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NIST.SP.800-108r1 Recommendation for Key Derivation Using Pseudorandom Functions

  • 1.  NIST.SP.800-108r1 Recommendation for Key Derivation Using Pseudorandom Functions

    Posted Aug 17, 2022 01:01:00 PM
    Hi All,

    NIST released Special Publication (SP) 800-108r1, Recommendation for Key Derivation Using Pseudorandom Functions. This publication specifies techniques for deriving additional keying material from a secret cryptographic key using pseudorandom functions. The key-derivation functions specified in the original edition of SP 800-108 (2008) used the Keyed-hash Message Authentication Code (HMAC) and Cipher-based MAC (CMAC) as pseudorandom functions.

    This revision adds a Keccak-based MAC (KMAC) key-derivation function. It also discusses key-control issues when using CMAC as a pseudorandom function and methods to prevent a single party from controlling the derived key block.

    @Paul Rich



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    Michael Roza CPA, CISA, CIA, MBA, Exec MBA
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