{
  "draft": "draft-ietf-cose-tsa-tst-header-parameter-08",
  "doc_id": "RFC9921",
  "title": "CBOR Object Signing and Encryption (COSE) Header Parameter for Timestamp Tokens as Defined in RFC 3161",
  "authors": [
    "H. Birkholz",
    "T. Fossati",
    "M. Riechert"
  ],
  "format": [
    "XML",
    "TEXT",
    "HTML",
    "PDF"
  ],
  "page_count": "21",
  "pub_status": "PROPOSED STANDARD",
  "status": "PROPOSED STANDARD",
  "source": "CBOR Object Signing and Encryption",
  "abstract": "This document defines two CBOR Object Signing and Encryption (COSE) header parameters for incorporating timestamping based on RFC 3161 into COSE message structures (COSE_Sign and COSE_Sign1).  This enables the use of established timestamping infrastructure per RFC 3161 in COSE-based protocols.",
  "pub_date": "February 2026",
  "keywords": [],
  "obsoletes": [],
  "obsoleted_by": [],
  "updates": [],
  "updated_by": [],
  "see_also": [],
  "doi": "10.17487/RFC9921",
  "errata_url": null
}