"Installing CrypTool only requires a few clicks of the mouse, and learning how to use the application is equally straightforward. There is also an extensive amount of help available in each tutorial. In addition, new crypto algorithms and attacks are constantly being added to the (already impressive) CrypTool suite, making it ever more comprehensive in its scope."
Prof. Mark Stamp, San Jose, California, USA
New Version of CrypTool — CT 1.4.41 released
A new release of CrypTool 1 was published on March 27, 2018.
This mature version is available in 6 languages (German, English, Spanish, Polish, Serbian, and French). Compared to 1.4.40, it contains many small bug fixes and corrections (especially for functions using Animal, Flash, HTML, and PDF).
The website CryptoPrograms http://www.cryptoprograms.com is dedicated to create and solve classical ciphers online. New on this site are analyzers for solving classical ciphers without any knowledge of the keyword and, in many cases, the key length. Routines for solving around 40 cipher types are provided.
What is JCrypTool?
JCrypTool (JCT) is an open-source e-learning platform, allowing to experiment comprehensively with cryptography on Linux, MAC OS X, and Windows.