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RFC 9909: Internet X.509 Public Key Infrastructure -- Algorithm Identifiers for the Stateless Hash-Based Digital Signature Algorithm (SLH-DSA)

In plain English — editorial summary, not part of the RFC

Digital signatures are used within the X.509 Public Key Infrastructure, such as X.509 certificates and Certificate Revocation Lists (CRLs), as well as to sign messages. This document specifies the conventions for using the Stateless Hash-Based Digital Signature Algorithm (SLH-DSA) in the X.509 Public Key Infrastructure. The conventions for the associated signatures, subject public keys, and private keys are also specified.

Document record

Document ID
RFC9909
Published
December 2025
Authors
K. Bashiri; S. Fluhrer; S. Gazdag; D. Van Geest; S. Kousidis
Status
PROPOSED STANDARD
Stream
IETF
Area
sec
Pages
38
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The document record above — title, authors, date, status, stream, area, relationships, DOI and errata — is imported verbatim from the public RFC Editor index. The “in plain English” section is editorial: written by The metasystema editorial team, not part of the RFC. Where the two differ, the RFC text governs.

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canonical URL: /rfc/9909-internet-x-509-public-key-infrastructure-algorithm-identifiers-for-the-stateless