This page has the information and links from the Cryptography Topics in Dr. Whitaker's section of Math 111.

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For a preview of some of the new material, see this Wikipedia page about Caesar ciphers.

Slides on Cryptography

Notes on Cryptography
Notes on Cryptography with some Solutions.

For more notes and examples, please see the Lecture Slides and Notes for Dr. Nguyen's Section of Math 111.

These Khan Acadamy videos explain more about how the RSA cipher works; see RSA encryption Steps 1-4.

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Alphabet with Numbers table

September 30 Worksheet

September 30 Worksheet Solutions

October 2nd Worksheet

October 2nd Worksheet Solutions

October 7th Worksheet

October 7th Worksheet Solutions

October 14th Worksheet

October 14th Worksheet Solutions

October 16th Announcements before Class

October 16th Worksheet

October 16th Worksheet Solutions

Announcements for October 21

Topic List for Exam 2

October 21st Worksheet

October 21st Worksheet Solutions