{"id":476497,"date":"2023-08-09T07:29:55","date_gmt":"2023-08-09T07:29:55","guid":{"rendered":""},"modified":"2023-09-05T11:12:53","modified_gmt":"2023-09-05T11:12:53","slug":"cryptographic-key","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/cryptographic-key\/","title":{"rendered":"\u6697\u53f7\u9375"},"content":{"rendered":"<h2>\u6697\u53f7\u9375\u306e\u7d39\u4ecb<\/h2>\n<p>\u6697\u53f7\u30ad\u30fc\u306f\u3001\u73fe\u4ee3\u306e\u6697\u53f7\u5316\u304a\u3088\u3073\u5fa9\u53f7\u5316\u30d7\u30ed\u30bb\u30b9\u306e\u57fa\u672c\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3042\u308a\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u30c7\u30fc\u30bf\u3068\u901a\u4fe1\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4fdd\u8b77\u306b\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u5e73\u6587\u30c7\u30fc\u30bf\u304b\u3089\u6697\u53f7\u6587\u3078\u306e\u6570\u5b66\u7684\u5909\u63db (\u6697\u53f7\u5316) \u3068\u3001\u305d\u306e\u9006 (\u5fa9\u53f7\u5316) \u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u308b\u60c5\u5831\u3067\u3059\u3002\u3053\u306e\u91cd\u8981\u306a\u60c5\u5831\u306b\u3088\u308a\u3001\u6a29\u9650\u306e\u306a\u3044\u7b2c\u4e09\u8005\u304c\u6697\u53f7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u7406\u89e3\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u306a\u308a\u3001\u6a5f\u5bc6\u60c5\u5831\u304c\u60aa\u610f\u306e\u3042\u308b\u8105\u5a01\u304b\u3089\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002<\/p>\n<h2>\u6697\u53f7\u9375\u306e\u6b74\u53f2<\/h2>\n<p>\u6697\u53f7\u306e\u8d77\u6e90\u306f\u53e4\u4ee3\u6587\u660e\u306b\u307e\u3067\u9061\u308a\u307e\u3059\u3002\u53e4\u4ee3\u6587\u660e\u3067\u306f\u3001\u6226\u4e89\u3084\u30b9\u30d1\u30a4\u6d3b\u52d5\u306e\u969b\u306b\u6a5f\u5bc6\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u96a0\u3059\u305f\u3081\u306b\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u304c\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3057\u305f\u3002\u6697\u53f7\u306e\u6700\u3082\u53e4\u3044\u4f8b\u306e 1 \u3064\u306f\u3001\u5358\u7d14\u306a\u63db\u5b57\u5f0f\u6697\u53f7\u3092\u4f7f\u7528\u3057\u3066\u8ecd\u4e8b\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6697\u53f7\u5316\u3057\u305f\u30b8\u30e5\u30ea\u30a2\u30b9 \u30b7\u30fc\u30b6\u30fc\u306e\u6642\u4ee3\u306b\u307e\u3067\u9061\u308a\u307e\u3059\u3002\u6697\u53f7\u6280\u8853\u306f\u6b74\u53f2\u3092\u901a\u3058\u3066\u9032\u5316\u3057\u3001\u53e4\u5178\u7684\u306a\u6697\u53f7\u304b\u3089\u6697\u53f7\u30ad\u30fc\u306b\u5927\u304d\u304f\u4f9d\u5b58\u3059\u308b\u73fe\u4ee3\u306e\u6697\u53f7\u30b7\u30b9\u30c6\u30e0\u306e\u51fa\u73fe\u307e\u3067\u81f3\u308a\u307e\u3057\u305f\u3002<\/p>\n<h2>\u6697\u53f7\u9375\u306e\u8a73\u7d30\u60c5\u5831<\/h2>\n<p>\u73fe\u4ee3\u306e\u6697\u53f7\u5316\u3067\u306f\u3001\u6697\u53f7\u5316\u30ad\u30fc\u304c\u30c7\u30fc\u30bf\u4fdd\u8b77\u306e\u4e3b\u306a\u30e1\u30ab\u30cb\u30ba\u30e0\u3068\u3057\u3066\u6a5f\u80fd\u3057\u307e\u3059\u3002\u6697\u53f7\u5316\u30ad\u30fc\u306f\u3001\u6570\u5b66\u7684\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u4f7f\u7528\u3057\u3066\u30d7\u30ec\u30fc\u30f3\u30c6\u30ad\u30b9\u30c8\u3092\u5224\u8aad\u4e0d\u53ef\u80fd\u306a\u5f62\u5f0f (\u6697\u53f7\u6587) \u306b\u5909\u63db\u3057\u3001\u305d\u306e\u9006\u3082\u884c\u3046\u3068\u3044\u3046\u539f\u7406\u3067\u6a5f\u80fd\u3057\u307e\u3059\u3002\u6697\u53f7\u5316\u30ad\u30fc\u306e\u9577\u3055\u306f\u3055\u307e\u3056\u307e\u3067\u3059\u304c\u3001\u305d\u306e\u5f37\u5ea6\u306f\u9577\u3055\u306b\u6b63\u6bd4\u4f8b\u3057\u307e\u3059\u3002\u30ad\u30fc\u304c\u9577\u3044\u307b\u3069\u5b89\u5168\u6027\u306f\u6307\u6570\u95a2\u6570\u7684\u306b\u9ad8\u304f\u306a\u308a\u3001\u6a29\u9650\u306e\u306a\u3044\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u304c\u6697\u53f7\u3092\u89e3\u8aad\u3059\u308b\u3053\u3068\u306f\u8a08\u7b97\u4e0a\u4e0d\u53ef\u80fd\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<h2>\u6697\u53f7\u9375\u306e\u5185\u90e8\u69cb\u9020<\/h2>\n<p>\u6697\u53f7\u5316\u30ad\u30fc\u306e\u5185\u90e8\u69cb\u9020\u306f\u3001\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u306f\u3001\u5bfe\u79f0\u30ad\u30fc \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u975e\u5bfe\u79f0\u30ad\u30fc \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0 (\u516c\u958b\u30ad\u30fc \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u3082\u547c\u3070\u308c\u307e\u3059) \u306e 2 \u3064\u306e\u4e3b\u306a\u30ab\u30c6\u30b4\u30ea\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<h3>\u5bfe\u79f0\u9375\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0:<\/h3>\n<ul>\n<li>\u5bfe\u79f0\u30ad\u30fc \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u306f\u3001\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u306e\u4e21\u65b9\u306b\u540c\u3058\u30ad\u30fc\u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u30ad\u30fc\u306f\u901a\u4fe1\u5f53\u4e8b\u8005\u9593\u3067\u79d8\u5bc6\u306b\u4fdd\u6301\u3055\u308c\u308b\u305f\u3081\u3001\u5b89\u5168\u306a\u30ad\u30fc\u4ea4\u63db\u65b9\u6cd5\u304c\u5fc5\u8981\u3067\u3059\u3002<\/li>\n<li>\u5bfe\u79f0\u30ad\u30fc \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u4f8b\u306b\u306f\u3001Advanced Encryption Standard (AES)\u3001Data Encryption Standard (DES)\u3001Triple DES (3DES) \u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h3>\u975e\u5bfe\u79f0\u9375\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0:<\/h3>\n<ul>\n<li>\u975e\u5bfe\u79f0\u30ad\u30fc \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u306f\u3001\u6570\u5b66\u7684\u306b\u95a2\u9023\u3059\u308b\u30ad\u30fc\u306e\u30da\u30a2 (\u516c\u958b\u30ad\u30fc\u3068\u79d8\u5bc6\u30ad\u30fc) \u304c\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u516c\u958b\u9375\u306f\u6697\u53f7\u5316\u306b\u4f7f\u7528\u3055\u308c\u3001\u79d8\u5bc6\u9375\u306f\u5fa9\u53f7\u5316\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u516c\u958b\u9375\u3067\u6697\u53f7\u5316\u3055\u308c\u305f\u60c5\u5831\u306f\u3001\u5bfe\u5fdc\u3059\u308b\u79d8\u5bc6\u9375\u3067\u306e\u307f\u5fa9\u53f7\u5316\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u975e\u5bfe\u79f0\u30ad\u30fc\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u4f8b\u306b\u306f\u3001RSA (Rivest-Shamir-Adleman) \u3084\u6955\u5186\u66f2\u7dda\u6697\u53f7 (ECC) \u306a\u3069\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u6697\u53f7\u9375\u306e\u4e3b\u306a\u7279\u5fb4\u306e\u5206\u6790<\/h2>\n<p>\u6697\u53f7\u5316\u30ad\u30fc\u306f\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u6574\u5408\u6027\u306b\u8ca2\u732e\u3059\u308b\u3044\u304f\u3064\u304b\u306e\u91cd\u8981\u306a\u6a5f\u80fd\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u6a5f\u5bc6\u6027: \u6697\u53f7\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u305f\u6697\u53f7\u5316\u306b\u3088\u308a\u3001\u6a5f\u5bc6\u60c5\u5831\u304c\u6a5f\u5bc6\u306b\u4fdd\u6301\u3055\u308c\u3001\u6a29\u9650\u306e\u306a\u3044\u500b\u4eba\u306b\u306f\u8aad\u307f\u53d6\u308c\u306a\u304f\u306a\u308a\u307e\u3059\u3002<\/li>\n<li>\u8a8d\u8a3c: \u6697\u53f7\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3001\u901a\u4fe1\u306b\u95a2\u4e0e\u3059\u308b\u5f53\u4e8b\u8005\u306e\u8eab\u5143\u3092\u78ba\u8a8d\u3057\u3001\u306a\u308a\u3059\u307e\u3057\u653b\u6483\u3092\u9632\u6b62\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u6574\u5408\u6027: \u6697\u53f7\u5316\u30ad\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u304c\u7dad\u6301\u3055\u308c\u3001\u9001\u4fe1\u4e2d\u306b\u30c7\u30fc\u30bf\u304c\u5909\u66f4\u3055\u308c\u305f\u308a\u6539\u3056\u3093\u3055\u308c\u305f\u308a\u3057\u306a\u3044\u3053\u3068\u304c\u4fdd\u8a3c\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u5426\u8a8d\u4e0d\u53ef: \u975e\u5bfe\u79f0\u30ad\u30fc \u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u5426\u8a8d\u4e0d\u53ef\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u9001\u4fe1\u8005\u306f\u56fa\u6709\u306e\u79d8\u5bc6\u30ad\u30fc\u3067\u691c\u8a3c\u3067\u304d\u308b\u305f\u3081\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u9001\u4fe1\u3092\u5426\u5b9a\u3067\u304d\u307e\u305b\u3093\u3002<\/li>\n<\/ol>\n<h2>\u6697\u53f7\u9375\u306e\u7a2e\u985e<\/h2>\n<p>\u6697\u53f7\u5316\u30ad\u30fc\u306f\u3001\u305d\u306e\u7528\u9014\u3068\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u57fa\u3065\u3044\u3066\u5206\u985e\u3067\u304d\u307e\u3059\u3002\u4e3b\u306a\u7a2e\u985e\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ol>\n<li>\u77ed\u3044\u5bfe\u79f0\u30ad\u30fc: \u901a\u5e38 40 \uff5e 128 \u30d3\u30c3\u30c8\u3067\u3001\u8efd\u91cf\u306e\u6697\u53f7\u5316\u30bf\u30b9\u30af\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u9577\u3044\u5bfe\u79f0\u30ad\u30fc: 128 \uff5e 256 \u30d3\u30c3\u30c8\u306e\u7bc4\u56f2\u3067\u3001\u3088\u308a\u5f37\u529b\u306a\u6697\u53f7\u5316\u8981\u4ef6\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u516c\u958b\u9375: \u6697\u53f7\u5316\u306b\u4f7f\u7528\u3055\u308c\u3001\u4ed6\u306e\u30e6\u30fc\u30b6\u30fc\u3068\u81ea\u7531\u306b\u5171\u6709\u3055\u308c\u308b\u975e\u5bfe\u79f0\u9375\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u4e00\u90e8\u3002<\/li>\n<li>\u79d8\u5bc6\u9375: \u516c\u958b\u9375\u306e\u88dc\u5b8c\u90e8\u5206\u3067\u3042\u308a\u3001\u79d8\u5bc6\u306b\u4fdd\u6301\u3055\u308c\u3001\u5fa9\u53f7\u5316\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u30bb\u30c3\u30b7\u30e7\u30f3 \u30ad\u30fc: \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3059\u308b\u305f\u3081\u306b\u3001\u5358\u4e00\u306e\u901a\u4fe1\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u4f7f\u7528\u3055\u308c\u3001\u305d\u306e\u5f8c\u7834\u68c4\u3055\u308c\u308b\u4e00\u6642\u7684\u306a\u30ad\u30fc\u3002<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u306b\u3001\u4e3b\u306a\u6697\u53f7\u5316\u30ad\u30fc\u306e\u7a2e\u985e\u3092\u307e\u3068\u3081\u305f\u8868\u3092\u793a\u3057\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th>\u30ad\u30fc\u306e\u9577\u3055\uff08\u30d3\u30c3\u30c8\uff09<\/th>\n<th>\u4f7f\u7528\u6cd5<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u77ed\u3044\u5bfe\u79f0\u9375<\/td>\n<td>40\u304b\u3089128<\/td>\n<td>\u8efd\u91cf\u6697\u53f7\u5316<\/td>\n<\/tr>\n<tr>\n<td>\u9577\u3044\u5bfe\u79f0\u9375<\/td>\n<td>128\u304b\u3089256<\/td>\n<td>\u5805\u7262\u306a\u6697\u53f7\u5316<\/td>\n<\/tr>\n<tr>\n<td>\u516c\u958b\u9375<\/td>\n<td>\u5909\u6570<\/td>\n<td>\u6697\u53f7\u5316\u3001\u9375\u4ea4\u63db<\/td>\n<\/tr>\n<tr>\n<td>\u79d8\u5bc6\u9375<\/td>\n<td>\u5909\u6570<\/td>\n<td>\u5fa9\u53f7\u5316\u3001\u30c7\u30b8\u30bf\u30eb\u7f72\u540d<\/td>\n<\/tr>\n<tr>\n<td>\u30bb\u30c3\u30b7\u30e7\u30f3\u30ad\u30fc<\/td>\n<td>\u5909\u6570<\/td>\n<td>\u5358\u4e00\u30bb\u30c3\u30b7\u30e7\u30f3\u7528\u306e\u4e00\u6642\u6697\u53f7\u5316\u30ad\u30fc<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u6697\u53f7\u9375\u306e\u4f7f\u7528\u65b9\u6cd5\u3001\u554f\u984c\u70b9\u3001\u89e3\u6c7a\u7b56<\/h2>\n<p>\u6697\u53f7\u9375\u306e\u4f7f\u7528\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3055\u307e\u3056\u307e\u306a\u9818\u57df\u3067\u5e83\u304f\u666e\u53ca\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u5b89\u5168\u306a\u901a\u4fe1: \u6697\u53f7\u5316\u30ad\u30fc\u306b\u3088\u308a\u3001\u5f53\u4e8b\u8005\u9593\u306e\u5b89\u5168\u306a\u901a\u4fe1\u304c\u78ba\u4fdd\u3055\u308c\u3001\u9001\u4fe1\u4e2d\u306e\u6a5f\u5bc6\u30c7\u30fc\u30bf\u304c\u4fdd\u8b77\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u30c7\u30fc\u30bf\u6697\u53f7\u5316: \u4fdd\u5b58\u6642\u307e\u305f\u306f\u8ee2\u9001\u4e2d\u306e\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u304e\u3001\u30c7\u30fc\u30bf\u4fb5\u5bb3\u306e\u30ea\u30b9\u30af\u3092\u8efd\u6e1b\u3057\u307e\u3059\u3002<\/li>\n<li>\u30c7\u30b8\u30bf\u30eb\u7f72\u540d: \u6697\u53f7\u5316\u30ad\u30fc\u306b\u3088\u308a\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306e\u4f5c\u6210\u304c\u5bb9\u6613\u306b\u306a\u308a\u3001\u30c7\u30b8\u30bf\u30eb\u6587\u66f8\u306e\u8a8d\u8a3c\u3068\u5426\u8a8d\u9632\u6b62\u304c\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/li>\n<li>SSL\/TLS \u6697\u53f7\u5316: Web \u30b5\u30a4\u30c8\u306f SSL\/TLS \u8a3c\u660e\u66f8\u306e\u6697\u53f7\u5316\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3001Web \u30b5\u30fc\u30d0\u30fc\u3068\u30e6\u30fc\u30b6\u30fc\u9593\u306e\u63a5\u7d9a\u3092\u4fdd\u8b77\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u305f\u3060\u3057\u3001\u6697\u53f7\u9375\u306e\u4f7f\u7528\u306b\u306f\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u30ad\u30fc\u7ba1\u7406: \u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u6697\u53f7\u5316\u30ad\u30fc\u3092\u5b89\u5168\u306b\u4fdd\u5b58\u304a\u3088\u3073\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/li>\n<li>\u30ad\u30fc\u914d\u5e03: \u7279\u306b\u5927\u898f\u6a21\u30b7\u30b9\u30c6\u30e0\u3067\u306f\u3001\u95a2\u4fc2\u8005\u9593\u3067\u306e\u5b89\u5168\u306a\u30ad\u30fc\u4ea4\u63db\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u304c\u8907\u96d1\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<li>\u30ad\u30fc \u30b5\u30a4\u30ba: \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u3068\u308b\u306b\u306f\u3001\u9069\u5207\u306a\u30ad\u30fc\u306e\u9577\u3055\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3059\u3002<\/li>\n<\/ol>\n<p>\u3053\u308c\u3089\u306e\u8ab2\u984c\u306b\u5bfe\u51e6\u3059\u308b\u305f\u3081\u306b\u3001\u7d44\u7e54\u306f\u5805\u7262\u306a\u30ad\u30fc\u7ba1\u7406\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u5b9f\u88c5\u3057\u3001\u5b89\u5168\u306a\u30ad\u30fc\u306e\u4fdd\u5b58\u306b\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2 \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30e2\u30b8\u30e5\u30fc\u30eb (HSM) \u3092\u4f7f\u7528\u3057\u3001\u5b89\u5168\u306a\u30ad\u30fc\u306e\u30cd\u30b4\u30b7\u30a8\u30fc\u30b7\u30e7\u30f3\u306b Diffie-Hellman \u306a\u3069\u306e\u30ad\u30fc\u4ea4\u63db\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u63a1\u7528\u3057\u307e\u3059\u3002<\/p>\n<h2>\u4e3b\u306a\u7279\u5fb4\u3068\u6bd4\u8f03<\/h2>\n<p>\u6697\u53f7\u30ad\u30fc\u3092\u3088\u308a\u3088\u304f\u7406\u89e3\u3059\u308b\u305f\u3081\u306b\u3001\u95a2\u9023\u3059\u308b\u7528\u8a9e\u3068\u6bd4\u8f03\u3057\u3066\u307f\u307e\u3057\u3087\u3046\u3002<\/p>\n<ol>\n<li>\n<p>\u6697\u53f7\u5316\u30ad\u30fc\u3068\u30d1\u30b9\u30ef\u30fc\u30c9:<\/p>\n<ul>\n<li>\u6697\u53f7\u5316\u30ad\u30fc\u306f\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u306b\u4f7f\u7528\u3055\u308c\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u306f\u8a8d\u8a3c\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u30ad\u30fc\u306f\u4e00\u822c\u306b\u30d1\u30b9\u30ef\u30fc\u30c9\u3088\u308a\u3082\u9577\u304f\u3066\u8907\u96d1\u306a\u306e\u3067\u3001\u6697\u53f7\u5316\u306e\u76ee\u7684\u306b\u304a\u3044\u3066\u306f\u3088\u308a\u5b89\u5168\u3067\u3059\u3002<\/li>\n<li>\u30d1\u30b9\u30ef\u30fc\u30c9\u306f\u4eba\u9593\u304c\u8a18\u61b6\u3067\u304d\u307e\u3059\u304c\u3001\u30ad\u30fc\u306f\u901a\u5e38\u3001\u6a5f\u68b0\u306b\u3088\u3063\u3066\u7ba1\u7406\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u6697\u53f7\u30ad\u30fc\u3068\u30cf\u30c3\u30b7\u30e5:<\/p>\n<ul>\n<li>\u6697\u53f7\u30ad\u30fc\u306f\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u306b\u4f7f\u7528\u3055\u308c\u3001\u30cf\u30c3\u30b7\u30e5\u306f\u30c7\u30fc\u30bf\u306e\u6574\u5408\u6027\u3068\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306b\u4f7f\u7528\u3055\u308c\u308b\u4e00\u65b9\u5411\u95a2\u6570\u3067\u3059\u3002<\/li>\n<li>\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u305f\u6697\u53f7\u5316\u3067\u306f\u53ef\u9006\u7684\u306a\u6697\u53f7\u6587\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u304c\u3001\u30cf\u30c3\u30b7\u30e5\u5316\u3067\u306f\u4e0d\u53ef\u9006\u306a\u51fa\u529b (\u30cf\u30c3\u30b7\u30e5\u5024) \u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u6697\u53f7\u30ad\u30fc\u3068\u8a3c\u660e\u66f8:<\/p>\n<ul>\n<li>\u6697\u53f7\u30ad\u30fc\u306f\u3001\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u306b\u4f7f\u7528\u3055\u308c\u308b\u30b3\u30a2\u30b3\u30f3\u30dd\u30fc\u30cd\u30f3\u30c8\u3067\u3059\u3002<\/li>\n<li>\u8a3c\u660e\u66f8\u306f\u3001\u8a8d\u8a3c\u3084\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306b\u4f7f\u7528\u3055\u308c\u308b\u516c\u958b\u9375\u3068\u6240\u6709\u8005\u306b\u95a2\u3059\u308b\u8ffd\u52a0\u60c5\u5831\u3092\u542b\u3080\u30c7\u30b8\u30bf\u30eb\u6587\u66f8\u3067\u3059\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2>\u5c55\u671b\u3068\u5c06\u6765\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc<\/h2>\n<p>\u6697\u53f7\u5316\u306e\u5206\u91ce\u306f\u3001\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u9032\u6b69\u3068\u65b0\u305f\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u8105\u5a01\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3001\u7d99\u7d9a\u7684\u306b\u9032\u5316\u3057\u3066\u3044\u307e\u3059\u3002\u6697\u53f7\u5316\u30ad\u30fc\u306b\u95a2\u3059\u308b\u5c06\u6765\u306e\u5c55\u671b\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u91cf\u5b50\u8010\u6027\u6697\u53f7: \u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304b\u3089\u306e\u653b\u6483\u306b\u8010\u6027\u306e\u3042\u308b\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u30ad\u30fc\u306e\u958b\u767a\u3002<\/li>\n<li>\u30dd\u30b9\u30c8\u91cf\u5b50\u6697\u53f7: \u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u5b58\u5728\u3057\u3066\u3082\u5b89\u5168\u6027\u3092\u7dad\u6301\u3059\u308b\u65b0\u3057\u3044\u6697\u53f7\u5316\u65b9\u5f0f\u3092\u7814\u7a76\u3057\u307e\u3059\u3002<\/li>\n<li>\u6e96\u540c\u578b\u6697\u53f7\u5316: \u6e96\u540c\u578b\u6697\u53f7\u5316\u3092\u9032\u5316\u3055\u305b\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u30c7\u30fc\u30bf\u3092\u5fa9\u53f7\u5316\u305b\u305a\u306b\u8a08\u7b97\u3067\u304d\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n<li>\u30de\u30eb\u30c1\u30d1\u30fc\u30c6\u30a3\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0: \u6a5f\u5bc6\u60c5\u5831\u3092\u5171\u6709\u305b\u305a\u306b\u5171\u540c\u30c7\u30fc\u30bf\u5206\u6790\u3092\u53ef\u80fd\u306b\u3059\u308b\u305f\u3081\u306b\u3001\u5b89\u5168\u306a\u30de\u30eb\u30c1\u30d1\u30fc\u30c6\u30a3\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u6280\u8853\u3092\u5f37\u5316\u3057\u307e\u3059\u3002<\/li>\n<\/ol>\n<h2>\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc\u3068\u6697\u53f7\u9375<\/h2>\n<p>OneProxy (oneproxy.pro) \u304c\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306a\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u6697\u53f7\u5316\u30ad\u30fc\u3092\u6d3b\u7528\u3067\u304d\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u5b89\u5168\u306a\u901a\u4fe1: \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u6697\u53f7\u5316\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3068\u30d7\u30ed\u30ad\u30b7\u9593\u306e\u901a\u4fe1\u30c1\u30e3\u30cd\u30eb\u3092\u4fdd\u8b77\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>SSL\/TLS \u7d42\u4e86: \u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001SSL \u8a3c\u660e\u66f8\u306e\u6697\u53f7\u5316\u30ad\u30fc\u3092\u4f7f\u7528\u3057\u3066\u3001\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e SSL\/TLS \u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u3092\u51e6\u7406\u3067\u304d\u307e\u3059\u3002<\/li>\n<li>\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u8a8d\u8a3c: \u30d7\u30ed\u30ad\u30b7 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href=\"https:\/\/owasp.org\/www-project-cheat-sheets\/cheatsheets\/Cryptographic_Storage_Cheat_Sheet\" target=\"_new\" rel=\"noopener nofollow\">OWASP \u6697\u53f7\u5316\u30b9\u30c8\u30ec\u30fc\u30b8 \u30c1\u30fc\u30c8\u30b7\u30fc\u30c8<\/a><\/li>\n<\/ol>\n<p>\u7d50\u8ad6\u3068\u3057\u3066\u3001\u6697\u53f7\u9375\u306f\u73fe\u4ee3\u306e\u6697\u53f7\u5316\u306e\u57fa\u790e\u3067\u3042\u308a\u3001\u30c7\u30b8\u30bf\u30eb\u74b0\u5883\u5168\u4f53\u3067\u5b89\u5168\u306a\u901a\u4fe1\u3068\u30c7\u30fc\u30bf\u4fdd\u8b77\u3092\u53ef\u80fd\u306b\u3057\u307e\u3059\u3002\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u304c\u9032\u6b69\u3059\u308b\u306b\u3064\u308c\u3001\u6697\u53f7\u5316\u65b9\u6cd5\u3068\u9375\u7ba1\u7406\u65b9\u6cd5\u306e\u7d99\u7d9a\u7684\u306a\u958b\u767a\u306f\u3001\u6a5f\u5bc6\u60c5\u5831\u3092\u4fdd\u8b77\u3057\u3001\u500b\u4eba\u3068\u7d44\u7e54\u306e\u30c7\u30b8\u30bf\u30eb \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u91cd\u8981\u3067\u3042\u308a\u7d9a\u3051\u308b\u3067\u3057\u3087\u3046\u3002<\/p>","protected":false},"featured_media":476498,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-476497","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Cryptographic Key: A Comprehensive Guide<\/mark>","faq_items":[{"question":"What is a cryptographic key?","answer":"<p>A cryptographic key is a crucial piece of information used in modern encryption and decryption processes to secure data and communications over the internet. It controls the mathematical transformation of plaintext data into ciphertext during encryption and vice versa during decryption, ensuring that unauthorized parties cannot understand the encrypted data.<\/p>"},{"question":"How did cryptographic keys originate?","answer":"<p>The origins of cryptography can be traced back to ancient civilizations, where various methods were used to conceal sensitive messages during times of war and espionage. One of the earliest known instances is Julius Caesar's use of a simple substitution cipher. Throughout history, cryptographic techniques evolved, leading to the modern-day use of cryptographic keys.<\/p>"},{"question":"How does a cryptographic key work?","answer":"<p>A cryptographic key operates on the principle of using mathematical algorithms to convert plain text into an unintelligible form (ciphertext) during encryption and vice versa during decryption. The length of the key determines its strength, with longer keys providing more security against decryption attempts.<\/p>"},{"question":"What are the main types of cryptographic keys?","answer":"<p>There are several types of cryptographic keys, including:<\/p><ul><li>Short Symmetric Key (40 to 128 bits) for lightweight encryption.<\/li><li>Long Symmetric Key (128 to 256 bits) for robust encryption.<\/li><li>Public Key for encryption and freely sharing with others.<\/li><li>Private Key, kept secret, used for decryption.<\/li><li>Session Key, a temporary key for a single communication session.<\/li><\/ul>"},{"question":"How are cryptographic keys used?","answer":"<p>Cryptographic keys are used in various ways, including:<\/p><ul><li>Secure Communication between parties, protecting data during transmission.<\/li><li>Data Encryption at rest or during transmission to prevent unauthorized access.<\/li><li>Digital Signatures for authentication and non-repudiation of digital documents.<\/li><li>SSL\/TLS Encryption for securing connections between web servers and users.<\/li><\/ul>"},{"question":"What challenges are associated with cryptographic keys?","answer":"<p>Using cryptographic keys can present some challenges, such as:<\/p><ul><li>Key Management to securely store and manage keys.<\/li><li>Key Distribution to securely exchange keys between parties.<\/li><li>Balancing Key Size for optimal security and performance.<\/li><\/ul>"},{"question":"What are the future perspectives for cryptographic keys?","answer":"<p>The future of cryptographic keys may include:<\/p><ul><li>Quantum-Resistant Cryptography to withstand attacks from quantum computers.<\/li><li>Post-Quantum Cryptography for security against quantum threats.<\/li><li>Homomorphic Encryption for computation on encrypted data.<\/li><li>Multi-Party Computation for secure joint data analysis.<\/li><\/ul>"},{"question":"How do proxy servers relate to cryptographic keys?","answer":"<p>Proxy servers can use cryptographic keys in various ways, such as:<\/p><ul><li>Ensuring Secure Communication between clients and the proxy.<\/li><li>Handling SSL\/TLS Termination for clients with cryptographic keys from SSL certificates.<\/li><li>Implementing Client Authentication using cryptographic keys for access control.<\/li><\/ul>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/476497","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\/476497\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/476498"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=476497"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}