JAVA和C# 3DES加密解密

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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

感谢http://blog.csdn.net/sdfkfkd/article/details/6004847分享

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