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Submit Challenge

Please send the challenge you created (packed within a single .zip file) to the following address: mtc3@cryptool.org

The .zip file should contain the following:

  • A challenge description (a text document is sufficient, we take care of the formatting),
  • a secret text and the corresponding plaintext,
  • a solution (solution phrase) which users can acquire from the revealed plaintext,
  • a binary (C/C++) or script (Python, Perl) for automatically verifying solutions (optional),
  • a suggestion for the level your challenge should be part of,
  • a suggestion for the maximum number of attempts as well as
  • the name of the author of the challenge (optional).