The final, conference-ready code for the #decodeme challenge is here.
Each year, at the AusCERT conference,
Sophos publishes a challenge in the form of a T-shirt. Visit the Sophos stand and you can pick up a T-shirt for yourself.
Solve the challenge and you're on your way to winning a remote controlled tank. You can read up on how to win
here, or ask us when you pick up your shirt.
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This year's puzzle fairly easy, as you've only got until 14:30 on Monday 16 May 2011 to solve it. Even a brute-force attack on the keyspace needs fewer than 500,000 tries. With a suitable dictionary, the search space drops below 5000. If you assume that the answer includes at least one four-letter English word, your search space drops to about 1000.
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The 2011 #DecoDeme challenge – the final, official version | Naked Security