{"id":477430,"date":"2023-08-09T09:14:50","date_gmt":"2023-08-09T09:14:50","guid":{"rendered":""},"modified":"2023-09-05T11:14:41","modified_gmt":"2023-09-05T11:14:41","slug":"hash-function","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/jp\/wiki\/hash-function\/","title":{"rendered":"\u30cf\u30c3\u30b7\u30e5\u95a2\u6570"},"content":{"rendered":"<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u3001\u4efb\u610f\u306e\u30b5\u30a4\u30ba\u306e\u30c7\u30fc\u30bf\u3092\u56fa\u5b9a\u30b5\u30a4\u30ba\u306e\u5024\u306b\u30de\u30c3\u30d4\u30f3\u30b0\u3059\u308b\u305f\u3081\u306b\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30b5\u30a4\u30a8\u30f3\u30b9\u3067\u4f7f\u7528\u3055\u308c\u308b\u72ec\u81ea\u306e\u30bf\u30a4\u30d7\u306e\u95a2\u6570\u3067\u3059\u3002\u30c7\u30fc\u30bf\u306e\u53d6\u5f97\u3001\u6697\u53f7\u5316\u3001\u30c1\u30a7\u30c3\u30af\u30b5\u30e0\u3001\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u9818\u57df\u3067\u4e0d\u53ef\u6b20\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u672c\u8cea\u7684\u306b\u73fe\u4ee3\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf \u30b5\u30a4\u30a8\u30f3\u30b9\u3068\u30b5\u30a4\u30d0\u30fc \u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u57fa\u790e\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u9032\u5316<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u6982\u5ff5\u306f\u30011950 \u5e74\u4ee3\u5f8c\u534a\u306b\u60c5\u5831\u691c\u7d22\u306e\u5206\u91ce\u3067\u521d\u3081\u3066\u767b\u5834\u3057\u307e\u3057\u305f\u3002IBM \u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u79d1\u5b66\u8005\u3067\u3042\u308b Hans Peter Luhn \u304c\u3001\u30c7\u30fc\u30bf\u3078\u306e\u9ad8\u901f\u30a2\u30af\u30bb\u30b9\u306e\u305f\u3081\u306b\u30cf\u30c3\u30b7\u30e5\u3092\u5c0e\u5165\u3057\u307e\u3057\u305f\u3002\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u30ad\u30fc\u3092\u5bfe\u5fdc\u3059\u308b\u30ec\u30b3\u30fc\u30c9\u304c\u898b\u3064\u304b\u308b\u30a2\u30c9\u30ec\u30b9\u306b\u5909\u63db\u3059\u308b\u3068\u3044\u3046\u30a2\u30a4\u30c7\u30a2\u3067\u3057\u305f\u3002<\/p>\n<p>\u305d\u306e\u5f8c\u6570\u5341\u5e74\u306b\u308f\u305f\u308a\u3001\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u6709\u7528\u6027\u306f\u5358\u306a\u308b\u60c5\u5831\u691c\u7d22\u306e\u7bc4\u56f2\u3092\u8d85\u3048\u3066\u62e1\u5927\u3057\u307e\u3057\u305f\u30021970 \u5e74\u4ee3\u306b\u306f\u3001\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u304c\u6697\u53f7\u5316\u306e\u5206\u91ce\u3067\u305d\u306e\u5730\u4f4d\u3092\u78ba\u7acb\u3057\u3001\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u6700\u9069\u306a\u7279\u5b9a\u306e\u7279\u6027\u3092\u6301\u3064\u7279\u6b8a\u306a\u7a2e\u985e\u306e\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3067\u3042\u308b\u6697\u53f7\u5316\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u304c\u4f5c\u6210\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3092\u6df1\u304f\u6398\u308a\u4e0b\u3052\u308b<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u3001\u5165\u529b (\u307e\u305f\u306f\u300c\u30e1\u30c3\u30bb\u30fc\u30b8\u300d) \u3092\u53d7\u3051\u53d6\u308a\u3001\u56fa\u5b9a\u30b5\u30a4\u30ba\u306e\u30d0\u30a4\u30c8\u6587\u5b57\u5217\u3092\u8fd4\u3059\u3053\u3068\u306b\u3088\u3063\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002\u51fa\u529b\u306f\u901a\u5e38\u3001\u5404\u5165\u529b\u306b\u56fa\u6709\u306e\u300c\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u300d\u3067\u3059\u3002\u5165\u529b\u306b\u308f\u305a\u304b\u306a\u5909\u66f4\u304c\u52a0\u3048\u3089\u308c\u305f\u3060\u3051\u3067\u3082\u3001\u5927\u5e45\u306b\u7570\u306a\u308b\u51fa\u529b\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/p>\n<p>\u91cd\u8981\u306a\u306e\u306f\u3001\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u6c7a\u5b9a\u8ad6\u7684\u3067\u3042\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u3064\u307e\u308a\u3001\u540c\u3058\u5165\u529b\u304b\u3089\u306f\u5e38\u306b\u540c\u3058\u51fa\u529b\u304c\u751f\u6210\u3055\u308c\u308b\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u3002\u305d\u306e\u4ed6\u306e\u91cd\u8981\u306a\u7279\u6027\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u539f\u50cf\u62b5\u6297:<\/strong> \u51fa\u529b\u30cf\u30c3\u30b7\u30e5\u306e\u307f\u3067\u5143\u306e\u5165\u529b\u3092\u53d6\u5f97\u3059\u308b\u3053\u3068\u306f\u8a08\u7b97\u4e0a\u4e0d\u53ef\u80fd\u3067\u3059\u3002<\/li>\n<li><strong>\u7b2c\u4e8c\u539f\u50cf\u62b5\u6297:<\/strong> \u4e0e\u3048\u3089\u308c\u305f\u6700\u521d\u306e\u5165\u529b\u3068\u540c\u3058\u51fa\u529b\u306b\u30cf\u30c3\u30b7\u30e5\u3055\u308c\u308b 2 \u756a\u76ee\u306e\u5165\u529b\u3092\u898b\u3064\u3051\u308b\u3053\u3068\u306f\u307b\u307c\u4e0d\u53ef\u80fd\u3067\u3059\u3002<\/li>\n<li><strong>\u885d\u7a81\u8010\u6027:<\/strong> \u540c\u3058\u51fa\u529b\u306b\u30cf\u30c3\u30b7\u30e5\u3055\u308c\u308b 2 \u3064\u306e\u7570\u306a\u308b\u5165\u529b\u3092\u898b\u3064\u3051\u308b\u306e\u306f\u96e3\u3057\u3044\u306f\u305a\u3067\u3059\u3002<\/li>\n<\/ul>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u4ed5\u7d44\u307f<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u5185\u90e8\u52d5\u4f5c\u306f\u3001\u4f7f\u7528\u3055\u308c\u308b\u7279\u5b9a\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u57fa\u672c\u7684\u306a\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u3055\u307e\u3056\u307e\u306a\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u9593\u3067\u4e00\u8cab\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ol>\n<li>\u5165\u529b\u30e1\u30c3\u30bb\u30fc\u30b8\u306f\u56fa\u5b9a\u30b5\u30a4\u30ba\u306e\u30c1\u30e3\u30f3\u30af (\u30d6\u30ed\u30c3\u30af) \u5358\u4f4d\u3067\u51e6\u7406\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u5404\u30d6\u30ed\u30c3\u30af\u306f\u3001\u5165\u529b\u3092\u5909\u63db\u3059\u308b\u8907\u96d1\u306a\u6570\u5b66\u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u51e6\u7406\u3055\u308c\u307e\u3059\u3002<\/li>\n<li>\u5404\u30d6\u30ed\u30c3\u30af\u304b\u3089\u306e\u51fa\u529b\u304c\u7d50\u5408\u3055\u308c\u3001\u6700\u7d42\u7684\u306a\u30cf\u30c3\u30b7\u30e5\u5024\u304c\u4f5c\u6210\u3055\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n<p>\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306b\u3088\u308a\u3001\u5165\u529b\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u5c0f\u3055\u306a\u5909\u66f4\u304c\u3042\u3063\u3066\u3082\u3001\u6700\u7d42\u7684\u306a\u30cf\u30c3\u30b7\u30e5\u306b\u5927\u304d\u306a\u9055\u3044\u304c\u751f\u3058\u308b\u3088\u3046\u306b\u306a\u308a\u3001\u653b\u6483\u306b\u5bfe\u3059\u308b\u5f37\u529b\u306a\u8010\u6027\u304c\u5b9f\u73fe\u3057\u307e\u3059\u3002<\/p>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u4e3b\u306a\u6a5f\u80fd<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u4e3b\u306a\u6a5f\u80fd\u306f\u6b21\u306e\u3068\u304a\u308a\u3067\u3059\u3002<\/p>\n<ul>\n<li><strong>\u6c7a\u5b9a\u8ad6:<\/strong> \u540c\u3058\u5165\u529b\u3067\u306f\u5e38\u306b\u540c\u3058\u51fa\u529b\u304c\u751f\u6210\u3055\u308c\u307e\u3059\u3002<\/li>\n<li><strong>\u56fa\u5b9a\u51fa\u529b\u9577:<\/strong> \u5165\u529b\u306e\u30b5\u30a4\u30ba\u306b\u95a2\u4fc2\u306a\u304f\u3001\u51fa\u529b\u30cf\u30c3\u30b7\u30e5\u306e\u9577\u3055\u306f\u4e00\u5b9a\u306e\u307e\u307e\u3067\u3059\u3002<\/li>\n<li><strong>\u52b9\u7387\uff1a<\/strong> \u5165\u529b\u306e\u30cf\u30c3\u30b7\u30e5\u3092\u8a08\u7b97\u3059\u308b\u306e\u306b\u304b\u304b\u308b\u6642\u9593\u306f\u3001\u5165\u529b\u306e\u30b5\u30a4\u30ba\u306b\u6bd4\u4f8b\u3057\u307e\u3059\u3002<\/li>\n<li><strong>\u539f\u50cf\u62b5\u6297:<\/strong> \u51fa\u529b\u30cf\u30c3\u30b7\u30e5\u304b\u3089\u5143\u306e\u5165\u529b\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u306f\u307b\u307c\u4e0d\u53ef\u80fd\u3067\u3059\u3002<\/li>\n<li><strong>\u96ea\u5d29\u52b9\u679c:<\/strong> \u5165\u529b\u306e\u5c0f\u3055\u306a\u5909\u5316\u304c\u51fa\u529b\u306b\u5927\u304d\u306a\u5909\u5316\u3092\u3082\u305f\u3089\u3057\u307e\u3059\u3002<\/li>\n<\/ul>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u7a2e\u985e<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306b\u306f\u3001\u6697\u53f7\u5316\u578b\u3084\u975e\u6697\u53f7\u5316\u578b\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u7a2e\u985e\u304c\u3042\u308a\u307e\u3059\u3002\u6b21\u306e\u8868\u306b\u3001\u6ce8\u76ee\u3059\u3079\u304d\u4f8b\u3092\u3044\u304f\u3064\u304b\u793a\u3057\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30bf\u30a4\u30d7<\/th>\n<th style=\"text-align: center;\">\u6697\u53f7<\/th>\n<th>\u8aac\u660e<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>MD5<\/td>\n<td style=\"text-align: center;\">\u306f\u3044<\/td>\n<td>128\u30d3\u30c3\u30c8\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u751f\u6210\u3057\u307e\u3059\u3002\u901a\u5e38\u306f32\u6587\u5b57\u306e16\u9032\u6570\u3068\u3057\u3066\u8868\u3055\u308c\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>SHA-1<\/td>\n<td style=\"text-align: center;\">\u306f\u3044<\/td>\n<td>\u885d\u7a81\u8010\u6027\u306e\u70b9\u3067\u306f\u5f31\u3044\u3068\u8003\u3048\u3089\u308c\u308b160\u30d3\u30c3\u30c8\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u751f\u6210\u3057\u307e\u3059\u3002<\/td>\n<\/tr>\n<tr>\n<td>SHA-2<\/td>\n<td style=\"text-align: center;\">\u306f\u3044<\/td>\n<td>SHA-1 \u306e\u6539\u826f\u7248\u3002\u30cf\u30c3\u30b7\u30e5\u95a2\u6570 SHA-224\u3001SHA-256\u3001SHA-384\u3001SHA-512\u3001SHA-512\/224\u3001SHA-512\/256 \u3092\u542b\u3080\u3002<\/td>\n<\/tr>\n<tr>\n<td>SHA-3<\/td>\n<td style=\"text-align: center;\">\u306f\u3044<\/td>\n<td>SHA-2\u3088\u308a\u3082\u52b9\u7387\u7684\u306a\u30bb\u30ad\u30e5\u30a2\u30cf\u30c3\u30b7\u30e5\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u30d5\u30a1\u30df\u30ea\u30fc\u306e\u6700\u65b0\u30e1\u30f3\u30d0\u30fc<\/td>\n<\/tr>\n<tr>\n<td>\u30de\u30fc\u30de\u30fc\u30cf\u30c3\u30b7\u30e5<\/td>\n<td style=\"text-align: center;\">\u3044\u3044\u3048<\/td>\n<td>\u30c7\u30fc\u30bf\u51e6\u7406\u30bf\u30b9\u30af\u3067\u4f7f\u7528\u3055\u308c\u308b\u3001\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306b\u91cd\u70b9\u3092\u7f6e\u3044\u305f\u975e\u6697\u53f7\u5316\u30cf\u30c3\u30b7\u30e5\u95a2\u6570<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u5fdc\u7528\u3068\u8ab2\u984c<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u3001\u30c7\u30fc\u30bf\u691c\u7d22\u3001\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u3001\u30c7\u30fc\u30bf\u6574\u5408\u6027\u30c1\u30a7\u30c3\u30af\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u4fdd\u5b58\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u5206\u91ce\u3067\u5e83\u304f\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u4fbf\u5229\u3067\u3059\u304c\u3001\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u3082\u4f34\u3044\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u30cf\u30c3\u30b7\u30e5\u885d\u7a81\u306e\u5f71\u97ff\u3092\u53d7\u3051\u3084\u3059\u304f\u30012 \u3064\u306e\u7570\u306a\u308b\u5165\u529b\u304c\u540c\u3058\u30cf\u30c3\u30b7\u30e5\u51fa\u529b\u3092\u751f\u6210\u3059\u308b\u305f\u3081\u3001\u6697\u53f7\u5316\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u61f8\u5ff5\u304c\u751f\u3058\u308b\u53ef\u80fd\u6027\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n<p>\u305f\u3060\u3057\u3001\u3053\u308c\u3089\u306e\u554f\u984c\u306f\u3055\u307e\u3056\u307e\u306a\u65b9\u6cd5\u3067\u8efd\u6e1b\u3067\u304d\u307e\u3059\u3002\u305f\u3068\u3048\u3070\u3001\u51fa\u529b\u30b5\u30a4\u30ba\u304c\u5927\u304d\u3044\u6700\u65b0\u306e\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u885d\u7a81\u306e\u53ef\u80fd\u6027\u3092\u6e1b\u3089\u3059\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u30bd\u30eb\u30c8\uff08\u5165\u529b\u306b\u30e9\u30f3\u30c0\u30e0\u306a\u30c7\u30fc\u30bf\u3092\u8ffd\u52a0\u3059\u308b\uff09\u306a\u3069\u306e\u624b\u6cd5\u3092\u4f7f\u7528\u3059\u308b\u3068\u3001\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u30cf\u30c3\u30b7\u30e5\u3059\u308b\u969b\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3067\u304d\u307e\u3059\u3002<\/p>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u6bd4\u8f03\u3068\u7279\u5fb4<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u6bd4\u8f03\u306f\u3001\u30cf\u30c3\u30b7\u30e5\u306e\u9577\u3055\u3001\u8a08\u7b97\u52b9\u7387\u3001\u885d\u7a81\u8010\u6027\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 \u30ec\u30d9\u30eb\u306a\u3069\u306e\u3044\u304f\u3064\u304b\u306e\u8981\u7d20\u306b\u57fa\u3065\u3044\u3066\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<table>\n<thead>\n<tr>\n<th>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570<\/th>\n<th style=\"text-align: center;\">\u30cf\u30c3\u30b7\u30e5\u9577\uff08\u30d3\u30c3\u30c8\uff09<\/th>\n<th>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>MD5<\/td>\n<td style=\"text-align: center;\">128<\/td>\n<td>\u4f4e\u3044<\/td>\n<\/tr>\n<tr>\n<td>SHA-1<\/td>\n<td style=\"text-align: center;\">160<\/td>\n<td>\u4e2d\u304f\u3089\u3044<\/td>\n<\/tr>\n<tr>\n<td>SHA-256<\/td>\n<td style=\"text-align: center;\">256<\/td>\n<td>\u9ad8\u3044<\/td>\n<\/tr>\n<tr>\n<td>\u30de\u30fc\u30de\u30fc\u30cf\u30c3\u30b7\u30e5<\/td>\n<td style=\"text-align: center;\">32, 128<\/td>\n<td>\u4f4e\u3044<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u5c06\u6765<\/h2>\n<p>\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u767b\u5834\u306b\u3088\u308a\u3001\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u65b0\u305f\u306a\u8ab2\u984c\u306b\u76f4\u9762\u3057\u3066\u3044\u307e\u3059\u3002\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f\u3001\u73fe\u5728\u5b89\u5168\u306a\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u591a\u304f\u3092\u7834\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u304b\u3089\u3067\u3059\u3002\u3053\u306e\u305f\u3081\u3001\u5f93\u6765\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3068\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u4e21\u65b9\u306b\u5bfe\u3057\u3066\u5b89\u5168\u306a\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u958b\u767a\u3092\u76ee\u6307\u3057\u3066\u3001\u30dd\u30b9\u30c8\u91cf\u5b50\u6697\u53f7\u306e\u7814\u7a76\u304c\u9032\u3081\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<h2>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3068\u30d7\u30ed\u30ad\u30b7\u30b5\u30fc\u30d0\u30fc<\/h2>\n<p>OneProxy \u304c\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306a\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u306f\u3001\u8ca0\u8377\u5206\u6563 (\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u307e\u305f\u306f\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3 \u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u8907\u6570\u306e\u30b5\u30fc\u30d0\u30fc\u306b\u5206\u6563\u3059\u308b) \u3084\u30c7\u30fc\u30bf\u6574\u5408\u6027\u30c1\u30a7\u30c3\u30af\u306a\u3069\u3001\u3055\u307e\u3056\u307e\u306a\u76ee\u7684\u3067\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3092\u5229\u7528\u3067\u304d\u307e\u3059\u3002\u3055\u3089\u306b\u3001\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u3001\u5b89\u5168\u306a\u30cf\u30c3\u30b7\u30e5\u30d9\u30fc\u30b9\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u8a8d\u8a3c\u30b3\u30fc\u30c9\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u3067\u3001\u30d7\u30ed\u30ad\u30b7 \u30b5\u30fc\u30d0\u30fc\u3068\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u9593\u306e\u901a\u4fe1\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n<h2>\u95a2\u9023\u30ea\u30f3\u30af<\/h2>\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u6b21\u306e\u30ea\u30bd\u30fc\u30b9\u304c\u5f79\u7acb\u3061\u307e\u3059\u3002<\/p>\n<ol>\n<li><a href=\"https:\/\/en.wikipedia.org\/wiki\/Hash_function\" target=\"_new\" rel=\"noopener nofollow\">\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306b\u95a2\u3059\u308bWikipedia\u306e\u8a18\u4e8b<\/a><\/li>\n<li><a href=\"https:\/\/www.khanacademy.org\/computing\/computer-science\/cryptography\" target=\"_new\" rel=\"noopener nofollow\">\u30ab\u30fc\u30f3\u30a2\u30ab\u30c7\u30df\u30fc\u306e\u6697\u53f7\u5316\u30b3\u30fc\u30b9<\/a><\/li>\n<li><a href=\"https:\/\/www.coursera.org\/learn\/crypto\" target=\"_new\" rel=\"noopener nofollow\">\u6697\u53f7\u5316\u306b\u95a2\u3059\u308b Coursera \u30b3\u30fc\u30b9<\/a><\/li>\n<li><a href=\"https:\/\/www.geeksforgeeks.org\/hashing-data-structure\/\" target=\"_new\" rel=\"noopener nofollow\">\u30cf\u30c3\u30b7\u30e5\u5165\u9580<\/a> GeeksforGeeks\u3067<\/li>\n<li><a href=\"https:\/\/csrc.nist.gov\/projects\/hash-functions\" target=\"_new\" rel=\"noopener nofollow\">NIST\u306e\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306b\u95a2\u3059\u308b\u30dd\u30ea\u30b7\u30fc<\/a><\/li>\n<\/ol>","protected":false},"featured_media":468520,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-477430","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Hash Function: The Foundation of Data Integrity and Security<\/mark>","faq_items":[{"question":"What is a hash function?","answer":"<p>A hash function is a special type of function used in computer science that takes an input (or 'message') and returns a fixed-size string of bytes, typically a 'digest' that is unique to each unique input. Hash functions are widely used in various domains, including data retrieval, encryption, checksums, and digital signatures.<\/p>"},{"question":"Who first introduced the concept of hash functions?","answer":"<p>The concept of hash functions was first introduced by Hans Peter Luhn, a computer scientist at IBM, in the late 1950s. He proposed hashing for rapid access to data in the field of information retrieval.<\/p>"},{"question":"What are the main features of a hash function?","answer":"<p>Key features of hash functions include determinism (the same input will always produce the same output), fixed output length, efficiency (time taken to compute the hash is proportional to the input size), preimage resistance (it's near-impossible to generate the original input from its output hash), and the avalanche effect (small changes in the input result in drastic changes in the output).<\/p>"},{"question":"Can you name some types of hash functions?","answer":"<p>There are several types of hash functions, including both cryptographic and non-cryptographic ones. Some notable examples are MD5, SHA-1, SHA-2, SHA-3, and MurmurHash.<\/p>"},{"question":"What are the applications and challenges of hash functions?","answer":"<p>Hash functions have various applications in fields like data retrieval, digital signatures, data integrity checks, and password storage. Despite their utility, they face certain challenges like hash collisions, where two different inputs produce the same hash output. This can lead to security concerns in cryptographic applications.<\/p>"},{"question":"How are hash functions used in proxy servers?","answer":"<p>In the context of proxy servers like OneProxy, hash functions can be used for several purposes. They can assist in load balancing by evenly distributing network or application traffic across multiple servers. Hash functions also play a crucial role in data integrity checks and securing communications between proxy servers and clients through the creation of secure hash-based message authentication codes.<\/p>"},{"question":"What is the future perspective of hash functions?","answer":"<p>The advent of quantum computing has introduced new challenges to hash functions, as these powerful machines could potentially break many currently secure hash functions. This scenario has led to the development of post-quantum cryptography, aiming to construct cryptographic algorithms that are secure against both classical and quantum computers.<\/p>"},{"question":"What are some resources to learn more about hash functions?","answer":"<p>Several resources can provide more in-depth knowledge about hash functions. These include the <a href=\"https:\/\/en.wikipedia.org\/wiki\/Hash_function\" target=\"_new\">Wikipedia article on Hash Functions<\/a>, the <a href=\"https:\/\/www.khanacademy.org\/computing\/computer-science\/cryptography\" target=\"_new\">Khan Academy course on Cryptography<\/a>, the <a href=\"https:\/\/www.coursera.org\/learn\/crypto\" target=\"_new\">Coursera course on Cryptography<\/a>, the <a href=\"https:\/\/www.geeksforgeeks.org\/hashing-data-structure\/\" target=\"_new\">Introduction to Hashing<\/a> on GeeksforGeeks, and the <a href=\"https:\/\/csrc.nist.gov\/projects\/hash-functions\" target=\"_new\">NIST\u2019s policy on Hash Functions<\/a>.<\/p>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/wiki\/477430","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\/477430\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media\/468520"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/jp\/wp-json\/wp\/v2\/media?parent=477430"}],"curies":[{"name":"\u3046\u30fc\u3093","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}