SUNY Geneseo Department of Computer Science


Substitution Ciphers

Thursday, January 23

Intd 105 13, Spring 2014
Prof. Doug Baldwin

Return to List of Lectures

Previous Lecture

Misc

Syllabus: dates give time intervals over which we’ll be focusing on certain things, not definite due dates.

You can read and edit these notes if you want

Questions?

“The Adventure of the Dancing Men”

Comments (interesting points, plot summary, etc.)?

The cipher

How Holmes broke it

Try it

Essay 1

Describe your thinking as you break another substitution cipher

Handout

Ethics and Cryptography

When is it OK to keep a secret, to try to discover someone else’s secrets, etc.

For example

We’ll look more deeply at such questions after we critique the code-breaking essays. But first…

Next

Peer critiques of draft cipher-breaking essays

Bring 2 printed copies to class (not necessarily final or polished)


Next Lecture