直接上代碼
package main
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"encoding/base64"
"fmt"
"strconv"
)
func PKCS7Padding(ciphertext []byte, blockSize int) []byte {
padding := blockSize - len(ciphertext)%blockSize
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
return append(ciphertext, padtext...)
}
func PKCS7UnPadding(origData []byte) []byte {
length := len(origData)
unpadding := int(origData[length-1])
return origData[:(length - unpadding)]
}
//AES加密,CBC
func AesEncrypt(origData, key []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
blockSize := block.BlockSize()
origData = PKCS7Padding(origData, blockSize)
blockMode := cipher.NewCBCEncrypter(block, key[:blockSize])
crypted := make([]byte, len(origData))
blockMode.CryptBlocks(crypted, origData)
return crypted, nil
}
//AES解密
func AesDecrypt(crypted, key []byte) ([]byte, error) {
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
blockSize := block.BlockSize()
blockMode := cipher.NewCBCDecrypter(block, key[:blockSize])
origData := make([]byte, len(crypted))
blockMode.CryptBlocks(origData, crypted)
origData = PKCS7UnPadding(origData)
return origData, nil
}
調(diào)用
func main() {
text := "123" // 你要加密的數(shù)據(jù)
AesKey := []byte("#HvL%$o0oNNoOZnk#o2qbqCeQB1iXeIR") // 對(duì)稱秘鑰長度必須是16的倍數(shù)
fmt.Printf("明文: %s\n秘鑰: %s\n", text, string(AesKey))
encrypted, err := AesEncrypt([]byte(text), AesKey)
if err != nil {
panic(err)
}
fmt.Printf("加密后: %s\n", base64.StdEncoding.EncodeToString(encrypted))
//encrypteds, _ := base64.StdEncoding.DecodeString("xvhqp8bT0mkEcAsNK+L4fw==")
origin, err := AesDecrypt(encrypted, AesKey)
if err != nil {
panic(err)
}
fmt.Printf("解密后明文: %s\n", string(origin))
}
返回?cái)?shù)據(jù):
明文: 123
秘鑰: #HvL%$o0oNNoOZnk#o2qbqCeQB1iXeIR
加密后: xvhqp8bT0mkEcAsNK+L4fw==
解密后明文: 123
