Lecture 11: October 18, 2019

Reading: text, §8.4–8.5, 10.1–10.2
Due: Lab 1, due October 18, 2019; Homework 2, due October 21, 2019

1. Greetings and felicitations!
2. Puzzle of the Day
3. Role-based access control
4. Break-the-glass policies
5. Cryptography
   1. Codes vs. ciphers
   2. Attacks: ciphertext only, known plaintext, chosen plaintext
   3. Types: substitution, transposition
6. Symmetric Cryptography
   1. Monoalphabetic (simple substitution): f(a) = a + k mod n
   2. Example: Caesar (shift) cipher with k = 3, RENAISSANCE → UHQDLVVDQFH

Matt Bishop Office: 2209 Watershed Sciences Phone: +1 (530) 752-8060 Email: mabishop@ucdavis.edu

ECS 153, Computer Security Version of October 17, 2019 at 5:27PM

You can also obtain a PDF version of this.