'Dttf nb479' presentation slideshows

Announcements: Choosing presentation dates (at end) Questions? This week: Hash functions, SHA Birthday attacks Digital s

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Announcements: Term project groups and topics due midnight HW6 due next Tuesday. Questions?

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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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