原 AescbcUtils 加密工具类

版权声明：本文为博主原创文章，请尊重他人的劳动成果，转载请附上原文出处链接和本声明。
本文链接：https://www.91mszl.com/zhangwuji/article/details/1050

代码:

package com.mszl.utils;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

public class AescbcUtils {
	
	// 加密
    public static String Encrypt(String sSrc, String sKey, String ivParameter) throws Exception {
        Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
        byte[] raw = sKey.getBytes();
        SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
        IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());//使用CBC模式，需要一个向量iv，可增加加密算法的强度
        cipher.init(Cipher.ENCRYPT_MODE, skeySpec, iv);
        byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
        return new BASE64Encoder().encode(encrypted);//此处使用BASE64做转码。
    }

    // 解密
    public static String Decrypt(String sSrc, String sKey, String ivParameter) throws Exception {
        try {
            byte[] raw = sKey.getBytes();
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/CBC/PKCS5Padding");
            IvParameterSpec iv = new IvParameterSpec(ivParameter.getBytes());
            cipher.init(Cipher.DECRYPT_MODE, skeySpec, iv);
            byte[] encrypted1 = new BASE64Decoder().decodeBuffer(sSrc); // 先用base64解密
            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original,"utf-8");
            return originalString;
        } catch (Exception ex) {
            return null;
        }
    }
 
}