Chapter 10. SafeTalk

SafeTalk is a Java application based on the talk utility of Unix. talk allows two users on different computers to type messages to each other, in real time, over a network. It’s not hard to eavesdrop on talk because its data is sent in plaintext over the network. SafeTalk adds cryptography to this application, providing authentication for each end of the conversation and encryption for the conversation itself.

SafeTalk builds on work that we’ve done elsewhere in this book: