DOCID_607324_SEALED_OK.PDF

Doc ID: 607324
Doc Ref ID: A2660735
NATIONAL CRYPTOLOGIC MUSEUM 
Do·cen.t . Bo-ok 
January 1996 
Approved for release in FOIA Case 114591 as released in FOIA case 40313 on June 17, 2002

Doc ID: 607324                                      Doc Ref ID: A2660735
National Cryptologic Museum 
Docent Book 
January 1996 
The material in this briefing book was prepared with contributions from the following individuals 
(listed in alphabetical order): 
Charles Baker 
Earl J. Coates 
David W. Gaddy 
David A.Hatch 
John K. Hultstrand. 
JackE;lngram 
Thomas R. Johnson 
Jeanne-Rene Jones 
Lawrence R. Sharp 
1. This book should be studied by all who wish to serve as docents at the National Cryptologic 
Museum. Tour presentations should be based on this· material, although it may (and should…

| Doc IP: 607324 Doc Ref ID: A2660735 Table of Contents Suggested Reading ............ ccc cece cece eee 3 | Entrance Corridor ..............c cc cece ccesceuceus 3 Rare Books ......... 0.0.0 ec cece eee e eee n ees 5 Cylinder Cipher ........... ccc ccc ee ee eee eee eee 5 American Civil War ............ 0... cece cece ee eeees 6 Confederate Cipher Cylinder .................. 8 General Hooker’s Codebook ................... 8 World Warl 2.00... . ccc cece cece cee eee eeeees 9 The American Black Chamber .................0000: 9 Navy Cipher ............. 20. e eee eee e eens 10 The-Friedmans ...…

oe Doc ID: 607324 Doc Ref ID: A2660735 | Ey 23 KY-38 11. cece cece tee ete eee neees 23 KY-65 ok. ccc cee cece eet e cee enees 24 KY-57 oo... ecee cece e ees wee eeeeeeeeeeeeneees 24 Evolution of Voice Security Equipment ............. 24 SIGSALY .......... ccc cc eee e eens 24 Secure Telephones ...................00e00ee 24 STU-H oo. ccc eee cece eens 24 The Hot Line ............ cece cece cece cece ee eeees 25 | Computer Development ..................2200eeeee 25 Harvest ....... cece eee cee eee e cece enes 25 Supercomputers ........... 2.20. cece cee eee eees . 25 Microchips .......... eect …

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SUGGESTED READING FOR DOCENTS 
* All unclassified public;ations from the Center for Cryptologic History 
* Selected Special Research Histories, including: 
SRH-003 "The Influence of US Cryptologic Organizations on the Digical Computer Industry" 
SRH-256 "The Attack on the USS Liberty" 
I. The following are generally reliable and will be of assistance in conducting museum tours: 
Carl Boyd: Hitler's Japanese Confidant 
Edward Orea: MacArthur's ULTRA 
David Kahn: The Codebreakers; Seizing·the ENIGMA 
Ronald Lewin: The Ameri…

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ENTRANCE CORRIDOR 
The text and pictures in the entrance corridor contain basic definitions of cryptoiogy, including 
both Signals Intelligence (SIGINT) and Information Systems Security (INFOSEC). Many 
museum visitors will know these by their former designations, '"Communications Intelligence" 
(COMINT) and "Communications Security" (COMSEC). 
NSA was formed in November 1952 by President Harry S Truman as a separateiy organized 
agency within the Department of Defense. The Agency drew on the experience and expertise oi 
…

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HALL NUMBER 1 
RARE BOOKS 
The central case contains a number of rare books, including the first book published in the 
western world on cryptology, the Poligraphique of Johannes Trithemius. published in 1518. This 
year the museum can display a first edition, thanks to a loan by Dr. David Kahn. (The museum 
owns a later edition of this rare book). Also on display is the second book on cryptology in the 
western world, the Opus Novum of Jacopo".'Silvestri~ published in 1526. 
It is necessary to qualify our statements abou…

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gobbledegook: this constitutes the encrypted text, which is sent to the other communicator. The 
recipient of the message reverses this process. 
Interestingly, although the concept for this device was lost, the U.S. Army independently came 
up with an almost identical design in the early 20th century, a metallic version of this device --
given the nomenclature M94 -- for low-level tactical encryption through World War Il. 
AMERICAN CIVIl., WAR 
During America's first century, secret writing -- cryptography -- figured in …