the.com/encryption key
The only password that doesn't care if you forget it, because math remembers for you.
means A piece of data used by a cryptographic algorithm to lock (encrypt) or unlock (decrypt) information.
from 'Key' has meant 'means of access or explanation' since Old English (cæg), long before locks got digital — think 'key to a mystery' or 'key to a code.' Cryptographers borrowed the metaphor directly: a physical key opens a physical lock, and a cryptographic key opens a mathematical one. 'Encryption' itself comes from Greek kryptos, 'hidden,' via 'crypt,' the hidden chamber under a church — so the phrase literally means 'the thing that opens what was made hidden.'
- actual nature
- just a very large, very random number
- length matters
- 256 bits stronger than 128, not twice
- lose it
- your data becomes permanent abstract art
- public vs private
- one locks, only the other unlocks