Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.


The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

NIST Releases Draft SP 800-56B Rev 2 for Public Comment

NIST seeks comments on Draft Special Publication (SP) 800-56B Revision 2, Recommendation for Pair-Wise Key-Establishment Using Integer Factorization Cryptography. This draft publication specifies key agreement and key transport schemes for pairs of entities, and methods for key confirmation are included to provide assurance that both parties share the same keying material. Significant changes to the document are listed in "Notes to Reviewers." A more detailed list of changes is provided in the final appendix. NIST requests comments by Friday, October 5, 2018. Please send comments to, with "Comments on Draft SP 800-56B Rev. 2" in the subject line.

Released July 10, 2018, Updated December 11, 2018