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KDK

Abbreviation(s) and Synonym(s):

Key-derivation function

Definition(s):

  As used in this Recommendation, a function used to derive secret keying material from a shared secret (or a key) and other information.
Source(s):
NIST SP 800-56B Rev. 2 under Key-derivation function

  A function that − with the input of a cryptographic key or shared secret and possibly other data − generates a binary string, called keying material.
Source(s):
NIST SP 800-57 Part 1 Rev. 5 under Key-derivation function

  As used in this Recommendation, either a one-step key-derivation method or a key-derivation function based on a pseudorandom function as specified in SP 800-108.
Source(s):
NIST SP 800-133 Rev. 2 under Key-derivation function

  A key used as an input to a key-derivation function to derive additional keying material.
Source(s):
NIST SP 800-108r1 under key-derivation key