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采用的算法为AES算法
1. 编写加密工具类
package com.pibigstar.utils;
import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
/** * 前后端数据传输加密工具类 * @author pibigstar * */
public class AesEncryptUtils {
//可配置到Constant中,并读取配置文件注入
private static final String KEY = "abcdef0123456789";
//参数分别代表 算法名称/加密模式/数据填充方式
private static final String ALGORITHMSTR = "AES/ECB/PKCS5Padding";
/** * 加密 * @param content 加密的字符串 * @param encryptKey key值 * @return * @throws Exception */
public static String encrypt(String content, String encryptKey) throws Exception {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128);
Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
cipher.init(Cipher.ENCRYPT_MODE, new SecretKeySpec(encryptKey.getBytes(), "AES"));
byte[] b = cipher.doFinal(content.getBytes("utf-8"));
return Base64.encodeBase64String(b);
}
/** * 解密 * @param encryptStr 解密的字符串 * @param decryptKey 解密的key值 * @return * @throws Exception */
public static String decrypt(String encryptStr, String decryptKey) throws Exception {
KeyGenerator kgen = KeyGenerator.getInstance("AES");
kgen.init(128);
Cipher cipher = Cipher.getInstance(ALGORITHMSTR);
cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(decryptKey.getBytes(), "AES"));
byte[] encryptBytes = Base64.decodeBase64(encryptStr);
byte[] decryptBytes = cipher.doFinal(encryptBytes);
return new String(decryptBytes);
}
public static String encrypt(String content) throws Exception {
return encrypt(content, KEY);
}
public static String decrypt(String encryptStr) throws Exception {
return decrypt(encryptStr, KEY);
}
public static void main(String[] args) throws Exception {
String content = "派大星";
System.out.println("加密前:" + content);
String encrypt = encrypt(content, KEY);
System.out.println("加密后:" + encrypt);
String decrypt = decrypt(encrypt, KEY);
System.out.println("解密后:" + decrypt);
}
}
2. 前端
js 文件下载:https://pan.baidu.com/s/11LnXUnsMtGW5C8sycf2SDQ
导入 js 文件
<script type="text/javascript" src = "js/aes.js"></script>
<script type="text/javascript" src = "js/pad-zeropadding.js"></script>
<script type="text/javascript" src = "js/security.js"></script>
发送数据
function sendData() {
alert("发送的数据:"+Encrypt(JSON.stringify({name:"派大星"})));
$.ajax({
type: "POST",
url:"/save",
data:Encrypt(JSON.stringify({name:"派大星"})),
dataType:'json',
contentType: "application/json",
success: function(resData) {
alert("返回的数据:"+resData);
alert("解密之后:"+Decrypt(resData));
alert("解密之后转json对象:"+JSON.parse(Decrypt(resData)).name);
}
});
}
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