{
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  "docId": "RFC3567",
  "document": {
    "abstract": "This document describes the authentication of Intermediate System to Intermediate System (IS-IS) Protocol Data Units (PDUs) using the Hashed Message Authentication Codes - Message Digest 5 (HMAC-MD5) algorithm as found in RFC 2104. IS-IS is specified in International Standards Organization (ISO) 10589, with extensions to support Internet Protocol version 4 (IPv4) described in RFC 1195. The base specification includes an authentication mechanism that allows for multiple authentication algorithms. The base specification only specifies the algorithm for cleartext passwords. This document proposes an extension to that specification that allows the use of the HMAC-MD5 authentication algorithm to be used in conjunction with the existing authentication mechanisms. This memo provides information for the Internet community.",
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      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "authors": [
      {
        "name": "Tony Li"
      },
      {
        "name": "Ran Atkinson"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docId": "RFC3567",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docLabel": "IETF RFC 3567",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docNumber": "3567",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docTitle": "Intermediate System to Intermediate System (IS-IS) Cryptographic Authentication",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "docType": "Informational",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "doi": "10.17487/RFC3567",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "href": "https://doi.org/10.17487/RFC3567",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "keywords": [
      "ISO"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "pages": "6",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publicationDate": "2003-07-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "references": {
      "bibliographic": [
        "RFC1195",
        "RFC2154",
        "orphan/RFC3567/h:ce901a90"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=5 proseBlocks=7 skippedAnchorBlocks=5",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
        "updated": "2026-10-14T18:49:59.166Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "normative": [
        "ISO.10589.2002",
        "RFC2104"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
        "updated": "2026-10-14T18:49:59.166Z",
        "version": "extractDocs.js@commit:673dd514c094"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc3567/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
      "updated": "2026-10-14T18:49:59.166Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "status": {
      "active": false,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
        "updated": "2026-10-14T18:49:59.166Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
        "updated": "2026-10-14T18:49:59.166Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "latestVersion": false,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
        "updated": "2026-10-14T18:49:59.166Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "statusNote": "Informational",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
        "updated": "2026-10-14T18:49:59.166Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "superseded": true,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
        "updated": "2026-10-14T18:49:59.166Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "supersededBy": [
        "RFC5304"
      ],
      "supersededBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc3567/",
        "updated": "2026-10-14T18:49:59.166Z",
        "version": "extractDocs.js@commit:673dd514c094"
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}