What is CrypTool 1

CrypTool 1 (CT1) is an open-source Windows program for cryptography and cryptanalysis. It’s the most wide-spreaded e-learning software of its kind.

What is CrypTool 2?

CrypTool 2 (CT2) is an open-source program offering an innovative visual programming GUI to experiment with cryptographic procedures and to animate their cascades.

What is JCrypTool?

JCrypTool (JCT) is an open-source e-learning platform, allowing to experiment comprehensively with cryptography on Linux, MAC OS X, and Windows.

What is CrypTool-Online?

CrypTool-Online (CTO) runs in a browser and provides a huge variety of encryption methods and analysis tools including many illustrated examples.

What is MysteryTwister C3?

MysteryTwister C3 (MTC3) is an international Crypto Cipher Contest offering a broad variety of challenges, a moderated forum and an ongoing hall-of-fame.

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CrypTool News

Join the #CSCG

The Cyber Security Challenge Germany (CSCG) is the German hacking competition for pupils and students. There are 12 online challenges starting on May 2nd, 2016. The juveniles have to solve different IT-Security tasks till August.
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Cryptology game CODEBREAKERS.EU -- 4th edition

On 1st of June 2015 the first of 6 tasks starts on the Enigma level. For three weeks two times per week new documents with tasks are published.

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CT 2.0 released

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)

 

Land der Ideen - Statements

“CrypTool can be highly recommended for experimenting with the individual algorithms.”

Joachim Swoboda, Stephan Spitz, Michael Pramatefta

Release Candidate 7 available

JCrypTool 1.0.0 Release Candidate 7 is available for download! This release contains a lot of bugfixes, feature enhancements and six new crypto plug-ins.

JCrypTool 1.0.0 Release Candidate 7 is available for download! This release contains a lot of bugfixes, feature enhancements and six new crypto plug-ins:

  • New visualization plug-in Extended RSA
  • New visualization plug-in Signature Demonstration
  • New visualization plug-in Public-Key Infrastructure
  • New visualization plug-in Huffman Coding
  • New visualization plug-in Shanks Babystep-Giantstep
  • New games plug-in Divide

Thanks to all our contributors!

All changes are listed on the Core Issues and on the Crypto Issues pages.

This is our last release candidate, the final version will be available 2015. Your bug reports and your feedback are welcome (as always).

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