Adding a third person to an encrypted conversation seems like it should be simple. It isn't. The cryptographic properties that make 1:1 messaging secure — forward secrecy, post-compromise security, deniability — become significantly harder to preserve as group size grows. When Signal introduced group chats, they faced a problem that doesn't exist in 1:1 messaging: how do you efficiently encrypt a
Introduction It’s a wonderful time to be a developer with rich tools, documentation, and artificial intelligence. Still, at least for now and the foreseeable future, developers must learn to write code, as artificial intelligence tools are not perfect and may produce code that is difficult to integrate into an existing code base. For developers just starting out, they need to learn the basics, t