mkeygenerator.java

httptunnel.jar httptunnel java 源码

package net.jumperz.app.httptunnel;

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

import net.jumperz.security.MCryptInfo;
import net.jumperz.util.*;

public final class MKeyGenerator
implements MCryptInfo
{
private static SecretKeySpec key;
private static File keyFile;
private static String keyFileName;
//----------------------------------------------------------------------------------------
public static void main( String[] args )
throws Exception
{
if( args.length == 1 )
	{
	keyFileName = args[ 0 ];
	generateKey();
	}
else
	{
	System.out.println( "Usage: java net.jumperz.app.httptunnel.MKeyGenerator KEY_FILE_NAME" );
	return;
	}
}
//----------------------------------------------------------------------------------------------
public static final void generateKey()
throws Exception
{
keyFile = new File( keyFileName );
if( keyFile.exists() )
	{
	System.out.println( "File already exists. Overwrite? ( Y/N )" );
	BufferedReader reader = new BufferedReader( new InputStreamReader( System.in, MCharset.CS_ISO_8859_1 ) );
	String line = reader.readLine();
	if( line.equalsIgnoreCase( "Y" )
	 || line.equalsIgnoreCase( "YES" )
	  )
		{
			//proceed
		}
	else
		{
		return;
		}
	}

	//generate key
System.out.println( "Generating a new key..." );
SecureRandom secureRandom = new SecureRandom();
byte[] rawKey = new byte[ KEYSIZE ];
secureRandom.nextBytes( rawKey );
key = new SecretKeySpec( rawKey, ALG );

	//Save to file
FileOutputStream ofstream = new FileOutputStream( keyFile );
ObjectOutputStream oostream = new ObjectOutputStream( ofstream );
oostream.writeObject( key );
oostream.close();

System.out.println( "New key is saved as : " + keyFile.getAbsolutePath() + "." );
}
//----------------------------------------------------------------------------------------
}