NIST Proposes to Update SP 800-56A and Revise SP 800-56C

In December 2024, NIST’s Crypto Publication Review Board initiated a review of the following Special Publications (SP):

In response, NIST received public comments.

NIST proposes to:

  • update SP 800-56Ar3
  • reaffirm SP 800-56Br2
  • revise SP 800-56Cr2

Submit comments on this decision by September 15, 2025 to cryptopubreviewboard@nist.gov with “Comments on SP 800-56 Decision Proposal” in the subject line. Comments received in response to this request will be posted on the Crypto Publication Review Project site after the due date. Submitters’ names and affiliations (when provided) will be included, while contact information will be removed. See the project site for additional information about the review process. 

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