Visual cryptography for physical keyrings

hackaday.com

50 points·prostoalex··7 comments

Holy crap! I love this. I was trying to explain to my partner that NordVPN let us know that our password_hashes from our college login were leaked.

She's not into technical stuff, but we both enjoy simple, human ways to explain those types of things, instead of talking public private keys, or hashes and salts haha

I created a python script to generate such 'encryptions':

https://github.com/AlessioM/encrypt_3d

Best Friends charms for nerds.

Someone with a CNC router or a laser cutter and a Python script or something could probably make some cash by selling these on Etsy.

This is fun :). Shouldn't such a thing be called steganography instead of cryptography?

I think steganography would imply some message was hiding in plain sight in one share. However this is a classic example of a secret sharing scheme, having one share is provably useless. Except here it works in a nice visual way rather than e.g. the more traditional polynomials.

This is really neat I would pay for something like this.

Thanks :) I put the code here - https://github.com/anfractuosity/cryptokeyring you can specify the image to encode along with a key should you wish. It makes use of freecad's python api.

And generates .dxf files which you can give to a laser cutting service. I tried to make sure the dots weren't too close to avoid issues with cutting.

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