C# 与Java 通信DES 加密/解密

C#
EncryptString("42728ff2118430bdff5f9a189e0034ec","4;13pew*");

//DES加密
public string EncryptString(string sinputString, string Skey)  { 
byte[] data = Encoding.UTF8.GetBytes(sinputString); 
DESCryptoServiceProvider DES = new DESCryptoServiceProvider(); 
DES.Key = ASCIIEncoding.ASCII.GetBytes(Skey); 
DES.IV = ASCIIEncoding.ASCII.GetBytes(Skey);
        //DES.Mode = CipherMode.ECB;
DES.Mode = CipherMode.CBC;
        DES.Padding = PaddingMode.PKCS7;//补位

ICryptoTransform desEncrypt = DES.CreateEncryptor(); 
byte[] result = desEncrypt.TransformFinalBlock(data, 0, data.Length); 
return System.Convert.ToBase64String(result);
}
//////////////////////////////////////////////////////////////////////////////////
Java
//DES 解密
    public static String decrypt(String data) throws IOException, Exception {
        if (data == null)
            return null;
        BASE64Decoder decoder = new BASE64Decoder();
        byte[] buf = decoder.decodeBuffer(data);
        byte[] bt = decrypt(buf, KEY.getBytes("UTF-8"));
        return new String(bt);
    }

    private static byte[] decrypt(byte[] data, byte[] key) throws Exception {
        // 生成一个可信任的随机数源
        IvParameterSpec iv = new IvParameterSpec(key);
        // 从原始密钥数据创建DESKeySpec对象
        DESKeySpec dks = new DESKeySpec(key);

        // 创建一个密钥工厂，然后用它把DESKeySpec转换成SecretKey对象
        SecretKeyFactory keyFactory = SecretKeyFactory.getInstance("DES");
        SecretKey securekey = keyFactory.generateSecret(dks);

        // Cipher对象实际完成解密操作
        Cipher cipher = Cipher.getInstance("DES/CBC/PKCS5Padding");

        // 用密钥初始化Cipher对象
        cipher.init(Cipher.DECRYPT_MODE, securekey,iv);

        return cipher.doFinal(data);
          
    }

参照:http://www.cnblogs.com/Lawson/archive/2012/05/20/2510781.html