Organization

News:

The 2nd exercise is published. Exercise class will be on 28.11.2019.

Lecture:

Tuesdays, 10:00-11:30, in room 13-222

Exercises:

Thursday, 15:30 - 17:00, in room 36-438

Contact:

Prof. Dr.-Ing. Jens Schmitt
M.Sc. Eric Jedermann
or follow us on Twitter

Course Overview

This course gives an introduction to secure communication in computer networks. Topics covered in this lecture include:

  • history of secure communication
  • symmetric cryptography: DES, 3DES, AES
  • asymmetric cryptography: RSA, Diffie-Hellman, El Gamal
  • hash functions: SHA1, MD5
  • cryptographic protocols: Secret Sharing, Needham-Schroeder, Kerberos, X.509
  • other security relevant topics: random number generation, birthday problem

Slides

The slides are accessible only from within the university network (131.246.*). Please use SSH or VPN for remote access.

Chapter Title Slides Last Updated
0 Organization PDF 29.8.2019
1 Introduction PDF 29.8.2019
2 Symmetric Crypto PDFa, PDFb, PDFc 19.11.2019
3 Asymmetric Crypto PDF 26.11.2019

Material/Literature

  • The nice and comprehensive Handbook of Applied Cryptography by Menezes, van Oorschot and Vanstone is available online for free and can be found here.
  • An extra course about cryptography can be found here.
  • A illustrative video about the discrete logarithm problem.
  • ECC Visualization (java)
  • An example of differential Cryptanalysis can be found here.

Exercises

The exercise sheets are accessible only from within the university network (131.246.*). Please use SSH or VPN for remote access.

Published Covered Topics Exercise date Download
Solution
Last Updated
 4.11.2019  Basics, Feistel Network, Monoalphabetic Cipher 14.11.2019  exercise1 solution1 14.11.2019
19.11.2019 DES, differential cryptanalysis, modes of operation 28.11.2019 exercise2 solution2 19.11.2019

 

 

 

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