Welcome to the CrypTool Portal

The CrypTool Portal (CTP) is the starting page of the CrypTool project. Its aim is to raise awareness and interest in crypto techniques for everyone.

The CT project develops the world's most-widespread free e-learning programs in the area of cryptography and cryptanalysis. All learning programs in the CT project are open source and available for free.

E-Learning Platforms

Crypto Challenge Contest

Want to participate?

Volunteers, especially programmers, and students planning to write their thesis in the area of cryptography, are always welcome to join in the further development of the CrypTool project. You will experience project management in a distributed open-source project.

What our users say:


General News

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CrypTool 2 Release 2022.2 released

In December 2022 we released "CrypTool 2 – 2022.1", the first release this year. The last CrypTool 2 release was pu...

Read more ... 12/24/22
CrypTool 2 Release 2021.2 released

In December 2021 we released "CrypTool 2 – 2021.2", the second release this year. The last CrypTool 2 release was p...

Read more ... 12/24/21
New Version of CrypTool 1 — CT 1.4.42 released

CrypTool 1.4.42 was published on December 21, 2021.

Read more ... 12/21/21

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