I am more impressed by whoever came up with the challenge, although setting the second parameter of md5 to 'true' made it obvious what the solution to the puzzl

I am more impressed by whoever came up with the challenge, although setting the second parameter of md5 to 'true' made it obvious what the solution to the puzzle was (nobody would ever have binary output on irl). The French team came up with the solution quicker as they worked out that any '=' would work - their keyspace search was thus an order of magnitude quicker: http://blog.nibbles.fr/2039 http://blog.nibbles.fr/2039