DES Program Update/Help
Hi,
I'm trying to accomplish the following:
-Generate a DES key
-Store it in a file
-Use the DES key to encrypt my message and send it over socket s to a server
I've made a lot of progress, but I'm not sure what's missing, as this is all basically new to me. If anyone can examine it and provide some help, I'd really appreciate it.
Thanks,
James
import java.io.*;
import java.net.*;
import java.security.*;
import javax.crypto.*;
publicclass CipherClient
{
publicstaticvoid main(String[] args)throws Exception
{
String message ="Hello, how are you John?";
String host ="xxxxx";//bleeped out for privacy reasons
int port = xxxx;//bleeped out for privacy reasons
Socket s =new Socket(host, port);
//DES Key Generation
KeyGenerator generator= KeyGenerator.getInstance("DES");
generator.init(new SecureRandom());
key=generator.generateKey();
//Storage of DES Key to File
ObjectOutputStream out=new ObjectOutputStream(new FileOutputStream("des.key"));
out.writeObject(key);
out.close();
//usage of ObjectOutputStream to communicate with the server
ObjectOutputStream outSocket =new ObjectOutputStream(s.getOutputStream());
//Encrypt the message above using the key and send it over socket s to the server
Cipher cipher=Cipher.getInstance("DES/ECB/PKCS5Padding");
cipher.init(Cipher.ENCRYPT_MODE, key);
//Passing the encrypted message over socket s to the server
CipherOutputStream cipherOut =new CipherOutputStream(sSocket, cipher);
}
}
