'Hill ciphers' presentation slideshows

Announcements: Pass in Assignment 1 now Meet my assistant Kevin Reed

DTTF/NB479: Dszquphsbqiz Day 6. Announcements: Pass in Assignment 1 now Meet my assistant Kevin Reed Assignment 2 (tentative) posted Questions? Today: Finish Vigenere, start Hill ciphers. Vigenere Ciphers. Idea: the key is a vector of shifts Ex. Use a word like hidden (7 8 3 3 4 13) .

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Announcements: Pass in Assignment 1 now Meet my assistant Kevin Reed

DTTF/NB479: Dszquphsbqiz Day 6. Announcements: Pass in Assignment 1 now Meet my assistant Kevin Reed Assignment 2 (tentative) posted Questions? Today: Finish Vigenere, start Hill ciphers. Vigenere Ciphers. Idea: the key is a vector of shifts Ex. Use a word like hidden (7 8 3 3 4 13) .

127 views • 12 slides

Announcements: Matlab tutorial linked to in syllabus Questions? Today:

DTTF/NB479: Dszquphsbqiz Day 7. Announcements: Matlab tutorial linked to in syllabus Questions? Today: Block ciphers , especially Hill Ciphers Modular matrix inverses. 1. Block Ciphers. So far, changing 1 character in the plaintext changes ___ character(s) in the ciphertext .

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Lecture 3 Classical Cipher System SUBSTITUTION CIPHERS

Lecture 3 Classical Cipher System SUBSTITUTION CIPHERS. By: NOOR DHIA AL- SHAKARCHY 2012-2013. Classical cipher system. substitution. transposition. simple. Homophonic. polyalphabetic. polygram. High-order. Beal. Vigenere. Beafort. Variant beaufort. Key word mix. affin. shifted.

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Announcements:

174 views • 6 slides