3 ms·
Can someone explain what the desired features of a "hand cipher" are?
by j2kun 10y ago
Can someone explain what the desired features of a "hand cipher" are?
- brohee 10y agoWell, I would say : - practical (using a manageable amount of paper, and/or common items like a chess board, playing cards or dominoes...) - fast enough (encrypt say at least one word per minute, pretty sure manual RC4 doesn't qualify here) - secure against an adversary using computing ressources - provides a way to easily store a strong key, a shuffled deck is pretty good at this
- pavel_lishin 10y agoI'd add "plausibly deniable" as well - requiring either party to have a copy of "The Lil' Saboteur's Guide To Field Encryption" is probably bad for espionage.