SP 800-227 is published

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dustin...@nist.gov

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Sep 18, 2025, 10:56:39 AM (4 days ago) Sep 18
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All,

NIST has published the final version of Special Publication (SP) 800-227, Recommendations for Key-Encapsulation Mechanisms. A key-encapsulation mechanism (KEM) is a set of algorithms that can be used by two parties under certain conditions to securely establish a shared secret key over a public channel. This publication describes the basic definitions, properties, and applications of KEMs and provides recommendations for implementing and using KEMs securely.

NIST greatly appreciates all the feedback and discussion and has incorporated several updates to SP 800-227 based on the comments received. The public comment period on the initial public draft (IPD) was open through March 7, 2025, and the feedback received is now linked from the SP 800-227 publication details. NIST also held a virtual Workshop on Guidance for KEMs on February 25-26, 2025, to gather additional input on SP 800-227. Presentations and the recording of the workshop are available on the event web page.


Dustin Moody

NIST PQC

[And a reminder that the 6th NIST PQC Standardization Conference is next week]

niux_d...@icloud.com

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Sep 19, 2025, 9:05:34 AM (3 days ago) Sep 19
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Typo at the Appendix A List of Acronyms:

ML-KEM is Module-Lattice Key Encapsulation Mechanism, not Modular-Lattice-....

I too made that mistake, but the lattice is based on 'Module', which is an algebraic structure.

Hope this can be a "last-minute".

Thanks.

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