Introduction to Galois Fields for AES
A slecture by student Katie Marsh
Based on the Cryptography lecture material of Prof. Paar.
Link to video on youtube
Accompanying Notes
Finite Field/Galois Field: a finite set together with operations + and * with the following properties:
1. The set forms an additive group with neutral element 0
2. The set without 0 forms a multiplicative group with neutral element 1
3. The distributive law $ a(b+c)= (ab)+(ac) $
A finite field exist if and only if it has size $ p^m where p is prime and m \in \N $
Questions and comments
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