CrypTool 2 (CT2) is an open-source program offering an innovative visual programming GUI to experiment with cryptographic procedures and to animate their cascades.
MysteryTwister C3 (MTC3) is an international Crypto Cipher Contest offering a broad variety of challenges, a moderated forum and an ongoing hall-of-fame.
Testing RSA moduli for shared prime factors. Full article (2012-05-24)
CrypTool News
New CT2 Beta
The 9th Beta of CrypTool 2 was released on 20th December 2012. You are cordially invited to test and give feedback. Final version of CT 2 is planned to be published in April 2013. (2013-01-02)
First public beta of CrypTool 1.4.31
The new CrypTool 1.4.31 beta 05 is ready. You are cordially invited to test and give feedback. Final version of CT 1.4.31 is planned to be published mid 2013. (2012-07-31)
RSA sanity check
Testing RSA moduli for shared prime factors. Full article (2012-05-24)
Land der Ideen - Statements
"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
