{"id":477601,"date":"2023-08-09T09:17:42","date_gmt":"2023-08-09T09:17:42","guid":{"rendered":""},"modified":"2023-09-05T11:15:02","modified_gmt":"2023-09-05T11:15:02","slug":"initialization-vector","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/initialization-vector\/","title":{"rendered":"\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb"},"content":{"rendered":"

\u5c0e\u5165<\/h2>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb (IV) \u306f\u3001\u30c7\u30fc\u30bf\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u6a5f\u5bc6\u6027\u3092\u9ad8\u3081\u308b\u305f\u3081\u306b\u3055\u307e\u3056\u307e\u306a\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u4f7f\u7528\u3055\u308c\u308b\u91cd\u8981\u306a\u6697\u53f7\u5316\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002\u3053\u308c\u306f\u3001AES (Advanced Encryption Standard) \u3084 DES (Data Encryption Standard) \u306a\u3069\u306e\u4e00\u822c\u7684\u306a\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u542b\u3080\u30d6\u30ed\u30c3\u30af\u6697\u53f7\u30e2\u30fc\u30c9\u306e\u52d5\u4f5c\u306b\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3067\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u6b74\u53f2\u3001\u69cb\u9020\u3001\u7a2e\u985e\u3001\u6a5f\u80fd\u3001\u4f7f\u7528\u6cd5\u3001\u304a\u3088\u3073\u5c06\u6765\u306e\u5c55\u671b\u306b\u3064\u3044\u3066\u8a73\u3057\u304f\u8aac\u660e\u3057\u307e\u3059\u3002<\/p>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u6b74\u53f2<\/h2>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u6982\u5ff5\u306f\u3001\u6697\u53f7\u306e\u521d\u671f\u306e\u9803\u306b\u9061\u308a\u307e\u3059\u3002\u305d\u306e\u8d77\u6e90\u306f\u3001\u30d6\u30ed\u30c3\u30af\u6697\u53f7\u306e\u958b\u767a\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u305f\u30db\u30eb\u30b9\u30c8\u30fb\u30d5\u30a1\u30a4\u30b9\u30c6\u30eb\u306e\u7814\u7a76\u306b\u9061\u308a\u307e\u3059\u3002\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u6982\u5ff5\u306f\u30011973 \u5e74\u306b\u5f7c\u306e\u8ad6\u6587\u300c\u6697\u53f7\u5316\u3068\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u300d\u3067\u521d\u3081\u3066\u7d39\u4ecb\u3055\u308c\u307e\u3057\u305f\u3002\u3053\u306e\u8ad6\u6587\u306f\u3001\u73fe\u4ee3\u306e\u30d6\u30ed\u30c3\u30af\u6697\u53f7\u8a2d\u8a08\u306e\u57fa\u790e\u3092\u7bc9\u304d\u3001\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306f\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3057\u305f\u3002<\/p>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u8a73\u7d30\u60c5\u5831<\/h2>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306f\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u4e00\u610f\u6027\u3068\u4e88\u6e2c\u4e0d\u53ef\u80fd\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u30d6\u30ed\u30c3\u30af\u6697\u53f7\u3078\u306e\u8ffd\u52a0\u5165\u529b\u3067\u3059\u3002\u305d\u306e\u4e3b\u306a\u76ee\u7684\u306f\u3001\u540c\u3058\u5e73\u6587\u304c\u540c\u3058\u30ad\u30fc\u3067\u8907\u6570\u56de\u6697\u53f7\u5316\u3055\u308c\u305f\u5834\u5408\u3067\u3082\u3001\u6697\u53f7\u6587\u306b\u30d1\u30bf\u30fc\u30f3\u304c\u73fe\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002IV \u306f\u6697\u53f7\u5316\u524d\u306b\u5e73\u6587\u306e\u6700\u521d\u306e\u30d6\u30ed\u30c3\u30af\u3068 XOR \u3055\u308c\u3001\u5f8c\u7d9a\u306e\u30d6\u30ed\u30c3\u30af\u306f\u524d\u306e\u6697\u53f7\u6587\u30d6\u30ed\u30c3\u30af\u3068 XOR \u3055\u308c\u307e\u3059\u3002<\/p>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u5185\u90e8\u69cb\u9020<\/h2>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306f\u901a\u5e38\u3001\u6697\u53f7\u306e\u30d6\u30ed\u30c3\u30af \u30b5\u30a4\u30ba\u306b\u5fdc\u3058\u3066\u56fa\u5b9a\u9577\u306e\u30d0\u30a4\u30ca\u30ea\u6587\u5b57\u5217\u3068\u3057\u3066\u8868\u3055\u308c\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001AES \u3067\u306f\u3001IV \u306e\u9577\u3055\u306f\u30ad\u30fc \u30b5\u30a4\u30ba\u306b\u5408\u308f\u305b\u3066 128\u3001192\u3001\u307e\u305f\u306f 256 \u30d3\u30c3\u30c8\u306b\u306a\u308a\u307e\u3059\u3002IV \u306f\u79d8\u5bc6\u30ad\u30fc\u3068\u7d44\u307f\u5408\u308f\u3055\u308c\u3066\u3001\u5404\u30c7\u30fc\u30bf \u30d6\u30ed\u30c3\u30af\u306b\u56fa\u6709\u306e\u6697\u53f7\u5316\u30b3\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u4f5c\u6210\u3057\u3001\u653b\u6483\u8005\u304c\u30d1\u30bf\u30fc\u30f3\u3084\u76f8\u95a2\u95a2\u4fc2\u3092\u8b58\u5225\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u4e3b\u306a\u7279\u5fb4\u306e\u5206\u6790<\/h2>\n

\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u4e3b\u306a\u6a5f\u80fd\u3068\u5229\u70b9\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n

    \n
  1. \n

    \u72ec\u81ea\u6027:<\/strong> IV \u306f\u3001\u540c\u3058\u30c7\u30fc\u30bf\u3092\u540c\u3058\u30ad\u30fc\u3067\u6697\u53f7\u5316\u3059\u308b\u5834\u5408\u3067\u3082\u3001\u5404\u6697\u53f7\u5316\u64cd\u4f5c\u3067\u7570\u306a\u308b\u51fa\u529b\u304c\u5f97\u3089\u308c\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n

  2. \n

    \u30e9\u30f3\u30c0\u30e0\u6027:<\/strong> \u512a\u308c\u305f IV \u306f\u3001\u4e88\u6e2c\u4e0d\u53ef\u80fd\u3067\u653b\u6483\u306b\u8010\u3048\u3089\u308c\u308b\u3088\u3046\u306b\u3001\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u4e71\u6570\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u3092\u4f7f\u7528\u3057\u3066\u751f\u6210\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n

  3. \n

    \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5f37\u5316:<\/strong> IV \u306f\u3001\u7279\u306b CBC (Cipher Block Chaining) \u3084 CTR (Counter mode) \u306a\u3069\u306e\u30d6\u30ed\u30c3\u30af\u6697\u53f7\u30e2\u30fc\u30c9\u3067\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5927\u5e45\u306b\u5411\u4e0a\u3055\u305b\u307e\u3059\u3002<\/p>\n<\/li>\n

  4. \n

    \u6c7a\u5b9a\u8ad6\u306e\u9632\u6b62:<\/strong> IV \u304c\u306a\u3051\u308c\u3070\u3001\u540c\u3058\u30c7\u30fc\u30bf\u3092\u540c\u3058\u30ad\u30fc\u3067\u6697\u53f7\u5316\u3059\u308b\u3068\u3001\u540c\u4e00\u306e\u6697\u53f7\u6587\u30d6\u30ed\u30c3\u30af\u304c\u751f\u6210\u3055\u308c\u3001\u6697\u53f7\u5316\u304c\u6c7a\u5b9a\u8ad6\u7684\u306b\u306a\u308a\u3001\u653b\u6483\u306b\u5bfe\u3057\u3066\u8106\u5f31\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

    \u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u7a2e\u985e<\/h2>\n

    \u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306b\u306f\u4e3b\u306b 2 \u3064\u306e\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

      \n
    1. \n

      \u30b9\u30bf\u30c6\u30a3\u30c3\u30afIV:<\/strong> \u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u3067\u306f\u3001\u3059\u3079\u3066\u306e\u30c7\u30fc\u30bf \u30d6\u30ed\u30c3\u30af\u306e\u6697\u53f7\u5316\u306b\u540c\u3058 IV \u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u5b9f\u88c5\u306f\u7c21\u5358\u3067\u3059\u304c\u3001\u540c\u4e00\u306e IV \u306b\u3088\u3063\u3066\u6697\u53f7\u6587\u306b\u30d1\u30bf\u30fc\u30f3\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u305f\u3081\u3001\u5b89\u5168\u6027\u306f\u4f4e\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n

    2. \n

      \u30c0\u30a4\u30ca\u30df\u30c3\u30afIV:<\/strong> \u5404\u30c7\u30fc\u30bf \u30d6\u30ed\u30c3\u30af\u306f\u3001\u4e00\u610f\u304b\u3064\u30e9\u30f3\u30c0\u30e0\u306b\u751f\u6210\u3055\u308c\u305f IV \u3067\u6697\u53f7\u5316\u3055\u308c\u307e\u3059\u3002\u3053\u306e\u30a2\u30d7\u30ed\u30fc\u30c1\u306b\u3088\u308a\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u5927\u5e45\u306b\u5f37\u5316\u3055\u308c\u3001\u30d1\u30bf\u30fc\u30f3\u30d9\u30fc\u30b9\u306e\u653b\u6483\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

      \u4ee5\u4e0b\u306b 2 \u3064\u306e\u30bf\u30a4\u30d7\u306e\u6bd4\u8f03\u8868\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n\n\n\n\n\n\n\n\n
      \u7279\u5fb4<\/th>\n\u30b9\u30bf\u30c6\u30a3\u30c3\u30afIV<\/th>\n\u30c0\u30a4\u30ca\u30df\u30c3\u30afIV<\/th>\n<\/tr>\n<\/thead>\n
      \u72ec\u81ea\u6027<\/td>\n\u9650\u5b9a<\/td>\n\u9ad8\u3044<\/td>\n<\/tr>\n
      \u5b89\u5168<\/td>\n\u4f4e\u3044<\/td>\n\u9ad8\u3044<\/td>\n<\/tr>\n
      \u8907\u96d1<\/td>\n\u5358\u7d14<\/td>\n\u3088\u308a\u8907\u96d1<\/td>\n<\/tr>\n
      \u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9<\/td>\n\u4f4e\u3044<\/td>\n\u3084\u3084\u9ad8\u3044\u3067\u3059<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      \u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u4f7f\u7528\u65b9\u6cd5\u3068\u95a2\u9023\u3059\u308b\u554f\u984c<\/h2>\n

      \u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3055\u307e\u3056\u307e\u306a\u6697\u53f7\u5316\u30b7\u30ca\u30ea\u30aa\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n

        \n
      1. \n

        \u30c7\u30fc\u30bf\u6697\u53f7\u5316\uff1a<\/strong> IV \u306f\u6697\u53f7\u5316\u30ad\u30fc\u3068\u4e00\u7dd2\u306b\u4f7f\u7528\u3055\u308c\u3001\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3057\u3001\u5404\u6697\u53f7\u5316\u64cd\u4f5c\u3067\u4e00\u610f\u304b\u3064\u5b89\u5168\u306a\u6697\u53f7\u6587\u304c\u751f\u6210\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n

      2. \n

        \u5b89\u5168\u306a\u901a\u4fe1:<\/strong> TLS (\u30c8\u30e9\u30f3\u30b9\u30dd\u30fc\u30c8\u5c64\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3) \u306a\u3069\u306e\u5b89\u5168\u306a\u901a\u4fe1\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u306f\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u4ea4\u63db\u3055\u308c\u308b\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/li>\n

      3. \n

        \u30d5\u30a1\u30a4\u30eb\u6697\u53f7\u5316:<\/strong> IV \u306f\u3001\u30d5\u30a1\u30a4\u30eb\u3092\u6697\u53f7\u5316\u3057\u3001\u540c\u3058\u5185\u5bb9\u306e\u30d5\u30a1\u30a4\u30eb\u3067\u3042\u3063\u3066\u3082\u7570\u306a\u308b\u6697\u53f7\u6587\u3092\u6301\u3064\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

        \u305f\u3060\u3057\u3001\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u4f7f\u7528\u306b\u95a2\u3057\u3066\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u8ab2\u984c\u3084\u554f\u984c\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

          \n
        1. \n

          IV\u7ba1\u7406:<\/strong> \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u4fb5\u5bb3\u3059\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b IV \u306e\u518d\u5229\u7528\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001IV \u3092\u9069\u5207\u306b\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<\/li>\n

        2. \n

          \u30e9\u30f3\u30c0\u30e0\u6027\u3068\u751f\u6210:<\/strong> IV \u306e\u30e9\u30f3\u30c0\u30e0\u6027\u3068\u9069\u5207\u306a\u751f\u6210\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u306f\u56f0\u96e3\u306a\u5834\u5408\u304c\u3042\u308a\u3001\u4e71\u6570\u30b8\u30a7\u30cd\u30ec\u30fc\u30bf\u30fc\u306e\u54c1\u8cea\u304c\u975e\u5e38\u306b\u91cd\u8981\u3067\u3059\u3002<\/p>\n<\/li>\n

        3. \n

          \u4f1d\u67d3 ; \u611f\u67d3\uff1a<\/strong> \u5834\u5408\u306b\u3088\u3063\u3066\u306f\u3001IV \u3092\u53d7\u4fe1\u8005\u306b\u5b89\u5168\u306b\u9001\u4fe1\u3059\u308b\u3053\u3068\u304c\u8ffd\u52a0\u306e\u61f8\u5ff5\u4e8b\u9805\u306b\u306a\u308b\u3053\u3068\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<\/li>\n<\/ol>\n

          \u4e3b\u306a\u7279\u5fb4\u3068\u6bd4\u8f03<\/h2>\n\n\n\n\n\n\n\n\n\n
          \u5074\u9762<\/th>\n\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb<\/th>\n\u30ce\u30f3\u30b9<\/th>\n<\/tr>\n<\/thead>\n
          \u76ee\u7684<\/td>\n\u6697\u53f7\u5316\u306e\u5f37\u5316<\/td>\n\u4e00\u610f\u6027\u3092\u78ba\u4fdd\u3059\u308b<\/td>\n<\/tr>\n
          \u4f7f\u7528\u6cd5<\/td>\n\u30d6\u30ed\u30c3\u30af\u6697\u53f7<\/td>\n\u30b9\u30c8\u30ea\u30fc\u30e0\u6697\u53f7<\/td>\n<\/tr>\n
          \u9577\u3055<\/td>\n\u56fa\u5b9a\u3001\u30d6\u30ed\u30c3\u30af\u30b5\u30a4\u30ba\u30d9\u30fc\u30b9<\/td>\n\u53ef\u5909\u3001\u30d7\u30ed\u30c8\u30b3\u30eb\u30d9\u30fc\u30b9<\/td>\n<\/tr>\n
          \u30e9\u30f3\u30c0\u30e0\u6027\u306e\u8981\u4ef6<\/td>\n\u306f\u3044<\/td>\n\u306f\u3044<\/td>\n<\/tr>\n
          \u30ad\u30fc\u3068\u306e\u95a2\u4fc2<\/td>\n\u72ec\u7acb\u3057\u305f<\/td>\n\u4f9d\u5b58<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          \u672a\u6765\u306e\u5c55\u671b\u3068\u30c6\u30af\u30ce\u30ed\u30b8\u30fc<\/h2>\n

          \u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u304c\u9032\u5316\u3057\u7d9a\u3051\u308b\u4e2d\u3001\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u306e\u5f79\u5272\u306f\u3001\u30c7\u30fc\u30bf\u3068\u901a\u4fe1\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3059\u308b\u4e0a\u3067\u5f15\u304d\u7d9a\u304d\u91cd\u8981\u306b\u306a\u308a\u307e\u3059\u3002\u4eca\u5f8c\u306e\u9032\u6b69\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n

            \n
          1. \n

            IV\u7ba1\u7406\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3:<\/strong> IV \u3092\u52b9\u679c\u7684\u306b\u7ba1\u7406\u3057\u3001IV \u306e\u518d\u5229\u7528\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3059\u308b\u9769\u65b0\u7684\u306a\u30a2\u30d7\u30ed\u30fc\u30c1\u3002<\/p>\n<\/li>\n

          2. \n

            \u30dd\u30b9\u30c8\u91cf\u5b50\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3:<\/strong> \u6f5c\u5728\u7684\u306a\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u8105\u5a01\u306b\u8010\u3048\u308b\u305f\u3081\u306e\u3001\u30dd\u30b9\u30c8\u91cf\u5b50\u6697\u53f7\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u304a\u3051\u308b IV \u306e\u4f7f\u7528\u6cd5\u306e\u8abf\u67fb\u3002<\/p>\n<\/li>\n<\/ol>\n

            \u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3068\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb<\/h2>\n

            \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u306b\u533f\u540d\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u63d0\u4f9b\u3059\u308b\u4e0a\u3067\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u81ea\u4f53\u306f\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306b\u76f4\u63a5\u95a2\u4fc2\u3059\u308b\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u30c7\u30fc\u30bf\u8ee2\u9001\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u57fa\u672c\u7684\u306a\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3042\u308a\u3001OneProxy \u306a\u3069\u306e\u30d7\u30ed\u30ad\u30b7 \u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u6697\u53f7\u5316\u30e1\u30ab\u30cb\u30ba\u30e0\u3067\u3053\u308c\u3092\u5229\u7528\u3057\u3066\u30e6\u30fc\u30b6\u30fc \u30c7\u30fc\u30bf\u306e\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u3068\u6a5f\u5bc6\u6027\u3092\u78ba\u4fdd\u3067\u304d\u307e\u3059\u3002<\/p>\n

            \u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n

            \u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u3068\u6697\u53f7\u5316\u6280\u8853\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n

              \n
            1. NIST\u7279\u5225\u520a\u884c\u7269800-38A\uff1a\u300c\u30d6\u30ed\u30c3\u30af\u6697\u53f7\u306e\u52d5\u4f5c\u30e2\u30fc\u30c9\u306b\u95a2\u3059\u308b\u63a8\u5968\u4e8b\u9805\u300d \u2013 \u30ea\u30f3\u30af<\/a><\/li>\n
            2. \u300c\u6697\u53f7\u5316\u3068\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u300d\u30db\u30eb\u30b9\u30c8\u30fb\u30d5\u30a1\u30a4\u30b9\u30c6\u30eb\u8457 \u2013 \u30ea\u30f3\u30af<\/a><\/li>\n
            3. TLS 1.3 \u4ed5\u69d8 \u2013 \u30ea\u30f3\u30af<\/a><\/li>\n<\/ol>\n

              \u6a5f\u5bc6\u60c5\u5831\u3092\u52b9\u679c\u7684\u306b\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u3001\u5e38\u306b\u30c7\u30fc\u30bf \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u512a\u5148\u3057\u3001\u6697\u53f7\u5316\u6280\u8853\u306e\u6700\u65b0\u306e\u9032\u6b69\u306b\u3064\u3044\u3066\u5e38\u306b\u60c5\u5831\u3092\u5165\u624b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>","protected":false},"featured_media":477602,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477601","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about Initialization Vector (IV) - A Comprehensive Overview<\/mark>","faq_items":[{"question":"What is the Initialization Vector (IV) and why is it important?","answer":"

              The Initialization Vector (IV) is a crucial cryptographic component used in encryption algorithms like AES and DES. It ensures the uniqueness of encrypted data and prevents patterns from emerging in the ciphertext. IVs are essential in enhancing the security of data and communication.<\/p>"},{"question":"Where did the concept of Initialization Vector originate?","answer":"

              The concept of Initialization Vector dates back to 1973 when Horst Feistel introduced it in his paper \"Cryptography and Computer Privacy.\" He played a significant role in the development of block ciphers, where the IV played a pivotal role in improving security.<\/p>"},{"question":"How does the Initialization Vector work internally?","answer":"

              The Initialization Vector is represented as a binary string of fixed length, depending on the block size of the cipher (e.g., 128, 192, or 256 bits for AES). It is combined with the secret key to create a unique encryption context for each data block, preventing patterns or correlations in the ciphertext.<\/p>"},{"question":"What are the main features and advantages of Initialization Vectors?","answer":"

              The key features of IVs include uniqueness, randomness, security enhancement, and prevention of determinism in encryption operations. They ensure that encrypting the same data with the same key produces different outputs and make encryption more secure.<\/p>"},{"question":"What are the different types of Initialization Vectors?","answer":"

              There are two main types of Initialization Vectors: static IVs (used for all data blocks) and dynamic IVs (uniquely generated for each data block). Dynamic IVs offer higher security by preventing pattern-based attacks.<\/p>"},{"question":"How is the Initialization Vector used and what issues can arise?","answer":"

              Initialization Vectors are used in data encryption, secure communication protocols like TLS, and file encryption. Proper IV management, randomness, and transmission are important issues to address to maintain security.<\/p>"},{"question":"How does the Initialization Vector compare to other terms like Nonce?","answer":"

              Initialization Vectors are used in block ciphers, while nonces are used in stream ciphers. IVs have a fixed length based on the block size, whereas nonces have variable lengths based on the protocol.<\/p>"},{"question":"What are the future perspectives and technologies related to Initialization Vector?","answer":"

              Future advancements may include improved IV management solutions and exploration of IV usage in post-quantum cryptographic algorithms to withstand quantum computing threats.<\/p>"},{"question":"How are proxy servers associated with Initialization Vectors?","answer":"

              While the Initialization Vector itself is not directly related to proxy servers, proxy providers like OneProxy can utilize it in their encryption mechanisms to ensure data privacy and confidentiality for users.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/477601","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/477601\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/477602"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=477601"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}