CrypTool 2 (CT2) is an open-source program offering an innovative visual programming GUI to experiment with cryptographic procedures and to animate their cascades.
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)
"CrypTool 2 is a great app. All of my students use it every semester. Students have really enjoyed doing the projects that use CrypTool. They really like seeing how encryption works. CrypTool makes learning cryptography fun. I highly recommend it to undergraduate and graduate students. I wish there were more room in my books to write more about CrypTool."
Dr. Randall Boyle, Professor at Longwood University (Virginia)