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FBI code cracking challenge

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jason

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Location: USA

Post Wed Dec 31, 2008 11:01 am

FBI code cracking challenge

As in previous years, the FBI has created a new crypto challenge

http://www.fbi.gov/page2/dec08/code_122908.html

Have fun folks :)
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alan

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Joined: Sat Dec 27, 2008 11:55 pm

Post Wed Dec 31, 2008 12:43 pm

Re: FBI code cracking challenge

cool, i didn't know about these! shame about the glaringly obvious clue in there!
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blackazarro

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Joined: Sun Aug 13, 2006 5:31 pm

Post Thu Jan 01, 2009 4:00 am

Re: FBI code cracking challenge

Cracked it!! That was easy.

cool, i didn't know about these! shame about the glaringly obvious clue in there!


And alan you're right, there is a give away clue that can help you crack it, but I guess that is the point of the challenge.
Security+, OSCP, CEH
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jimbob

Post Tue Jan 06, 2009 9:49 am

Re: FBI code cracking challenge

Yep, known (or guessed) plaintext is a powerful tool in cracking codes like this. Substitutions ciphers can fall very quickly when you can determine some of the letters in the code. Punctuation and letter spacing also helps a lot and in this case there's a very easy crib if you look about half way down.

Jimbob

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