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Did you know?

That CrypTool was originally designed as an internal business application for information security training. CrypTool has since developed into an important open-source project in the field of cryptology. Over 50 volunteer developers worldwide contribute to the program.

CrypTool in Education


Humanity has concerned itself with the topic of cryptology for three thousand years. However, until the mid-20th century it was a topic of importance to only a small interested group -- diplomats and the armed forces. In any military conflict, exchange of confidential information and eavesdropping is crucial for survival. Due to the sensitive subject matter the vast majority of crypto research was done in secrecy in the past.

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CrypTool for Awareness


When we talk about awareness, or security awareness, we usually mean the consciousness for general concerns of information security. Hence, awareness is not only about cryptology, e.g. the encryption of confidential data, but also about a much broader topic. The following figure aims to illustrate this fact:

cryptology en1

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Cryptography for Young Learners

This event for teachers and students was held for the first time in 2009. The goal is to teach students, with the help of the freely available CrypTool software, about encoded messages and the importance of cryptography in the modern digital world. See http://www.cryptool.org/schuelerkrypto (German only)

Portal for teachers

For teachers who want to introduce their pupils into the fascinating world of cryptography the CrypTool project started the Cryptoportal for teachers (only german). On this portal teachers could exchange learning material and have a discussion about it.
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