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Cryptography Challenge #2!
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by
on 2005-09-19 20:38:38 (edited 2010-09-13 18:21:44)
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This thread is for discussion of the Gendou.com Cryptography Challenge #2. Click the above link to view the challenge, get hints, and see the scoreboard. Please do NOT post spoilers! You may post your ideas and strategies, but no actual answers, ciphers, or code. 
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Re: Cryptography Challenge #2!
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by AnimePhenie
on 2005-09-20 10:23:10
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lol, cool program :P I got the REALLY long message... still not too sure what its about though.... lol |
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Re: Cryptography Challenge #2!
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by
on 2005-09-20 10:58:05 (edited 2005-09-20 10:58:36)
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if you got the message, then good job! look it up on google if you wanna know what its from.
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Re: Cryptography Challenge #2!
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by クリッム^__^
on 2005-09-20 23:45:13
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Confusion.... @_<
ã?°ã?‹! ^_^
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Re: Cryptography Challenge #2!
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| I got the message and all and looked it up on google... I found out a bunch of stuff, but I don't know which part is important! >< The message encoder/decoder thingy is awesome. |
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Re: Cryptography Challenge #2!
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by Cardcaptor Raa'Shaun
on 2005-09-21 12:46:44
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This encoder/decoder program is cool I did see the difference between the original and the encoded image in a hex-editor but it wasn't anything 'human-readable'. I still want to figure out how this one works ^_^
From the new master of the cards, have a wonderful anime filled day ^_^
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Re: Cryptography Challenge #2!
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by
on 2005-09-21 13:10:58 (edited 2005-09-21 13:12:02)
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Its binary. Every character in the encoded message is represented by 8 bits (or binary digits). reading from left to right, top to bottom, each pixel in the image corresponds to these bits, hi to lo, character by character. if the bit is a 1, the pixel is tinted red by the smallest possible amount. if the bit is a 0, the pixel is left alone. the result is an altercation of the image that is invisible to the naked eye. however, you can clearly see the binary pattern if you open the .bmp in photoshop and use the magic wand tool to select all pure white pixels. the red-tinted pixels will be missing from your selection, forming a scattered pattern. what makes this system of cryptography interesting is that is is, in effect, a "public key" encryption method. this is because the cypher, in this case the google image, is "known" by everyone. pretty cool huh?
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Re: Cryptography Challenge #2!
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| ummm.. question... how can i use the program? ... sob... |
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Re: Cryptography Challenge #2!
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| how do u load that pic into the coder thingy |
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Re: Cryptography Challenge #2!
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What is exactly what we are searching for? because i've got the looooooooooong message, and im investigating were is that from... so, the answer you expect is....? title? web page? other thing?
n_n
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Re: Cryptography Challenge #2!
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by
on 2005-09-22 14:05:31 (edited 2010-09-09 18:21:15)
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the text is from William Gibson's novel "Neuromancer".
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