title: “AES加密和解密-CryptoJS和Java”
url: “https://wsk1103.github.io/”
tags:
- 学习笔记
-
算法
AES（Advanced Encryption Standard，高级加密标准）是一种对称加密算法，加密和解密使用相同的密钥
CryptoJS：https://github.com/brix/crypto-js
使用16进制加密解密
1. 前端AES加密，后端AES解密
前端
其中和加密相关的js从GitHub下载。
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>AES TEST</title>
</head>
<body>
<p>go</p>
<script src="core.js"></script>
<script src="cipher-core.js"></script>
<script src="mode-ecb.js"></script>
<script src="aes.js"></script>
<script>
var key = CryptoJS.enc.Utf8.parse("1538663015386630");
var plaintText = 'wsk-test'; // 明文
var encrypted = "a551e4d54cfc396cc93c89dd55f6587c";
var encryptedData = CryptoJS.AES.encrypt(plaintText, key, {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
});
var a = plaintText + '';//加密前：
var b = encryptedData + '';//加密后：
console.log("加密前："+plaintText + '');
console.log("加密后："+encryptedData + '');
alert("加密前："+a);
alert("加密后："+b);
</script>
</body>
</html>
后台解密
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/**
* PKCS5Padding -- Pkcs7 两种padding方法都可以
*
* @param content 69f23a1a98ca3d406692742ab7033f3b 16进制
* @param key 1538663015386630
* @return masget2019
*/
public static String decryptAES(String content, String key) {
try {
SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
// "算法/模式/补码方式"
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
//解密后是16进制
return new String(cipher.doFinal(parseHexStr2Byte(content)));
} catch (Exception e) {
log.error(String.format("解密失败:，content：%s, key: %s", content, key));
}
return content;
}
/**
* 将16进制转换为二进制
*
* @param hexStr
* @return
*/
private static byte[] parseHexStr2Byte(String hexStr) {
if (hexStr.length() < 1) {
return null;
}
byte[] result = new byte[hexStr.length() / 2];
for (int i = 0; i < hexStr.length() / 2; i++) {
int high = Integer.parseInt(hexStr.substring(i * 2, i * 2 + 1), 16);
int low = Integer.parseInt(hexStr.substring(i * 2 + 1, i * 2 + 2), 16);
result[i] = (byte) (high * 16 + low);
}
return result;
}
后台AES加密，前端AES解密
后台加密
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/**
* 加密
*
* @param content
* @param key
* @return
*/
public static String encryptAES(String content, String key) {
try {
SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
// "算法/模式/补码方式"
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] result = cipher.doFinal(content.getBytes(StandardCharsets.UTF_8));
return parseByte2HexStr(result);
} catch (Exception e) {
log.error(String.format("加密失败:，content：%s, key: %s", content, key));
}
return content;
}
/**
* 将二进制转换成16进制
*
* @param buf
* @return
*/
public static String parseByte2HexStr(byte[] buf) {
StringBuilder sb = new StringBuilder();
for (byte b : buf) {
String hex = Integer.toHexString(b & 0xFF);
if (hex.length() == 1) {
hex = '0' + hex;
}
sb.append(hex.toUpperCase());
}
return sb.toString();
}
前端解密
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<script src="core.js"></script>
<script src="enc-base64.js"></script>
<script src="cipher-core.js"></script>
<script src="mode-ecb.js"></script>
<script src="aes.js"></script>
<body>
<script>
var key = CryptoJS.enc.Utf8.parse("1538663015386630"); //秘钥
var wsk = "a551e4d54cfc396cc93c89dd55f6587c"; //后台返回的加密字符串
var encryptedHexStr = CryptoJS.enc.Hex.parse(wsk);//a551e4d54cfc396cc93c89dd55f6587c
var encryptedBase64Str = CryptoJS.enc.Base64.stringify(encryptedHexStr);
var decryptedData = CryptoJS.AES.decrypt(encryptedBase64Str, key, {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
});
var decryptedStr = decryptedData.toString(CryptoJS.enc.Utf8);
console.log("解密后:"+decryptedStr);
</script>
</body>
</html>
注意，前端解密中的 enc-base64.js 不能导入到加密的html里面，否则加密后的结果不是 16进制的形式
使用base64加密解密
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/**
* 加密，生成的16进制的字符串
*
* @param content
* @param key
* @return
*/
public static String encryptAES(String content, String key) {
try {
SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
// "算法/模式/补码方式"
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] result = cipher.doFinal(content.getBytes(StandardCharsets.UTF_8));
return parseByte2HexStr(result);
} catch (Exception e) {
log.error(String.format("加密失败:，content：%s, key: %s", content, key));
}
return content;
}
/**
* 加密，生成的base64的字符串
*
* @param content
* @param key
* @return
*/
public static String encryptAESWithBase64(String content, String key) {
try {
SecretKeySpec skeySpec = new SecretKeySpec(key.getBytes(StandardCharsets.UTF_8), "AES");
// "算法/模式/补码方式"
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] result = cipher.doFinal(content.getBytes(StandardCharsets.UTF_8));
return Base64.encodeBase64String(result);
} catch (Exception e) {
log.error(String.format("加密失败:，content：%s, key: %s", content, key));
}
return content;
}
前端加密
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>AES TEST</title>
</head>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/core.js"></script>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/enc-base64.js"></script>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/cipher-core.js"></script>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/mode-ecb.js"></script>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/aes.js"></script>
<script
src="http://code.jquery.com/jquery-2.2.4.min.js"
integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44="
crossorigin="anonymous"></script>
<body>
加密前：<div id="one"></div>
<br/>
秘钥：<div id="two"></div>
<br/>
加密后：<div id="three"></div>
<script>
var tt = "1538663015386630";
var key = CryptoJS.enc.Utf8.parse(tt); //秘钥
var plaintText = 'test'; // 明文
var encryptedData = CryptoJS.AES.encrypt(plaintText, key, {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
});
var a = plaintText + '';//加密前：
var b = encryptedData + '';//加密后：
console.log("加密前："+plaintText + '');
console.log("加密后："+encryptedData + '');
//alert("加密前："+a);
//alert("加密后："+b);
$(document).ready(function(){
$("#one").text(a);
});
$(document).ready(function(){
$("#two").text(tt);
});
$(document).ready(function(){
$("#three").text(b);
});
</script>
</body>
</html>
前端解密
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/core.js"></script>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/enc-base64.js"></script>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/cipher-core.js"></script>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/mode-ecb.js"></script>
<script src="http://raw.githack.com/brix/crypto-js/develop/src/aes.js"></script>
<script
src="http://code.jquery.com/jquery-2.2.4.min.js"
integrity="sha256-BbhdlvQf/xTY9gja0Dq3HiwQF8LaCRTXxZKRutelT44="
crossorigin="anonymous"></script>
<body>
解密前：<div id="one"></div>
<br/>
秘钥：<div id="two"></div>
<br/>
解密后：<div id="three"></div>
<script>
var tt = "1538663015386630";
var key = CryptoJS.enc.Utf8.parse(tt); //秘钥
var wsk = "a551e4d54cfc396cc93c89dd55f6587c"; //后台返回的加密字符串
//alert("解密前：" + wsk);
var encryptedHexStr = CryptoJS.enc.Hex.parse(wsk);
var encryptedBase64Str = CryptoJS.enc.Base64.stringify(encryptedHexStr);
var decryptedData = CryptoJS.AES.decrypt(encryptedBase64Str, key, {
mode: CryptoJS.mode.ECB,
padding: CryptoJS.pad.Pkcs7
});
var decryptedStr = decryptedData.toString(CryptoJS.enc.Utf8);
//alert("解密后：" + decryptedStr);
console.log("解密后:"+decryptedStr);
$(document).ready(function(){
$("#one").text(wsk);
});
$(document).ready(function(){
$("#two").text(tt);
});
$(document).ready(function(){
$("#three").text(decryptedStr);
});
</script>
</body>
</html>
