package?com.cyc.www.cry;

import?java.io.DataInputStream;
import?java.io.DataOutputStream;
import?java.io.FileInputStream;
import?java.io.FileNotFoundException;
import?java.io.FileOutputStream;
import?java.io.IOException;
import?java.io.RandomAccessFile;

/**
?*?@since?2014/9/4
?*?@author?Hust
?*?密鑰為64位，明文，密文均處理成64位分組，輸入時數字用16進制表示
?*?加密文件時不考慮文件的編碼方式，只需要處理底層的字節流就可以了
?*/

public?class?DesTest?{
	public?DesTest（）?{
		
	}
	
	public?static?void?main（String[]?args）?throws?IOException?{
		??//long?plain?=?0x0123456789ABCDEFL?key?=?0xFEDCBA9876543210L;
		??//long?plain?=?0Lkey?=?0L;
		//long?plain?=?0xFFFFFFFFFFFFFFFFLkey?=?0xFFFFFFFFFFFFFFFFL;
		long?plain??=0x51454B582DDF440AL?key?=?0x3849674C2602319EL;
		?//?long?plain?=?0x6c6561726e696e67Lkey?=?0x636f6d7075746572L;
		//long?plain?=?0x434f4d5055544552L?key?=?0x5345435552495459L;
		??DesTest?desTest?=?new?DesTest（）;
		??desTest.getKey56（key）;
		??desTest.showEnAndDeDemo（key?plain）;
	}
	public?void?showEnAndDeDemo（long?keylong?plain）?throws?IOException?{
		System.out.printf（“明文是：%x\n“plain）;
		long?plainlong?=?Encry（plain?key）;
		System.out.printf（“加密最終的結果是：%x\n“?plainlong）;
		long?result?=?deCry（plainlong）;
		System.out.printf（“解密的結果：%x\n“result）;
		EncryFile（“D:\\測試文件.txt“?“D:\\1.txt“）;
		DecryFile（“D:\\1.txt“?“D:\\2.txt“）;
	}
	
	public?long?Encry（long?plainlong?key）?{
		long[]?[]?plaingroup?=?new?long[17][2];
		plaingroup[0]?=?IPSub（plain?IPTable）;
		for?（int?i?=?0;?i?			plaingroup[i+1]?=encryOne（plaingroup[i]?keyArrage（i））;
		}
		long?plainlong?=?（plaingroup[16][1]<<32）?+?plaingroup[16][0];
		long[]?plainlongtemp?=?new?long[2];
		plainlongtemp=?IPSub（plainlong?UnIPTable）;
		plainlong?=?（plainlongtemp[0]?<		return?plainlong;
	}
	
	public?long?deCry（long?cihper）?{
		long?[][]?decry?=?new?long[17][2];
		decry[0]?=?IPSub（cihper?IPTable）;
		for?（int?i?=?0;?i?			decry[i+1]?=?encryOne（decry[i]keyArrage（15?-?i））;
		}
		long?crylongF?=?（decry[16][1]<<32）?+?decry[16][0];
		long[]??crylongtemp?=?new?long[2];
		crylongtemp=?IPSub（crylongF?UnIPTable）;
		crylongF?=?（crylongtemp[0]<<32）?+?crylongtemp[1];
		return?crylongF;
	}
	/*
	?*?加密文件
	?*/
	public?void?EncryFile（String?plainFileString?cipherFile）?throws?IOException?{
		long?last?=?0x0808080808080808L;
?		byte[]?lastbit?=?new?byte[8];
		long?plainTemp?=?0x0L;
?		long?cipherTemp?=?0x0L;
?		long?key?=?0x3849674C2602319EL;
		try?{
			FileInputStream?fin?=?new?FileInputStream（plainFile）;
			FileOutputStream?fout?=?new?FileOutputStream（cipherFiletrue）;
			DataInputStream??din?=?new?DataInputStream（fin）;
			DataOutputStream?dOut?=?new?DataOutputStream（fout）;
			RandomAccessFile?in?=?new?RandomAccessFile（plainFile?“r“）;
			long?length?=?in.length（）;
			long?groups?=?length/8;
			long?yuuu?=?length%8;
			for?（int?i?=?0;?i?				plainTemp?=?din.readLong（）;
				cipherTemp?=?Encry（plainTemp?key）

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----
?????文件?????????301??2014-07-13?09:43??CryTest\.classpath
?????文件?????????383??2014-07-21?10:48??CryTest\.project
?????目錄???????????0??2014-09-06?21:51??CryTest\.settings\
?????文件?????????598??2014-07-13?09:43??CryTest\.settings\org.eclipse.jdt.core.prefs
?????目錄???????????0??2014-09-07?10:48??CryTest\bin\
?????目錄???????????0??2014-09-07?10:48??CryTest\bin\com\
?????目錄???????????0??2014-09-07?10:48??CryTest\bin\com\cyc\
?????目錄???????????0??2014-09-07?10:48??CryTest\bin\com\cyc\www\
?????目錄???????????0??2014-09-12?23:39??CryTest\bin\com\cyc\www\cry\
?????文件???????12083??2014-09-12?19:40??CryTest\bin\com\cyc\www\cry\DesTest.class
?????文件????????2699??2014-09-12?20:54??CryTest\bin\com\cyc\www\cry\MgmlDemo.class
?????文件????????3668??2014-09-12?09:46??CryTest\bin\com\cyc\www\cry\RSA.class
?????文件????????6473??2014-09-12?23:36??CryTest\bin\com\cyc\www\cry\SPN.class
?????文件????????6034??2014-09-11?15:33??CryTest\bin\com\cyc\www\cry\SPN_ATTACK_DIFF.class
?????文件????????6278??2014-09-11?15:24??CryTest\bin\com\cyc\www\cry\SPN_ATTACK_LINEAR.class
?????文件????????5630??2014-09-07?10:48??CryTest\bin\com\cyc\www\cry\SPNF.class
?????目錄???????????0??2014-09-02?19:36??CryTest\src\
?????目錄???????????0??2014-09-02?19:36??CryTest\src\com\
?????目錄???????????0??2014-09-02?19:36??CryTest\src\com\cyc\
?????目錄???????????0??2014-09-02?19:36??CryTest\src\com\cyc\www\
?????目錄???????????0??2014-09-12?23:39??CryTest\src\com\cyc\www\cry\
?????文件???????13433??2014-09-12?19:40??CryTest\src\com\cyc\www\cry\DesTest.java
?????文件????????1882??2014-09-12?20:54??CryTest\src\com\cyc\www\cry\MgmlDemo.java
?????文件????????3167??2014-09-12?09:46??CryTest\src\com\cyc\www\cry\RSA.java
?????文件????????5190??2014-09-12?23:36??CryTest\src\com\cyc\www\cry\SPN.java
?????文件????????6265??2014-09-11?15:33??CryTest\src\com\cyc\www\cry\SPN_ATTACK_DIFF.java
?????文件????????6898??2014-09-11?15:24??CryTest\src\com\cyc\www\cry\SPN_ATTACK_LINEAR.java
?????文件????????5538??2014-09-07?10:45??CryTest\src\com\cyc\www\cry\SPNF.java
?????文件????????2407??2014-09-02?10:45??CryTest\測試數據.txt