Jonatan Jonsson
GTID: 902691192

CS4237 - Computer & Network Security

Final Project - A secure chat client that uses 
	- DiffieHellman to establish a shared secret between two parties that don't know anything about eachother
	- AES to encrypt the messages
	- SHA-1 to check the integrity of the messages
	- SDL threads for better chat functionality
	
Written and compiled for Windows 7 x64 edition by Visual Studio 2008 C++ express.
	(Note: if you just want to run the program simply run "Secure chat.exe")

Thanks to:
	René Nyffenegger -	The socket class (Uses winsocks so the chat client is OS-dependant)
	Paul E. Jones	 -	SHA-1 class
	Raul N.Shakirov  -	For the CBigNum library

Copyright (C) 2009 Jonatan Jonsson

User Guide:

1. First choose if you would like to be a server(Trinity) or a client(Neo) by entering a 1 or 2 respectivly
2. If you chose server:
		1. Connect from another computer or terminal to this server by starting this software on that computer
		but instead of choosing server chose client instead.

   If you chose client:
		1. Enter the IP-adress of a server running this software in server mode and that awaits a connection, then press enter.
			(Note: To see the IP-adress of the server run cmd, type ipconfig and look up your adress there)
		2. Choose if you want a new prime to be generated or a pre generated one. 
			(Note: the prime is sent in the clear so it should be fine to use the default prime)
			
3. Chat away, press enter to send messages.
4. type quit or click on the x of the console window to exit.
	(Note: the other party will know that you quit)
5. Feel confident that your messages have been sent in a secure manner.