MDK. The 0.4 release is almost a month old, but i've made little progress on new features. The next step should be adding guile extensibility, but it's a lot of work... btw, thanks to the great work of Agustin Navarro, we already have Mandrake packages of mdk!
Books. Mostly reading crypto these days: Levy's Crypto is not that bad, Kahn's The Codebreakers is like reading a (very good) novel, Scheneier's Applied cryptography is a must read, and Koblitz's Algebraic aspects of cryptography nicely brings up the beauty of crypto math...
