{
  "draft": "draft-ietf-lamps-automation-keyusages-08",
  "doc_id": "RFC9809",
  "title": "X.509 Certificate Extended Key Usage (EKU) for Configuration, Updates, and Safety-Critical Communication",
  "authors": [
    "H. Brockhaus",
    "D. Goltzsche"
  ],
  "format": [
    "XML",
    "TEXT",
    "HTML",
    "PDF"
  ],
  "page_count": "12",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "Limited Additional Mechanisms for PKIX and SMIME",
  "abstract": "RFC 5280 defines the Extended Key Usage (EKU) extension and specifies several extended key purpose identifiers (KeyPurposeIds) for use with that extension in X.509 certificates.  This document defines KeyPurposeIds for general-purpose and trust anchor configuration files, for software and firmware update packages, and for safety-critical communication to be included in the EKU extension of X.509 v3 public key certificates.",
  "pub_date": "July 2025",
  "keywords": [
    "Industrial Automation",
    "ERJU",
    "extended key usage",
    "extension",
    "PKI"
  ],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [],
  "see_also": [],
  "doi": "10.17487/RFC9809",
  "errata_url": null
}