Crypto challenge 2

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Hex22
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Postby Hex22 » Sun Mar 21, 2004 6:52 pm

I saw this topic in the forum, which was about a cryptology challenge. I've decided to give you one:

U29tZSB0ZXh0IGFuZCBhIGdvb2QgZW5jcnlwdGlvbiBzb2Z0d2FyZSBpcyBhbGwgeW91IG5lZWQg
dG8gbWFrZSBhIGNyeXB0b2dyYW0uIEkgaGF2ZSB0ZXh0LCBidXQgaWYgeW91J3JlIHJlYWRpbmcg
dGhpcywgbXkgc29mdHdhcmUgd2Fzbid0IHN0cm9uZyBlbm91Z2gu

That's the cryptotext. Now, in order to decrypt it, search the forum. If you've got  Gamebible 3 by yourselfs, you have what it takes.
Good luck!
My name: Hexadecimal 22.
My format: Virus.
My destination: Mainframe. ReBoot! Vote please!!
Hex22
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Postby Hex22 » Mon Mar 22, 2004 5:03 pm

OK, understood.
You need an another clue.
Clue: OTP.
It's much easier than you think.
Trust me.
My name: Hexadecimal 22.

My format: Virus.

My destination: Mainframe. ReBoot! Vote please!!
CrashWorship
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Postby CrashWorship » Mon Mar 22, 2004 8:54 pm

I'm sorry man, I don't hav eany experience decrypting things and wouldn't know how or where to start with this one.
To my eyes it looks intimidating.
Intimidation isn't what stopped me though,...it was lack of knowledge that did me in.
Earth = 12.76 x 10+6 = 12,760,000 meters wide
(12.76 million meters)Plant Cell = 12.76 x 10-6 = 0.00001276 meters wide
(12.76 millionths of a meter)connections are everywhere if you just know where to look.
Thehacker256
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Postby Thehacker256 » Mon Mar 22, 2004 8:56 pm

you're going to have to give us a bigger clue than that pal.
I would think of a cool signature, but my titanic brain is too busy pondering more important things.
Hex22
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Postby Hex22 » Mon Mar 22, 2004 9:20 pm

OK. A bigger clue you'll get.
Search in Google for OTP software.
You'll find only one prog.
Download it. Figure out how it works. use the other option of the prog, not the main one. Use the Force.
If that's not enough, just PM me.
My name: Hexadecimal 22.

My format: Virus.

My destination: Mainframe. ReBoot! Vote please!!
Thehacker256
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Postby Thehacker256 » Mon Mar 22, 2004 9:24 pm

now your talkin'
I would think of a cool signature, but my titanic brain is too busy pondering more important things.
Darksun
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Postby Darksun » Mon Mar 22, 2004 9:46 pm

And when you're done, try figuring out my sig
User avatar
Starfyre
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Postby Starfyre » Mon Mar 22, 2004 10:57 pm

It's garbage (your sig).
Yay!
CrashWorship
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Postby CrashWorship » Mon Mar 22, 2004 11:48 pm

Searched for it on google, heh,...one typo and I end up at the OTOPENI airport of Bucharest.
Earth = 12.76 x 10+6 = 12,760,000 meters wide
(12.76 million meters)Plant Cell = 12.76 x 10-6 = 0.00001276 meters wide
(12.76 millionths of a meter)connections are everywhere if you just know where to look.
Stewsburntmonkey
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Postby Stewsburntmonkey » Tue Mar 23, 2004 12:03 am

I am just going to point out that if you do OTP properly it is uncrackable.  I am not saying you did it properly, but if you did. . .  Also to really crack stuff a much longer message is generally needed, also some other information may be needed.  Eitherway I fail to see the point, but I guess some people enjoy it.  :)
d0s
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Postby d0s » Tue Mar 23, 2004 7:34 am

Some text and a good encryption software is all you need to make a cryptogram. I have text, but if you're reading this, my software wasn't strong enough.


(Edited by d0s at 6:36 am on Mar. 23, 2004)
The internet is about as safe as a convenience store in East L.A. on Saturday night
Darkshine
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Postby Darkshine » Tue Mar 23, 2004 7:43 am

My father is a specialist in this sort of thing, and we both agree with Stews. Generally ANY code is crackable with enough text, even if it is simply switching one letter for another random letter, with no logic other than that, but this is a very short paragraph. And I can't be arsed.
Stewsburntmonkey
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Postby Stewsburntmonkey » Tue Mar 23, 2004 7:50 am

If it is OTP then you can say that it says anything less than or equal in bits than the encrypted string.  Since any bit can be XORed with at 1 or a 0, the result can be either a 1 or a 0, and since each bit is independant of all others (there is no pattern in general) all combinations of bits (for that length) are possible.  All cases are equally valid.  The intended meaning is only revealed when the key is given.  This is one of the interesting things about OTP.  However since OTP is a bit operation, and you gave a string I would assume this is not actually OTP.  :)
Hex22
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Postby Hex22 » Tue Mar 23, 2004 2:20 pm

The challenge has been solved, by d0s. the plaintext is:
"Some text and a good encryption software is all you need to make a cryptogram. I have text, but if you're reading this, my software wasn't strong enough. "
Good work, d0s! Just PM me, and we'll figure out the prize. Next challenge will be posted shortly.
My name: Hexadecimal 22.

My format: Virus.

My destination: Mainframe. ReBoot! Vote please!!
Darksun
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Postby Darksun » Tue Mar 23, 2004 3:42 pm

Quote: from Starfyre on 9:57 pm on Mar. 22, 2004[br]It's garbage (your sig).
Yay!


No, it says something, I just want to find out if it's crackable

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