{
  "$schema": "/api/schemas/documents.schema.json",
  "apiVersion": "1.1.0",
  "lastModified": "2026-10-08T22:21:19.647Z",
  "sourcePath": "src/main/data/docs",
  "docId": "RFC7539",
  "document": {
    "abstract": "This document defines the ChaCha20 stream cipher as well as the use of the Poly1305 authenticator, both as stand-alone algorithms and as a \"combined mode\", or Authenticated Encryption with Associated Data (AEAD) algorithm. This document does not introduce any new crypto, but is meant to serve as a stable reference and an implementation guide. It is a product of the Crypto Forum Research Group (CFRG).",
    "abstract$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML abstract",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "authors": [
      {
        "name": "Yoav Nir"
      },
      {
        "name": "Adam Langley"
      }
    ],
    "authors$meta": {
      "confidence": "high",
      "note": "Parsed from Datatracker doc page article:author (profile full names)",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "docId": "RFC7539",
    "docId$meta": {
      "confidence": "high",
      "note": "Derived from RFC number or Datatracker identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "docLabel": "IETF RFC 7539",
    "docLabel$meta": {
      "confidence": "high",
      "note": "Constructed from provider and document identifier",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "docNumber": "7539",
    "docNumber$meta": {
      "confidence": "high",
      "note": "Parsed from RFC info page report metadata",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "docTitle": "ChaCha20 and Poly1305 for IETF Protocols",
    "docTitle$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML title",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "docType": "Informational",
    "docType$meta": {
      "confidence": "high",
      "note": "Mapped from Datatracker std_level or RFC status text",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "doi": "10.17487/RFC7539",
    "doi$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML doi",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "href": "https://doi.org/10.17487/RFC7539",
    "href$meta": {
      "confidence": "high",
      "note": "Derived from DOI (https://doi.org/<doi>)",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "keywords": [
      "AEAD"
    ],
    "keywords$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML keywords",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "pages": "45",
    "pages$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML page-count",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "publicationDate": "2015-05-01",
    "publicationDate$meta": {
      "confidence": "high",
      "note": "Parsed from RFC index XML date",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "publisher": "IETF",
    "publisher$meta": {
      "confidence": "high",
      "note": "Static: provider",
      "originalValue": null,
      "source": "parsed",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "references": {
      "bibliographic": [
        "10.1007-11894063_1",
        "NIST.FIPS.197",
        "10.1007-978-3-540-71039-4_30",
        "10.1007-978-3-642-25243-3_21",
        "CACE.NaCl.201207",
        "GITHUB.floodyberry.poly1305-donna.e6ad6e0.201603",
        "SSCID.12944277",
        "RFC4868",
        "RFC5116",
        "RFC7296",
        "NIST.SP.800-67r1",
        "IETF.draft-mcgrew-standby-cipher-00",
        "10.1007-978-3-642-37682-5_24",
        "orphan/RFC7539/h:1f98dbc4"
      ],
      "bibliographic$meta": {
        "confidence": "medium",
        "flag": "MIXED_REF_LAYOUT_RISK anchored=17 proseBlocks=28 skippedAnchorBlocks=20",
        "note": "Parsed from RFC HTML references/informative sections",
        "originalValue": [],
        "reviewRequired": true,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      },
      "normative": [
        "UIC.chacha.20080128",
        "10.1007-11502760_3",
        "RFC2119"
      ],
      "normative$meta": {
        "confidence": "high",
        "note": "Parsed from RFC HTML normative references sections",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      }
    },
    "resolvedHref": "https://www.rfc-editor.org/info/rfc7539/",
    "resolvedHref$meta": {
      "confidence": "high",
      "note": "Final URL resolved via URL redirect verification",
      "originalValue": null,
      "source": "resolved",
      "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
      "updated": "2026-10-08T22:21:19.647Z",
      "version": "extractDocs.js@commit:519ac5cc1b42"
    },
    "status": {
      "active": false,
      "active$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      },
      "errataExist": true,
      "errataExist$meta": {
        "confidence": "high",
        "note": "Derived from presence of errata links on RFC/Datatracker pages",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      },
      "errataUrl": [
        "https://www.rfc-editor.org/errata/rfc7539",
        "https://www.rfc-editor.org/errata_search.php?rfc=7539",
        "https://www.rfc-editor.org/rfc/inline-errata/rfc7539.html"
      ],
      "errataUrl$meta": {
        "confidence": "high",
        "note": "Parsed from errata links on RFC/Datatracker pages",
        "originalValue": [],
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      },
      "latestVersion": false,
      "latestVersion$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      },
      "statusNote": "Informational",
      "statusNote$meta": {
        "confidence": "high",
        "note": "Mapped from Datatracker doc.json std_level",
        "originalValue": null,
        "source": "parsed",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      },
      "superseded": true,
      "superseded$meta": {
        "confidence": "high",
        "note": "Derived from supersession relationship fields",
        "originalValue": null,
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      },
      "supersededBy": [
        "RFC8439"
      ],
      "supersededBy$meta": {
        "confidence": "high",
        "note": "Parsed from RFC index XML",
        "originalValue": [],
        "source": "resolved",
        "sourceUrl": "https://www.rfc-editor.org/info/rfc7539/",
        "updated": "2026-10-08T22:21:19.647Z",
        "version": "extractDocs.js@commit:519ac5cc1b42"
      }
    }
  }
}