Initial commit

app/job/main/passport-user/service/aes.go

@@ -0,0 +1,51 @@
+package service
+
+import (
+	"bytes"
+	"crypto/aes"
+	"crypto/cipher"
+)
+
+//var key = []byte("bili_account_enc")
+
+// CBCEncrypt aes cbc encrypt
+func (s *Service) CBCEncrypt(origData []byte) ([]byte, error) {
+	block, err := aes.NewCipher(s.aesKey)
+	if err != nil {
+		return nil, err
+	}
+	blockSize := block.BlockSize()
+	origData = PKCS5Padding(origData, blockSize)
+	blockMode := cipher.NewCBCEncrypter(block, s.aesKey[:blockSize])
+	crypted := make([]byte, len(origData))
+	blockMode.CryptBlocks(crypted, origData)
+	return crypted, nil
+}
+
+// CBCDecrypt aes cbc decrypt
+func (s *Service) CBCDecrypt(crypted []byte) ([]byte, error) {
+	block, err := aes.NewCipher(s.aesKey)
+	if err != nil {
+		return nil, err
+	}
+	blockSize := block.BlockSize()
+	blockMode := cipher.NewCBCDecrypter(block, s.aesKey[:blockSize])
+	origData := make([]byte, len(crypted))
+	blockMode.CryptBlocks(origData, crypted)
+	origData = PKCS5UnPadding(origData)
+	return origData, nil
+}
+
+// PKCS5Padding padding
+func PKCS5Padding(ciphertext []byte, blockSize int) []byte {
+	padding := blockSize - len(ciphertext)%blockSize
+	padtext := bytes.Repeat([]byte{byte(padding)}, padding)
+	return append(ciphertext, padtext...)
+}
+
+// PKCS5UnPadding unpadding
+func PKCS5UnPadding(origData []byte) []byte {
+	length := len(origData)
+	unpadding := int(origData[length-1])
+	return origData[:(length - unpadding)]
+}