"I have been using CrypTool as a software tool to demonstrate the working principles of cryptographic algorithms and protocols, and to complement m lectures on computer and network security accordingly. My experience is that students like to work with CrypTool and to discover the wide range of cryptographic algorithms and protocols it implements. The tool provides an excellent playground to do lab studies and exercises."
Prof. Dr. Oppliger, University of Zurich
New Release of CrypTool — CT 1.4.40 released
A new release of CrypTool 1 was published on September 21, 2017.
This version is available in 6 languages (German, English, Spanish, Polish, Serbian, and French), and it contains many bug fixes and corrections.
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.
Release Candidate 8 available
JCrypTool 1.0.0 Release Candidate 8 is available on our download page.