javascript 和 golang 前后端使用 AES 加密
2021-03-01 本文已影响0人
千罹
golang
package crypto
import (
"bytes"
"crypto/aes"
"crypto/cipher"
"encoding/hex"
"errors"
"fmt"
)
//参考文档
//http://www.topgoer.com/%E5%85%B6%E4%BB%96/%E5%8A%A0%E5%AF%86%E8%A7%A3%E5%AF%86/%E5%8A%A0%E5%AF%86%E8%A7%A3%E5%AF%86.html
//高级加密标准（Adevanced Encryption Standard ,AES）
//16,24,32位字符串的话，分别对应AES-128，AES-192，AES-256 加密方法
//key不能泄露
//var PwdKey = []byte("DIS**#KKKDJJSKDI")
var PwdKey = "linkbook1qaz*WSX"
//PKCS7 填充模式
func PKCS7Padding(ciphertext []byte, blockSize int) []byte {
padding := blockSize - len(ciphertext)%blockSize
//Repeat()函数的功能是把切片[]byte{byte(padding)}复制padding个，然后合并成新的字节切片返回
padtext := bytes.Repeat([]byte{byte(padding)}, padding)
return append(ciphertext, padtext...)
}
//填充的反向操作，删除填充字符串
func PKCS7UnPadding1(origData []byte) ([]byte, error) {
//获取数据长度
length := len(origData)
if length == 0 {
return nil, errors.New("加密字符串错误！")
} else {
//获取填充字符串长度
unpadding := int(origData[length-1])
//截取切片，删除填充字节，并且返回明文
return origData[:(length - unpadding)], nil
}
}
//实现加密
func AesEcrypt(origData []byte, key []byte) ([]byte, error) {
//创建加密算法实例
block, err := aes.NewCipher(key)
if err != nil {
return nil, err
}
//获取块的大小
blockSize := block.BlockSize()
//对数据进行填充，让数据长度满足需求
origData = PKCS7Padding(origData, blockSize)
//采用AES加密方法中CBC加密模式
blocMode := cipher.NewCBCEncrypter(block, key[:blockSize])
crypted := make([]byte, len(origData))
//执行加密
blocMode.CryptBlocks(crypted, origData)
return crypted, nil
}
//实现解密
func AesDeCrypt(cypted []byte, key []byte) (string, error) {
//创建加密算法实例
block, err := aes.NewCipher(key)
if err != nil {
return "", err
}
//获取块大小
blockSize := block.BlockSize()
//创建加密客户端实例
blockMode := cipher.NewCBCDecrypter(block, key[:blockSize])
origData := make([]byte, len(cypted))
//这个函数也可以用来解密
blockMode.CryptBlocks(origData, cypted)
//去除填充字符串
origData, err = PKCS7UnPadding1(origData)
if err != nil {
return "", err
}
return string(origData), err
}
//加密base64
func EnPwdCode(pwdStr string) string {
pwd := []byte(pwdStr)
result, err := AesEcrypt(pwd, []byte(PwdKey))
if err != nil {
return ""
}
return hex.EncodeToString(result)
}
//解密
func DePwdCode(pwd string) string {
temp, _ := hex.DecodeString(pwd)
//执行AES解密
res, _:=AesDeCrypt(temp, []byte(PwdKey))
return res
}
func main() {
//aes加密
destring:=`{"name":"菜鸟教程11","site":"http://www.runoob.com"}`
deStr := EnPwdCode(destring)
fmt.Println(deStr) //4f4d74c15e0ad4afb323a17927b1176ecb0c95ecbdf8e776ceb093499e3ff4c45157b007ae7dff1688ac2d2bf9fef28644922a1b3bbc6ef5881cb1ed0dff298a
//aes解密
decodeStr := DePwdCode("4f4d74c15e0ad4afb323a17927b1176ecb0c95ecbdf8e776ceb093499e3ff4c45157b007ae7dff1688ac2d2bf9fef28644922a1b3bbc6ef5881cb1ed0dff298a")
fmt.Println(decodeStr) //{"name":"菜鸟教程11","site":"http://www.runoob.com"}
}
前端javascript的代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<script src="./aes.js"></script>
<body>
<script>
// var key1 = "1234567887654321";
var key1 = "linkbook1qaz*WSX";
// var plaintText = '"name"="lisi",age=18'; // 明文
var str = {
name: "菜鸟教程11",
site: "http://www.runoob.com"
}
var plaintText = JSON.stringify(str)
console.log(plaintText)
endata = encodeAes(plaintText)
//加密
function encodeAes(plaintTextStr) {
var key = CryptoJS.enc.Utf8.parse(key1);
var encryptedData = CryptoJS.AES.encrypt(plaintText, key, {
iv: key,
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.Pkcs7
});
// console.log("加密前：" + plaintText);
// console.log("加密后：" + encryptedData); //Pkcs7: WoCzvm6eZiM4/bx5o/CzGw==
// console.log("加密后 base64：" + encryptedData.ciphertext.toString(CryptoJS.enc.Base64));
encryptedData = encryptedData.ciphertext.toString();
console.log("加密后-no-hex：" + encryptedData);
return encryptedData
}
// 解密
endata1 = "46ce4f5bb33896c4c75a24a46c6f16c32991228f40831003b98acffe41fee255f892d68283b8a1b07a4dfd66622b6c50685854e918ac059d5d8e969b3b105c6b";
decodeAes(endata1)
function decodeAes(encryptedDataStr) {
var key = CryptoJS.enc.Utf8.parse(key1);
var encryptedHexStr = CryptoJS.enc.Hex.parse(encryptedDataStr);
// console.log("解密前hex：" + encryptedHexStr);
var encryptedBase64Str = CryptoJS.enc.Base64.stringify(encryptedHexStr);
// console.log("解密前：" + encryptedBase64Str);
var decryptedData = CryptoJS.AES.decrypt(encryptedBase64Str, key, {
iv: key,
mode: CryptoJS.mode.CBC,
padding: CryptoJS.pad.Pkcs7
});
var decryptedStr = decryptedData.toString(CryptoJS.enc.Utf8);
console.log("解密后:" + decryptedStr);
}
</script>
</body>
</html>
参考文章
