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

01./// <summary>  02./// DES3加密解密  03./// </summary>  04.public class Des3  05.{  06.    #region CBC模式**  07.    /// <summary>  08.    /// DES3 CBC模式加密  09.    /// </summary>  10.    /// <param name="key">密钥</param>  11.    /// <param name="iv">IV</param>  12.    /// <param name="data">明文的byte数组</param>  13.    /// <returns>密文的byte数组</returns>  14.    public static byte[] Des3EncodeCBC( byte[] key, byte[] iv, byte[] data )  15.    {  16.        //复制于MSDN  17.        try  18.        {  19.            // Create a MemoryStream.  20.            MemoryStream mStream = new MemoryStream();  21.            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();  22.            tdsp.Mode = CipherMode.CBC;             //默认值  23.            tdsp.Padding = PaddingMode.PKCS7;       //默认值  24.            // Create a CryptoStream using the MemoryStream   25.            // and the passed key and initialization vector (IV).  26.            CryptoStream cStream = new CryptoStream( mStream,  27.                tdsp.CreateEncryptor( key, iv ),  28.                CryptoStreamMode.Write );  29.            // Write the byte array to the crypto stream and flush it.  30.            cStream.Write( data, 0, data.Length );  31.            cStream.FlushFinalBlock();  32.            // Get an array of bytes from the   33.            // MemoryStream that holds the   34.            // encrypted data.  35.            byte[] ret = mStream.ToArray();  36.            // Close the streams.  37.            cStream.Close();  38.            mStream.Close();  39.            // Return the encrypted buffer.  40.            return ret;  41.        }  42.        catch ( CryptographicException e )  43.        {  44.            Console.WriteLine( "A Cryptographic error occurred: {0}", e.Message );  45.            return null;  46.        }  47.    }  48.    /// <summary>  49.    /// DES3 CBC模式解密  50.    /// </summary>  51.    /// <param name="key">密钥</param>  52.    /// <param name="iv">IV</param>  53.    /// <param name="data">密文的byte数组</param>  54.    /// <returns>明文的byte数组</returns>  55.    public static byte[] Des3DecodeCBC( byte[] key, byte[] iv, byte[] data )  56.    {  57.        try  58.        {  59.            // Create a new MemoryStream using the passed   60.            // array of encrypted data.  61.            MemoryStream msDecrypt = new MemoryStream( data );  62.            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();  63.            tdsp.Mode = CipherMode.CBC;  64.            tdsp.Padding = PaddingMode.PKCS7;  65.            // Create a CryptoStream using the MemoryStream   66.            // and the passed key and initialization vector (IV).  67.            CryptoStream csDecrypt = new CryptoStream( msDecrypt,  68.                tdsp.CreateDecryptor( key, iv ),  69.                CryptoStreamMode.Read );  70.            // Create buffer to hold the decrypted data.  71.            byte[] fromEncrypt = new byte[data.Length];  72.            // Read the decrypted data out of the crypto stream  73.            // and place it into the temporary buffer.  74.            csDecrypt.Read( fromEncrypt, 0, fromEncrypt.Length );  75.            //Convert the buffer into a string and return it.  76.            return fromEncrypt;  77.        }  78.        catch ( CryptographicException e )  79.        {  80.            Console.WriteLine( "A Cryptographic error occurred: {0}", e.Message );  81.            return null;  82.        }  83.    }  84.    #endregion  85.    #region ECB模式  86.    /// <summary>  87.    /// DES3 ECB模式加密  88.    /// </summary>  89.    /// <param name="key">密钥</param>  90.    /// <param name="iv">IV(当模式为ECB时，IV无用)</param>  91.    /// <param name="str">明文的byte数组</param>  92.    /// <returns>密文的byte数组</returns>  93.    public static byte[] Des3EncodeECB( byte[] key, byte[] iv, byte[] data )  94.    {  95.        try  96.        {  97.            // Create a MemoryStream.  98.            MemoryStream mStream = new MemoryStream();  99.            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();  100.            tdsp.Mode = CipherMode.ECB;  101.            tdsp.Padding = PaddingMode.PKCS7;  102.            // Create a CryptoStream using the MemoryStream   103.            // and the passed key and initialization vector (IV).  104.            CryptoStream cStream = new CryptoStream( mStream,  105.                tdsp.CreateEncryptor( key, iv ),  106.                CryptoStreamMode.Write );  107.            // Write the byte array to the crypto stream and flush it.  108.            cStream.Write( data, 0, data.Length );  109.            cStream.FlushFinalBlock();  110.            // Get an array of bytes from the   111.            // MemoryStream that holds the   112.            // encrypted data.  113.            byte[] ret = mStream.ToArray();  114.            // Close the streams.  115.            cStream.Close();  116.            mStream.Close();  117.            // Return the encrypted buffer.  118.            return ret;  119.        }  120.        catch ( CryptographicException e )  121.        {  122.            Console.WriteLine( "A Cryptographic error occurred: {0}", e.Message );  123.            return null;  124.        }  125.    }  126.    /// <summary>  127.    /// DES3 ECB模式解密  128.    /// </summary>  129.    /// <param name="key">密钥</param>  130.    /// <param name="iv">IV(当模式为ECB时，IV无用)</param>  131.    /// <param name="str">密文的byte数组</param>  132.    /// <returns>明文的byte数组</returns>  133.    public static byte[] Des3DecodeECB( byte[] key, byte[] iv, byte[] data )  134.    {  135.        try  136.        {  137.            // Create a new MemoryStream using the passed   138.            // array of encrypted data.  139.            MemoryStream msDecrypt = new MemoryStream( data );  140.            TripleDESCryptoServiceProvider tdsp = new TripleDESCryptoServiceProvider();  141.            tdsp.Mode = CipherMode.ECB;  142.            tdsp.Padding = PaddingMode.PKCS7;  143.            // Create a CryptoStream using the MemoryStream   144.            // and the passed key and initialization vector (IV).  145.            CryptoStream csDecrypt = new CryptoStream( msDecrypt,  146.                tdsp.CreateDecryptor( key, iv ),  147.                CryptoStreamMode.Read );  148.            // Create buffer to hold the decrypted data.  149.            byte[] fromEncrypt = new byte[data.Length];  150.            // Read the decrypted data out of the crypto stream  151.            // and place it into the temporary buffer.  152.            csDecrypt.Read( fromEncrypt, 0, fromEncrypt.Length );  153.            //Convert the buffer into a string and return it.  154.            return fromEncrypt;  155.        }  156.        catch ( CryptographicException e )  157.        {  158.            Console.WriteLine( "A Cryptographic error occurred: {0}", e.Message );  159.            return null;  160.        }  161.    }  162.    #endregion  163.    /// <summary>  164.    /// 类测试  165.    /// </summary>  166.    public static void Test()  167.    {  168.        System.Text.Encoding utf8 = System.Text.Encoding.UTF8;  169.        //key为abcdefghijklmnopqrstuvwx的Base64编码  170.        byte[] key = Convert.FromBase64String( "YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4" );  171.        byte[] iv = new byte[] { 1, 2, 3, 4, 5, 6, 7, 8 };      //当模式为ECB时，IV无用  172.        byte[] data = utf8.GetBytes( "中国ABCabc123" );  173.        System.Console.WriteLine( "ECB模式:" );  174.        byte[] str1 = Des3.Des3EncodeECB( key, iv, data );  175.        byte[] str2 = Des3.Des3DecodeECB( key, iv, str1 );  176.        System.Console.WriteLine( Convert.ToBase64String( str1 ) );  177.        System.Console.WriteLine( System.Text.Encoding.UTF8.GetString( str2 ) );  178.        System.Console.WriteLine();  179.        System.Console.WriteLine( "CBC模式:" );  180.        byte[] str3 = Des3.Des3EncodeCBC( key, iv, data );  181.        byte[] str4 = Des3.Des3DecodeCBC( key, iv, str3 );  182.        System.Console.WriteLine( Convert.ToBase64String( str3 ) );  183.        System.Console.WriteLine( utf8.GetString( str4 ) );  184.        System.Console.WriteLine();  185.    }  186.}

接着是Java代码

01.import java.security.Key;  02.import javax.crypto.Cipher;  03.import javax.crypto.SecretKeyFactory;  04.import javax.crypto.spec.DESedeKeySpec;  05.import javax.crypto.spec.IvParameterSpec;  06.import sun.misc.BASE64Decoder;  07.import sun.misc.BASE64Encoder;  08.public class Des3 {  09.    public static void main(String[] args) throws Exception {  10.        byte[] key=new BASE64Decoder().decodeBuffer("YWJjZGVmZ2hpamtsbW5vcHFyc3R1dnd4");  11.        byte[] keyiv = { 1, 2, 3, 4, 5, 6, 7, 8 };  12.        byte[] data="中国ABCabc123".getBytes("UTF-8");  13.          14.        System.out.println("ECB加密解密");  15.        byte[] str3 = des3EncodeECB(key,data );  16.        byte[] str4 = ees3DecodeECB(key, str3);  17.        System.out.println(new BASE64Encoder().encode(str3));  18.        System.out.println(new String(str4, "UTF-8"));  19.        System.out.println();  20.        System.out.println("CBC加密解密");  21.        byte[] str5 = des3EncodeCBC(key, keyiv, data);  22.        byte[] str6 = des3DecodeCBC(key, keyiv, str5);  23.        System.out.println(new BASE64Encoder().encode(str5));  24.        System.out.println(new String(str6, "UTF-8"));  25.    }  26.    /** 27.     * ECB加密,不要IV 28.     * @param key 密钥 29.     * @param data 明文 30.     * @return Base64编码的密文 31.     * @throws Exception 32.     */  33.    public static byte[] des3EncodeECB(byte[] key, byte[] data)  34.            throws Exception {  35.        Key deskey = null;  36.        DESedeKeySpec spec = new DESedeKeySpec(key);  37.        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  38.        deskey = keyfactory.generateSecret(spec);  39.        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");  40.        cipher.init(Cipher.ENCRYPT_MODE, deskey);  41.        byte[] bOut = cipher.doFinal(data);  42.        return bOut;  43.    }  44.    /** 45.     * ECB解密,不要IV 46.     * @param key 密钥 47.     * @param data Base64编码的密文 48.     * @return 明文 49.     * @throws Exception 50.     */  51.    public static byte[] ees3DecodeECB(byte[] key, byte[] data)  52.            throws Exception {  53.        Key deskey = null;  54.        DESedeKeySpec spec = new DESedeKeySpec(key);  55.        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  56.        deskey = keyfactory.generateSecret(spec);  57.        Cipher cipher = Cipher.getInstance("desede" + "/ECB/PKCS5Padding");  58.        cipher.init(Cipher.DECRYPT_MODE, deskey);  59.        byte[] bOut = cipher.doFinal(data);  60.        return bOut;  61.    }  62.    /** 63.     * CBC加密 64.     * @param key 密钥 65.     * @param keyiv IV 66.     * @param data 明文 67.     * @return Base64编码的密文 68.     * @throws Exception 69.     */  70.    public static byte[] des3EncodeCBC(byte[] key, byte[] keyiv, byte[] data)  71.            throws Exception {  72.        Key deskey = null;  73.        DESedeKeySpec spec = new DESedeKeySpec(key);  74.        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  75.        deskey = keyfactory.generateSecret(spec);  76.        Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");  77.        IvParameterSpec ips = new IvParameterSpec(keyiv);  78.        cipher.init(Cipher.ENCRYPT_MODE, deskey, ips);  79.        byte[] bOut = cipher.doFinal(data);  80.        return bOut;  81.    }  82.    /** 83.     * CBC解密 84.     * @param key 密钥 85.     * @param keyiv IV 86.     * @param data Base64编码的密文 87.     * @return 明文 88.     * @throws Exception 89.     */  90.    public static byte[] des3DecodeCBC(byte[] key, byte[] keyiv, byte[] data)  91.            throws Exception {  92.        Key deskey = null;  93.        DESedeKeySpec spec = new DESedeKeySpec(key);  94.        SecretKeyFactory keyfactory = SecretKeyFactory.getInstance("desede");  95.        deskey = keyfactory.generateSecret(spec);  96.        Cipher cipher = Cipher.getInstance("desede" + "/CBC/PKCS5Padding");  97.        IvParameterSpec ips = new IvParameterSpec(keyiv);  98.        cipher.init(Cipher.DECRYPT_MODE, deskey, ips);  99.        byte[] bOut = cipher.doFinal(data);  100.        return bOut;  101.    }

下面是运行结果

ECB模式:
rmWB4+r9Ug93WI0KAEuMig==
中国ABCabc123

CBC模式:
4aabWF8UFour/vNfnzJrjw==
中国ABCabc123