1) I don't exactly understand how Bob makes n and e public. What does it mean to have a public key crypto system? In what way would he make it public? And would it make it easier to decrypt? Less unsafe? And although we have been practicing working with really really big exponents, how in the world are we going to deal with ones this big..?
2) I think it is cool that we can use this basic number theory for encryption. I was trying to imagine how we would use Euler's equation for a cipher, but I like to see the application. I also think it is funny their is a method called PGP (Pretty Good Privacy). Why does it not matter if e-mail is that secure? Why do we encrypt e-mails? For security? Or to make sure what is sent stays true to what was intended to be sent?
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