{
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    "abstract": "The Public-Key Infrastructure using X.509 (PKIX) Working Group of the Internet Engineering Task Force (IETF) has defined a number of certificate management protocols. These protocols are primarily focused on X.509v3 public-key certificates. However, it is sometimes desirable to manage certificates in alternative formats as well. This document specifies how such certificates may be requested using the Certificate Request Message Format (CRMF) syntax that is used by several different protocols. It also explains how alternative certificate formats may be incorporated into such popular protocols as PKIX Certificate Management Protocol (PKIX-CMP) and Certificate Management Messages over CMS (CMC). This memo provides information for the Internet community.",
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    "authors": [
      {
        "name": "Mikhail Blinov"
      },
      {
        "name": "Dr. Carlisle Adams"
      }
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      "confidence": "high",
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      "confidence": "high",
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      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
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      "updated": "2026-10-16T15:45:23.932Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
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    "docTitle": "Alternative Certificate Formats for the Public-Key Infrastructure Using X.509 (PKIX) Certificate Management Protocols",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
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      "updated": "2026-10-16T15:45:23.932Z",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
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      "source": "parsed",
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      "updated": "2026-10-16T15:45:23.932Z",
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    },
    "doi": "10.17487/RFC4212",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
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      "source": "resolved",
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      "updated": "2026-10-16T15:45:23.932Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
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    "href": "https://doi.org/10.17487/RFC4212",
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      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
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      "updated": "2026-10-16T15:45:23.932Z",
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      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
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        "Pkix Certificate Management Protocol",
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        "Certificate Management Messages Over Cms",
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      "source": "parsed",
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      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
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      "source": "parsed",
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    "publicationDate": "2005-10-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4212/",
      "updated": "2026-10-16T15:45:23.932Z",
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      "confidence": "high",
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      "source": "parsed",
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      "updated": "2026-10-16T15:45:23.932Z",
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        "RFC3281",
        "RFC2797",
        "RFC3852",
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        "RFC2440",
        "RFC2119"
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        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
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        "source": "parsed",
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    "resolvedHref": "https://www.rfc-editor.org/info/rfc4212/",
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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/rfc4212/",
      "updated": "2026-10-16T15:45:23.932Z",
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4212/",
        "updated": "2026-10-16T15:45:23.932Z",
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        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
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        "updated": "2026-10-16T15:45:23.932Z",
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      "errataUrl": [
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        "https://www.rfc-editor.org/errata_search.php?rfc=4212",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc4212.html"
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      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
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        "sourceUrl": "https://www.rfc-editor.org/info/rfc4212/",
        "updated": "2026-10-16T15:45:23.932Z",
        "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/rfc4212/",
        "updated": "2026-10-16T15:45:23.932Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
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        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4212/",
        "updated": "2026-10-16T15:45:23.932Z",
        "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/rfc4212/",
        "updated": "2026-10-16T15:45:23.932Z",
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