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Hill Ciphers. Lester Hill, 1929. Not used much, but first time linear algebra used in cryptoUse an n x n matrix M. Encrypt by breaking plaintext into blocks of length n (padding with x's if needed) and multiplying each by M.Example: Encrypt hereissomeonetoencrypt" using M her eis som eon
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1. Announcements: Matlab: tutorial available at http://www.math.ufl.edu/help/matlab-tutorial/ Questions? Today: Wrap up Hill ciphers One-time pads and LFSR Schedule change: skip Playfair cipher, start ch 3 tomorrow