JCrypTool (JCT) is an open-source e-learning platform, allowing to experiment comprehensively with cryptography on Linux, MAC OS X, and Windows.
New CT2 Beta
The 10th Beta of CrypTool 2 was released on 19th October 2013. You are cordially invited to test and give feedback. Final version of CT 2 is planned to be published in April 2014.
Third public beta of CrypTool 1.4.31
The new CrypTool 1.4.31 beta is ready. This version is now available in 6 languages German, English, Spanish, Polish, Serbian and Greek. We would appreciate if you test this beta in detail and give us feedback. The release version of CT 1.4.31 is scheduled for mid 2014. (2013-10-04)
Crypdroid - Android app for secure encryption
Crypdroid encrypts messages with AES and encodes the ciphertext in a way that it could be sent as a normal text message. It is compatible with the dedicated tool within CT2. (2013-08-04)
"In the last few years, CrypTool has become to an indispensable part of my lectures in IT security. Due to its broad concept, the clear structure, and the explicatory and illustrative character, the software is suitable both for the lecturer's presentations and the student's self learning. CrypTool is very stable and consistent."
Professor Roßbach, Frankfurt School of Finance and Management