Institute for Theoretical Information Technology

Cryptography I (V2/Ü1)

Dates:

Lecture Dates (Campus)
Exercise Dates (Campus)
Exam Dates (Campus)

Exam information

Die Klausurergebnisse Kryptographie I+II können online abgefragt werden.

Contents

Classical cryptosystems, Cryptanalysis of classical systems, entropy and perfect secrecy, fast block ciphers, number theoretic reference problems, cryptosystems based on discrete logarithms, public key cryptography

Thanks to a Chinese student, the Chinese Remainder Theorem was taught in its original language, well, not in full.

Prerequisites

Basic knowledge in stochastics and number theory.

Literature

• Lecture notes will be updated each week before the lecture, the current version will be available for download as pdf-file and in postscript format.
• The bibliography.
• The "Handbook of Applied Cryptography" by Menezes, van Oorschot and Vanstone (Download from the web pages of the University of Waterloo (Canada)).
• Lecture notes of the lecture "Stochastik für Informatiker" (in German)
• The Book "Informationstheorie" by R. Mathar.

Exercises:

Download of exercise sheets:

• Exercise1 (28.10.08): Download pdf
• Exercise2 (04.11.08): Download pdf
• Exercise3 (11.11.08): Download pdf, Ciphertext
• Exercise4 (18.11.08): Download pdf
• Exercise5 (25.11.08): Download pdf
• Exercise6 (09.12.08): Download pdf
• Exercise7 (16.12.08): Download pdf
• Exercise8 (06.01.09): Download pdf, solution E23 and E24
• Exercise9 (13.01.09): Download pdf
• Exercise10 (20.01.09): Download pdf
• Exercise11 (27.01.09): Download pdf
• Exercise12 (03.02.09): Download pdf

24.11.2008
Die Übung Cryptography I fällt am 02.12.2008 aus.

Exam:

An oral reexamination will take place on wednesday, april 15th, 2009 starting at 9 o'clock. A registration is required. Please mail to Michael Reyer for registration.

The written exam will take place on friday, march 13, 2009 from 9 am to 12 am in the seminarroom A, 4th floor, 407A, Walter-Schottky-Haus.
Information about Exam

Consultation hour:

Prof. Dr. R. Mathar Mi. 09:00 - 10:00
Dipl.-Ing. Wolfgang Meyer zu Bergsten Do. 14:00 - 15:00
Dr. Michael Reyer Mit. 09:00 - 10:00