpenIdMixin(object):
            not strictly necessary as this method is synchronous,
            but they are supplied for consistency with
            `OAuthMixin.authorize_redirect`.
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument and returned awaitable will be removed
+           in Tornado 6.0; this will be an ordinary synchronous function.
         """
         callback_uri = callback_uri or self.request.uri
         args = self._openid_args(callback_uri, ax_attrs=ax_attrs)
@@ -178,6 +189,11 @@ class OpenIdMixin(object):
         is present and `authenticate_redirect` if it is not).
 
         The result of this method will generally be used to set a cookie.
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
         """
         # Verify the OpenID response via direct request to the OP
         args = dict((k, v[-1]) for k, v in self.request.arguments.items())
@@ -185,9 +201,9 @@ class OpenIdMixin(object):
         url = self._OPENID_ENDPOINT
         if http_client is None:
             http_client = self.get_auth_http_client()
-        http_client.fetch(url, functools.partial(
-            self._on_authentication_verified, callback),
-            method="POST", body=urllib_parse.urlencode(args))
+        fut = http_client.fetch(url, method="POST", body=urllib_parse.urlencode(args))
+        fut.add_done_callback(functools.partial(
+            self._on_authentication_verified, callback))
 
     def _openid_args(self, callback_uri, ax_attrs=[], oauth_scope=None):
         url = urlparse.urljoin(self.request.full_url(), callback_uri)
@@ -237,11 +253,16 @@ class OpenIdMixin(object):
             })
         return args
 
-    def _on_authentication_verified(self, future, response):
-        if response.error or b"is_valid:true" not in response.body:
+    def _on_authentication_verified(self, future, response_fut):
+        try:
+            response = response_fut.result()
+        except Exception as e:
             future.set_exception(AuthError(
-                "Invalid OpenID response: %s" % (response.error or
-                                                 response.body)))
+                "Error response %s" % e))
+            return
+        if b"is_valid:true" not in response.body:
+            future.set_exception(AuthError(
+                "Invalid OpenID response: %s" % response.body))
             return
 
         # Make sure we got back at least an email from attribute exchange
@@ -295,7 +316,7 @@ class OpenIdMixin(object):
         claimed_id = self.get_argument("openid.claimed_id", None)
         if claimed_id:
             user["claimed_id"] = claimed_id
-        future.set_result(user)
+        future_set_result_unless_cancelled(future, user)
 
     def get_auth_http_client(self):
         """Returns the `.AsyncHTTPClient` instance to be used for auth requests.
@@ -322,48 +343,52 @@ class OAuthMixin(object):
     Subclasses must also override the `_oauth_get_user_future` and
     `_oauth_consumer_token` methods.
     """
-    @return_future
+    @_non_deprecated_return_future
     def authorize_redirect(self, callback_uri=None, extra_params=None,
                            http_client=None, callback=None):
         """Redirects the user to obtain OAuth authorization for this service.
 
         The ``callback_uri`` may be omitted if you have previously
-        registered a callback URI with the third-party service.  For
-        some services (including Friendfeed), you must use a
-        previously-registered callback URI and cannot specify a
-        callback via this method.
+        registered a callback URI with the third-party service. For
+        some services, you must use a previously-registered callback
+        URI and cannot specify a callback via this method.
 
         This method sets a cookie called ``_oauth_request_token`` which is
         subsequently used (and cleared) in `get_authenticated_user` for
         security purposes.
 
-        Note that this method is asynchronous, although it calls
-        `.RequestHandler.finish` for you so it may not be necessary
-        to pass a callback or use the `.Future` it returns.  However,
-        if this method is called from a function decorated with
-        `.gen.coroutine`, you must call it with ``yield`` to keep the
-        response from being closed prematurely.
+        This method is asynchronous and must be called with ``await``
+        or ``yield`` (This is different from other ``auth*_redirect``
+        methods defined in this module). It calls
+        `.RequestHandler.finish` for you so you should not write any
+        other response after it returns.
 
         .. versionchanged:: 3.1
            Now returns a `.Future` and takes an optional callback, for
            compatibility with `.gen.coroutine`.
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
+
         """
         if callback_uri and getattr(self, "_OAUTH_NO_CALLBACKS", False):
             raise Exception("This service does not support oauth_callback")
         if http_client is None:
             http_client = self.get_auth_http_client()
         if getattr(self, "_OAUTH_VERSION", "1.0a") == "1.0a":
-            http_client.fetch(
+            fut = http_client.fetch(
                 self._oauth_request_token_url(callback_uri=callback_uri,
-                                              extra_params=extra_params),
-                functools.partial(
-                    self._on_request_token,
-                    self._OAUTH_AUTHORIZE_URL,
-                    callback_uri,
-                    callback))
+                                              extra_params=extra_params))
+            fut.add_done_callback(functools.partial(
+                self._on_request_token,
+                self._OAUTH_AUTHORIZE_URL,
+                callback_uri,
+                callback))
         else:
-            http_client.fetch(
-                self._oauth_request_token_url(),
+            fut = http_client.fetch(self._oauth_request_token_url())
+            fut.add_done_callback(
                 functools.partial(
                     self._on_request_token, self._OAUTH_AUTHORIZE_URL,
                     callback_uri,
@@ -380,6 +405,11 @@ class OAuthMixin(object):
         requests to this service on behalf of the user.  The dictionary will
         also contain other fields such as ``name``, depending on the service
         used.
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
         """
         future = callback
         request_key = escape.utf8(self.get_argument("oauth_token"))
@@ -390,7 +420,8 @@ class OAuthMixin(object):
                 "Missing OAuth request token cookie"))
             return
         self.clear_cookie("_oauth_request_token")
-        cookie_key, cookie_secret = [base64.b64decode(escape.utf8(i)) for i in request_cookie.split("|")]
+        cookie_key, cookie_secret = [
+            base64.b64decode(escape.utf8(i)) for i in request_cookie.split("|")]
         if cookie_key != request_key:
             future.set_exception(AuthError(
                 "Request token does not match cookie"))
@@ -400,8 +431,8 @@ class OAuthMixin(object):
             token["verifier"] = oauth_verifier
         if http_client is None:
             http_client = self.get_auth_http_client()
-        http_client.fetch(self._oauth_access_token_url(token),
-                          functools.partial(self._on_access_token, callback))
+        fut = http_client.fetch(self._oauth_access_token_url(token))
+        fut.add_done_callback(functools.partial(self._on_access_token, callback))
 
     def _oauth_request_token_url(self, callback_uri=None, extra_params=None):
         consumer_token = self._oauth_consumer_token()
@@ -429,9 +460,11 @@ class OAuthMixin(object):
         return url + "?" + urllib_parse.urlencode(args)
 
     def _on_request_token(self, authorize_url, callback_uri, callback,
-                          response):
-        if response.error:
-            raise Exception("Could not get request token: %s" % response.error)
+                          response_fut):
+        try:
+            response = response_fut.result()
+        except Exception as e:
+            raise Exception("Could not get request token: %s" % e)
         request_token = _oauth_parse_response(response.body)
         data = (base64.b64encode(escape.utf8(request_token["key"])) + b"|" +
                 base64.b64encode(escape.utf8(request_token["secret"])))
@@ -471,13 +504,17 @@ class OAuthMixin(object):
         args["oauth_signature"] = signature
         return url + "?" + urllib_parse.urlencode(args)
 
-    def _on_access_token(self, future, response):
-        if response.error:
+    def _on_access_token(self, future, response_fut):
+        try:
+            response = response_fut.result()
+        except Exception:
             future.set_exception(AuthError("Could not fetch access token"))
             return
 
         access_token = _oauth_parse_response(response.body)
-        self._oauth_get_user_future(access_token).add_done_callback(
+        fut = self._oauth_get_user_future(access_token)
+        fut = gen.convert_yielded(fut)
+        fut.add_done_callback(
             functools.partial(self._on_oauth_get_user, access_token, future))
 
     def _oauth_consumer_token(self):
@@ -487,7 +524,7 @@ class OAuthMixin(object):
         """
         raise NotImplementedError()
 
-    @return_future
+    @_non_deprecated_return_future
     def _oauth_get_user_future(self, access_token, callback):
         """Subclasses must override this to get basic information about the
         user.
@@ -502,7 +539,18 @@ class OAuthMixin(object):
 
         For backwards compatibility, the callback-based ``_oauth_get_user``
         method is also supported.
+
+        .. versionchanged:: 5.1
+
+           Subclasses may also define this method with ``async def``.
+
+        .. deprecated:: 5.1
+
+           The ``_oauth_get_user`` fallback is deprecated and support for it
+           will be removed in 6.0.
         """
+        warnings.warn("_oauth_get_user is deprecated, override _oauth_get_user_future instead",
+                      DeprecationWarning)
         # By default, call the old-style _oauth_get_user, but new code
         # should override this method instead.
         self._oauth_get_user(access_token, callback)
@@ -519,7 +567,7 @@ class OAuthMixin(object):
             future.set_exception(AuthError("Error getting user"))
             return
         user["access_token"] = access_token
-        future.set_result(user)
+        future_set_result_unless_cancelled(future, user)
 
     def _oauth_request_parameters(self, url, access_token, parameters={},
                                   method="GET"):
@@ -569,7 +617,7 @@ class OAuth2Mixin(object):
     * ``_OAUTH_AUTHORIZE_URL``: The service's authorization url.
     * ``_OAUTH_ACCESS_TOKEN_URL``:  The service's access token url.
     """
-    @return_future
+    @_non_deprecated_return_future
     def authorize_redirect(self, redirect_uri=None, client_id=None,
                            client_secret=None, extra_params=None,
                            callback=None, scope=None, response_type="code"):
@@ -586,6 +634,11 @@ class OAuth2Mixin(object):
            not strictly necessary as this method is synchronous,
            but they are supplied for consistency with
            `OAuthMixin.authorize_redirect`.
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument and returned awaitable will be removed
+           in Tornado 6.0; this will be an ordinary synchronous function.
         """
         args = {
             "redirect_uri": redirect_uri,
@@ -629,16 +682,15 @@ class OAuth2Mixin(object):
             class MainHandler(tornado.web.RequestHandler,
                               tornado.auth.FacebookGraphMixin):
                 @tornado.web.authenticated
-                @tornado.gen.coroutine
-                def get(self):
-                    new_entry = yield self.oauth2_request(
+                async def get(self):
+                    new_entry = await self.oauth2_request(
                         "https://graph.facebook.com/me/feed",
                         post_args={"message": "I am posting from my Tornado application!"},
                         access_token=self.current_user["access_token"])
 
                     if not new_entry:
                         # Call failed; perhaps missing permission?
-                        yield self.authorize_redirect()
+                        await self.authorize_redirect()
                         return
                     self.finish("Posted a message!")
 
@@ -646,6 +698,11 @@ class OAuth2Mixin(object):
            :hide:
 
         .. versionadded:: 4.3
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
         """
         all_args = {}
         if access_token:
@@ -657,18 +714,19 @@ class OAuth2Mixin(object):
         callback = functools.partial(self._on_oauth2_request, callback)
         http = self.get_auth_http_client()
         if post_args is not None:
-            http.fetch(url, method="POST", body=urllib_parse.urlencode(post_args),
-                       callback=callback)
+            fut = http.fetch(url, method="POST", body=urllib_parse.urlencode(post_args))
         else:
-            http.fetch(url, callback=callback)
+            fut = http.fetch(url)
+        fut.add_done_callback(callback)
 
-    def _on_oauth2_request(self, future, response):
-        if response.error:
-            future.set_exception(AuthError("Error response %s fetching %s" %
-                                           (response.error, response.request.url)))
+    def _on_oauth2_request(self, future, response_fut):
+        try:
+            response = response_fut.result()
+        except Exception as e:
+            future.set_exception(AuthError("Error response %s" % e))
             return
 
-        future.set_result(escape.json_decode(response.body))
+        future_set_result_unless_cancelled(future, escape.json_decode(response.body))
 
     def get_auth_http_client(self):
         """Returns the `.AsyncHTTPClient` instance to be used for auth requests.
@@ -698,13 +756,12 @@ class TwitterMixin(OAuthMixin):
 
         class TwitterLoginHandler(tornado.web.RequestHandler,
                                   tornado.auth.TwitterMixin):
-            @tornado.gen.coroutine
-            def get(self):
+            async def get(self):
                 if self.get_argument("oauth_token", None):
-                    user = yield self.get_authenticated_user()
+                    user = await self.get_authenticated_user()
                     # Save the user using e.g. set_secure_cookie()
                 else:
-                    yield self.authorize_redirect()
+                    await self.authorize_redirect()
 
     .. testoutput::
        :hide:
@@ -721,7 +778,7 @@ class TwitterMixin(OAuthMixin):
     _OAUTH_NO_CALLBACKS = False
     _TWITTER_BASE_URL = "https://api.twitter.com/1.1"
 
-    @return_future
+    @_non_deprecated_return_future
     def authenticate_redirect(self, callback_uri=None, callback=None):
         """Just like `~OAuthMixin.authorize_redirect`, but
         auto-redirects if authorized.
@@ -732,6 +789,11 @@ class TwitterMixin(OAuthMixin):
         .. versionchanged:: 3.1
            Now returns a `.Future` and takes an optional callback, for
            compatibility with `.gen.coroutine`.
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
         """
         http = self.get_auth_http_client()
         http.fetch(self._oauth_request_token_url(callback_uri=callback_uri),
@@ -764,9 +826,8 @@ class TwitterMixin(OAuthMixin):
             class MainHandler(tornado.web.RequestHandler,
                               tornado.auth.TwitterMixin):
                 @tornado.web.authenticated
-                @tornado.gen.coroutine
-                def get(self):
-                    new_entry = yield self.twitter_request(
+                async def get(self):
+                    new_entry = await self.twitter_request(
                         "/statuses/update",
                         post_args={"status": "Testing Tornado Web Server"},
                         access_token=self.current_user["access_token"])
@@ -779,6 +840,10 @@ class TwitterMixin(OAuthMixin):
         .. testoutput::
            :hide:
 
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
         """
         if path.startswith('http:') or path.startswith('https:'):
             # Raw urls are useful for e.g. search which doesn't follow the
@@ -798,20 +863,21 @@ class TwitterMixin(OAuthMixin):
         if args:
             url += "?" + urllib_parse.urlencode(args)
         http = self.get_auth_http_client()
-        http_callback = functools.partial(self._on_twitter_request, callback)
+        http_callback = functools.partial(self._on_twitter_request, callback, url)
         if post_args is not None:
-            http.fetch(url, method="POST", body=urllib_parse.urlencode(post_args),
-                       callback=http_callback)
+            fut = http.fetch(url, method="POST", body=urllib_parse.urlencode(post_args))
         else:
-            http.fetch(url, callback=http_callback)
+            fut = http.fetch(url)
+        fut.add_done_callback(http_callback)
 
-    def _on_twitter_request(self, future, response):
-        if response.error:
+    def _on_twitter_request(self, future, url, response_fut):
+        try:
+            response = response_fut.result()
+        except Exception as e:
             future.set_exception(AuthError(
-                "Error response %s fetching %s" % (response.error,
-                                                   response.request.url)))
+                "Error response %s fetching %s" % (e, url)))
             return
-        future.set_result(escape.json_decode(response.body))
+        future_set_result_unless_cancelled(future, escape.json_decode(response.body))
 
     def _oauth_consumer_token(self):
         self.require_setting("twitter_consumer_key", "Twitter OAuth")
@@ -848,8 +914,8 @@ class GoogleOAuth2Mixin(OAuth2Mixin):
 
     .. versionadded:: 3.2
     """
-    _OAUTH_AUTHORIZE_URL = "https://accounts.google.com/o/oauth2/auth"
-    _OAUTH_ACCESS_TOKEN_URL = "https://accounts.google.com/o/oauth2/token"
+    _OAUTH_AUTHORIZE_URL = "https://accounts.google.com/o/oauth2/v2/auth"
+    _OAUTH_ACCESS_TOKEN_URL = "https://www.googleapis.com/oauth2/v4/token"
     _OAUTH_USERINFO_URL = "https://www.googleapis.com/oauth2/v1/userinfo"
     _OAUTH_NO_CALLBACKS = False
     _OAUTH_SETTINGS_KEY = 'google_oauth'
@@ -872,19 +938,18 @@ class GoogleOAuth2Mixin(OAuth2Mixin):
 
             class GoogleOAuth2LoginHandler(tornado.web.RequestHandler,
                                            tornado.auth.GoogleOAuth2Mixin):
-                @tornado.gen.coroutine
-                def get(self):
+                async def get(self):
                     if self.get_argument('code', False):
-                        access = yield self.get_authenticated_user(
+                        access = await self.get_authenticated_user(
                             redirect_uri='http://your.site.com/auth/google',
                             code=self.get_argument('code'))
-                        user = yield self.oauth2_request(
+                        user = await self.oauth2_request(
                             "https://www.googleapis.com/oauth2/v1/userinfo",
                             access_token=access["access_token"])
                         # Save the user and access token with
                         # e.g. set_secure_cookie.
                     else:
-                        yield self.authorize_redirect(
+                        await self.authorize_redirect(
                             redirect_uri='http://your.site.com/auth/google',
                             client_id=self.settings['google_oauth']['key'],
                             scope=['profile', 'email'],
@@ -894,7 +959,11 @@ class GoogleOAuth2Mixin(OAuth2Mixin):
         .. testoutput::
            :hide:
 
-        """
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
+        """  # noqa: E501
         http = self.get_auth_http_client()
         body = urllib_parse.urlencode({
             "redirect_uri": redirect_uri,
@@ -904,18 +973,22 @@ class GoogleOAuth2Mixin(OAuth2Mixin):
             "grant_type": "authorization_code",
         })
 
-        http.fetch(self._OAUTH_ACCESS_TOKEN_URL,
-                   functools.partial(self._on_access_token, callback),
-                   method="POST", headers={'Content-Type': 'application/x-www-form-urlencoded'}, body=body)
+        fut = http.fetch(self._OAUTH_ACCESS_TOKEN_URL,
+                         method="POST",
+                         headers={'Content-Type': 'application/x-www-form-urlencoded'},
+                         body=body)
+        fut.add_done_callback(functools.partial(self._on_access_token, callback))
 
-    def _on_access_token(self, future, response):
+    def _on_access_token(self, future, response_fut):
         """Callback function for the exchange to the access token."""
-        if response.error:
-            future.set_exception(AuthError('Google auth error: %s' % str(response)))
+        try:
+            response = response_fut.result()
+        except Exception as e:
+            future.set_exception(AuthError('Google auth error: %s' % str(e)))
             return
 
         args = escape.json_decode(response.body)
-        future.set_result(args)
+        future_set_result_unless_cancelled(future, args)
 
 
 class FacebookGraphMixin(OAuth2Mixin):
@@ -936,17 +1009,16 @@ class FacebookGraphMixin(OAuth2Mixin):
 
             class FacebookGraphLoginHandler(tornado.web.RequestHandler,
                                             tornado.auth.FacebookGraphMixin):
-              @tornado.gen.coroutine
-              def get(self):
+              async def get(self):
                   if self.get_argument("code", False):
-                      user = yield self.get_authenticated_user(
+                      user = await self.get_authenticated_user(
                           redirect_uri='/auth/facebookgraph/',
                           client_id=self.settings["facebook_api_key"],
                           client_secret=self.settings["facebook_secret"],
                           code=self.get_argument("code"))
                       # Save the user with e.g. set_secure_cookie
                   else:
-                      yield self.authorize_redirect(
+                      await self.authorize_redirect(
                           redirect_uri='/auth/facebookgraph/',
                           client_id=self.settings["facebook_api_key"],
                           extra_params={"scope": "read_stream,offline_access"})
@@ -963,11 +1035,17 @@ class FacebookGraphMixin(OAuth2Mixin):
           Tornado it will change from a string to an integer.
         * ``id``, ``name``, ``first_name``, ``last_name``, ``locale``, ``picture``,
           ``link``, plus any fields named in the ``extra_fields`` argument. These
-          fields are copied from the Facebook graph API `user object <https://developers.facebook.com/docs/graph-api/reference/user>`_
+          fields are copied from the Facebook graph API
+          `user object <https://developers.facebook.com/docs/graph-api/reference/user>`_
 
         .. versionchanged:: 4.5
            The ``session_expires`` field was updated to support changes made to the
            Facebook API in March 2017.
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
         """
         http = self.get_auth_http_client()
         args = {
@@ -982,14 +1060,17 @@ class FacebookGraphMixin(OAuth2Mixin):
         if extra_fields:
             fields.update(extra_fields)
 
-        http.fetch(self._oauth_request_token_url(**args),
-                   functools.partial(self._on_access_token, redirect_uri, client_id,
-                                     client_secret, callback, fields))
+        fut = http.fetch(self._oauth_request_token_url(**args))
+        fut.add_done_callback(functools.partial(self._on_access_token, redirect_uri, client_id,
+                                                client_secret, callback, fields))
 
+    @gen.coroutine
     def _on_access_token(self, redirect_uri, client_id, client_secret,
-                         future, fields, response):
-        if response.error:
-            future.set_exception(AuthError('Facebook auth error: %s' % str(response)))
+                         future, fields, response_fut):
+        try:
+            response = response_fut.result()
+        except Exception as e:
+            future.set_exception(AuthError('Facebook auth error: %s' % str(e)))
             return
 
         args = escape.json_decode(response.body)
@@ -998,10 +1079,8 @@ class FacebookGraphMixin(OAuth2Mixin):
             "expires_in": args.get("expires_in")
         }
 
-        self.facebook_request(
+        user = yield self.facebook_request(
             path="/me",
-            callback=functools.partial(
-                self._on_get_user_info, future, session, fields),
             access_token=session["access_token"],
             appsecret_proof=hmac.new(key=client_secret.encode('utf8'),
                                      msg=session["access_token"].encode('utf8'),
@@ -1009,9 +1088,8 @@ class FacebookGraphMixin(OAuth2Mixin):
             fields=",".join(fields)
         )
 
-    def _on_get_user_info(self, future, session, fields, user):
         if user is None:
-            future.set_result(None)
+            future_set_result_unless_cancelled(future, None)
             return
 
         fieldmap = {}
@@ -1024,7 +1102,7 @@ class FacebookGraphMixin(OAuth2Mixin):
         # This should change in Tornado 5.0.
         fieldmap.update({"access_token": session["access_token"],
                          "session_expires": str(session.get("expires_in"))})
-        future.set_result(fieldmap)
+        future_set_result_unless_cancelled(future, fieldmap)
 
     @_auth_return_future
     def facebook_request(self, path, callback, access_token=None,
@@ -1045,14 +1123,13 @@ class FacebookGraphMixin(OAuth2Mixin):
 
         Example usage:
 
-        ..testcode::
+        .. testcode::
 
             class MainHandler(tornado.web.RequestHandler,
                               tornado.auth.FacebookGraphMixin):
                 @tornado.web.authenticated
-                @tornado.gen.coroutine
-                def get(self):
-                    new_entry = yield self.facebook_request(
+                async def get(self):
+                    new_entry = await self.facebook_request(
                         "/me/feed",
                         post_args={"message": "I am posting from my Tornado application!"},
                         access_token=self.current_user["access_token"])
@@ -1075,6 +1152,11 @@ class FacebookGraphMixin(OAuth2Mixin):
 
         .. versionchanged:: 3.1
            Added the ability to override ``self._FACEBOOK_BASE_URL``.
+
+        .. deprecated:: 5.1
+
+           The ``callback`` argument is deprecated and will be removed in 6.0.
+           Use the returned awaitable object instead.
         """
         url = self._FACEBOOK_BASE_URL + path
         # Thanks to the _auth_return_future decorator, our "callback"