{"draft":"draft-ietf-lamps-x509-slhdsa-09","doc_id":"RFC9909","title":"Internet X.509 Public Key Infrastructure -- Algorithm Identifiers for the Stateless Hash-Based Digital Signature Algorithm (SLH-DSA)","authors":["K. Bashiri","S. Fluhrer","S. Gazdag","D. Van Geest","S. Kousidis"],"format":["HTML","TEXT","PDF","XML"],"page_count":"38","pub_status":"PROPOSED STANDARD","status":"PROPOSED STANDARD","source":"Limited Additional Mechanisms for PKIX and SMIME","abstract":"Digital signatures are used within the X.509 Public Key\r\nInfrastructure, such as X.509 certificates and Certificate Revocation\r\nLists (CRLs), as well as to sign messages.  This document specifies\r\nthe conventions for using the Stateless Hash-Based Digital Signature\r\nAlgorithm (SLH-DSA) in the X.509 Public Key Infrastructure.  The\r\nconventions for the associated signatures, subject public keys, and\r\nprivate keys are also specified.","pub_date":"December 2025","keywords":["SLH-DSA","SPHINCS+","PQ Signatures","post-quantum X.509"],"obsoletes":[],"obsoleted_by":[],"updates":[],"updated_by":[],"see_also":[],"doi":"10.17487\/RFC9909","errata_url":null}