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Decrypt this!

#1 User is offline Caitlin 

Posted 28 May 2011 - 07:09 PM

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Over the past few months, I've been taking some weekend classes in digital security, which will ultimately lead up to OMG BIGGER SECRET THINGS. We have an assignment that will lead into our next chapter: create an encryption method. He didn't say how complex or simple, just to get it done by the next weekend.

So, I think I've got something. It's admittedly probably very easy to crack as I've only worked on it for about an hour (20 of those minutes being spent to program a quick encrypter and decrypter program pair).

Assuming no hints, as honestly your "enemy" will not know what to expect in terms of which encryption method is being used, I want to see if anyone can solve this:


That is the code to crack. You have until June 4th, 12:00 AM EST to crack it. Good luck.

After the week is up, I'm afraid I won't be able to give the answer out if the teacher of the class determines that I've made the best encryption method out of the rest of the class. He said he'll use the best method for something, so if I give out the answer, eventually it could be reverse engineered a lot easier than if it's just left to sit. :P However, since that's unlikely, feel free to get your hopes up.

edit: the string decided to bastardise itself, fixed
This post has been edited by Caitlin: 28 May 2011 - 07:10 PM

#2 User is offline Meat Miracle 

Posted 28 May 2011 - 10:21 PM

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Correct me if I'm wrong, but a completely unknown encryption cannot be cracked with such a minimal sample.

For all we know, it may be a crc32, converted to base64, run through strtr with a separately stored salt. (As in, a one way algorithm, and therefore impossible to decrypt but still very useful for password encryptions.)

#3 User is offline Caitlin 

Posted 29 May 2011 - 12:27 AM

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Alright, some hints I guess.

The end result will be in English using a roman alphabet. There's a typo in the unencrypted text since I'm retarded.
There is no punctuation or special ascii characters involved.
It's split into 5 parts. If you can find one part and figure that out, the rest should fall into line shortly.
Edit: There are no compression algorithms used.

Also, the board loves screwing with long lines, so the two lines are supposed to be one long string.
This post has been edited by Caitlin: 29 May 2011 - 12:28 AM

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