Schedule and Assignments

Math 204

Class Date	Topic	HW (this is the homework assigned on this day, not the homework due)
M Jan 7	Monoalphabetic Ciphers	email and paper, described here Due date for paper is changed to M Jan 14.
T Jan 8	No Class -- I am at a conference
Th Jan 10	Modular arithmetic, polyalphabetic ciphers	Handout, due F.
F Jan 11	vigenere's polyalphabetic cipher	Handout, due M, read ch 2 of Singh. also paper is due if you haven't already turned it in.
M Jan 14	probability and methods of attack on polyalphabetic ciphers (Kasiski test)	Handout, due T
T Jan 15	more on Friedman's Test, using Excel to break ciphers	Handout, due TH, also Quiz on TH
Th Jan 17	perfect security, Check Digits, QUIZ	handout
F Jan 18	more on check digits	handout
M Jan 21	Public Key Cryptography -- intro to RSA, and the Euler phi function	handout
T Jan 22	More on RSA, QUIZ	tba
Th Jan 24	Public Key Cryptography	tba
F Jan 25	Public Key Cryptography	tba
M Jan 28	Block Ciphers, Hill and DES,QUIZ	tba
T Jan 29	Block Ciphers, Hill and DES	tba
Th Jan 31	Current issues involving cryptography, QUIZ	tba
F Feb 1	Summary and Review	tba
S Feb 2	Final Exam