CSCI361: Cryptography Online Exam Security concepts, Mathematics required, Secret key cryptography, Classical cryptography: Cryptography and Secure Applications Assignment, WUS, Singapore

Main topics

• Security concepts
• Mathematics required
• Secret key cryptography
• Classical cryptography
• Block cipher
• DES, AES
• Modes
• Message Authentication Code
• Public key cryptography
• Public key encryption
• Knapsack
• RSA, Rabin
• ElGamal
• Digital Signature
• ElGamal
• DSS
• Hash function
• Key management
• Secret sharing
• Applications

Security concepts

•  What, why, and who
• Assets & threats
• Security goals
• Security principles

Classical cryptography

• Cryptography vs Cryptoanalysis
• Kerkchoff’s Law
• Possible attacks
• Caesar cipher
• Monoalphabetic ciphers
  – Additive, multiplicative, affine
  – Keyphrase
• Statistical analysis
• Polyalphabetic ciphers
  – Vigenère cipher
• The Kasiski method
• The index of coincidence

Secret key cryptography

• One-time pad
  – Perfect secrecy
• Unicity distance
• Confusion and Diffusion
• DES design
  – Iterated cipher
  – Block and key size
  – The Feistel structure
  – Involution functions
  – Encryption and Decryption
  – S-box