Computer Science CS 4/57221 Introduction to Cryptology
Call Numbers 21158 and 21159
HOMEWORK
Fall, 2009

All homework is due by EMAIL at 11 PM on the date indicated.
NO HARD COPY WILL BE ACCEPTED

Due September 16: From pages 22 and 23: Problems 2.5.5, 2.5.6 and use it to do 2.5.2


Due September 23: Write program(s) that will accept two characters 'A' and 'B' and encode/decode their input according to the corresponding affine cypher..


Due October 7:
From pages 131-133:
5.1.7.8, 5.1.7.9, 5.1.7.10, 5.1.7.11, 5.1.7.13


Due Oct 21:
From pages 186-188:
5.2.6.1, 5.2.6.6, 5.2.6.7, 5.2.6.8, 5.2.6.10


Due Nov. 04:
From pages 216-219:
6.9.1, 6.9.2, 6.9.3, 6.9.4, 6.9.5, 6.9.7, 6.9.10