{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.1.0",
  "lastModified": "2026-10-14T15:56:38.002Z",
  "sourcePath": "src/main/data/docs",
  "docId": "RFC5925",
  "document": {
    "abstract": "This document specifies the TCP Authentication Option (TCP-AO), which obsoletes the TCP MD5 Signature option of RFC 2385 (TCP MD5). TCP-AO specifies the use of stronger Message Authentication Codes (MACs), protects against replays even for long-lived TCP connections, and provides more details on the association of security with TCP connections than TCP MD5. TCP-AO is compatible with either a static Master Key Tuple (MKT) configuration or an external, out-of-band MKT management mechanism; in either case, TCP-AO also protects connections when using the same MKT across repeated instances of a connection, using traffic keys derived from the MKT, and coordinates MKT changes between endpoints. The result is intended to support current infrastructure uses of TCP MD5, such as to protect long-lived connections (as used, e.g., in BGP and LDP), and to support a larger set of MACs with minimal other system and operational changes. TCP-AO uses a different option identifier than TCP MD5, even though TCP-AO and TCP MD5 are never permitted to be used simultaneously. TCP-AO supports IPv6, and is fully compatible with the proposed requirements for the replacement of TCP MD5. [STANDARDS-TRACK]",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "authors": [
      {
        "name": "Dr. Joseph D. Touch"
      },
      {
        "name": "Allison J. Mankin"
      },
      {
        "name": "Ron Bonica"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docId": "RFC5925",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docLabel": "IETF RFC 5925",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docNumber": "5925",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docTitle": "The TCP Authentication Option",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "doi": "10.17487/RFC5925",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "href": "https://doi.org/10.17487/RFC5925",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "keywords": [
      "TCP",
      "BGP",
      "Digest",
      "Algorithm"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "TCP",
        "BGP",
        "Transmission Control Message",
        "Digest",
        "Algorithm"
      ],
      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-14T15:56:38.002Z",
      "version": "extractDocs.js@commit:ca62cd19765f"
    },
    "pages": "48",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publicationDate": "2010-06-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "references": {
      "bibliographic": [
        "RFC1321",
        "RFC1323",
        "RFC1948",
        "RFC2104",
        "RFC2663",
        "RFC3234",
        "RFC3562",
        "RFC3947",
        "RFC4301",
        "RFC4808",
        "RFC4953",
        "RFC5246",
        "orphan/RFC5925/h:30819e7f",
        "orphan/RFC5925/h:c908ebe6",
        "orphan/RFC5925/h:ddcc78db",
        "orphan/RFC5925/h:df593ef8",
        "orphan/RFC5925/h:a2d187dd",
        "orphan/RFC5925/h:fd83ca34",
        "orphan/RFC5925/h:b9c49b73",
        "orphan/RFC5925/h:940fcb20",
        "orphan/RFC5925/h:ded22fa4",
        "orphan/RFC5925/h:fc2e0cb6",
        "orphan/RFC5925/h:7dbd14d1",
        "orphan/RFC5925/h:c4f1abc3",
        "orphan/RFC5925/h:f9f36ef1"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=39 proseBlocks=44 skippedAnchorBlocks=42",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "normative": [
        "RFC793",
        "RFC1122",
        "RFC2018",
        "RFC2119",
        "RFC2385",
        "RFC2403",
        "RFC2460",
        "RFC2883",
        "RFC3517",
        "RFC4306",
        "RFC4724",
        "RFC4271",
        "RFC4781",
        "RFC5926"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc5925/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
      "updated": "2026-10-13T22:25:25.642Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "status": {
      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc5925",
        "https://www.rfc-editor.org/errata_search.php?rfc=5925",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc5925.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "supersedes": [
        "RFC2385"
      ],
      "supersedes$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc5925/",
        "updated": "2026-10-13T22:25:25.642Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      }
    }
  }
}