{
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    "abstract": "This RFC is the Outgrowth of a series of IAB Privacy Task Force meetings and of internal working papers distributed for those meetings. This memo defines message encipherment and authentication procedures, as the initial phase of an effort to provide privacy enhancement services for electronic mail transfer in the Internet. Detailed key management mechanisms to support these procedures will be defined in a subsequent RFC. As a goal of this initial phase, it is intended that the procedures defined here be compatible with a wide range of key management approaches, including both conventional (symmetric) and public-key (asymmetric) approaches for encryption of data encrypting keys. Use of conventional cryptography for message text encryption and/or integrity check computation is anticipated.",
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    "authors": [
      {
        "name": "J. Linn"
      }
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      "confidence": "high",
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      "confidence": "high",
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      "updated": "2026-10-14T18:49:05.364Z",
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    "docLabel": "IETF RFC 1040",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
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    "docNumber": "1040",
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      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
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      "updated": "2026-10-14T18:49:05.364Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docTitle": "Privacy enhancement for Internet electronic mail: Part I: Message encipherment and authentication procedures",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
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      "updated": "2026-10-14T18:49:05.364Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "docType": "Specification",
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      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
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      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
      "updated": "2026-10-14T18:49:05.364Z",
      "version": "extractDocs.js@commit:673dd514c094"
    },
    "doi": "10.17487/RFC1040",
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      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
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      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
      "updated": "2026-10-14T18:49:05.364Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "href": "https://doi.org/10.17487/RFC1040",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
      "updated": "2026-10-14T18:49:05.364Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "pages": "29",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
      "updated": "2026-10-14T18:49:05.364Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "publicationDate": "1988-01-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
      "updated": "2026-10-14T18:49:05.364Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
      "updated": "2026-10-14T18:49:05.364Z",
      "version": "extractDocs.js@commit:673dd514c094"
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    "references": {
      "bibliographic": [
        "ISO.7498",
        "NIST.FIPS.46",
        "NIST.FIPS.81",
        "NIST.FIPS.113",
        "RFC821",
        "RFC822",
        "RFC934",
        "RFC987"
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        "confidence": "high",
        "note": "Parsed from RFC HTML references/informative sections",
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        "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
        "updated": "2026-10-14T18:49:05.364Z",
        "version": "extractDocs.js@commit:673dd514c094"
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    "resolvedHref": "https://www.rfc-editor.org/info/rfc1040/",
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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/rfc1040/",
      "updated": "2026-10-14T18:49:05.364Z",
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
        "updated": "2026-10-14T18:49:05.364Z",
        "version": "extractDocs.js@commit:673dd514c094"
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      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
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        "source": "parsed",
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        "updated": "2026-10-14T18:49:05.364Z",
        "version": "extractDocs.js@commit:673dd514c094"
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      "latestVersion": false,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
        "updated": "2026-10-14T18:49:05.364Z",
        "version": "extractDocs.js@commit:673dd514c094"
      },
      "statusNote": "Unknown",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
        "updated": "2026-10-14T18:49:05.364Z",
        "version": "extractDocs.js@commit:673dd514c094"
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      "superseded": true,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
        "updated": "2026-10-14T18:49:05.364Z",
        "version": "extractDocs.js@commit:673dd514c094"
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      "supersededBy": [
        "RFC1113"
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      "supersededBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
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        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc1040/",
        "updated": "2026-10-14T18:49:05.364Z",
        "version": "extractDocs.js@commit:673dd514c094"
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      "supersedes": [
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        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
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        "updated": "2026-10-14T18:49:05.364Z",
        "version": "extractDocs.js@commit:673dd514c094"
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