Massachusetts Institute of Technology: James Massey's "Cryptography - Science or Magic?"

Watch this lecture about cryptography. Professor Massey presents a number of topics, including No-break Cryptography, No-leak Secret Sharing, No-key Cryptography, and No-watch Coin Tossing,

Click http://techtv.mit.edu/videos/16442-cryptography-science-or-magic link to open resource.