{
  "draft": "draft-ietf-lamps-rfc5019bis-12",
  "doc_id": "RFC9919",
  "title": "The Lightweight Online Certificate Status Protocol (OCSP) Profile for High-Volume Environments",
  "authors": [
    "T. Ito",
    "C. Wilson",
    "C. Bonnell",
    "S. Turner"
  ],
  "format": [
    "XML",
    "TEXT",
    "HTML",
    "PDF"
  ],
  "page_count": "32",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "Limited Additional Mechanisms for PKIX and SMIME",
  "abstract": "This specification defines a profile of the Online Certificate Status\r\n   Protocol (OCSP) that addresses the scalability issues inherent when\r\n   using OCSP in large scale (high volume) Public Key Infrastructure\r\n   (PKI) environments and/or in PKI environments that require a\r\n   lightweight solution to minimize communication bandwidth and client-\r\n   side processing.\r\n\r\n   This specification obsoletes RFC 5019.  The profile specified in RFC\r\n   5019 has been updated to allow and recommend the use of SHA-256 over\r\n   SHA-1.",
  "pub_date": "July 2026",
  "keywords": [
    "Revocation"
  ],
  "obsoletes": [
    "RFC5019"
  ],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [],
  "see_also": [],
  "doi": "10.17487/RFC9919",
  "errata_url": null
}