Source: wikibot/hkdf
= HKDF
{wiki=HKDF}
HKDF, or HMAC-based Key Derivation Function, is a key derivation function that is based on HMAC (Hash-based Message Authentication Code). It is designed to be used to derive cryptographic keys or pseudorandom keys from a given input keying material. HKDF is defined in RFC 5869 and is notable for its robustness and simplicity.