Differential Cryptanalysis: an Introduction for Humans

Keith Makan talks about differential cryptanalysis which is one of the most fundamental attacks ever developed in the history of security. The talk covers a gentle introduction to the idea; shows you how to perform the attack, as well includes some rants about how terrible crypto is in general. For the people who are less interested in crypto, it also includes a discussion about the possible cause of possible future intergalactic war. :-D