Lots of good stuff about how your PRG affects your entire crypto stack. Good links, too.

Fantastic visual explanation of Diffie-Hellman.

Crypto being used outside of Facebook to encrypt communications happening via Facebook. Cool, but misses the just-as-important privacy issue which is Facebook's ownership of the social graph.

Online backup service featuring well-thought crypto and a very cron-friendly interface.

We tackled JavaScript-accessible hash functions on the Flickr Uploadr. Natural progression, I suppose.

A novel proof of the still-not-shocking conclusion that if you have your encryption keys in memory, someone can get to them.