CrypTool-Online (CTO) runs in a browser and provides a huge variety of encryption methods and analysis tools including many illustrated examples.
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 addition to the appealing appearance and the extensive scope of operation, the team of CrypTool developers must also be praised. Wishes regarding missing functionality or suggestions for improvement are always promptly acted on and, where possible, integrated into new versions. In addition, the path chosen for recent developments is in my opinion a great success: Especially the building-block design with the independent modules (e.g: encryption, hashes or signature) that can be combined in activities, will be an inspiration for students.”