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.

RECOMMENDED PAGES


U.S. KL-7
ADONIS

Enigma
Simulator

One-Time
Pad

Numbers
Stations

Operation
Tinker Bell

SIGINT
Blog
  ENIGMA
Enigma History
How Enigma Works
Message Procedures
The U-boat War
Kurzsignale
M4 Project and U-264
Enigma at School
Enigma Simulator
Codebook Tool
Enigma FAQ's

U.S. TSEC/KL-7
KL-7 Tech & History *
KL-7 Simulator

HAGELIN
Hagelin Crypto AG
B-21
C-52/CX-52
BC-52 Simulator
M-209 Simulator


OTHER MACHINES
Machines Timeline
Colossus
Focus on Photo
Focus on Machines
CRYPTOGRAPHY
Crypto - Brief History
One-time Pad
Checkerboards
Hand Ciphers
Rasterschlussel 44
Secret Splitting
Visual Cryptography
The Gold-Bug
Amanda Pinson
SHA-256 Secure Hash

SIGNALS
Cold War Signals
Numbers Stations
TEMPEST
Shortwave Listening

SOFTWARE
Simulators
Cipher Classics
Crypto Box
Numbers 9.0

CHALLENGES
Enigma Challenge
Crypto Box Challenge
Elite Box Challenge
Operation Tinker Bell *
The Crow's Cryptogram

WEBSITE
Articles
Links
Downloads
Book Reviews
About the Website

NEWS CAST BLOG
Crypto News 30 *
Crypto's Cast 3
SIGINT Chatter 279

CONTACT
E-mail
Guestbook

SCREEN ZOOM IN
Press CTRL & Scroll


Amanda Pinson Honoring

CONTACT & INFO


E-mail

Guestbook

News*

Off-Site

About

Archive
 

RECENT UPDATES * 25 January 2026 Refresh for Latest Updates

Enigma History Py-Enigma I, M3 and M4 Python library by Brian Neal.
Crypto News 20 archived blog posts added to Crypto News pages 1 and 2.
Operation Tinker Bell Ege Özdemir from Turkey is 33rd to complete operation.
Enigma Challenge Ege Özdemir from Turkey is 95th to complete challenge.
Crypto News History of the KL-7 ADONIS & POLLUX - The Final Update?

COPYRIGHT & PRIVACY INFORMATION

This website is created for educational purposes, and its content is protected by international copyright laws. Use of content only after permission. Copyrights, privacy, cookie policy and disclaimer.

© Dirk Rijmenants 2004 - 2026 views
 

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