Institute for Theoretical Information Technology

Cryptography (V2/Ü1)

The information on this website is also available in the RWTHmoodle.

Contact

Contact us

Please reach out to us via crypto@ti.rwth-aachen.de, regarding this lecture, the exercises, the exam or anything else concerning this course.

Links to RWTH Online

Lecture in ICT cubes, room 002
Exercise in ICT cubes, room 002
Exam

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

Prerequisites

Basic knowledge in stochastics and number theory.

Literature

• Our lecture notes for Cryptography & Advanced Methods of Cryptography.
• Handbook of Applied Cryptography by Menezes, van Oorschot and Vanstone.
• Lecture notes of the lecture Stochastik für Informatiker by R. Mathar.
• The book Informationstheorie by R. Mathar.
• Complete list of the bibliography.
• Video recordings of the lecture in SS2015/16 by Video AG.

Lecture Notes

• Lecture notes 01
• Lecture notes 02
• Lecture notes 03
• Lecture notes 04
• Lecture notes 05
• Lecture notes 06
• Lecture notes 07
• Lecture notes 08
• Lecture notes 09
• Lecture notes 10
• Lecture notes 11
• Lecture notes 12
• Lecture notes 13

Tutorial Notes

• Tutorial notes 00
• Tutorial notes 01
• Tutorial notes 02
• Tutorial notes 03
• Tutorial notes 04
• Tutorial notes 05
• Tutorial notes 06
• Tutorial notes 07
• Tutorial notes 08
• Tutorial notes 09
• Tutorial notes 10
• Tutorial notes 11
• Tutorial notes 12
• Tutorial notes 13 - Review Exercise

Exercises

• Tutorial 01 – Solution 01
• Tutorial 02 – Solution 02
• Tutorial 03 – Solution 03 – Ciphertext
• Tutorial 04 – Solution 04
• Tutorial 05 – Solution 05
• Tutorial 06 – Solution 06
• Tutorial 07 – Solution 07
• Tutorial 08 – Solution 08
• Tutorial 09 – Solution 09
• Tutorial 10 – Solution 10
• Tutorial 11 – Solution 11
• Tutorial 12 – Solution 12
• Review Exercise – Solution 13

Help-sheet

• Help-sheet for Cryptography (english version only)

Pocket Calculator

While taking the written exam, you are allowed to use a pocket calculator from this list.

Information about the Exam

• Review exercise (Zusatzübung) on Friday 26.07.19, 10:30 am, ICT cubes, seminar room 002.
• Extra consultation hour (Sprechstunde) on Friday 02.08.19, 10:30 am, ICT cubes, seminar room 002.
• The exam on Cryptography begins on Monday 19.08.19, 02:30 pm in room 1420|210 (Großer Hörsaal, Audimax) and lasts 90 minutes.
• During the exam you are allowed to use a pocket-calculator that is enlisted in the list above. We will distribute the official help sheet (English version) at the beginning of the exam.

Discussion hours

Friday, 11 am, ICT cubes, Kopernikusstr.16, 3rd. floor, Room 333, Vimal Radhakrishnan, first time on 12th of April 2019

Consultation hour

Prof. Dr. R. Mathar upon agreement
Dr. Michael Reyer upon agreement