package com.zzg.common.utils;
|
|
import org.apache.commons.codec.binary.Base64;
|
import org.apache.commons.lang3.StringUtils;
|
|
import javax.crypto.Cipher;
|
import javax.crypto.spec.IvParameterSpec;
|
import javax.crypto.spec.SecretKeySpec;
|
|
|
/**
|
* aes 加密的工具类
|
* 1.存储 加密的秘钥key
|
* 2.实现 aes 加密
|
* 3.实现aes解密的功能
|
*/
|
public class AESUtil {
|
|
// 定义 aes 加密的key
|
// 密钥 必须是16位, 自定义,
|
// 如果不是16位, 则会出现InvalidKeyException: Illegal key size
|
// 解决方案有两种:
|
//1.需要安装Java Cryptography Extension (JCE) Unlimited Strength Jurisdiction Policy Files(可以在Oracle下载).
|
//2.设置设置key的长度为16个字母和数字的字符窜(128 Bit/8=16字符)就不报错了。
|
private static String key = "congzhouland8088";
|
|
//定义加密的编码
|
private static String charset = "utf-8";
|
|
// 偏移量
|
private static int offset = 16;
|
private static String transformation = "AES/CBC/PKCS5Padding";
|
private static String algorithm = "AES";
|
|
/**
|
* 加密
|
*
|
* @param content
|
* @return
|
*/
|
public static String encrypt(String content) {
|
return encrypt(content, key);
|
}
|
|
/**
|
* 解密
|
*
|
* @param content
|
* @return
|
*/
|
public static String decrypt(String content) {
|
return decrypt(content, key);
|
}
|
|
/**
|
* 加密
|
*
|
* @param content 需要加密的内容
|
* @param key 加密密码
|
* @return
|
*/
|
public static String encrypt(String content, String key) {
|
if (StringUtils.isEmpty(content)) {
|
return "";
|
}
|
try {
|
SecretKeySpec skey = new SecretKeySpec(key.getBytes(), algorithm);
|
IvParameterSpec iv = new IvParameterSpec(key.getBytes(), 0, offset);
|
Cipher cipher = Cipher.getInstance(transformation);
|
byte[] byteContent = content.getBytes(charset);
|
cipher.init(Cipher.ENCRYPT_MODE, skey, iv);// 初始化
|
byte[] result = cipher.doFinal(byteContent);
|
return new Base64().encodeToString(result); // 加密
|
} catch (Exception e) {
|
// LogUtil.exception(e);
|
}
|
return null;
|
}
|
|
/**
|
* AES(256)解密
|
*
|
* @param content 待解密内容
|
* @param key 解密密钥
|
* @return 解密之后
|
* @throws Exception
|
*/
|
public static String decrypt(String content, String key) {
|
try {
|
SecretKeySpec skey = new SecretKeySpec(key.getBytes(), algorithm);
|
IvParameterSpec iv = new IvParameterSpec(key.getBytes(), 0, offset);
|
Cipher cipher = Cipher.getInstance(transformation);
|
cipher.init(Cipher.DECRYPT_MODE, skey, iv);// 初始化
|
byte[] result = cipher.doFinal(new Base64().decode(content));
|
return new String(result); // 解密
|
} catch (Exception e) {
|
//LogUtil.exception(e);
|
}
|
return "";
|
}
|
|
public static void main(String[] args) {
|
System.out.println(encrypt("431222199408086874"));
|
}
|
}
|