University of Virginia, Department of Computer Science
CS588: Cryptology - Principles and Applications, Fall 2001

Lectures | Manifests | Problem Sets | Projects | Resources | Syllabus | Challenges | Calendar

Challenge 1: Jefferson Wheel Ciphertext

Jefferson Wheel Cipher

Decrypt the message in http://www.cs.virginia.edu/cs588/challenges/jefferson-wheel.txt which was encoded using a Jefferson wheel cipher with 36 wheels.

The message was encrypted by taking groups of 36 letters, turning the wheels to align the plaintext, and then selecting a random row along the wheels as the ciphertext.

The value of a satisfactory solution to this challenge is 100 points (one problem set).

Hints reveals on 2 October: Wheels, Additional Ciphertext

Solved by Geoff Stoker, student in last year's CS551 course, 30 November

(If you want to look at last year's Jefferson Wheel Challenge, that's okay, but the message, wheels and key are different this year. No one solved last year's challenge.)


CS 655 University of Virginia
Department of Computer Science
CS 588: Cryptology - Principles and Applications
David Evans
evans@cs.virginia.edu