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, , 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, , 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, , 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, , 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[] { , , , , , , ,  };      //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

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

文章来自：http://blog.csdn.net/sdfkfkd/article/details/6004847  感谢作者的分享。