Department of Computational Perception

Cryptography

344.016, 2 KV (3 ECTS), SS 2017

A. Univ.Prof. Dr. Josef Scharinger

General information

In this course, students will learn about the cryptographic concepts, algorithms and protocols currently most relevant to ensure confidentiality, integrity, authenticity and nonrepudiation in secure communication. 

Schedule and content

• 14.03.: Plan semester schedule, establish project teams
• 21.03.: Introduction to cryptography: history, basic terms and methods, perfect secrecy, practical  security
• 28.03.: DES - Data Encryption Standard: history, description, security, variants, modes for block ciphers, successor
  
• 04.04.: From DES to AES: IDEA (James Massey et.al.), SKIPJACK (originator: NSA), AES (Advanced Encryption Standard as official successor to the DES)
• 25.04.: Symmetric stream ciphers: operational principle, generation of pseudo-random numbers, linear shift registers, A5 (GSM), RC4 (R. Rivest), ChaCha20 (D.J. Bernstein)
• 02.05.: Asymmetric cryptosystems: motivation and operational principle, knapsack algorithms, Diffie-Hellman key agreement, public key cryptography according to ElGamal, RSA (key pair generation, encryption, decryption, security, performance) 
• 09.05.: Digital signatures, cryptographic hash functions: motivation and problem statement, operational principle, certification authorities (CAs),  cryptographic hash functions (SHA-3), signature algorithms (DSA, RSA)
• 16.05.: ECC - Elliptic Curve Cryptography: as a promising alternative to well established asymmetric cryptosystems (DH, DSA, ElGamal) in constrained environments (smartcards, smartphones, etc.)
  
• 23.05.: PGP - Pretty Good Privacy: the probably most important cryptographic software system for secure e-mail transmission
  
• 30.05.: SSL/TLS - Secure Sockets Layer / Transport Layer Security: protocols for secure data transfer over the WWW (client-server communication) 
  
• 13.06.: Secure payment systems: SET, 3D-Secure (Verified by Visa, Mastercard SecureCode)
• 20.06.: Written examination
• 27.06.: Present project, turn in project report
• 03.10.: Alternative date to write examination

Supporting documents

PDF versions of slides will be made available on Monday before each lecture via KUSSS.