New Update Site - CrypTool Portal

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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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Land der Ideen - Statements

"On the one hand, CrypTool has very efficient implementations including cryptanalysis and all relevant standards. So the tool is technically very useful. On the other hand, the visualization and presentation of the cryptographic techniques in CrypTool is excellent and there is no system that I know of that combines those two qualities in such an outstanding way."

Prof. Dr. Johannes Buchmann, TU Darmstadt

CrypTool News

New Version of CrypTool — CT 1.4.41 released

A new release of CrypTool 1 was published on March 27, 2018.

This mature version is available in 6 languages (German, English, Spanish, Polish, Serbian, and French). Compared to 1.4.40, it contains many small bug fixes and corrections (especially for functions using Animal, Flash, HTML, and PDF).

New Release of CrypTool — CT 1.4.40 released

A new release of CrypTool 1 was published on September 21, 2017.

This version is available in 6 languages (German, English, Spanish, Polish, Serbian, and French), and it contains many bug fixes and corrections.

CryptoPrograms with Online Analyzers

The website CryptoPrograms http://www.cryptoprograms.com is dedicated to create and solve classical ciphers online.
New on this site are analyzers for solving classical ciphers without any knowledge of the keyword and, in many cases, the key length. Routines for solving around 40 cipher types are provided.

(2017-07-30)

The JCrypTool update site moved to http://www.cryptool.org/jct/update. This URL must be updated in JCrypTool manually if you are using a release older than release candidate 5a.

Launch JCrypTool and open the preferences via Window - Preferences
Expand the Install/ Update section and select Available Software Sites
There should be one entry with the location http://www.cryptool.org/jcryptool/update
Select this entry and click Edit
Replace the location link with the new update site URL http://www.cryptool.org/jct/update
You can give the update site a name optionally (in case this wasn't filled automatically)
Click OK to close the dialog and OK to close the preferences

That's it. Now you can use the update manager again.

In case you are already using release candidate 5a (RC5a) you do not have to update the URL.

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