CS283 Class 2 Recap - 20090915

CS283 Class 2 Recap - 20090915 - Class 2 (20090908) Recap,...

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CS 172/283 Autumn 2009 GWU Class 2 (20090908) Recap, Additional Concepts, Q&A, and Additional Reading
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GWU CS 172/283 - Autumn 2009 Holmblad - Lecture 02 - Rev 20090915 2 Class 2 (20090908) Recap Review of Key Concepts Additional concepts A look at a real vulnerability bulletin published by Cisco A look at a Microsoft Security Bulletin (monthly Patch Tuesday) Additional Reading Continue Lecture at Lecture 2 – Part 1 – Steam Ciphers Quiz #1 (last 45 minutes)
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GWU CS 172/283 - Autumn 2009 Holmblad - Lecture 02 - Rev 20090915 3 Class 2 (20090908) Recap Key Concepts Cryptography vs Cryptanalysis Code Based (word by word substitution) Cryptosystem vs Cipher Based (symbol by symbol substitution) Cryptosystem Steganography (hiding information in plain sight unless you know where to look) Statistical characteristics of natural language plaintext Classical Ciphers (Symbol Substitution and Symbol Transposition) Substitution>Monoalphabetic (single substitution alphabet)>Ceasar Substitution>Monoalphabetic (single substitution alphabet)> Affine
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CS283 Class 2 Recap - 20090915 - Class 2 (20090908) Recap,...

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