CrypTool Primes Number Theory Cryptography Links Books Website Links to teaching projects Download CryptoClown.exe   The website of Bill Buchanan, a Professor at the Edinburgh Napier University is one of the most extensive web sites for practically learning encryption methods. – Crypto material with interactive parts and code in JS and Python 2 – Several codes and ciphers as small challenge – Classical printable forms used for a cipher CTF generator – A number of undergraduate and postgraduate modules The Kryptologikum is a collection of KIT with many historical exhibits in display cabinets, plus many hands-on experiments, where everyone can learn in a playful way about the principles of modern cryptography. Emma’s blog with a 1-page overview about crypto resources. This blog at Norton360Online is educational, and avoids – to our knowledge – any ‘marketing’. Website with nearly all in the GDR used codes and encrytion mechanisms — (only German) Good reading introductory