python-hkdf: python-hkdf (Implementation of the HMAC Key Derivation function) python-hkdf: python-hkdf: This module implements the HMAC Key Derivation function, defined at python-hkdf: http://tools.ietf.org/html/draft-krawczyk-hkdf-01 python-hkdf: python-hkdf: python-hkdf: python-hkdf: python-hkdf: python-hkdf: python-hkdf: