Announcement of Proposal to Convert FIPS 198-1, “The Keyed-Hash Message Authentication Code (HMAC),” to a NIST Special Publication

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Source: istock
Source: istock

October 4, 2022 | Originally published by NIST on September 20, 2022

As a part of the periodic review of NIST’s cryptographic standards and guidelines, NIST’s Crypto Publication Review Board announced the review of FIPS 198-1 The Keyed-Hash Message Authentication Code (HMAC) in August 2021. In response, NIST received public comments.

NIST proposes to convert FIPS 198-1 to a NIST Special Publication (SP) and apply the following changes:

  • Update the HMAC specification to include block sizes for the SHA-3 family of hash functions
  • Include a discussion on truncation
  • Improve the editorial quality and update references
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