v Subject matter

Ø Mathematical -

§ Level is typical unstarred in math chapters

Ø Protocol -

§ What-if & why analysis of protocols - 

§ key exchange is full of these 

§ notation 

§ nonce idea & its uses 

§ Scenario question

Ø Private-key crypto -

§ All use multiround structure, either Feistel or reversible ops.

§ Key scheduling algorithm

§ What are differentiable & linear crypto

Ø The attacks -

§ known ciphertext

§ plaintext

§ chosen plaintext

§ password guessing

§ traffic analysis

§ Modes, CFB, etc.

§ Meet inthe middle - relate to double/triple DES

v Coverage

Ø See exam policies

Ø Through Thursday, February 13

v Preparation

Ø Textbook reading – chapters 1 through 10

Ø Problems – diagnosis is more important than detailed solving

§ See lists assigned in class

Ø Web pages – www.cryptography.org, http://www.counterpane.com/crypto-gram.html

v Exam methodology

Ø Open book and notes (avoids memorization)

Ø Mostly short-answer

§ What if

§ Why

§ Invent a way to do---

Ø Learn capabilities, not forgettable details