47 lines
1.3 KiB
Go
47 lines
1.3 KiB
Go
package utils
|
|
|
|
import (
|
|
"bytes"
|
|
"crypto/aes"
|
|
"crypto/cipher"
|
|
|
|
"git.rosy.net.cn/baseapi"
|
|
)
|
|
|
|
func AESCBCEncpryt(data, aesKey, iv []byte) (encryptedData []byte, err error) {
|
|
c, err := aes.NewCipher(aesKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
cfbdec := cipher.NewCBCEncrypter(c, iv[:c.BlockSize()])
|
|
data = PKCSPadding(data, c.BlockSize())
|
|
encryptedData = make([]byte, len(data))
|
|
cfbdec.CryptBlocks(encryptedData, data)
|
|
return encryptedData, nil
|
|
}
|
|
|
|
func AESCBCDecpryt(encryptedData, aesKey, iv []byte) (decryptedData []byte, err error) {
|
|
c, err := aes.NewCipher(aesKey)
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
cfbdec := cipher.NewCBCDecrypter(c, iv[:c.BlockSize()])
|
|
decryptedData = make([]byte, len(encryptedData))
|
|
cfbdec.CryptBlocks(decryptedData, encryptedData)
|
|
decryptedData = PKCSUnPadding(decryptedData)
|
|
return decryptedData, nil
|
|
}
|
|
|
|
func PKCSUnPadding(originData []byte) []byte {
|
|
length := len(originData)
|
|
unpadding := int(originData[length-1])
|
|
baseapi.SugarLogger.Debug("PKCSUnPadding length:%d, unpadding:%d", length, unpadding)
|
|
return originData[:(length - unpadding)]
|
|
}
|
|
|
|
func PKCSPadding(ciphertext []byte, blockSize int) []byte {
|
|
padding := blockSize - len(ciphertext)%blockSize
|
|
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
|
|
return append(ciphertext, padtext...)
|
|
}
|