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RFC 9909
Title: Internet X.509 Public Key Infrastructure
-- Algorithm Identifiers for the Stateless
Hash-Based Digital Signature Algorithm (SLH-DSA)
Author: K. Bashiri,
S. Fluhrer,
S. Gazdag,
D. Van Geest,
S. Kousidis
Status: Standards Track
Stream: IETF
Date: December 2025
Mailbox: [email protected],
[email protected],
[email protected],
[email protected],
[email protected]
Pages: 38
Updates/Obsoletes/SeeAlso: None
I-D Tag: draft-ietf-lamps-x509-slhdsa-09.txt
URL: https://www.rfc-editor.org/info/rfc9909
DOI: 10.17487/RFC9909
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.
This document is a product of the Limited Additional Mechanisms for PKIX and
SMIME Working Group of the IETF.
This is now a Proposed Standard.
STANDARDS TRACK: This document specifies an Internet Standards Track
protocol for the Internet community, and requests discussion and suggestions
for improvements. Please refer to the current edition of the Official
Internet Protocol Standards (https://www.rfc-editor.org/standards) for the
standardization state and status of this protocol. Distribution of this
memo is unlimited.
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