CrypTool 2

Windows app for interactively learning cryptography and cryptanalysis with 200+ visual components.

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CrypTool 2 is a free, open-source Windows application for interactively learning cryptography and cryptanalysis. It offers a visual-programming interface with a large library of components and ready-made templates covering classical and modern ciphers, so students and enthusiasts can see how encryption and cryptanalysis algorithms behave rather than only reading about them.

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