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

【原文：http://bbs.csdn.net/topics/350158619】