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Hiding in plain sight
#1

Just read this interesting article about steganography, or the technique of concealing encrypted or hidden messages without drawing attention to the medium itself. In this context, this programmer hides an entire audio file of a pop song in a innocuous looking image.

[Image: 9bEZg.png]

Quote:The basic idea is that you can take the lower, less significant bits of the color values, discard them, and then replace them with arbitrary data.... I took the most significant 5 bits of red, 6 of green, and 5 of blue, and kept them in tact. Then the lower bits of each of these RGB triplets would form 8 bits (The 3 remaining bits from red + 2 from green + 3 from blue), or one byte from the audio file. This meant a pretty easy and direct mapping so the math and decoding was straight forward.

http://qaa.ath.cx/PiggyPack.html

Next time you see an image on the internet ... you never know - it could have a hidden message! Big Grin
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#2

So ow do you hear this?

Nikon D3100 with Tokina 28-70mm f3.5, (I like to use a Vivitar .43x aux on the 28-70mm Tokina), Nikkor 10.5 mm fisheye, Quanteray 70-300mm f4.5, ProOptic 500 mm f6.3 mirror lens. http://donschaefferphoto.blogspot.com/
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#3

In the article the author gives some code / commands which you are supposed to run on a Linux system - it calls mplayer which plays the file.

I would like to hear it too but alas, I'm not enough of a geek Smile
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