streamin.java

很好的解密算法

import java.io.*;
import java.security.*;
import javax.crypto.*;
public class StreamIn{
   public static void main(String args[]) throws Exception{

	FileInputStream f=new FileInputStream("key1.dat");
	ObjectInputStream ob=new ObjectInputStream(f);
	Key k=(Key)ob.readObject( );
	Cipher cp=Cipher.getInstance("DESede");
        cp.init(Cipher.DECRYPT_MODE, k);
//        cp.init(Cipher.ENCRYPT_MODE, k);
      	FileInputStream in=new FileInputStream(args[0]);
        CipherInputStream cin=new CipherInputStream(in, cp);
        
        int b=0;
        while( (b=cin.read()) !=-1 ){
              System.out.print((byte)b+",");
//              System.out.print((char)b);
        }


   }
}