kerberos的java实现

用java语言实现的简单的kerberos，可以对客户端进行AS，tgs的认证

import java.security.*;
import javax.crypto.*;

public class AESKey{
	private final static int BIT = 128;
	private KeyGenerator keyGen;
	private Key key;
	
	public AESKey（） {
		try {
			keyGen = KeyGenerator.getInstance（“AES“）;
			generateKey（）;
		} catch （NoSuchAlgorithmException e） {
			e.printStackTrace（）;
		}
	}
	public byte[] AESencrypt（byte[] plainTextKey k）throws Exception
	{	
		Cipher cipher=Cipher.getInstance（“AES“）;
		cipher.init（Cipher.ENCRYPT_MODEk）;
		byte[] cipherText=cipher.doFinal（plainText）;	
		return cipherText;	
	}
	
	
	public String AESdecrypt（byte[] tKey k）throws Exception
	{
		Cipher cipher=Cipher.getInstance（“AES“）;	
		cipher.init（Cipher.DECRYPT_MODEk）;
		byte[] newPlainText = cipher.doFinal（t）;	
		return new String（newPlainText“UTF8“）;		
	}
	private void generateKey（） {
		keyGen.init（BIT）;
		key = keyGen.generateKey（）;
	}
	
	public Key getKey（）{
		return key;
	}
}

 属性            大小     日期    时间   名称
----------- ---------  ---------- -----  ----

     文件        232  2008-06-02 12:46  SecurityProject\.classpath

     文件        391  2008-05-28 23:57  SecurityProject\.project

     文件          0  2008-06-04 22:55  SecurityProject\bin\AESKey

     文件       1675  2008-06-04 23:10  SecurityProject\bin\AESKey.class

     文件       3622  2008-06-04 21:38  SecurityProject\bin\ASserver.class

     文件        503  2008-06-04 18:47  SecurityProject\bin\AS_C.class

     文件        674  2008-06-04 18:47  SecurityProject\bin\Authenticator_s.class

     文件        680  2008-06-04 18:47  SecurityProject\bin\Authenticator_tgs.class

     文件        922  2008-06-05 21:44  SecurityProject\bin\Client$1.class

     文件       1352  2008-06-05 21:44  SecurityProject\bin\Client$2.class

     文件      14226  2008-06-05 21:44  SecurityProject\bin\Client.class

     文件        498  2008-06-04 18:47  SecurityProject\bin\C_AS.class

     文件        610  2008-06-04 18:47  SecurityProject\bin\C_S.class

     文件        771  2008-06-04 18:47  SecurityProject\bin\C_TGS.class

     文件       1499  2008-06-04 18:47  SecurityProject\bin\DEScode.class

     文件       1620  2008-06-04 18:48  SecurityProject\bin\FileStream.class

     文件       1418  2008-06-04 20:29  SecurityProject\bin\RSACryptography.class

     文件       5831  2008-06-04 23:21  SecurityProject\bin\SServer.class

     文件        374  2008-06-04 18:47  SecurityProject\bin\S_C.class

     文件       5950  2008-06-04 22:45  SecurityProject\bin\TGSserver.class

     文件        493  2008-06-04 18:47  SecurityProject\bin\TGS_C.class

     文件        981  2008-06-04 22:03  SecurityProject\bin\Ticket_s.class

     文件       1195  2008-06-04 20:57  SecurityProject\bin\Ticket_tgs.class

     文件       4519  2008-06-04 21:29  SecurityProject\bin\Utils.class

     文件        419  2008-06-04 21:29  SecurityProject\keys\pbclient.txt

     文件        419  2008-06-04 21:29  SecurityProject\keys\pbserver.txt

     文件        419  2008-06-04 21:29  SecurityProject\keys\pbtgs.txt

     文件        894  2008-06-04 21:29  SecurityProject\keys\prclient.txt

     文件        893  2008-06-04 21:29  SecurityProject\keys\prserver.txt

     文件        894  2008-06-04 21:29  SecurityProject\keys\prtgs.txt

............此处省略26个文件信息