{"id":5958,"date":"2023-05-20T01:10:15","date_gmt":"2023-05-19T16:10:15","guid":{"rendered":"https:\/\/engineering.webstudio168.jp\/?p=5958"},"modified":"2023-05-20T01:10:16","modified_gmt":"2023-05-19T16:10:16","slug":"how-to-protect-csrf","status":"publish","type":"post","link":"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/","title":{"rendered":"\u521d\u5fc3\u8005\u3082\u62bc\u3055\u3048\u3066\u304a\u304f\u3079\u304dWeb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 vol.2 \u300e\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d5\u30a9\u30fc\u30b8\u30a7\u30ea\uff08CSRF\uff09\u300f\u304b\u3089\u306e\u4fdd\u8b77\u5bfe\u7b56"},"content":{"rendered":"<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_86 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/#%E3%83%AA%E3%82%AF%E3%82%A8%E3%82%B9%E3%83%88%E3%81%AE%E6%A4%9C%E8%A8%BC%E3%81%A8CSRF%E3%83%88%E3%83%BC%E3%82%AF%E3%83%B3%E3%81%AE%E4%BD%BF%E7%94%A8\" >\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u691c\u8a3c\u3068CSRF\u30c8\u30fc\u30af\u30f3\u306e\u4f7f\u7528<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/#%EF%BC%881%EF%BC%89bin2hexrandom_bytes32\" >\uff081\uff09bin2hex(random_bytes(32))<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/#%EF%BC%882%EF%BC%89input%E3%82%BF%E3%82%B0%EF%BC%88hidden%EF%BC%89%E3%81%AE%E5%80%A4%E3%81%AB%EF%BC%881%EF%BC%89%E3%81%AE%E7%94%9F%E6%88%90%E5%80%A4%E3%82%92%E8%A8%AD%E5%AE%9A\" >\uff082\uff09input\u30bf\u30b0\uff08hidden\uff09\u306e\u5024\u306b\uff081\uff09\u306e\u751f\u6210\u5024\u3092\u8a2d\u5b9a<\/a><\/li><\/ul><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/#SameSite%E5%B1%9E%E6%80%A7%E3%81%AE%E4%BD%BF%E7%94%A8\" >SameSite\u5c5e\u6027\u306e\u4f7f\u7528<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-2'><a class=\"ez-toc-link ez-toc-heading-5\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/#%E3%83%AA%E3%83%95%E3%82%A1%E3%83%A9%E3%83%BC%E3%83%81%E3%82%A7%E3%83%83%E3%82%AF\" >\u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af<\/a><ul class='ez-toc-list-level-3' ><li class='ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-6\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/#Web%E3%82%B5%E3%83%BC%E3%83%90%E3%83%BC%E3%81%AE%E8%A8%AD%E5%AE%9A%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%EF%BC%88Apache%EF%BC%89\" >Web\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\uff08Apache\uff09<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-7\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/#%E3%82%B5%E3%83%BC%E3%83%90%E3%83%BC%E3%82%B5%E3%82%A4%E3%83%89%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%A0%E3%81%A7%E3%81%AE%E5%AE%9F%E8%A3%85\" >\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306e\u5b9f\u88c5<\/a><\/li><\/ul><\/li><\/ul><\/nav><\/div>\n\n<p class=\"wp-block-paragraph\">\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d5\u30a9\u30fc\u30b8\u30a7\u30ea\uff08\u4ee5\u4e0b\u3001CSRF\uff09\u306f\u3001Web\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u91cd\u8981\u306a\u8105\u5a01\u306e\u4e00\u3064\u3067\u3059\u3002\u653b\u6483\u8005\u306f\u3001\u88ab\u5bb3\u8005\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u60aa\u7528\u3057\u3001\u4e0d\u6b63\u306a\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u610f\u56f3\u3057\u306a\u3044\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3055\u305b\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001CSRF\u653b\u6483\u304b\u3089\u306e\u4fdd\u8b77\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u521d\u5fc3\u8005\u3067\u3082\u7406\u89e3\u3057\u3084\u3059\u3044\u3088\u3046\u306b\u3001\u57fa\u672c\u7684\u306a\u5bfe\u7b56\u65b9\u6cd5\u3084\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002\u6b63\u3057\u3044\u5bfe\u7b56\u3092\u8b1b\u3058\u308b\u3053\u3068\u3067\u3001\u30a6\u30a7\u30d6\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u5b89\u5168\u3092\u78ba\u4fdd\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30b9\u30af\u30ea\u30d7\u30c6\u30a3\u30f3\u30b0\uff08XSS\uff09\u306b\u3064\u3044\u3066\u306f\u300e<a href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-security-xss\/\">\u521d\u5fc3\u8005\u3082\u62bc\u3055\u3048\u3066\u304a\u304f\u3079\u304dWeb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 vol.1\u3000JavaScript\u300e\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30b9\u30af\u30ea\u30d7\u30c6\u30a3\u30f3\u30b0\uff08XSS\uff09\u300f \u52b9\u679c\u7684\u306a\u5bfe\u7b56\u65b9\u6cd5\u3068\u6700\u9069\u306a\u65b9\u6cd5<\/a>\u300f\u3092\u53c2\u7167\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%83%AA%E3%82%AF%E3%82%A8%E3%82%B9%E3%83%88%E3%81%AE%E6%A4%9C%E8%A8%BC%E3%81%A8CSRF%E3%83%88%E3%83%BC%E3%82%AF%E3%83%B3%E3%81%AE%E4%BD%BF%E7%94%A8\"><\/span>\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u691c\u8a3c\u3068CSRF\u30c8\u30fc\u30af\u30f3\u306e\u4f7f\u7528<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">CSRF\u653b\u6483\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u9001\u4fe1\u5143\u3092\u691c\u8a3c\u3059\u308b\u624b\u6cd5\u3067\u3059\u3002\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u95a2\u9023\u3059\u308b\u60c5\u5831\uff08\u4f8b\uff1aCSRF\u30c8\u30fc\u30af\u30f3\uff09\u3092\u30ea\u30af\u30a8\u30b9\u30c8\u30d1\u30e9\u30e1\u30fc\u30bf\u3084\u30d8\u30c3\u30c0\u306b\u542b\u3081\u3001\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3067\u691c\u8a3c\u3057\u307e\u3059\u3002\u653b\u6483\u8005\u306f\u4ed6\u306e\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u969b\u306b\u3001\u3053\u306e\u691c\u8a3c\u3092\u56de\u907f\u3067\u304d\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u5177\u4f53\u7684\u306b\u306f\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u3067\u30d5\u30a9\u30fc\u30e0\u3092\u751f\u6210\u3059\u308b\u3053\u3068\u3092\u524d\u63d0\u3068\u3057\u3066\u3001<code>&lt;form&gt;<\/code>\u30bf\u30b0\u306e\u4e0b\u5c64\u306b<code>&lt;input&gt;<\/code>\u306b\u4e00\u610f\u306e\u6587\u5b57\u5217\u3092\u8a2d\u7f6e\u3059\u308b\u3053\u3068\u3067\u3001\u30bb\u30c3\u30b7\u30e7\u30f3\u3068\u540c\u4e00\u304b\u3069\u3046\u304b\u3092\u5224\u5225\u3057\u307e\u3059\u3002\u30bb\u30c3\u30b7\u30e7\u30f3\u3068<code>&lt;input&gt;<\/code>\u306e\u6587\u5b57\u5217\u304c\u4e00\u81f4\u3057\u305f\u5834\u5408\u306f\u3001\u51e6\u7406\u3092\u7d9a\u884c\u3055\u305b\u3001\u4e00\u81f4\u3057\u306a\u3044\u5834\u5408\u306f\u51e6\u7406\u3092\u6253\u3061\u5207\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u4ee5\u4e0b\u306fPHP\u3067\u57fa\u672c\u7684\u306a\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u691c\u8a3c\u3092\u884c\u3046\u30bd\u30fc\u30b9\u30b3\u30fc\u30c9\u3067\u3059\u3002\uff08\u6ce8\uff1a\u30d5\u30a9\u30fc\u30e0\u306e\u8868\u793a\u3068\u9001\u4fe1\u30da\u30fc\u30b8\u304c\u540c\u4e00\u306e\u5834\u5408\u306e\u4f8b\u3067\u3059\u3002\uff09<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-lang=\"PHP\"><code>&lt;?php\n\/\/ CSRF\u30c8\u30fc\u30af\u30f3\u306e\u751f\u6210\u3068\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\nsession_start();\nif (!isset($_SESSION[&#39;csrf_token&#39;])) {\n    $_SESSION[&#39;csrf_token&#39;] = bin2hex(random_bytes(32)); \/\/ \uff081\uff09\n}\n\n\/\/ \u30ea\u30af\u30a8\u30b9\u30c8\u306e\u691c\u8a3c\u3068\u51e6\u7406\nif ($_SERVER[&#39;REQUEST_METHOD&#39;] === &#39;POST&#39;) {\n    $submittedToken = $_POST[&#39;_csrf&#39;];\n\n    \/\/ CSRF\u30c8\u30fc\u30af\u30f3\u306e\u691c\u8a3c\n    if (!hash_equals($_SESSION[&#39;csrf_token&#39;], $submittedToken)) {\n        http_response_code(403);\n        die(&#39;Invalid CSRF token&#39;);\n    }\n\n    \/\/ \u30ea\u30af\u30a8\u30b9\u30c8\u306e\u51e6\u7406\n    $message = $_POST[&#39;message&#39;];\n    \/\/ ...\n    echo &#39;Message received&#39;;\n}\n?&gt;\n\n&lt;!-- \u30d5\u30a9\u30fc\u30e0\u306e\u8868\u793a --&gt;\n&lt;form action=&quot;&quot; method=&quot;POST&quot;&gt;\n    &lt;input type=&quot;hidden&quot; name=&quot;_csrf&quot; value=&quot;&lt;?php echo $_SESSION[&#39;csrf_token&#39;]; ?&gt;&quot;&gt; &lt;!-- \uff082\uff09 --&gt;\n    &lt;input type=&quot;text&quot; name=&quot;message&quot; placeholder=&quot;Enter your message&quot;&gt;\n    &lt;button type=&quot;submit&quot;&gt;Submit&lt;\/button&gt;\n&lt;\/form&gt;<\/code><\/pre><\/div>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%EF%BC%881%EF%BC%89bin2hexrandom_bytes32\"><\/span>\uff081\uff09bin2hex(random_bytes(32))<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\"><code>csrf_token<\/code>\u3068\u3044\u3046\u30bb\u30c3\u30b7\u30e7\u30f3\uff08\u203b\uff09\u306b<code>bin2hex(random_bytes(32))<\/code>\u3068\u3044\u3046\u5024\u3092\u30bb\u30c3\u30c8\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u306e\u30b3\u30fc\u30c9\u306f<code>random_bytes(32)<\/code>\u306732\u30d0\u30a4\u30c8\u306e\u30e9\u30f3\u30c0\u30e0\u306a\u30d0\u30a4\u30ca\u30ea\u30c7\u30fc\u30bf\u3092\u751f\u6210\u3057\u305f\u3042\u3068\u3001<code>bin2hex()<\/code>\u30e1\u30bd\u30c3\u30c9\u306716\u9032\u6570\u306e\u6587\u5b57\u5217\u306b\u5909\u63db\u3057\u3066\u3044\u307e\u3059\u3002\u30e9\u30f3\u30c0\u30e0\u751f\u6210\u306a\u306e\u3067\u3053\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u4ee5\u5916\u3067\u540c\u4e00\u306e\u6587\u5b57\u5217\u304c\u53d6\u5f97\u3067\u304d\u308b\u53ef\u80fd\u6027\u306f\u9650\u308a\u306a\u304f\u4f4e\u304f\u3001\u4e00\u81f4\u4e0d\u4e00\u81f4\u3092\u5224\u5b9a\u3059\u308b\u969b\u306b\u975e\u5e38\u306b\u7cbe\u5ea6\u304c\u9ad8\u304f\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u751f\u6210\u6587\u5b57\u5217\u306e\u4f8b\u3068\u3057\u3066\u306f\u3001<code>e5e9fa1ba31ecd1ae84f75caaa474f3a663f05f4<\/code>\u306e\u3088\u3046\u306a\u5024\u304c\u30bb\u30c3\u30b7\u30e7\u30f3\u306b\u683c\u7d0d\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\uff08\u203b\uff09\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u691c\u8a3c\u7528\u306e\u300c\u30bb\u30c3\u30b7\u30e7\u30f3\u540d\u300d\u300cinput\u30bf\u30b0\u306ename\u300d\u306b\u306fCSRF\u304c\u63a8\u6e2c\u3055\u308c\u306b\u304f\u3044\u540d\u524d\u3092\u4ed8\u3051\u308b\u3053\u3068\u3092\u304a\u3059\u3059\u3081\u3057\u307e\u3059<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%EF%BC%882%EF%BC%89input%E3%82%BF%E3%82%B0%EF%BC%88hidden%EF%BC%89%E3%81%AE%E5%80%A4%E3%81%AB%EF%BC%881%EF%BC%89%E3%81%AE%E7%94%9F%E6%88%90%E5%80%A4%E3%82%92%E8%A8%AD%E5%AE%9A\"><\/span>\uff082\uff09input\u30bf\u30b0\uff08hidden\uff09\u306e\u5024\u306b\uff081\uff09\u306e\u751f\u6210\u5024\u3092\u8a2d\u5b9a<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-file=\"anti-csrf.html\" data-lang=\"HTML\"><code>&lt;input type=&quot;hidden&quot; name=&quot;_csrf&quot; value=&quot;&lt;?php echo $_SESSION[&#39;csrf_token&#39;]; ?&gt;&quot;&gt;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">PHP\u3067HTML\u306e\u30d5\u30a9\u30fc\u30e0\u3092\u751f\u6210\u3059\u308b\u969b\u306b<code>type=\"hidden\"<\/code>\u306e<code>&lt;input&gt;<\/code>\u306b\uff081\uff09\u3067\u751f\u6210\u3057\u305f\u30e9\u30f3\u30c0\u30e0\u306a\u6587\u5b57\u5217\u304c\u5024\u306b\u306a\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u5148\u307b\u3069\u306e\u30b5\u30f3\u30d7\u30eb\u6587\u5b57\u5217\u3092\u4f7f\u3046\u3068HTML\u4e0a\u3067\u306f<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-html\" data-file=\"anti-csrf2.html\" data-lang=\"HTML\"><code>&lt;input type=&quot;hidden&quot; name=&quot;_csrf&quot; value=&quot;e5e9fa1ba31ecd1ae84f75caaa474f3a663f05f4&quot;&gt;<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u691c\u8a3c\u306e\u30ed\u30b8\u30c3\u30af\u3068\u3057\u3066\u306f\u3001\u9001\u4fe1\u6642\u306b\uff082\uff09\u306e\u5024\u3068\uff081\uff09\u306e\u30bb\u30c3\u30b7\u30e7\u30f3\u5024\u304c\u540c\u4e00\u304b\u3069\u3046\u304b\u3092\u5224\u5225\u3059\u308b\u3068\u3044\u3046\u3082\u306e\u3067\u3059\u3002\u3053\u306e\u624b\u6cd5\u3092\u7528\u3044\u308b\u3053\u3068\u3067<strong>\u540c\u4e00\u30d6\u30e9\u30a6\u30b6\u304b\u3089\u306e\u30d5\u30a9\u30fc\u30e0\u306e\u9001\u4fe1\u304b\u3069\u3046\u304b\u3092\u30b8\u30e3\u30c3\u30b8\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd<\/strong>\u3067\u3059\u3002\u3082\u3057\u3001<span class=\"marker-under-blue\">\u540c\u4e00\u3067\u306f\u306a\u3044\u5834\u5408\u306f\u4e0d\u5be9\u306a\u30a2\u30af\u30bb\u30b9\u3068\u3057\u3066\u3001\u30b5\u30fc\u30d0\u30fc\u5074\u306e\u53d7\u4fe1\u51e6\u7406\u3092\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u3057\u3066\u3057\u307e\u3046<\/span>\u3068\u3044\u3046\u3053\u3068\u3067\u3059\u306d\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u3061\u306a\u307f\u306b\u3067\u3059\u304c\u3001\u3053\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u691c\u8a3c\u3092\u884c\u3046\u969b\u306b\u3001\u9001\u4fe1\u524d\u306bJavaScript\u3067\u691c\u8a3c\u3057\u3066\u3001\u30a8\u30e9\u30fc\u3067\u3042\u308c\u3070\u9001\u4fe1\u3055\u305b\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3082\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-js\" data-file=\"anti-csrf.js\" data-lang=\"JavaScript\"><code>    \/\/ \u30d5\u30a9\u30fc\u30e0\u9001\u4fe1\u6642\u306e\u30a4\u30d9\u30f3\u30c8\u30cf\u30f3\u30c9\u30e9\n    document.getElementById(&#39;myForm&#39;).addEventListener(&#39;submit&#39;, function(event) {\n        \/\/ CSRF\u30c8\u30fc\u30af\u30f3\u306e\u53d6\u5f97\n        var csrfToken = document.querySelector(&#39;input[name=&quot;_csrf&quot;]&#39;).value;\n\n        \/\/ CSRF\u30c8\u30fc\u30af\u30f3\u306e\u691c\u8a3c\n        if (csrfToken !== &#39;&#39;) {\n            event.preventDefault(); \/\/ \u30d5\u30a9\u30fc\u30e0\u306e\u9001\u4fe1\u3092\u30ad\u30e3\u30f3\u30bb\u30eb\n            \/\/ \u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u306b\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u304b\u3001\u30a8\u30e9\u30fc\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8868\u793a\u3059\u308b\u306a\u3069\u306e\u51e6\u7406\u3092\u884c\u3046\n            console.log(&#39;Invalid CSRF token&#39;);\n        }\n    });<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">CSRF\u5bfe\u7b56\u7528\u306e&lt;input&gt;\u304c\u7121\u3044\u5834\u5408\u306f\u9001\u4fe1\u3092\u30ad\u30e3\u30f3\u30bb\u30eb\u3057\u3066\u3044\u308b\u3060\u3051\u3067\u3059\u3002\u4e0d\u8981\u306a\u30a2\u30af\u30bb\u30b9\u3092\u30b7\u30e3\u30c3\u30c8\u30c0\u30a6\u30f3\u3057\u30b5\u30fc\u30d0\u30fc\u306e\u8ca0\u8377\u3092\u8efd\u6e1b\u3059\u308b\u3053\u3068\u304c\u51fa\u6765\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SameSite%E5%B1%9E%E6%80%A7%E3%81%AE%E4%BD%BF%E7%94%A8\"><\/span>SameSite\u5c5e\u6027\u306e\u4f7f\u7528<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">SameSite\u5c5e\u6027\u306f\u3001\u30af\u30c3\u30ad\u30fc\u3092\u4f7f\u7528\u3059\u308b\u969b\u306b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5411\u4e0a\u3055\u305b\u308b\u305f\u3081\u306e\u5c5e\u6027\u3067\u3059\u3002SameSite\u5c5e\u6027\u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001\u30af\u30c3\u30ad\u30fc\u306e\u9001\u4fe1\u65b9\u6cd5\u3092\u5236\u5fa1\u3057\u3001\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002SameSite\u5c5e\u6027\u306b\u306f\u4ee5\u4e0b\u306e3\u3064\u306e\u5024\u3092\u6307\u5b9a\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li><code>SameSite=None<\/code>\uff1aSameSite\u5c5e\u6027\u3092\u6307\u5b9a\u305b\u305a\u3001\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u306b\u5bfe\u3057\u3066\u3082\u30af\u30c3\u30ad\u30fc\u304c\u9001\u4fe1\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u3053\u306e\u5024\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u306fSecure\u5c5e\u6027\uff08HTTPS\uff09\u3082\u5fc5\u8981\u3067\u3059\u3002<\/li>\n\n\n\n<li><code>SameSite=Strict<\/code>\uff1a<strong>\u540c\u4e00\u30b5\u30a4\u30c8\u5185\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u307f<\/strong>\u306b\u5bfe\u3057\u3066\u30af\u30c3\u30ad\u30fc\u304c\u9001\u4fe1\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002<strong>\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u306f\u30af\u30c3\u30ad\u30fc\u304c\u9001\u4fe1\u3055\u308c\u307e\u305b\u3093<\/strong>\u3002<\/li>\n\n\n\n<li><code>SameSite=Lax<\/code>\uff1aStrict\u3068\u540c\u69d8\u306b\u540c\u4e00\u30b5\u30a4\u30c8\u5185\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u307f\u306b\u5bfe\u3057\u3066\u30af\u30c3\u30ad\u30fc\u304c\u9001\u4fe1\u3055\u308c\u308b\u3088\u3046\u306b\u3057\u307e\u3059\u3002\u305f\u3060\u3057\u3001\u4e00\u90e8\u306e\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\uff08\u5916\u90e8\u30ea\u30f3\u30af\u306b\u3088\u308bGET\u30ea\u30af\u30a8\u30b9\u30c8\u306a\u3069\uff09\u3067\u306f\u30af\u30c3\u30ad\u30fc\u304c\u9001\u4fe1\u3055\u308c\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/li>\n<\/ol>\n\n\n\n<p class=\"wp-block-paragraph\">SameSite\u5c5e\u6027\u306e\u4f7f\u7528\u306b\u3088\u308a\u3001CSRF\u653b\u6483\u3084<a href=\"https:\/\/engineering.webstudio168.jp\/blog\/javascript-security-xss\/\">\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30b9\u30af\u30ea\u30d7\u30c6\u30a3\u30f3\u30b0\uff08XSS\uff09\u653b\u6483<\/a>\u304b\u3089\u306e\u4fdd\u8b77\u304c\u5411\u4e0a\u3057\u307e\u3059\u3002\u7279\u306bStrict\u30e2\u30fc\u30c9\u3067\u306f\u3001\u30af\u30c3\u30ad\u30fc\u306e\u9001\u4fe1\u304c\u53b3\u5bc6\u306b\u5236\u9650\u3055\u308c\u308b\u305f\u3081\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u4e0a\u306e\u30ea\u30b9\u30af\u3092\u4f4e\u6e1b\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"samesite.php\" data-lang=\"PHP\"><code>\/\/ \u30af\u30c3\u30ad\u30fc\u306e\u8a2d\u5b9a\nsetcookie(&#39;my_cookie&#39;, &#39;cookie_value&#39;, [\n    &#39;expires&#39; =&gt; time() + 3600, \/\/ \u6709\u52b9\u671f\u9650\uff081\u6642\u9593\uff09\n    &#39;path&#39; =&gt; &#39;\/&#39;, \/\/ \u30af\u30c3\u30ad\u30fc\u304c\u6709\u52b9\u306a\u30d1\u30b9\n    &#39;domain&#39; =&gt; &#39;example.com&#39;, \/\/ \u30af\u30c3\u30ad\u30fc\u304c\u6709\u52b9\u306a\u30c9\u30e1\u30a4\u30f3\n    &#39;secure&#39; =&gt; true, \/\/ HTTPS\u3067\u306e\u307f\u30af\u30c3\u30ad\u30fc\u306e\u9001\u4fe1\n    &#39;httponly&#39; =&gt; true, \/\/ JavaScript\u304b\u3089\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5236\u9650\n    &#39;samesite&#39; =&gt; &#39;Strict&#39;, \/\/ SameSite\u5c5e\u6027\u306e\u8a2d\u5b9a\n]);<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u4f8b\u3067\u306f<code>setcookie()<\/code> \u95a2\u6570\u3092\u4f7f\u7528\u3057\u3066\u30af\u30c3\u30ad\u30fc\u3092\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<code>samesite<\/code> \u30aa\u30d7\u30b7\u30e7\u30f3\u306b <code>'Strict'<\/code> \u3092\u6307\u5b9a\u3059\u308b\u3053\u3068\u3067\u3001SameSite\u5c5e\u6027\u3092Strict\u30e2\u30fc\u30c9\u306b\u8a2d\u5b9a\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%83%AA%E3%83%95%E3%82%A1%E3%83%A9%E3%83%BC%E3%83%81%E3%82%A7%E3%83%83%E3%82%AF\"><\/span>\u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u306f\u3001Web\u30b5\u30fc\u30d0\u30fc\u304c\u53d7\u3051\u53d6\u3063\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30ea\u30d5\u30a1\u30e9\u30fc\u30d8\u30c3\u30c0\u30fc\u3092\u691c\u8a3c\u3059\u308b\u3053\u3068\u3067\u3001CSRF\u653b\u6483\u3092\u9632\u3050\u305f\u3081\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3067\u3059\u3002<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">\u30ea\u30d5\u30a1\u30e9\u30fc\u30d8\u30c3\u30c0\u30fc\u306b\u306f\u30ea\u30af\u30a8\u30b9\u30c8\u5143\u306eURL\u304c\u542b\u307e\u308c\u3066\u304a\u308a\u3001\u901a\u5e38\u306f\u30a6\u30a7\u30d6\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3066\u3069\u306e\u30da\u30fc\u30b8\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u304b\u3092\u793a\u3059\u305f\u3081\u306b\u4f7f\u7528\u3055\u308c\u307e\u3059\u3002\u53d7\u3051\u53d6\u3063\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30ea\u30d5\u30a1\u30e9\u30fc\u30d8\u30c3\u30c0\u30fc\u3092\u691c\u8a3c\u3057\u3001\u8a31\u53ef\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u3042\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"Web%E3%82%B5%E3%83%BC%E3%83%90%E3%83%BC%E3%81%AE%E8%A8%AD%E5%AE%9A%E3%83%95%E3%82%A1%E3%82%A4%E3%83%AB%EF%BC%88Apache%EF%BC%89\"><\/span>Web\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\uff08Apache\uff09<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Apache\u306e\u5834\u5408\u3001<code>.htaccess<\/code> \u30d5\u30a1\u30a4\u30eb\u3084\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u30d5\u30a1\u30a4\u30eb\uff08<code>httpd.conf<\/code>\uff09\u3067\u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3092\u6709\u52b9\u5316\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f <code>.htaccess<\/code> \u30d5\u30a1\u30a4\u30eb\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-plain\"><code># \u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3092\u6709\u52b9\u5316\u3059\u308b\u8a2d\u5b9a\nRewriteEngine On\nRewriteCond %{REQUEST_METHOD} POST\nRewriteCond %{HTTP_REFERER} !^https:\/\/(www\\.)?example.com\/ [NC]\nRewriteRule ^ - [F]<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u3053\u306e\u8a2d\u5b9a\u3067\u306f\u3001POST\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u5834\u5408\u306b\u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3044\u3001\u8a31\u53ef\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\uff08<code>example.com<\/code>\uff09\u304b\u3089\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u3067\u306a\u3051\u308c\u3070403 Forbidden\u306e\u5fdc\u7b54\u3092\u8fd4\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%82%B5%E3%83%BC%E3%83%90%E3%83%BC%E3%82%B5%E3%82%A4%E3%83%89%E3%83%97%E3%83%AD%E3%82%B0%E3%83%A9%E3%83%A0%E3%81%A7%E3%81%AE%E5%AE%9F%E8%A3%85\"><\/span>\u30b5\u30fc\u30d0\u30fc\u30b5\u30a4\u30c9\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u306e\u5b9f\u88c5<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u72ec\u81ea\u306e\u30b3\u30fc\u30c9\u3067\u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3092\u5b9f\u88c5\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u53d7\u3051\u53d6\u3063\u305f\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u30ea\u30d5\u30a1\u30e9\u30fc\u30d8\u30c3\u30c0\u30fc\u3092\u53d6\u5f97\u3057\u3001\u8a31\u53ef\u3055\u308c\u305f\u30c9\u30e1\u30a4\u30f3\u3068\u6bd4\u8f03\u3057\u3066\u30c1\u30a7\u30c3\u30af\u3092\u884c\u3044\u307e\u3059\u3002\u4ee5\u4e0b\u306fPHP\u306e\u4f8b\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"hcb_wrap\"><pre class=\"prism line-numbers lang-php\" data-file=\"referer-check.php\" data-lang=\"PHP\"><code>$referer = $_SERVER[&#39;HTTP_REFERER&#39;];\n$allowedDomain = &#39;https:\/\/www.example.com&#39;;\n\nif ($referer !== $allowedDomain) {\n    \/\/ \u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u306b\u5931\u6557\u3057\u305f\u5834\u5408\u306e\u51e6\u7406\n    die(&quot;Invalid referer&quot;);\n}<\/code><\/pre><\/div>\n\n\n\n<p class=\"wp-block-paragraph\">\u203b\u4e00\u90e8\u306e\u30d6\u30e9\u30a6\u30b6\u3067\u306f\u30ea\u30d5\u30a1\u30e9\u30fc\u30d8\u30c3\u30c0\u30fc\u304c\u9001\u4fe1\u3055\u308c\u306a\u3044\u8a2d\u5b9a\u306b\u306a\u3063\u3066\u3044\u308b\u5834\u5408\u3084\u3001\u7c21\u5358\u306b\u507d\u88c5\u53ef\u80fd\u306a\u5834\u5408\u304c\u3042\u308b\u305f\u3081\u3001\u30ea\u30d5\u30a1\u30e9\u30fc\u30c1\u30a7\u30c3\u30af\u3068\u7d44\u307f\u5408\u308f\u305b\u3066\u30c8\u30fc\u30af\u30f3\u30d9\u30fc\u30b9\u306eCSRF\u5bfe\u7b56\u3082\u4f75\u7528\u3059\u308b\u3053\u3068\u304c\u63a8\u5968\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d5\u30a9\u30fc\u30b8\u30a7\u30ea\uff08\u4ee5\u4e0b\u3001CSRF\uff09\u306f\u3001Web\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u91cd\u8981\u306a\u8105\u5a01\u306e\u4e00\u3064\u3067\u3059\u3002\u653b\u6483\u8005\u306f\u3001\u88ab\u5bb3\u8005\u306e\u30a2\u30ab\u30a6\u30f3\u30c8\u3092\u60aa\u7528\u3057\u3001\u4e0d\u6b63\u306a\u30ea\u30af\u30a8\u30b9\u30c8\u3092\u9001\u4fe1\u3059\u308b\u3053\u3068\u3067\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u610f\u56f3\u3057\u306a\u3044\u30a2\u30af\u30b7\u30e7\u30f3\u3092\u5b9f\u884c\u3055\u305b\u308b\u3053\u3068\u304c\u3067 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":5998,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"rop_custom_images_group":[],"rop_custom_messages_group":[],"rop_publish_now":"initial","rop_publish_now_accounts":[],"rop_publish_now_history":[],"rop_publish_now_status":"pending","_themeisle_gutenberg_block_has_review":false,"sitemap_hide":"","_veu_custom_css":"","veu_display_promotion_alert":"","vkexunit_cta_each_option":"","footnotes":""},"categories":[55],"tags":[8,114,113,16],"class_list":["post-5958","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-javascript","tag-javascript","tag-php","tag-113","tag-16"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u521d\u5fc3\u8005\u3082\u62bc\u3055\u3048\u3066\u304a\u304f\u3079\u304dWeb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 vol.2 \u300e\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d5\u30a9\u30fc\u30b8\u30a7\u30ea\uff08CSRF\uff09\u300f\u304b\u3089\u306e\u4fdd\u8b77\u5bfe\u7b56 | QooTechWEB-\u958b\u767a\u30ed\u30b0\u30fb\u5b9f\u52d9\u8a18\u9332\u30d6\u30ed\u30b0<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/engineering.webstudio168.jp\/blog\/how-to-protect-csrf\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u521d\u5fc3\u8005\u3082\u62bc\u3055\u3048\u3066\u304a\u304f\u3079\u304dWeb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3 vol.2 \u300e\u30af\u30ed\u30b9\u30b5\u30a4\u30c8\u30ea\u30af\u30a8\u30b9\u30c8\u30d5\u30a9\u30fc\u30b8\u30a7\u30ea\uff08CSRF\uff09\u300f\u304b\u3089\u306e\u4fdd\u8b77\u5bfe\u7b56 | 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content=\"QooTechWEB-\u958b\u767a\u30ed\u30b0\u30fb\u5b9f\u52d9\u8a18\u9332\u30d6\u30ed\u30b0\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/kenichi.yoshimura.735\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/kenichi.yoshimura.735\/\" \/>\n<meta property=\"article:published_time\" content=\"2023-05-19T16:10:15+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2023-05-19T16:10:16+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/engineering.webstudio168.jp\/blog\/wp-content\/uploads\/2023\/05\/pexels-sora-shimazaki-5926362.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"2110\" \/>\n\t<meta property=\"og:image:height\" content=\"1406\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u559c\u591a\u5ddd\u8ce2\u4e00\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" 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