Institute for Theoretical Information Technology

Cryptography (V2/Ü1)

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Links to Campus Office

Lecture
Exercise
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 2
• Lecture 3
• Lecture 4
• Lecture 5
• Lecture 6
• Lecture 7
• Lecture 8
• Lecture 9
• Lecture 10
• Lecture 11
• Lecture 12
• Lecture 13
• Lecture 14

Exercises

• Exercise 1 – Solution
• Exercise 2 – Solution
• Exercise 3 – Solution
• Exercise 4 – Solution
• Exercise 5 – Solution
• Exercise 6 – Solution
• Exercise 7 – Solution
• Exercise 8 – Solution
• Exercise 9 – Solution
• Exercise 10 – Solution
• Exercise 11 – Solution
• Exercise 12 – Solution
• Exercise 13 – Solution
• Review Exam – Solution

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) (24.08.17, 10:00AM, ICT-Cubes, room 333).
• The exam on Cryptography 1 begins on Tuesday, August 29, 2017, 01:30 p.m. in the rooms 1385|003 (H03) and 1090|321 (Eph) and lasts 90 minutes.
• Students with matr. number from 222XXX to 333XXX should go to Claßenstr. 11, 52072 Aachen, C.A.R.L. 1385|003 (H03) for the examination.
• Students with matr. number from 334XXX to 376XXX should go to Schinkelstraße 2, 52062 Aachen , Rogowski-Institut u.a. 1090|321 (Eph) for the examination.
• 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.
• The results of the exam are now online. The access codes are found on the information sheets distributed during the exam.
• Exam inspection (Klausur-Einsicht) (Friday, 08.09.17, 10:00h, ICT-Cubes, room 333)

Discussion hour

Friday, 11am, ICT cubes, Kopernikusstr.16, 3rd. floor, Room 333, Vimal Radhakrishnan, first time on 28th of April 2017

Consultation hour

Prof. Dr. R. Mathar upon agreement
Dr. Arash Behboodi upon agreement
M.Sc. Qinwei He upon agreement