Professor of Mathematics
Department of Mathematics
Northern
Highland Heights
859-572-6672
FAX: 859-572-6097
E-mail christensen@nku.edu
Here is a copy of the syllabus for CSC/MAT 483 – 001.
Here is a copy of the Departmental syllabus that applies to all MAT and STA courses.
Monday, January 11
Hints for solving cryptograms.
Wednesday, January 13 and Friday, January 15
Class did not meet.
Monday, January18
Holiday.
Wednesday, January 20
Friday, January 22
Monday, January 25
Wednesday, January 27
Friday, January 29
Monday, February 1
Wednesday, February 3
Friday, February 5
Monday, February 8 and Wednesday, February 10
Some old, long, and wordy notes about Hill cipher.
A less wordy Introduction to the Hill cipher.
Friday, February 12
The two Hill cipher known plaintext attacks that were done in class.
Monday, February 15
NKU closed because of weather.
Wednesday, February 17
Friday, February 19
Friedman's index of coincidence
Another way to find the length of the keyword
Change test one problem number 7 to:
7a. If a message is first encrypted with an
affine cipher with multiplicative key 7 and additive key 12 and then encrypted
again with an affine cipher having multiplicative key 15 and additive key 6,
what type of cipher is the composition?
What is the key?
7b. A ciphertext is known to have been encrypted with an affine
cipher. Using frequency analysis, it
seems that plaintext e is ciphertext
C
and plaintext t is ciphertext
H. If these assumptions are correct, what is the
key?
Monday,
February 22
Wednesday,
February 24
Gronsfeld
and Beaufort ciphers
Friday,
February 26
One time pads and stream
ciphers
Monday,
March 1
http://home.freeuk.com/spook007/
Wednesday, March 3
Friday, March 5
Transposition ciphers See columnar transposition pp. 5 – 11.
Spring Break
Handbooks of Cryptography
http://www.cacr.math.uwaterloo.ca/hac/ link to Handbook of Applied Cryptography by Menezes, van Oorschot, and Vanstone.
Applied Cryptography by Bruce Schneier.
Monday, March 15 and Wednesday, March 17
Simplified DES encryption example.
Simplified DES algorithm from Trappe and Washington.
DES algorithm from Schneier’s Applied Cryptography
Friday, March 19
Monday, March 22
Finding multiplicative inverses
Wednesday, March 24
Introduction to finite fields, I
Friday, March 26
Introduction to finite fields, II
Monday, March 29
Simplified IDEA algorithm by Nick Hoffman
Wednesday, March 31
Algebraic cryptanalysis of S-AES by Sean Simmons
Friday, April 2
The introduction to this paper introduces common symmetric key block ciphers
Monday, April 5
Wednesday, April 7
Block cipher modes http://en.wikipedia.org/wiki/Block_cipher_modes_of_operation
Friday, April 9
Classification of the SHA3 candidates
Monday, April 12
Wednesday, April 14
Friday, April 16 and Monday, April 19 and Friday, April 22
Introduction to public key cryptography
Wednesday, April 21
Presentation by Jintai Ding
Friday, April 23
Here is a copy of the comprehensive exam.
Monday, April 26
The article in Scientific American that introduced RSA.
Wednesday, April 28
Presentation by Nick Hoffman
Friday, April 30
The Case for Elliptic Curve Cryptography http://www.nsa.gov/business/programs/elliptic_curve.shtml
certicom ECC tutorial http://www.certicom.com/index.php/ecc-tutorial
