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Cryptology notes by Michael Purser

The following notes for the course on cryptology were assembled, corrected, retyped and generally beaten into shape by Christina Ruddle. I am extremely grateful to her. All mistakes are mine not hers.

These lecture notes pertain to a course I last delivered in 2008-09 and which I expect to offer again in 2010-11. The previous module code was 374.

1. Intro and Background
2. Symmetric Encryption Algorithms
3. Modular Arithmetic
4. Public Key Cryptology - Part I
5. Public Key Cryptology - Part II
6. Hash Functions
7. Random Numbers
8. Factorising and Finding DL
9. Factorising and DL Using a factor base
10. Elliptic Curves
11. DCA
12. LCA