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Key-derivation function

Abbreviations / Acronyms / Synonyms:

Definitions:

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

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

  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.
Sources:
NIST SP 800-133 Rev. 2

  A function that, with the input of a cryptographic key and other data, generates a bit string called the keying material, as defined in this Recommendation.
Sources:
NIST SP 800-108r1 [August 2022 (Includes updates as of 02-02-2024)] 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].
Sources:
NIST SP 800-56C Rev. 2