Here's your fifth problem set. It's due at the beginning of class on **Monday, November 6th.**

#### Category: Problem Sets (Page 1 of 3)

Here's Problem Set #4. It's due at the beginning of class on **Monday, October 16th**. (That's the day after fall break.)

And you might find these Excel files useful for the first question.

Here's your third problem set. It's due at the beginning of class on **Wednesday, October 3rd.**

And some resources that might be useful...

- Friedman Test
- Breaking the Vigenere (prezi)

Here's your second problem set, in both Word and PDF formats. It's due on paper at the start of class on **Friday, September 22nd**.

And here are some Excel files you'll probably want to use on the first question:

If you have questions about using these Excel files, let me know.

Here's your first problem set, in both Word and PDF formats. It's due on paper at the start of class on Wednesday, September 6th.

In case they're helpful, here are some Excel files I've used in class.

Here's your fifth and final problem set, now updated with an eight problem! Problem Set 5 [Word], Problem Set 5 [PDF]. It's due at the start of class on Monday, November 13th.

Here's Problem Set #4: Problem Set 4 [Word], Problem Set 4 [PDF]. You may find these Excel files helpful for Question 1: Vigenere Cryptanalysis (4 Letter), Vigenere Cryptanalysis (5 Letter).

Problem Set #4 is due at the start of class on **Wednesday, October 14th**.

Here's your third problem set: Problem Set 3 [Word], Problem Set 3 [PDF].

It's due at the beginning of class on **Monday, October 3rd**.

Here's your second problem set, in both Word and PDF format: Problem Set 2 [Word], Problem Set 2 [PDF]. And here are two Excel files that will be useful for the first problem: Cryptanalysis - Substitution Cipher, Frequency Analysis [revised].

Problem Set #2 is due at the beginning of class on **Wednesday, September 23rd.**

Here's your first problem set, in both Word and PDF formats: Problem Set 1 (Word), Problem Set 1 (PDF). It's due at the start of class on Wednesday, September 9th.

In case they're helpful, here are some of the Excel files I've used during class: Modular Arithmetic, Decimation Cipher, Worksheet 1 - Cipher 1.

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