package com.thinkgem.jeesite.modules.emindsoft.util;
import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
public class AesEncodeUtil {
//初始向量
public static final String VIPARA = "aabbccddeeffgghh"; //AES 为16bytes. DES 为8bytes
//编码方式
public static final String bm = "UTF-8";
//私钥
private static final String ASE_KEY="aabbccddeeffgghh"; //AES固定格式为128/192/256 bits.即:16/24/32bytes。DES固定格式为128bits,即8bytes。
/**
* 加密
*
* @param cleartext
* @return
*/
public static String encrypt(String cleartext) {
//加密方式: AES128(CBC/PKCS5Padding) + Base64, 私钥:aabbccddeeffgghh
try {
IvParameterSpec zeroIv = new IvParameterSpec(VIPARA.getBytes());
//两个参数,第一个为私钥字节数组, 第二个为加密方式 AES或者DES
SecretKeySpec key = new SecretKeySpec(ASE_KEY.getBytes(), "AES");
//实例化加密类,参数为加密方式,要写全
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding"); //PKCS5Padding比PKCS7Padding效率高,PKCS7Padding可支持IOS加解密
//初始化,此方法可以采用三种方式,按加密算法要求来添加。(1)无第三个参数(2)第三个参数为SecureRandom random = new SecureRandom();中random对象,随机数。(AES不可采用这种方法)(3)采用此代码中的IVParameterSpec
cipher.init(Cipher.ENCRYPT_MODE, key, zeroIv);
//加密操作,返回加密后的字节数组,然后需要编码。主要编解码方式有Base64, HEX, UUE,7bit等等。此处看服务器需要什么编码方式
byte[] encryptedData = cipher.doFinal(cleartext.getBytes(bm));
return new BASE64Encoder().encode(encryptedData);
} catch (Exception e) {
e.printStackTrace();
return "";
}
}
/**
* 解密
*
* @param encrypted
* @return
*/
public static String decrypt(String encrypted) {
try {
byte[] byteMi = new BASE64Decoder().decodeBuffer(encrypted);
IvParameterSpec zeroIv = new IvParameterSpec(VIPARA.getBytes());
SecretKeySpec key = new SecretKeySpec(
ASE_KEY.getBytes(), "AES");
Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
//与加密时不同MODE:Cipher.DECRYPT_MODE
cipher.init(Cipher.DECRYPT_MODE, key, zeroIv);
byte[] decryptedData = cipher.doFinal(byteMi);
return new String(decryptedData, bm);
} catch (Exception e) {
e.printStackTrace();
return "";
}
}
/**
* 测试
*
* @param args
* @throws Exception
*/
public static void main(String[] args) throws Exception {
String content = "98.5674{“”:\"nishi\",\"我——-!@#¥%……&*$\":\"\"}";
// 加密
System.out.println("加密前:" + content);
String encryptResult = encrypt(content);
System.out.println("加密后:" + new String(encryptResult));
// 解密
String decryptResult = decrypt(encryptResult);
System.out.println("解密后:" + new String(decryptResult));
}
}
网盘/工作/总结////