{
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    "abstract": "This document describes opportunistic encryption (OE) as designed and implemented by the Linux FreeS/WAN project. OE uses the Internet Key Exchange (IKE) and IPsec protocols. The objective is to allow encryption for secure communication without any pre-arrangement specific to the pair of systems involved. DNS is used to distribute the public keys of each system involved. This is resistant to passive attacks. The use of DNS Security (DNSSEC) secures this system against active attackers as well. As a result, the administrative overhead is reduced from the square of the number of systems to a linear dependence, and it becomes possible to make secure communication the default even when the partner is not known in advance. This memo provides information for the Internet community.",
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      "confidence": "high",
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
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    "authors": [
      {
        "name": "Michael Richardson"
      },
      {
        "name": "Dr. D. Hugh Redelmeier"
      }
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      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
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    "docId": "RFC4322",
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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/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
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    "docLabel": "IETF RFC 4322",
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      "confidence": "high",
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      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
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    "docNumber": "4322",
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      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "docTitle": "Opportunistic Encryption using the Internet Key Exchange (IKE)",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "doi": "10.17487/RFC4322",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
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    "href": "https://doi.org/10.17487/RFC4322",
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      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
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    "keywords": [
      "Linux frees/wan",
      "IPSEC",
      "DNS",
      "DNSSEC"
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": [
        "Oe",
        "Linux frees/wan",
        "IPSEC",
        "DNS",
        "DNSSEC"
      ],
      "overridden": true,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T16:57:40.111Z",
      "version": "extractDocs.js@commit:30d92d8ed083"
    },
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    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "publicationDate": "2005-12-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "publisher": "IETF",
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      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
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        "RFC4025",
        "RFC791",
        "RFC1034",
        "RFC1464",
        "RFC1812",
        "RFC1984",
        "RFC2367",
        "RFC2538",
        "RFC2663",
        "RFC2671",
        "RFC3330",
        "RFC3445",
        "RFC3526",
        "RFC4033",
        "orphan/RFC4322/h:b84aa407"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=24 proseBlocks=27 skippedAnchorBlocks=25",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
        "updated": "2026-10-16T15:45:45.433Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "normative": [
        "RFC1035",
        "RFC2119",
        "RFC2401",
        "RFC2407",
        "RFC2408",
        "RFC2409",
        "RFC2535",
        "RFC3110"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
        "updated": "2026-10-16T15:45:45.433Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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    },
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
      "updated": "2026-10-16T15:45:45.433Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
        "updated": "2026-10-16T15:45:45.433Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "errataExist": true,
      "errataExist$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/rfc4322/",
        "updated": "2026-10-16T15:45:45.433Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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      "errataUrl": [
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        "https://www.rfc-editor.org/errata_search.php?rfc=4322",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc4322.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
        "updated": "2026-10-16T15:45:45.433Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
        "updated": "2026-10-16T15:45:45.433Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "statusNote": "Informational",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
        "updated": "2026-10-16T15:45:45.433Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4322/",
        "updated": "2026-10-16T15:45:45.433Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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