mirror of https://github.com/hashicorp/consul
125 lines
2.8 KiB
Go
125 lines
2.8 KiB
Go
// Copyright (c) HashiCorp, Inc.
|
|
// SPDX-License-Identifier: BUSL-1.1
|
|
|
|
package utils
|
|
|
|
import (
|
|
"crypto/ecdsa"
|
|
"crypto/elliptic"
|
|
"crypto/rand"
|
|
"crypto/x509"
|
|
"encoding/pem"
|
|
"fmt"
|
|
|
|
"github.com/go-jose/go-jose/v3"
|
|
"github.com/go-jose/go-jose/v3/jwt"
|
|
"github.com/hashicorp/consul/api"
|
|
)
|
|
|
|
func ApplyDefaultProxySettings(c *api.Client) (bool, error) {
|
|
req := &api.ProxyConfigEntry{
|
|
Name: "global",
|
|
Kind: "proxy-defaults",
|
|
Config: map[string]any{
|
|
"protocol": "tcp",
|
|
},
|
|
}
|
|
ok, _, err := c.ConfigEntries().Set(req, &api.WriteOptions{})
|
|
return ok, err
|
|
}
|
|
|
|
// Generates a private and public key pair that is for signing
|
|
// JWT.
|
|
func GenerateKey() (pub, priv string, err error) {
|
|
privateKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
|
|
|
|
if err != nil {
|
|
return "", "", fmt.Errorf("error generating private key: %w", err)
|
|
}
|
|
|
|
{
|
|
derBytes, err := x509.MarshalECPrivateKey(privateKey)
|
|
if err != nil {
|
|
return "", "", fmt.Errorf("error marshaling private key: %w", err)
|
|
}
|
|
priv = string(pem.EncodeToMemory(&pem.Block{
|
|
Type: "EC PRIVATE KEY",
|
|
Bytes: derBytes,
|
|
}))
|
|
}
|
|
{
|
|
derBytes, err := x509.MarshalPKIXPublicKey(privateKey.Public())
|
|
if err != nil {
|
|
return "", "", fmt.Errorf("error marshaling public key: %w", err)
|
|
}
|
|
pub = string(pem.EncodeToMemory(&pem.Block{
|
|
Type: "PUBLIC KEY",
|
|
Bytes: derBytes,
|
|
}))
|
|
}
|
|
|
|
return pub, priv, nil
|
|
}
|
|
|
|
// SignJWT will bundle the provided claims into a signed JWT. The provided key
|
|
// is assumed to be ECDSA.
|
|
//
|
|
// If no private key is provided, it will generate a private key. These can
|
|
// be retrieved via the SigningKeys() method.
|
|
func SignJWT(privKey string, claims jwt.Claims, privateClaims interface{}) (string, error) {
|
|
var err error
|
|
if privKey == "" {
|
|
_, privKey, err = GenerateKey()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
}
|
|
var key *ecdsa.PrivateKey
|
|
block, _ := pem.Decode([]byte(privKey))
|
|
if block != nil {
|
|
key, err = x509.ParseECPrivateKey(block.Bytes)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
}
|
|
|
|
sig, err := jose.NewSigner(
|
|
jose.SigningKey{Algorithm: jose.ES256, Key: key},
|
|
(&jose.SignerOptions{}).WithType("JWT"),
|
|
)
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
raw, err := jwt.Signed(sig).
|
|
Claims(claims).
|
|
Claims(privateClaims).
|
|
CompactSerialize()
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
|
|
return raw, nil
|
|
}
|
|
|
|
// newJWKS converts a pem-encoded public key into JWKS data suitable for a
|
|
// verification endpoint response
|
|
func NewJWKS(pubKey string) (*jose.JSONWebKeySet, error) {
|
|
block, _ := pem.Decode([]byte(pubKey))
|
|
if block == nil || block.Type != "PUBLIC KEY" {
|
|
return nil, fmt.Errorf("unable to decode public key")
|
|
}
|
|
|
|
pub, err := x509.ParsePKIXPublicKey(block.Bytes)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return &jose.JSONWebKeySet{
|
|
Keys: []jose.JSONWebKey{
|
|
{
|
|
Key: pub,
|
|
},
|
|
},
|
|
}, nil
|
|
}
|