Features
- Cover Type: Paperback with 151 pages
- Published by: Aegean Park Press
- Edition: Revised Edition July 1976
- Written in: English
- ISBN 10 Number: 0894120034
- ISBN 13 Number: 978-0894120039
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Book Dimensions:
10.6 x 8.1 x 0.5 inches
- Weighs: 15.2 ounces
Book Description
These articles, previously classified, appeared in various issues of The Signal Corps Bulletin. Included in Vol. 1 are "Cryptanalysis" by William F. Friedman, "Problems of Code" by Marcel Givierge, "Solution of The Playfair Cipher" by Alf Monge, and "Analysis Versus The Probable Word" by Howell C. Brown. Two pages of Playfair Cipher problems for the student have been added to the text.