How We Generate Encryption Keys From Pass Phrases

Humans like words, and computers like binary, so we need to find ways where we can generate encryption keys that we can remember. One method is to use a Key Derivation Function (KDF).

One method is HKDF, and which is a HMAC method for key derivation. Initially HKDF creates a pseudorandom key (PRK) using a pass phrase and a salt value (and any other random functions which are…