2.1 and 2.4 were pretty easy to understand, but the section in 2.2 about known plaintexts confused me. the math dealt a little with division in modular arithmetic, and i’m still a little shaky on that. i’m sure i’ll get it with time, but i just need to practice it.
when i was reading the sections about the simpler ways of encoding messages, it made me feel hopeful. i really feel like i’ll be able to be successful in this class! (i may be speaking too early) i’m relieved that the book is starting with extremely basic methods, and i’m excited to learn more complicated methods!
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