{
  "schema_version": "REFERENCE-1.0",
  "as_of": "2026-10-23",
  "item": {
    "id": "METHOD-0260",
    "kind": "METHOD",
    "title": "Pythonのhashlibで配布ファイルのSHA-256を照合する",
    "last_verified": "2026-10-23",
    "currentness": "VERIFIED_AS_OF",
    "revision": 1,
    "requirements": [
      "Python実行環境",
      "原典と導入済みversionの対応を確認し、権限のある検証用入力・別の出力先を用意する"
    ],
    "suitable_for": "大きなファイルの転送前後を照合する場面。",
    "unsuitable_for": "同じ不明な配布元のhashだけで発行者を保証する用途。",
    "purpose": "Pythonのhashlibで配布ファイルのSHA-256を照合する",
    "composition": "Python",
    "shortest_path": [
      "信頼できる経路から期待するhashを用意する",
      "ファイルを分割して読み、sha256へ順に渡す",
      "計算値と期待値を完全一致で比較する"
    ],
    "verification": "一文字異なる期待値や内容を変えたファイルで不一致を検出します。",
    "coverage": [
      "programming language",
      "files/documents/PDF"
    ],
    "canonical_url": "https://enterprise-ai-dictionary.com/reference/methods/method-0260",
    "retrieval": "FULL",
    "publication": "PUBLIC_NO_ADS",
    "index": "INDEX",
    "ads": "OFF",
    "link_policy": "DIRECT"
  },
  "relations": [
    {
      "id": "REFREL-c4cf37ca682b2924",
      "subject_id": "SRC-EVID-REF-0257",
      "predicate": "supports",
      "object_id": "METHOD-0260",
      "scope_note": "公開一次資料に基づく利用経路。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0257"
      ]
    },
    {
      "id": "REFREL-11a08a48dfa9d485",
      "subject_id": "TOOL-0006",
      "predicate": "supports",
      "object_id": "METHOD-0260",
      "scope_note": "公開一次資料に基づく利用経路。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0257"
      ]
    },
    {
      "id": "REFREL-3e5498fb6e3828c8",
      "subject_id": "METHOD-0260",
      "predicate": "uses",
      "object_id": "TOOL-0006",
      "scope_note": "公開一次資料に基づく利用経路。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0257"
      ]
    },
    {
      "id": "REFREL-987bc24fd5517f9d",
      "subject_id": "METHOD-0260",
      "predicate": "requires",
      "object_id": "IDX-C03-004",
      "scope_note": "検証・運用上の関連概念。製品の基本定義とは区別する。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0257"
      ]
    },
    {
      "id": "REFREL-d6fb78c66c920e4a",
      "subject_id": "IDX-C03-004",
      "predicate": "explains",
      "object_id": "METHOD-0260",
      "scope_note": "利用結果の確認や運用上の注意点を読む経路。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0257"
      ]
    },
    {
      "id": "REFREL-8505530e30cc207c",
      "subject_id": "METHOD-0260",
      "predicate": "alternative_to",
      "object_id": "METHOD-0026",
      "scope_note": "同じSHA-256照合をPython標準ライブラリーで行うか、OpenSSL CLIで行うかの違い。",
      "last_verified": "2026-10-23",
      "source_ids": [
        "SRC-EVID-REF-0257"
      ]
    }
  ]
}