[Tutor] Pythonify this code!

[ALAN GAULD]

Steganography's really neat!  You should look into it.
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I did a quick lookup on Wikipedia.

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Basically what his code does is takes an image, and it twiddles the least significant bits
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Interestingly when I was at university the head of signal processing was into 
crypto stuff and was looking for a student to do some work on cryptography 
based on images. He asked me because I had done some vacation work 
on DES and RSA but I wasn't really interested (too much heavy math!).

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I wonder if this is the kibnd of stuff he was working on...

>Alan G
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