It represents randomness(entropy) in the firmware file. And "known" file types f... | Hacker News

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		callesgg on Feb 2, 2014 \| parent \| context \| favorite \| on: Reversing the WRT120N’s Firmware Obfuscation It represents randomness(entropy) in the firmware file. And "known" file types found in the firmware file. It is very useful. As different file types and data structures. Often has a quite common entropy level to them. Rather than doing it in your head as you do one can use a machine to help, which happens to be the hole point of machines.

userbinator on Feb 2, 2014 [–]

I'm talking about the animated one in the parent - AFAIK entropy is a scalar, not three-dimensional.

callesgg on Feb 2, 2014 | [–]

Oh the animated one, yeah you are correct that is not entropy at all.

It is just bytes visually represented. 1byte = x axis, 2byte = y axis, 3byte = z axis. And then jump forward and repeat.

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