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QbasicNews.Com => Challenges => Topic started by: Atom Ant on March 06, 2004, 09:20:35 AM



Title: Everyone's doing it so, what the heck: Decryption challenge
Post by: Atom Ant on March 06, 2004, 09:20:35 AM
:-P  I took a break from my other project to make an encryptor and a decryptor to go with it.  So, see if you can decrypt this:  http://www.geocities.com/atom_ant101/GOODLUCK.TXT

Have fun!  This is my first try at encryption, so it's probably easy to crack.


Title: Everyone's doing it so, what the heck: Decryption challenge
Post by: Atom Ant on March 06, 2004, 03:54:13 PM
Come on!  Almost 20 views and no replies.  At least tell me if it's strong or weak so I'll know whether or not to keep it.


Title: Everyone's doing it so, what the heck: Decryption challenge
Post by: Lanzaa on March 06, 2004, 08:21:10 PM
Quote
``I just came up with this neat method of encryption. Here's some
  ciphertext: FHDSIJOYW^&%$*#@OGBUJHKFSYUIRE. Is it strong?'' Without a
  doubt questions like this are the most annoying traffic on sci.crypt.

  If you have come up with an encryption scheme, providing some
  ciphertext from it is not adequate. Nobody has ever been impressed by
  random gibberish. Any new algorithm should be secure even if the
  opponent knows the full algorithm (including how any message key is
  distributed) and only the private key is kept secret. There are some
  systematic and unsystematic ways to take reasonably long ciphertexts
  and decrypt them even without prior knowledge of the algorithm, but
  this is a time-consuming and possibly fruitless exercise which most
  sci.crypt readers won't bother with.


Thats a quote on Net Etiquette for the google sci.crypt group


Title: Everyone's doing it so, what the heck: Decryption challenge
Post by: Atom Ant on March 06, 2004, 08:49:29 PM
This wasn't here to impress anyone, this was here as a challenge.  That's why I just gave random gibberish.  If I were here to impress someone then I would be the one decrypting them.


Title: Everyone's doing it so, what the heck: Decryption challenge
Post by: Lanzaa on March 06, 2004, 09:06:27 PM
Thats a direct quote so thats not my true way of thinking.

But you did just post a bunch of gibberish and you wanted to know how strong it is. I posted the quote to show you why this is just spam.

You can of course post the way the it encrypts and ask people how safe they think it is. Trying to decrypt a few lines of text with no other information is pointless.

Hence why no one posted.


Title: Everyone's doing it so, what the heck: Decryption challenge
Post by: PlayGGY on March 08, 2004, 05:30:22 PM
Most encryptions can just be brute-forced, anyways.


Title: decryption
Post by: MNDRBNDR on January 15, 2005, 12:00:18 PM
you know i have alot of time on my hands but i havent cracked your code yet but i definately see a pattern emerging between - and + numbers


Title: Everyone's doing it so, what the heck: Decryption challenge
Post by: Z!re on January 15, 2005, 12:42:12 PM
Like already stated.

It's unbreakable without having the source. And or encrypter without source.


The decrypted message you get from the string can be anything, you can come up with:
I am a hippo

Or:
The sun is shining

Or:
Eskomies live in cold places

Depending on how you decrypt it, you have no idea if you got the right one.

This is also how Julian encryptions work... giving you a different "valid" decrypted string depending on the password you give it. And you break it by checking for repetitions, which can be non-existant.


Title: Everyone's doing it so, what the heck: Decryption challenge
Post by: KiZ on January 16, 2005, 09:15:53 AM
OMG this is like 10 months old! LEAVE IT!