CS333 (901)

Marcus Schaefer

Latest additions


Homeworks and Examples

Assignments will be available through this webpage. Written homeworks are due at the beginning of class. If you hand in the homework late 20% will be taken off the score for each day.




Questions and Answers


Classes and office hours

The class meets Th 5:45-9:00 (CTI 224). This course is COL.

My office hours are TTh 4:00-5:30. 

During that time you can find me in the CS&T building, room 749.
If you want to set up an appointment at another time, or simply ask a question, 
send email to


As textbook we will use Barr's Invitation to Cryptology, Prentice Hall, ISBN: 013088976-8; 2002.


For general information (literature, course summary), see the class syllabus.
The following is a very rough schedule, and we might depart from it.

Week 1-3

Classical Ciphers, Statistics, Mathematical Foundations

Week 4- 6

Symmetric Ciphers (shiftregister ciphers, Feistel networks, simplified DES

Week 7-10

Public Key Cryptography and Protocols (RSA, Key Agreement, Digital Signatures), and advanced topics.

Grades and exams

Homework, quizzes: 40%, Midterm: 30%, Final: 30%.

The midterm and final will take place during class.

General Policies

Academic Honesty


An incomplete grade is given only for an exceptional reason such as a death in the family, a serious illness, etc. Any such reason must be documented. Any incomplete request must be made at least two weeks before the final, and approved by the Dean of the School of Computer Science, Telecommunications and Information Systems. Any consequences resulting from a poor grade for the course will not be considered as valid reasons for such a request.

Marcus Schaefer
Last updated: February 13th, 2003.