smaller faster but very specific crypto library
highly optimized (specificly for pbkdf2 on chrome) crypto library
I wrote this (because it was fun and) for a password generator. crypto-js (https://code.google.com/p/crypto-js/) is awesome but the pbkdf2 seems to get exponentially slower with more iterations. This library does fast pbkdf2, the algorithms are more-or-less straight off of wikipedia.
You can test the speed for yourself at: http://cryptoped.jit.su/
and the github page: https://npmjs.org/package/cryptoped