[Cryptography] Crypto and rustling
Joseph Kilcullen
kilcullenj at gmail.com
Sat Nov 19 11:21:00 EST 2016
If they are Friesian cattle then you can hire an artist to sketch
drawings of the patchwork black and white pattern of each cow. Kinda
like taking note of the brand that Mother Nature put on them. Its
cryptography in the sense that each cow’s pattern is a ‘Physical
unclonable function’. Once you take note of the pattern you simply
authenticate any given cow against a register of owners. Though that
sounds like a computer database which is not available in the 19th
century. I guess the local sheriff could use a copybook of drawings of
cattle?
To me, your question is about counterfeiting & authentication. The
solution presented is based on anti-counterfeiting solutions referenced
in some of my earlier posts.
More information about the cryptography
mailing list