{"categories":["BitTorrent"],"html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fteamikl.hatenadiary.org%2Fentry%2F20040520%2Fp2\" title=\" \u6b20\u9665\u30d4\u30fc\u30b9\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u65b9\u6cd5\u3002 - Hello world !\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","title":" \u6b20\u9665\u30d4\u30fc\u30b9\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u65b9\u6cd5\u3002","width":"100%","type":"rich","provider_url":"https://hatena.blog","published":"2004-05-20 00:00:01","description":"\u30d5\u30a1\u30a4\u30eb\u306e \"piece length\"\u30d0\u30a4\u30c8\u5206\u306eSHA hash\u5024\u3068\u3001\u30e1\u30bf\u60c5\u5831\u30d5\u30a1\u30a4\u30eb(.torrent)\u306b\u542b\u307e\u308c\u308b metainfo[\"info\"][\"pieces\"] \u306e 20 bytes\u3092\u6bd4\u8f03\u3059\u308b\u3068\u30c1\u30a7\u30c3\u30af\u3067\u304d\u308b\u3089\u3057\u3044\u3002BEncoding\u306e\u30bd\u30fc\u30b9\u306f\u4ee5\u524d\u8f09\u305b\u305f\u306e\u3067\u3001.torrent\u306e\u30c7\u30b3\u30fc\u30c9\u306b\u306f\u305d\u308c\u3092\u5229\u7528\u3057\u3066\u3002 require 'digest/sha1' # fh .. \u30d5\u30a1\u30a4\u30eb \u30cf\u30f3\u30c9\u30eb # pieces .. \u30e1\u30bf\u60c5\u5831\u30d5\u30a1\u30a4\u30eb\u306e meta[\"info\"][\"pieces\"] # piece_length .. \u30e1\u30bf\u60c5\u5831\u30d5\u30a1\u30a4\u30eb\u5185\u306e meta[\"info\"][\"piece length\u2026","author_name":"teamikl","height":"190","url":"https://teamikl.hatenadiary.org/entry/20040520/p2","image_url":null,"version":"1.0","blog_title":"Hello world !","blog_url":"https://teamikl.hatenadiary.org/","author_url":"https://blog.hatena.ne.jp/teamikl/","provider_name":"Hatena Blog"}