OK, didn’t post as many things as I’d have liked, partly because they required masses of cleanup and partly because I finally figured out an easy way to do something I’d been puzzling over for a while: encrypted webcam chat. (Your definition of “easy” may vary.)
What does it do?
It allows two people with webcams to conduct a secure video chat with each other, complete with audio. The connection is encrypted, authenticated with a shared secret so you know you’re connected to the right person, and in theory has perfect forward secrecy.
What’s the catch?