The Chaocipher Clearing House
Progress Report #23
Jeff Calof submits the solution to Kruh and Deavours's
1990 Chaocipher challenge
Paper written by Jeff Calof et al describes the history, analysis,
The January 2014 issue of Cryptologia carries a paper authored
by Jeff Calof (with co-authors Jeff
Hill and Moshe Rubin) entitled "Chaocipher
Exhibit 5: History, Analysis, and Solution of Cryptologia's 1990
Challenge" (see progress report #22). Jeff has now
submitted a short paper entitled "Chaocipher: Exhibit 5 Solution"
presenting the solution to Kruh and Deavours's three-message challenge
in the July 1990 issue of Cryptologia.
Jeff found Kruh and Deavour's printed document during a visit to
the National Cryptologia Museum in Ft. Meade, MD in May 2013. The
purpose of Jeff's visit was to examine the treasure trove of
material donated by Patricia Byrne, wife of John Byrne and
daughter-in-law of John F. Byrne.
(c) 2012-2014 Moshe Rubin
Created: 22 March 2014