6COM1040 Cyber Security

The following slides are from the Spring lectures delivered during Semesters B of the Session 2017-2018.

Lecture 1	Cyber Security: · Aspects of Cryptography from a Classical and Quantum Perspective · Definitions, Properties, Standard Threat Model, · Symmetric key ciphers: Vernam (One Time Pad), DES, AES, … · Asymmetric key ciphers:, Diffie-Hellman, RSA, El Gamal
Lecture 2	Asymmetric Key Schemes: · The Integer Factorisation Problem (IFP), RSA · Encryption, Decryption and Digital Signatures
Tutorial 1 & 2	Security 1 and Answers
Lecture 3	Groups and RSA Cyclic Groups, Primitives, Orbits, and the Integer Factorisation Problem Groups and El Gamal Cyclic Groups, Primitives, Orbits, and the Discrete Logarithm Problem (DLP) Groups, Subgroups, Diffie-Hellman and the El Gamal Algorithm.
Lecture 4	El Gamal Algorithm – Encryption and Decryption El Gamal Algorithm (+ Answers)
Tutorial 3 & 4	Security 2 A and Answers Security 2 B and Answers
Lecture 5	Discussion on Answers to Security 2 A
Lecture 6	Key Exchange (using RSA) and Key Agreement (using Diffie Hellman) The Diffie-Hellman Protocol and El Gamal (Encryption and Decryption) DES The Data Encryption Standard and sub-Key Algorithm
Tutorial 5 & 6	Security 3 and Answers Security 4 and Answers

If you have any queries then you can email me on j.spring@herts.ac.uk

Updated 28^th February 2018.