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Fediverse user retr0id creates an image that contains its own MD5 within a PNG (hashquine)

https://rdrama.cc/notice/ANqlviR2K2ZKO7FeWe

Might be the coolest shit I've seen all day, holy frick.

Tested and confirmed, who would lie on the internet anyway?

![](/images/16640836129304848.webp)

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I just spent several minutes trying and realized it made no sense you might need neurodivergency. Trying again.

Basically there's mathematical functions called "hash functions" that slice and chop up data to make a number called the "hash" of the data. This guy managed to make a png that displays a number and when the png is hashed the output hash value is that number. You're not supposed to be able to figure out tricks to get things like this through the slicing and chopping process but this is with a boomer hash function called MD5 that turbo neurodivergent computer security people found all sorts of problems with.

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No because I have no idea really..

Think it was simple reverse engineering at the root though, undo the math and then through in a bunch of values, run a script for several hours which tries to get the result you need

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