bitjoe - JavaCryptServer - EncryptHex - SOURCE CODE

import java.net.*;
import java.io.*;

public class EncryptServer {
    public static void main(String[] args) throws IOException {
        ServerSocket serverSocket = null;
        Socket socket = null;
        boolean listening = true;

        try {
            serverSocket = new ServerSocket(2222);
        } catch (IOException e) {
            System.err.println("Could not listen on port: 2222");
            System.exit(-1);
        }

        while (listening){
          socket = serverSocket.accept();
          //System.out.println(socket.getInetAddress());
          //System.out.println(serverSocket.getInetAddress());
          if(socket.getInetAddress().toString().endsWith("127.0.0.1")){
	        new EncryptServerThread(socket).start();
	      }else{
	      	socket.close();
	      }	
	    }

        serverSocket.close();
    }
}

import java.net.*;
import java.io.*;

import org.bouncycastle.util.encoders.Hex;
import org.bouncycastle.crypto.BufferedBlockCipher;
import org.bouncycastle.crypto.paddings.PaddedBufferedBlockCipher;
import org.bouncycastle.crypto.modes.CBCBlockCipher;
import org.bouncycastle.crypto.engines.AESEngine;
import org.bouncycastle.crypto.params.KeyParameter;
import org.bouncycastle.crypto.CryptoException;

public class EncryptServerThread extends Thread {
    private Socket socket = null;
    private byte[] cipherText  = null;

    public EncryptServerThread(Socket socket) {
	super("DecryptServerThread");
	this.socket = socket;
    }

    public void run() {

	try {
	    PrintWriter out = new PrintWriter(socket.getOutputStream(), true);
	    BufferedReader in = new BufferedReader(new InputStreamReader(socket.getInputStream()));

	    String inputLine, outputLine;
	    
	    inputLine = in.readLine();
	    
	    String[] cryptText= inputLine.split(":");
	    
	    
	    outputLine = performEncrypt(Hex.decode(cryptText[0].getBytes()), cryptText[1]);
	    
	    out.println(outputLine);

	    out.close();
	    in.close();
	    socket.close();

	} catch (IOException e) {
	    e.printStackTrace();
	}
    }
 private final String performEncrypt(byte[] key, String plainText){

        byte[] ptBytes = plainText.getBytes();
        /*for(int i = 0; i < key.length; i++){
			System.out.print(key[i]);

... [truncated, 31 more lines] ...