Cryptographic Keys and Decks of Cards

The previous post looked at the idea of storing a cryptographic key in the order of a deck of cards. A deck of 52 cards can store 225 bits of data because ⌊log2(52!)⌋ = 225. Here ⌊x⌋ is x rounded down to the nearest integer. If we want to store bigger keys, we re going to need [ ] The post Cryptographic Keys and Decks of Cards first appeared on John D. Cook .