{
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    "abstract": "The required and suggested algorithms in the original Internet Key Exchange version 1 (IKEv1) specification do not reflect the current reality of the IPsec market requirements. The original specification allows weak security and suggests algorithms that are thinly implemented. This document updates RFC 2409, the original specification, and is intended for all IKEv1 implementations deployed today. [STANDARDS-TRACK]",
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      {
        "name": "Paul E. Hoffman"
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      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
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      "updated": "2026-10-13T22:23:07.983Z",
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    "docId": "RFC4109",
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      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
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    "docLabel": "IETF RFC 4109",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docNumber": "4109",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "docTitle": "Algorithms for Internet Key Exchange version 1 (IKEv1)",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "docType": "Standard",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "doi": "10.17487/RFC4109",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "href": "https://doi.org/10.17487/RFC4109",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "keywords": [
      "IKE",
      "IPSEC",
      "Oakley",
      "Authentication",
      "ISAKMP",
      "Internet Security Key Management"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publicationDate": "2005-05-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publisher": "IETF",
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      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
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      "normative": [
        "RFC2119",
        "RFC2409",
        "RFC3526",
        "RFC3566",
        "RFC3602",
        "RFC3664"
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      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
        "updated": "2026-10-13T22:23:07.983Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc4109/",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
      "updated": "2026-10-13T22:23:07.983Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
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      "active": true,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
        "updated": "2026-10-13T22:23:07.983Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
        "updated": "2026-10-13T22:23:07.983Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "errataExist": false,
      "errataExist$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/rfc4109/",
        "updated": "2026-10-13T22:23:07.983Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
        "updated": "2026-10-13T22:23:07.983Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
        "updated": "2026-10-13T22:23:07.983Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4109/",
        "updated": "2026-10-13T22:23:07.983Z",
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}