{
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    "abstract": "This document defines a mechanism to enable in-band transmission of Online Certificate Status Protocol (OCSP) responses in the Kerberos network authentication protocol. These responses are used to verify the validity of the certificates used in Public Key Cryptography for Initial Authentication in Kerberos (PKINIT), which is the Kerberos Version 5 extension that provides for the use of public key cryptography. [STANDARDS-TRACK]",
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    "authors": [
      {
        "name": "Larry Zhu"
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      {
        "name": "Karthik Jaganathan"
      },
      {
        "name": "Nicolás Williams"
      }
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      "confidence": "high",
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      "updated": "2026-10-16T15:46:19.974Z",
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    "docId": "RFC4557",
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      "confidence": "high",
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      "originalValue": null,
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      "updated": "2026-10-16T15:46:19.973Z",
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    "docLabel": "IETF RFC 4557",
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      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
      "updated": "2026-10-16T15:46:19.974Z",
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      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
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      "source": "parsed",
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      "updated": "2026-10-16T15:46:19.974Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
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    "docTitle": "Online Certificate Status Protocol (OCSP) Support for Public Key Cryptography for Initial Authentication in Kerberos (PKINIT)",
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      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
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      "updated": "2026-10-16T15:46:19.974Z",
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      "confidence": "high",
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      "originalValue": null,
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      "updated": "2026-10-16T15:46:19.974Z",
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    },
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    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
      "updated": "2026-10-16T15:46:19.974Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "href": "https://doi.org/10.17487/RFC4557",
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      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
      "updated": "2026-10-16T15:46:19.974Z",
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    "pages": "6",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
      "updated": "2026-10-16T15:46:19.974Z",
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    },
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      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
      "updated": "2026-10-16T15:46:19.974Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
    },
    "publisher": "IETF",
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      "confidence": "high",
      "note": "Static: provider",
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      "source": "parsed",
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      "updated": "2026-10-16T15:46:19.974Z",
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      "bibliographic$meta": {
        "confidence": "medium",
        "note": "Citations without a standard ID, kept as MRI orphan refs (or resolved once the reference label was stripped)",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
        "updated": "2026-10-16T15:48:09.417Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
      },
      "normative": [
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        "RFC2560",
        "RFC4120",
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        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
        "updated": "2026-10-16T15:46:19.974Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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    "resolvedHref": "https://www.rfc-editor.org/info/rfc4557/",
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      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
      "updated": "2026-10-16T15:46:19.974Z",
      "version": "extractDocs.js@commit:e0fe4a71cd26"
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        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
        "updated": "2026-10-16T15:46:19.974Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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      "errataExist": true,
      "errataExist$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/rfc4557/",
        "updated": "2026-10-16T15:46:19.974Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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      "errataUrl": [
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        "https://www.rfc-editor.org/errata_search.php?rfc=4557"
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      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
        "updated": "2026-10-16T15:46:19.974Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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      "latestVersion": true,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
        "updated": "2026-10-16T15:46:19.974Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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      "statusNote": "Proposed Standard",
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        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc4557/",
        "updated": "2026-10-16T15:46:19.974Z",
        "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/rfc4557/",
        "updated": "2026-10-16T15:46:19.974Z",
        "version": "extractDocs.js@commit:e0fe4a71cd26"
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