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)
"I´m a information security teacher here in Sao Paulo, Brazil and wanna say thanks to your team! Your tool is amazing and let the students know more and see the complex, but wonderful world of cryptography :)"
Nichols, FATEC - Faculdade de Tecnologia de São Paulo
The new CrypTool Portal has been gone live on 12th January 2012.