I must be missing something here, there are 25 unique dice that can be permuted, each can have six potential sides showing, and 4 potential orientations of the displayed face... So (25!)×(25×6×4) ? Isn't that more like only 93 bits?
Well obviously harder to scan from a phone, I think a deck of playing cards would be easier to acquire and store. Shuffling 27 would give you 93 bits, shuffling the full 52 would be ~226.
Never mind, with the benefit if sleep I see an error in my math.
Still, I wonder if a similar thing could be done by shuffling a deck of cards, and then riffling the results past a good camera so that an app can recognize the sequence in order. Perhaps it would be vulnerable to common shuffling mistakes?
Yeah, this explains why this cryptography paper was published in a ML conference. Any reasonable reviewer would reject this as not providing sufficient security.
It's pretty upfront about being a novelty project done by a self-described non-crypto expert, and I don't see any assertions of it guaranteeing any degree of sufficiency/security or claiming any such NextBigThing(TM) hype.
Just because a paper is published doesn't mean it wasn't done for fun/the hell of it.
I must be missing something here, there are 25 unique dice that can be permuted, each can have six potential sides showing, and 4 potential orientations of the displayed face... So (25!)×(25×6×4) ? Isn't that more like only 93 bits?
Well obviously harder to scan from a phone, I think a deck of playing cards would be easier to acquire and store. Shuffling 27 would give you 93 bits, shuffling the full 52 would be ~226.