It's been a while since I did some active ZF/PEAR component development. It's been one of those 6 month periods where time to commit was a rarity for a few reasons. So now that I'm back on the road, where to?
He sets his sights on the Zend_Crypt component and details some of the encryption methods it contains - HMAC, the Diffie-Hellman Key Agreement Protocol, a hashing wrapper and proposed support for a RSA public key cryptography. He mentions that a lot of this support is already in a beta package for PEAR.