Short introduction to CrypTool 2:

Official YouTube channel of CrypTool 2:

YouTube playlist for CrypTool 2 plugin development:

Introduction pdf (workshop) about CrypTool 2:

Wiki for CrypTool 2 developers:

Access to the CrypTool 2 source code:

User: anonymous
Pass: No password required

The source code can be read and downloded anonymously. Ideally, you should use an SVN client like TortoiseSVN

Please be aware that we only allow write access for people who have proven to develop source code at an acceptable quality level and on a longer term basis. You are most welcome to get in touch with us and discuss further details. We also support newbies to learn this.