The release version of CrypTool 2.0 was released on 20th Aug 2014. We would be happy if many of you use it for teaching, self-study, education and awareness and give us feedback. (2014-08-25)
Article about solving the Double-Transposition Challenge in Cryptologia
A level X challenge in MysteryTwister C3 by Klaus Schmeh using the double-column transposition cipher withstood a long time against cryptanalysis efforts. Nevertheless, it was solved in November 2013 by George Lasry. (2014-06-25)
"The crypto tools you made available are really great for learning how algorithms work. CrypTool has been used for understanding better the various options offered by existing security algorithms. Security of data is a point of upmost importance in mobile telecommunication and particularly in the sim card environment."
Guido Annaert, telecommunication industry, September 2014