Reply To: Sunday Puzzle thread
14/12 puzzle:
Assuming they have plenty of keys and padlocks, Boris puts the ring in a box and locks it. He then puts that box inside another locked box, and repeats until the parcel is heavy enough to be an absolute pain to steal or open quickly, but still small enough for the postal service of Kleptopia to deliver. The ring arrives safely by default. If an attacker is sufficiently confused, exhausted, or emotionally compromised, hopefully the system is pretty secure.
Or… if Boris prefers mathematics to cardboard, he could also use public-key cryptography to avoid ever sending a secret key at all.
(Bit of an etymology aside- “Kleptopia” combines Greek ‘kleptein’ (to steal) with -topia, meaning land/place)
Looking forward to the Christmas Miscellany!