Discrete Mathematics

Discrete: Review 2

Turn this sheet in for points by Thursday 3/7

1) Write out the Addition and Multiplication tables for Z?

2) Find the values ?? and ?? so that

1 = 12?? + 23??

3) Shift Cipher

Decrypt INAP ADBQ with encryption shift of 9

4) Affine Cipher

Encrypt: FUN with 11?? + 5 (?????? 26)

5) RSA

Let’s use: ?? = 5, ?? = 11

a) Find ??, ??(??), ??(??)

b) What are the possible public keys using ??(??)?

c) If you choose ?? = 3, find ??

6) Induction

? 2?? + 1 ?

??? = ??(?? + 2)

Use at least three (3) quality references Note: Wikipedia and other related websites do not qualify as academic resources.

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