{
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    "abstract": "This note describes a revision to the RIPv2 Cryptographic Authentication mechanism originally specified in RFC 2082. This document obsoletes RFC 2082 and updates RFC 2453. This document adds details of how the SHA family of hash algorithms can be used with RIPv2 Cryptographic Authentication, whereas the original document only specified the use of Keyed-MD5. Also, this document clarifies a potential issue with an active attack on this mechanism and adds significant text to the Security Considerations section. [STANDARDS-TRACK]",
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    "authors": [
      {
        "name": "Ran Atkinson"
      },
      {
        "name": "M Fanto"
      }
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      "confidence": "high",
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      "updated": "2026-10-13T22:23:57.834Z",
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    "docId": "RFC4822",
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      "confidence": "high",
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      "originalValue": null,
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      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
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    "docLabel": "IETF RFC 4822",
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      "confidence": "high",
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      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
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    "docNumber": "4822",
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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/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "docTitle": "RIPv2 Cryptographic Authentication",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
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      "confidence": "high",
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      "originalValue": null,
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      "updated": "2026-10-13T22:23:57.834Z",
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    },
    "doi": "10.17487/RFC4822",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "href": "https://doi.org/10.17487/RFC4822",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "keywords": [
      "RIP2-MD5",
      "RIP",
      "Encryption"
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    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
      "version": "extractDocs.js@commit:fd871efde64d"
    },
    "publicationDate": "2007-02-01",
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "publisher": "IETF",
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      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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    "references": {
      "bibliographic": [
        "RFC2082",
        "RSA.crypto.v2n2.1996",
        "RFC4086",
        "RFC1704",
        "RFC2104",
        "RFC1723",
        "RFC1724",
        "RFC2154",
        "RFC1321",
        "orphan/RFC4822/h:03bda973",
        "orphan/RFC4822/h:488c2f0f",
        "orphan/RFC4822/h:86ba5a06"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=16 proseBlocks=19 skippedAnchorBlocks=17",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
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        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "normative": [
        "RFC2119",
        "RFC2453",
        "NIST.FIPS.180-2",
        "NIST.FIPS.198"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc4822/",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
      "updated": "2026-10-13T22:23:57.834Z",
      "version": "extractDocs.js@commit:fd871efde64d"
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "amends": [
        "RFC2453"
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      "amends$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "errataExist": false,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
      },
      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "statusNote": "Proposed Standard",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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      "superseded": false,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4822/",
        "updated": "2026-10-13T22:23:57.834Z",
        "version": "extractDocs.js@commit:fd871efde64d"
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