mirror of https://github.com/1Panel-dev/1Panel
99 lines
2.4 KiB
Go
99 lines
2.4 KiB
Go
package encrypt
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import (
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"bytes"
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"crypto/aes"
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"crypto/cipher"
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"crypto/md5"
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"crypto/rand"
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"encoding/base64"
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"encoding/hex"
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"errors"
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"fmt"
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"io"
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"github.com/1Panel-dev/1Panel/backend/global"
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)
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func StringEncrypt(text string) (string, error) {
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if len(text) == 0 {
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return "", errors.New("it is not possible to encrypt an empty string.")
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}
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key := global.CONF.System.EncryptKey
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pass := []byte(text)
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xpass, err := aesEncryptWithSalt([]byte(key), pass)
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if err == nil {
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pass64 := base64.StdEncoding.EncodeToString(xpass)
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return pass64, err
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}
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return "", err
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}
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func StringDecrypt(text string) (string, error) {
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if len(text) == 0 {
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return "", errors.New("it is not possible to decrypt an empty string.")
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}
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key := global.CONF.System.EncryptKey
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bytesPass, err := base64.StdEncoding.DecodeString(text)
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if err != nil {
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return "", err
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}
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var tpass []byte
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tpass, err = aesDecryptWithSalt([]byte(key), bytesPass)
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if err == nil {
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result := string(tpass[:])
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return result, err
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}
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return "", err
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}
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func Md5(str string) string {
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h := md5.New()
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h.Write([]byte(str))
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return hex.EncodeToString(h.Sum(nil))
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}
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func padding(plaintext []byte, blockSize int) []byte {
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padding := blockSize - len(plaintext)%blockSize
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padtext := bytes.Repeat([]byte{byte(padding)}, padding)
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return append(plaintext, padtext...)
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}
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func unPadding(origData []byte) []byte {
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length := len(origData)
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unpadding := int(origData[length-1])
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return origData[:(length - unpadding)]
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}
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func aesEncryptWithSalt(key, plaintext []byte) ([]byte, error) {
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plaintext = padding(plaintext, aes.BlockSize)
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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ciphertext := make([]byte, aes.BlockSize+len(plaintext))
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iv := ciphertext[0:aes.BlockSize]
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if _, err := io.ReadFull(rand.Reader, iv); err != nil {
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return nil, err
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}
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cbc := cipher.NewCBCEncrypter(block, iv)
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cbc.CryptBlocks(ciphertext[aes.BlockSize:], plaintext)
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return ciphertext, nil
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}
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func aesDecryptWithSalt(key, ciphertext []byte) ([]byte, error) {
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var block cipher.Block
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block, err := aes.NewCipher(key)
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if err != nil {
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return nil, err
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}
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if len(ciphertext) < aes.BlockSize {
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return nil, fmt.Errorf("iciphertext too short")
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}
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iv := ciphertext[:aes.BlockSize]
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ciphertext = ciphertext[aes.BlockSize:]
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cbc := cipher.NewCBCDecrypter(block, iv)
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cbc.CryptBlocks(ciphertext, ciphertext)
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ciphertext = unPadding(ciphertext)
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return ciphertext, nil
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}
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