ITO5163 Assignment 2

Module 1:

• Lesson 1: Introduction to computer security

  • Introduction to computer security

  • Challenges to computer security

  • Types of security attacks

  • The OSI security architecture

  • Security - Functional requirements and design principles

  • A model for network security

• Lesson 2: Number theory

  • Mathematical foundations in cryptography

  • The division algorithm

  • The Euclidean algorithm

  • Modulo arithmetic

  • [[Fermat’s little theorem]]
  • [[Euler’s totient function and Euler’s theorem]]

  • Extended Euclidean algorithm

  • Chinese remainder theorem

  • Groups, rings, fields

• Lesson 3: Mathematical hard problems

  • Need for hard problems

  • Integer factorisation problem

  • Discrete logarithm problem

  • Quadratic residuosity problem

Module 2:

• Lesson 4: Introduction to symmetric cryptography

  • What is symmetric cryptography?

  • Block ciphers versus stream ciphers

  • Substitution versus transposition ciphers

  • Monoalphabetic versus polyalphabetic ciphers

  • Block cipher modes

• Lesson 5: Symmetric cryptosystems

  • Caesar cipher

  • Rail fence cipher

  • Playfair cipher

  • Hill cipher

  • Vigenère cipher

  • Vernam cipher and one-time pad

  • Codebook cipher

  • Feistel cipher

  • Data Encryption Standard (DES) / Triple DES (3DES)

  • RC4

  • Blowfish and Twofish

  • Advanced Encryption Standard (AES)

Module 3

• Lesson 6: Introduction to asymmetric cryptography
  • [[Lesson 6_ Introduction to Asymmetric Cryptography.pdf]]

  • Introduction to asymmetric cryptography

  • Applications of asymmetric cryptosystems

  • Trap-door one-way functions

• Lesson 7: Asymmetric cryptosystems
  • [[Lesson 7_ Asymmetric Cryptosystems.pdf]]
• Lesson 8: Advanced asymmetric cryptosystems
  • [[Lesson 8_ Advanced Asymmetric Cryptosystems.pdf]]

Module 4

[[Lesson 9_ Authentication.pdf]] [[Lesson 10_ Integrity verification.pdf]] [[Lesson 11_ Methods and Key Establishment Protocols.pdf]]

Module 5

[[Lesson 12_ Attack models.pdf]] [[Lesson 13_ Cryptanalysis using Cryptool 2.pdf]]

Module 6

[[Lesson 14_ Blockchain.pdf]] [[Lesson 15_ Lightweight security.pdf]] [[Lesson 16_ Database Security.pdf]]