Personal Chat 3.0

Redesign of the personal class, Chat 2.1.  Chat 3.0 adds:
- GUI interface using Fox
- Peer-granular authentication, allowing untrusted servers
- Individual rooms
- 2,400-bit RSA by default
- Multiple concurrent logins


Files:
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clent3.rb - Client-side network management

chat3.rbw - Main GUI application

chat_serv3.rb - Chat 3.0 server

chat_window.rb - Main GUI window/container

cmd_chat.rb - Command line interface to Chat 3.0

comm3.rb - Network protocol implementation and abstraction layer for the
           underlying cryptosystem

controls3.rb - Server-side plugins

room_pane.rb - View and controller for the basic chatroom widget

guser3.rb - Extensions to user3.rb specific to the GUI implementation

keygen3 - Command line tool for generating an RSA keypair an account name

rsa.rb - Pure ruby implementation of the popular RSA encryption protocol

serv_ssl - Server-side abstraction to Ruby's OpenSSL bindings

symmetric3.rb - Class controlling all symmetric encryption and key management