PDMI TUM State University St. Petersburg
Steklov Institute St. Petersburg Technische Universität München State University St. Petersburg

Joint Advanced Student School (JASS)

Course 1: Algorithms in IT Security

St. Petersburg - Wednesday, March 30 through Saturday, April 9, 2005

Ilya Saverchenko

Classical Cryptography


Cryptography is a study of secret writing. It allows two people, usually referred to as Alice and Bob, to communicate over an insecure channel in such a way that an opponent, Eve, cannot understand what is being said. For many centuries people have used different cryptographic algorithms.
We survey classical cryptosystems and approaches to break them.

Saverchenko Ilya Classical Cryptography[PPT]
Saverchenko Ilya Classical Cryptography[PDF]