University of Virginia, Department of Computer Science
CS551: Security and Privacy on the Internet, Fall 2000

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Challenge 1: Jefferson Wheel Ciphertext

Decrypt the message in http://www.cs.virginia.edu/cs551-security/challenges/message1.txt (to be posted 30 August 2000) which was encoded using a Jefferson wheel with 36 wheels.

Hints revealed on September 12: wheels, extra ciphertext.

Hint revealed on October 9: makekey.c (this is the program I used to generate the encryption key)

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


CS 655 University of Virginia
Department of Computer Science
CS 551: Security and Privacy on the Internet
David Evans
evans@cs.virginia.edu