JAVA和C# 3DES加密解密

最近 一个项目.net 要调用JAVA的WEB SERVICE，数据采用3DES加密，涉及到两种语言3DES一致性的问题，
下面分享一下，
这里的KEY采用Base64编码，便用分发，因为Java的Byte范围为-128至127，c#的Byte范围是0-255
核心是确定Mode和Padding，关于这两个的意思可以搜索3DES算法相关文章
一个是C#采用CBC Mode，PKCS7 Padding,Java采用CBC Mode，PKCS5Padding Padding,
另一个是C#采用ECB Mode，PKCS7 Padding,Java采用ECB Mode，PKCS5Padding Padding,
Java的ECB模式不需要IV
对字符加密时，双方采用的都是UTF-8编码

下面是C#代码

 /// <summary>
    /// DES3加密解密
    /// </summary>
    public  class  Des3
    {
        #region CBC模式**

        /// <summary>
        /// DES3 CBC模式加密
        /// </summary>
        /// <param name="key">密钥</param>
        /// <param name="iv">IV</param>
        /// <param name="data">明文的byte数组</param>
        /// <returns>密文的byte数组</returns>
        public  static  byte [] Des3EncodeCBC(  byte [] key,  byte [] iv,  byte [] data )
        {
            //复制于MSDN

            try
            {
                // Create a MemoryStream.
                MemoryStream mStream =  new  MemoryStream();

                TripleDESCryptoServiceProvider tdsp =  new  TripleDESCryptoServiceProvider();
                tdsp.Mode = CipherMode.CBC;              //默认值
                tdsp.Padding = PaddingMode.PKCS7;        //默认值

                // Create a CryptoStream using the MemoryStream
                // and the passed key and initialization vector (IV).
                CryptoStream cStream =  new  CryptoStream( mStream,
                    tdsp.CreateEncryptor( key, iv ),
                    CryptoStreamMode.Write );

                // Write the byte array to the crypto stream and flush it.
                cStream.Write( data, 0, data.Length );
                cStream.FlushFinalBlock();

                // Get an array of bytes from the
                // MemoryStream that holds the
                // encrypted data.
                byte [] ret = mStream.ToArray();

                // Close the streams.
                cStream.Close();
                mStream.Close();

                // Return the encrypted buffer.
                return  ret;
            }
            catch  ( CryptographicException e )
            {
                Console.WriteLine(  "A Cryptographic error occurred: {0}" , e.Message );
                return  null ;
            }
        }

        /// <summary>
        /// DES3 CBC模式解密
        /// </summary>
        /// <param name="key">密钥</param>
        /// <param name="iv">IV</param>
        /// <param name="data">密文的byte数组</param>
        /// <returns>明文的byte数组</returns>
        public  static  byte [] Des3DecodeCBC(  byte [] key,  byte [] iv,  byte [] data )
        {
            try
            {
                // Create a new MemoryStream using the passed
                // array of encrypted data.
                MemoryStream msDecrypt =  new  MemoryStream( data );

                TripleDESCryptoServiceProvider tdsp =  new  TripleDESCryptoServiceProvider();
                tdsp.Mode = CipherMode.CBC;
                tdsp.Padding = PaddingMode.PKCS7;

                // Create a CryptoStream using the MemoryStream
                // and the passed key and initialization vector (IV).
                CryptoStream csDecrypt =  new  CryptoStream( msDecrypt,
                    tdsp.CreateDecryptor( key, iv ),
                    CryptoStreamMode.Read );

                // Create buffer to hold the decrypted data.
                byte [] fromEncrypt =  new  byte [data.Length];

                // Read the decrypted data out of the crypto stream
                // and place it into the temporary buffer.
                csDecrypt.Read( fromEncrypt, 0, fromEncrypt.Length );

                //Convert the buffer into a string and return it.
                return  fromEncrypt;
            }
            catch  ( CryptographicException e )
            {
                Console.WriteLine(  "A Cryptographic error occurred: {0}" , e.Message );
                return  null ;
            }
        }

        #endregion

        #region ECB模式

        /// <summary>
        /// DES3 ECB模式加密
        /// </summary>
        /// <param name="key">密钥</param>
        /// <param name="iv">IV(当模式为ECB时，IV无用)</param>
        /// <param name="str">明文的byte数组</param>
        /// <returns>密文的byte数组</returns>
        public  static  byte [] Des3EncodeECB(  byte [] key,  byte [] iv,  byte [] data )
        {
            try
            {
                // Create a MemoryStream.
                MemoryStream mStream =  new  MemoryStream();

                TripleDESCryptoServiceProvider tdsp =  new  TripleDESCryptoServiceProvider();
                tdsp.Mode = CipherMode.ECB;
                tdsp.Padding = PaddingMode.PKCS7;
                // Create a CryptoStream using the MemoryStream
                // and the passed key and initialization vector (IV).
                CryptoStream cStream =  new  CryptoStream( mStream,
                    tdsp.CreateEncryptor( key, iv ),
                    CryptoStreamMode.Write );

                // Write the byte array to the crypto stream and flush it.
                cStream.Write( data, 0, data.Length );
                cStream.FlushFinalBlock();

                // Get an array of bytes from the
                // MemoryStream that holds the
                // encrypted data.
                byte [] ret = mStream.ToArray();

                // Close the streams.
                cStream.Close();
                mStream.Close();

                // Return the encrypted buffer.
                return  ret;
            }
            catch  ( CryptographicException e )
            {
                Console.WriteLine(  "A Cryptographic error occurred: {0}" , e.Message );
                return  null ;
            }

        }

        /// <summary>
        /// DES3 ECB模式解密
        /// </summary>
        /// <param name="key">密钥</param>
        /// <param name="iv">IV(当模式为ECB时，IV无用)</param>
        /// <param name="str">密文的byte数组</param>
        /// <returns>明文的byte数组</returns>
        public  static  byte [] Des3DecodeECB(  byte [] key,  byte [] iv,  byte [] data )
        {
            try
            {
                // Create a new MemoryStream using the passed
                // array of encrypted data.
                MemoryStream msDecrypt =  new  MemoryStream( data );

                TripleDESCryptoServiceProvider tdsp =  new  TripleDESCryptoServiceProvider();
                tdsp.Mode = CipherMode.ECB;
                tdsp.Padding = PaddingMode.PKCS7;

                // Create a CryptoStream using the MemoryStream
                // and the passed key and initialization vector (IV).
                CryptoStream csDecrypt =  new  CryptoStream( msDecrypt,
                    tdsp.CreateDecryptor( key, iv ),
                    CryptoStreamMode.Read );

                // Create buffer to hold the decrypted data.
                byte [] fromEncrypt =  new  byte [data.Length];

                // Read the decrypted data out of the crypto stream
                // and place it into the temporary buffer.
                csDecrypt.Read( fromEncrypt, 0, fromEncrypt.Length );

                //Convert the buffer into a string and return it.
                return  fromEncrypt;
            }
            catch  ( CryptographicException e )
            {
                Console.WriteLine(  "A Cryptographic error occurred: {0}" , e.Message );
                return  null ;
            }
        }

        #endregion

        /// <summary>
        /// 类测试
        /// </summary>
        public  static  void  Test()
        {
            System.Text.Encoding utf8 = System.Text.Encoding.UTF8;

            //key为abcdefghijklmnopqrstuvwx的Base64编码
            byte [] key = Convert.FromBase64String(  "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4"  );
            byte [] iv =  new  byte [] { 1, 2, 3, 4, 5, 6, 7, 8 };       //当模式为ECB时，IV无用
            byte [] data = utf8.GetBytes(  "中国ABCabc123"  );

            System.Console.WriteLine(  "ECB模式:"  );
            byte [] str1 = Des3.Des3EncodeECB( key, iv, data );
            byte [] str2 = Des3.Des3DecodeECB( key, iv, str1 );
            System.Console.WriteLine( Convert.ToBase64String( str1 ) );
            System.Console.WriteLine( System.Text.Encoding.UTF8.GetString( str2 ) );

            System.Console.WriteLine();

            System.Console.WriteLine(  "CBC模式:"  );
            byte [] str3 = Des3.Des3EncodeCBC( key, iv, data );
            byte [] str4 = Des3.Des3DecodeCBC( key, iv, str3 );
            System.Console.WriteLine( Convert.ToBase64String( str3 ) );
            System.Console.WriteLine( utf8.GetString( str4 ) );

            System.Console.WriteLine();

        }

    }


接着是Java代码

import  java.security.Key;

import  javax.crypto.Cipher;
import  javax.crypto.SecretKeyFactory;
import  javax.crypto.spec.DESedeKeySpec;
import  javax.crypto.spec.IvParameterSpec;

import  sun.misc.BASE64Decoder;
import  sun.misc.BASE64Encoder;

public  class  Des3 {
    public  static  void  main(String[] args)  throws  Exception {

        byte [] key= new  BASE64Decoder().decodeBuffer( "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4" );
        byte [] keyiv = {  1 ,  2 ,  3 ,  4 ,  5 ,  6 ,  7 ,  8  };

        byte [] data= "中国ABCabc123" .getBytes( "UTF-8" );

        System.out.println( "ECB加密解密" );
        byte [] str3 = des3EncodeECB(key,data );
        byte [] str4 = ees3DecodeECB(key, str3);
        System.out.println( new  BASE64Encoder().encode(str3));
        System.out.println( new  String(str4,  "UTF-8" ));

        System.out.println();

        System.out.println( "CBC加密解密" );
        byte [] str5 = des3EncodeCBC(key, keyiv, data);
        byte [] str6 = des3DecodeCBC(key, keyiv, str5);
        System.out.println( new  BASE64Encoder().encode(str5));
        System.out.println( new  String(str6,  "UTF-8" ));

    }

    /**
     * ECB加密,不要IV
     * @param key 密钥
     * @param data 明文
     * @return Base64编码的密文
     * @throws Exception
     */
    public  static  byte [] des3EncodeECB( byte [] key,  byte [] data)
            throws  Exception {

        Key deskey =  null ;
        DESedeKeySpec spec =  new  DESedeKeySpec(key);
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance( "desede" );
        deskey = keyfactory.generateSecret(spec);

        Cipher cipher = Cipher.getInstance( "desede"  +  "/ECB/PKCS5Padding" );

        cipher.init(Cipher.ENCRYPT_MODE, deskey);
        byte [] bOut = cipher.doFinal(data);

        return  bOut;
    }

    /**
     * ECB解密,不要IV
     * @param key 密钥
     * @param data Base64编码的密文
     * @return 明文
     * @throws Exception
     */
    public  static  byte [] ees3DecodeECB( byte [] key,  byte [] data)
            throws  Exception {

        Key deskey =  null ;
        DESedeKeySpec spec =  new  DESedeKeySpec(key);
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance( "desede" );
        deskey = keyfactory.generateSecret(spec);

        Cipher cipher = Cipher.getInstance( "desede"  +  "/ECB/PKCS5Padding" );

        cipher.init(Cipher.DECRYPT_MODE, deskey);

        byte [] bOut = cipher.doFinal(data);

        return  bOut;

    }

    /**
     * CBC加密
     * @param key 密钥
     * @param keyiv IV
     * @param data 明文
     * @return Base64编码的密文
     * @throws Exception
     */
    public  static  byte [] des3EncodeCBC( byte [] key,  byte [] keyiv,  byte [] data)
            throws  Exception {

        Key deskey =  null ;
        DESedeKeySpec spec =  new  DESedeKeySpec(key);
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance( "desede" );
        deskey = keyfactory.generateSecret(spec);

        Cipher cipher = Cipher.getInstance( "desede"  +  "/CBC/PKCS5Padding" );
        IvParameterSpec ips =  new  IvParameterSpec(keyiv);
        cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);
        byte [] bOut = cipher.doFinal(data);

        return  bOut;
    }

    /**
     * CBC解密
     * @param key 密钥
     * @param keyiv IV
     * @param data Base64编码的密文
     * @return 明文
     * @throws Exception
     */
    public  static  byte [] des3DecodeCBC( byte [] key,  byte [] keyiv,  byte [] data)
            throws  Exception {

        Key deskey =  null ;
        DESedeKeySpec spec =  new  DESedeKeySpec(key);
        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance( "desede" );
        deskey = keyfactory.generateSecret(spec);

        Cipher cipher = Cipher.getInstance( "desede"  +  "/CBC/PKCS5Padding" );
        IvParameterSpec ips =  new  IvParameterSpec(keyiv);

        cipher.init(Cipher.DECRYPT_MODE, deskey, ips);

        byte [] bOut = cipher.doFinal(data);

        return  bOut;

    }


下面是运行结果 ECB模式: rmWB4+r9Ug93WI0KAEuMig== 中国ABCabc123 CBC模式: 4aabWF8UFour/vNfnzJrjw== 中国ABCabc123