C#算法，求解对于JAVA算法

Question

如下是C#解密算法，求解对于JAVA解密算法 
private static string DecryptDes(string strString, string strKey)
    {
        TripleDESCryptoServiceProvider DES = new TripleDESCryptoServiceProvider();
        MD5CryptoServiceProvider hashMD5 = new MD5CryptoServiceProvider();
        DES.Key = hashMD5.ComputeHash(Encoding.ASCII.GetBytes(strKey));
        DES.Mode = CipherMode.ECB;
        ICryptoTransform DESDecrypt = DES.CreateDecryptor();
        string result = "";
        try
        {
            byte[] Buffer = Convert.FromBase64String(strString);
            result = Encoding.UTF8.GetString(DESDecrypt.TransformFinalBlock(Buffer, 0, Buffer.Length));
        }
        catch (System.Exception e)
        {
           // throw (new System.Exception("null", e));
            return result;
        }
        return result;    }
其中密钥是：a1+b2=c3
解密字符串为：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#Java算法

Answer 1

import java.nio.charset.Charset;
import java.security.MessageDigest;import javax.crypto.Cipher;
import javax.crypto.SecretKey;
import javax.crypto.SecretKeyFactory;
import javax.crypto.spec.DESedeKeySpec;import sun.misc.BASE64Decoder;
public class Test_8 { public static void main(String[] args) throws Exception {
final String encStr = "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";
final String keyStr = "a1+b2=c3";
BASE64Decoder decoder = new BASE64Decoder();
byte[] data = decoder.decodeBuffer(encStr);
MessageDigest md5 = MessageDigest.getInstance("MD5");
byte[] _key = md5.digest(keyStr.getBytes(Charset.forName("ASCII")));
byte[] key = new byte[24];
System.arraycopy(_key, 0, key, 0, _key.length);
System.arraycopy(_key, 0, key, 16, 8);
DESedeKeySpec dks = new DESedeKeySpec(key);
SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DESede");
SecretKey securekey = keyFactory.generateSecret(dks);
Cipher cipher = Cipher.getInstance("DESede/ECB/PKCS5Padding");
cipher.init(Cipher.DECRYPT_MODE, securekey);
byte[] retByte = cipher.doFinal(data);
String string = new String(retByte,Charset.forName("UTF-8"));
System.out.println(string);
}}