'Called polyalphabetic substitution ciphers' presentation slideshows

CSCE 815 Network Security Lecture 3

CSCE 815 Network Security Lecture 3 . Data Encryption Standard (DES). Outline. Review classical cryptography Monoalphabetic Ciphers cryptanalysis using letter frequencies Playfair ciphers polyalphabetic ciphers transposition ciphers product ciphers and rotor machines

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Network Information Security ??????

Network Information Security ??????. No. 2: Classical Encryption Techniques. Instructor: Lu Bin ?? Tel: 7525260 Email: binlu714@yahoo.com.cn Office: Room B404, Teaching building 10#. 1 Symmetric Encryption.

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376 views • 26 slides