1. I had a hard time understanding the chosen plaintext and chosen ciphertext methods of attack for the affine cipher. The rest of 2.2 was pretty understandable, but I didn't quite understand the methods of attack, especially under the chosen plaintext when it says "The first character of the ciphertext will be alpha*0+beta=beta..." Maybe I just need to try to better understand the general ideas of chosen plaintext and chosen ciphertext.
2. My favorite part of the reading was in section 2.4 when it decrypts the declaration of independence. It was really cool to see letter frequency and pair frequency actually used to decipher such a seemingly difficult ciphertext. I'm going to use the letter frequencies given in the book to my advantage in hangman.
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