Cryptology Slide Decks

  1. Quick and Dirty Cryptology History
  2. Basic Definitions and a Simple Example
  3. Affine and Multiplicative Ciphers
  4. Introduction to Frequency Analysis
  5. Polyalphabetic Ciphers
  6. Breaking Polyalphabetic Ciphers
  7. Transposition Ciphers
  8. Breaking Transposition Ciphers
  9. Perfect Secrecy
  10. Hill’s Cipher
  11. Decrypting Hill’s Cipher
  12. Ciphers and Number Theory
  13. Fundamental Theorem of Arithmetic
  14. Exponents and the \(\phi\)-Function
  15. Asymmetric Ciphers (Updated 4/30/2025)
  16. Bits, Bytes, and Feistel
  17. Feistel, DES, and AES (Updated 3/12/2025)
  18. Data Encryption Standard
  19. Elliptic Curve Cryptology (Updated 1/29/2025)
  20. Elliptic Curves FY Edition
  21. Lattice Based Encryption