JAVA和C#实现AES加密解密，互通互用

JAVA版本（使用AESUtils工具类）

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;


public class AESUtils {

    //实际的加密解密操作
    private static byte[] Operation(byte[] src,String key,int mode) throws Exception{
        if (key==null) {
            System.out.println("Key不能为空");
            return null;
        }
        if (key.length()!=16) {
            System.out.println("Key需要16位长度");
            return null;
        }

        byte[] raw=key.getBytes("utf-8");
        SecretKeySpec keySpec=new SecretKeySpec(raw, "AES");
        Cipher cipher=Cipher.getInstance("AES/ECB/PKCS5Padding");
        cipher.init(mode, keySpec);
        byte[] encrypted=cipher.doFinal(src);
        return encrypted;
    }

    public static byte[] Encrypt(byte[] src,String key) throws Exception{
        return Operation(src, key, Cipher.ENCRYPT_MODE);
    }

    public static byte[] Decrypt(byte[] src,String key) throws Exception{
        return Operation(src, key, Cipher.DECRYPT_MODE);
    }

}

C#版本（AES工具类）

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Security.Cryptography;
using System.IO;

namespace AESTest
{
    class AESHelper
    {

        private static byte[] Operation(byte[] src,string strKey,bool isEncrypt)
        {
            if (string.IsNullOrEmpty(strKey))
                return null;

            RijndaelManaged rm = new RijndaelManaged
            {
                Key = Encoding.UTF8.GetBytes(strKey),
                Mode = CipherMode.ECB,
                Padding = PaddingMode.PKCS7
            };
            ICryptoTransform cTransform;

            if(isEncrypt)
            {
                cTransform = rm.CreateEncryptor();
            }
            else
            {
                cTransform = rm.CreateDecryptor();
            }

            byte[] resultArray = cTransform.TransformFinalBlock(src, 0, src.Length);
            return resultArray;
        }

        public static byte[] Encrypt(byte[] src, string strKey)
        {
            return Operation(src, strKey, true);
        }

        public static byte[] Decrypt(byte[] src, string strKey)
        {
            return Operation(src, strKey, false);
        }
    }
}