前端JS后端nodeJs 实现加解密； 个人理解
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//说明： // 1.如果加密解密涉及到前端和后端，则这里的key要保持和后端的key一致 // 2.AES的算法模式有好几种（ECB,CBC,CFB,OFB），所以也要和后端保持一致 // 3.AES的补码方式有两种（PKS5，PKS7），所以也要和后端保持一致 // 4.AES的密钥长度有三种（128,192,256，默认是128），所以也要和后端保持一致 // 5.AES的加密结果编码方式有两种（base64和十六进制），具体怎么选择由自己定，但是加密和解密的编码方式要统////一
// 后端node js代码：
const express = require(‘express‘); //调用模块
const express = require(‘express‘); //调用模块
const app = express();
const server = app.listen(3002,function(){console.log(‘服务启动成功！‘);});
const crypto = require(‘crypto‘);
app.all(‘*‘, function(req, res, next) {
res.header("Access-Control-Allow-Origin", "*");
res.header("Access-Control-Allow-Headers", "X-Requested-With");
res.header("Access-Control-Allow-Methods","PUT,POST,GET,DELETE,OPTIONS");
res.header("X-Powered-By",‘ 3.2.1‘)
res.header("Content-Type", "text/plain");
next();
});
app.get(‘/‘, function (req, res) {
console.log(111)
res.send(‘1111‘)
});
/**
* AES加密的配置
* 1.密钥
* 2.偏移向量
* 3.算法模式CBC
* 4.补全值
*/
var AES_conf = {
key: getSecretKey(), //密钥
iv: ‘1012132405963708‘, //偏移向量
padding: ‘PKCS7Padding‘ //补全值 需和前端padding保持一致
}
/**
* 读取密钥key
* 更具当前客户端的版本vid、平台platform获取对应的key
*/
function getSecretKey(){
return "46cc793c53dc451b";
}
/**
* AES_128_CBC 加密
* 128位
* return base64
*/
function encryption(data) {
let key = AES_conf.key;
let iv = AES_conf.iv;
// let padding = AES_conf.padding;
var cipherChunks = [];
var cipher = crypto.createCipheriv(‘aes-128-ECB‘, key, ‘‘);
cipher.setAutoPadding(true);
cipherChunks.push(cipher.update(data, ‘utf8‘, ‘base64‘));
cipherChunks.push(cipher.final(‘base64‘));
return cipherChunks.join(‘‘);
}
/**
* 解密
* return utf8
*/
function decryption(data){
let key = AES_conf.key;
let iv = AES_conf.iv;
var cipherChunks = [];
var decipher = crypto.createDecipheriv(‘aes-128-ECB‘, key, ‘‘);
decipher.setAutoPadding(true);
cipherChunks.push(decipher.update(data, ‘base64‘, ‘utf8‘));
cipherChunks.push(decipher.final(‘utf8‘));
return cipherChunks.join(‘‘);
};
let decrypt=(data)=>{
let key = ‘46cc793c53dc451b‘;
let decipher = crypto.createDecipheriv(‘aes-128-ecb‘, key,"");
const buf1 = new Buffer(data,"base64").toString(‘hex‘);
let decrypted = decipher.update(buf1, ‘hex‘, ‘utf8‘);
decrypted += decipher.final(‘utf8‘);
return decrypted;
};
let encrypt = (data)=>{
let key = ‘46cc793c53dc451b‘;
let crypted=‘‘;
let cipher = crypto.createCipheriv(‘aes-128-ecb‘, key, "");
crypted = cipher.update(data, ‘utf8‘, ‘binary‘);
crypted += cipher.final(‘binary‘);
crypted = new Buffer(crypted, ‘binary‘).toString(‘base64‘);
return crypted;
}
console.log(encrypt(‘哈哈‘) );
console.log( encryption(‘哈哈‘) );
console.log( decrypt("1SYQyczGb5L4qmVybCV82g==") );
console.log( decryption("1SYQyczGb5L4qmVybCV82g=="));
前端代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="https://cdn.bootcss.com/crypto-js/3.3.0/crypto-js.min.js"></script>
<!-- <script src="https://cdn.bootcss.com/crypto-js/3.3.0/aes.js"></script> -->
</head>
<body>
<script>
function encrypt(word){
var key = CryptoJS.enc.Utf8.parse("46cc793c53dc451b");
var srcs = CryptoJS.enc.Utf8.parse(word);
var encrypted = CryptoJS.AES.encrypt(srcs, key, {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7 //和后端pkcs7 一致
});
return encrypted.toString();
}
function decrypt(word){
var key = CryptoJS.enc.Utf8.parse("46cc793c53dc451b");
var decrypt = CryptoJS.AES.decrypt(word, key, {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
});
return CryptoJS.enc.Utf8.stringify(decrypt).toString();
}
console.log( encrypt(‘哈哈‘) )
console.log( decrypt(‘1SYQyczGb5L4qmVybCV82g==‘) )
</script>
</body>
</html>
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