package com.koow.kkwwo.aes.util;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import org.apache.commons.codec.binary.Base64;
/**
* AES算法(加密算法:MCRYPT_RIJNDAEL_128,算法模式:MCRYPT_MODE_ECB,补码方式:PKCS5Padding,密钥为长度32个字符)
* @author Koow
* 2018-04-19
*/
public class AES2 {
/**
* 加密
* @param sSrc
* 加密字段
* @param sKey
* key秘钥
* @param state
* 1:加密完成后Base64转码
* 2: 加密完成后二进制转换成16进制
* @return
* @throws Exception
*/
public static String Encrypt(String sSrc, String sKey,Integer state) throws Exception {
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");//"算法/模式/补码方式"
cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
return state==1?new Base64().encodeToString(encrypted):AES.parseByte2HexStr(encrypted);
}
/**
* 解密
* @param sSrc
* 解密字段
* @param sKey
* key秘钥
* @param state
* 1:解密前Base64解码
* 2: 解密前将16进制转换为二进制
* @return
* @throws Exception
*/
public static String Decrypt(String sSrc, String sKey,Integer state) throws Exception {
try {
// 判断Key是否正确
if (sKey == null) {
System.out.print("Key为空null");
return null;
}
byte[] raw = sKey.getBytes("utf-8");
SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, skeySpec);
byte[] encrypted1 =state==1?new Base64().decode(sSrc):AES.parseHexStr2Byte(sSrc);
try {
byte[] original = cipher.doFinal(encrypted1);
String originalString = new String(original,"utf-8");
return originalString;
} catch (Exception e) {
System.out.println(e.toString());
return null;
}
} catch (Exception ex) {
System.out.println(ex.toString());
return null;
}
}
public static void main(String[] args) throws Exception {
/*
* 此处使用AES-128-ECB加密模式,key需要为16位。
*/
String cKey = "d42fdd4a115d5ac6d45fb8f1f3288d35";
// 需要加密的字串
String cSrc = "koow";
System.out.println(cSrc);
// 加密
String enString = AES2.Encrypt(cSrc, cKey,2);
System.out.println("加密后的字串是:" + enString);
// 解密
String DeString = AES2.Decrypt(enString, cKey,2);
System.out.println("解密后的字串是:" + DeString);
}
}
由于采用的32位key,但java默认支持16位,请去以下地址下载扩展包
下载完成后jce_policy-8.zip 的一个压缩包,解压后将其中的两个jar替换到你项目java环境下的\jre\lib\security 目录
或者直接下载我上传的压缩包,地址如下: