The most difficult part of section 7.2 to understand is the part about finding discrete logarithms using the index calculus.
Discrete logs are a completely new topic for me, though I feel like I've heard the term a lot before. Anyway it's totally different from what I thought it was. The analogs of certain operations, such as exponentiation, taking square roots, and taking logarithms, in modular arithmetic are very interesting to me. I'm encountering most of them for the first time in this class, but it's definitely helping me to realize that modular arithmetic is a broad field of study with lots of important applications.
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