CIPHER
MACHINES AND CRYPTOLOGY Technical and historical
information about cipher machines and the
fascinating world of cryptology
WELCOME
This website covers WW2 and Cold War era cipher
machines, detailed technical and historical
information, and manual ciphers. Learn how the
equipment works and how it was operated. You can
download realistic software simulations that work
exactly like the real machines. This website is
also preserved on the Internet Archive.
History TSEC/KL-7 Version 5.2 more details,
clarifications and improved text. KL-7 Tech & History NATO docs Walker and Helmich spy cases
added. Enigma
Challenge Yingjie Wang
from China is the 91st to complete challenge. Crypto
News Papers from
British computer pioneer Alan Turing auctioned. Elite
Box Challenge George
Lasry from Israel fourth to solve one Elite Box.
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& PRIVACY INFORMATION
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for educational purposes and its content is
protected by international copyright laws. Use of
content only after permission. Copyrights,
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