{"id":28221,"date":"2020-05-29T05:56:21","date_gmt":"2020-05-29T12:56:21","guid":{"rendered":"https:\/\/kinsta.com\/?p=7096"},"modified":"2023-08-29T08:07:29","modified_gmt":"2023-08-28T23:07:29","slug":"tls-1-3","status":"publish","type":"post","link":"https:\/\/kinsta.com\/jp\/blog\/tls-1-3\/","title":{"rendered":"TLS 1.3\u306e\u6982\u8981\u30fc\u3088\u308a\u9ad8\u901f\u3067\u5b89\u5168\u306b\u306a\u308a\u307e\u3057\u305f"},"content":{"rendered":"<p>\u672c\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u524d\u56de\u306e\u66f4\u65b0\u304b\u30898\u5e74\u4ee5\u4e0a\u304c\u7d4c\u904e\u3057\u307e\u3057\u305f\u304c\u3001<strong>TLS 1.3\u306e\u6700\u7d42\u7248\u304c2018\u5e748\u6708\u306b\u3084\u3063\u3068\u516c\u958b\u3055\u308c\u307e\u3057\u305f<\/strong>\u3002\ud83d\udc4fWordPress\u30b3\u30df\u30e5\u30cb\u30c6\u30a3\u5168\u4f53\u3068\u3068\u3082\u306bKinsta\u306e\u304a\u5ba2\u69d8\u306b\u3068\u3063\u3066\u3082\u6700\u3082\u9762\u767d\u3044\u306a\u306e\u306f\u3001TLS 1.3\u3067\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u304c\u5927\u5e45\u306b\u6539\u5584\u3055\u308c\u3066\u3044\u308b\u3053\u3068\u3067\u3059\u30022015\u5e74\u5f8c\u534a\u306e<a href=\"https:\/\/kinsta.com\/jp\/learn\/what-is-http2\/\">HTTP\/2\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u66f4\u65b0<\/a>\u3068\u30012018\u5e74\u306eTLS 1.3\u306e\u66f4\u65b0\u306e\u304a\u304b\u3052\u3067\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u63a5\u7d9a\u306f\u4eca\u307e\u3067\u4ee5\u4e0a\u306b\u5b89\u5168\u304b\u3064\u9ad8\u901f\u306b\u306a\u308a\u307e\u3057\u305f\u3002TLS 1.3\u306e\u5909\u66f4\u70b9\u3068\u3001\u305d\u308c\u304cWordPress\u30b5\u30a4\u30c8\u6240\u6709\u8005\u3068\u3057\u3066\u3069\u306e\u3088\u3046\u306b\u5f79\u7acb\u3064\u304b\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u3092\u304a\u8aad\u307f\u304f\u3060\u3055\u3044\u3002<\/p>\n\n<div  class=\"featured-snippet\" id=\"featuredSnippet\">\n    <div class=\"featured-snippet__content\">\n        <h2>TLS\u3068\u306f\uff1f<\/h2>\n        <div><p>TLS\u306f<a href=\"https:\/\/en.wikipedia.org\/wiki\/Transport_Layer_Security\" target=\"_blank\" rel=\"noopener\">Transport Layer Security<\/a>\u306e\u7565\u3067\u3001SSL\uff08Secure Sockets Layer\uff09\u306e\u5f8c\u7d99\u3067\u3059\u3002TLS\u306f\u3001\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u3068\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u5b89\u5168\u306a\u901a\u4fe1\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u9001\u4fe1\u3055\u308c\u308b\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3059\u308b\u305f\u3081\u306b\u5bfe\u79f0\u6697\u53f7\u5316\u304c\u4f7f\u7528\u3055\u308c\u308b\u305f\u3081\u3001\u63a5\u7d9a\u306f\u5b89\u5168\u3067\u3059\u3002\u9375\u306f\u63a5\u7d9a\u3054\u3068\u306b\u5225\u9014\u751f\u6210\u3055\u308c\u3001\uff08TLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3068\u3082\u547c\u3070\u308c\u308b\uff09\u30bb\u30c3\u30b7\u30e7\u30f3\u306e\u958b\u59cb\u6642\u306b\u30cd\u30b4\u30b7\u30a8\u30fc\u30c8\u3055\u308c\u305f\u5171\u6709\u30b7\u30fc\u30af\u30ec\u30c3\u30c8\u306b\u57fa\u3065\u3044\u3066\u3044\u307e\u3059\u3002<\/p>\n<\/div>\n    <\/div>\n    <div class=\"featured-snippet__footer\">\n        <div class=\"arrow-down\"><\/div>\n        <div class=\"featured-snippet__footer--content row nocol middle-xs between-xs reverse\">\n            <div style=\"margin-left: auto; position: relative; top: -1px\" class=\"row nocol middle-xs\">\n                <div class=\"color--mediumGray\" style=\"font-size: 14px; vertical-align: middle;\">\n                    <svg  class=\"icon icon--logo display--block\" aria-hidden=\"true\" focusable=\"false\"><use xlink:href=\"https:\/\/kinsta.com\/jp\/wp-content\/themes\/kinsta\/dist\/sprite.svg?v=e8af2143e3b8bceb5561b327e81ec085#logo\" \/><\/svg>                <\/div>\n                <div class=\"text--bold color--mediumGray\" style=\"padding-left: 3px;\">Support<\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<p>HTTPS\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/smtp-port\/\">SMTP<\/a>\u3001POP3\u3001FTP\u306a\u3069\u306e\u591a\u304f\u306eIP\u30d9\u30fc\u30b9\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001TLS\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n\n<p>\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306e\u8a8d\u8a3c\u5c40\u306b\u5c5e\u3057\u3066\u3044\u308b\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u306e\u306b\u3001<a href=\"https:\/\/kinsta.com\/jp\/blog\/free-ssl-certificate\/\" target=\"_blank\" rel=\"noopener noreferrer\">SSL\u8a3c\u660e\u66f8<\/a>\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u6765\u306f\u3053\u308c\u3089\u306fTLS\u8a3c\u660e\u66f8\u3068\u3044\u3046\u540d\u79f0\u3082\u3042\u308a\u307e\u3059\u304c\u3001\u307b\u3068\u3093\u3069\u306eSSL\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306f\u3001\u4e00\u822c\u7684\u306b\u3088\u304f\u77e5\u3089\u308c\u3066\u3044\u308b\u305f\u3081\u300cSSL\u8a3c\u660e\u66f8\u300d\u3068\u3044\u3046\u7528\u8a9e\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002<\/p>\n<p>SSL\/TLS\u8a3c\u660e\u66f8\u306f\u3001\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30a2\u30c9\u30ec\u30b9\u30d0\u30fc\u306b\u8868\u793a\u3055\u308c\u308bHTTPS\u3068\u3057\u3066\u77e5\u3089\u308c\u3066\u3044\u308b\u6280\u8853\u306e\u80cc\u5f8c\u306b\u3042\u308b\u9b54\u6cd5\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul>\n<li><a href=\"#tls-1.3-vs-tls-1.2\">TLS 1.3 \u3068 TLS 1.2<\/a><\/li>\n<li><a href=\"#speed-tls-1.3\">TLS 1.3\u306e\u901f\u5ea6\u306e\u5229\u70b9<\/a><\/li>\n<li><a href=\"#security-tls-1.3\">TLS 1.3\u306b\u3088\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5411\u4e0a<\/a><\/li>\n<li><a href=\"#tls-1.3-browser-support\">TLS 1.3\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<li><a href=\"#tls-1.3-server-support\">TLS 1.3\u306e\u30b5\u30fc\u30d0\u30fc\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<li><a href=\"#kinsta-tls-1.3-support\">Kinsta\u306eTLS 1.3\u30b5\u30dd\u30fc\u30c8<\/a><\/li>\n<\/ul>\n<h2 id=\"tls-1.3-vs-tls-1.2\">TLS 1.3 \u3068 TLS 1.2<\/h2>\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u6280\u8853\u7279\u5225\u8abf\u67fb\u59d4\u54e1\u4f1a\uff08Internet Engineering Task Force\u3001\u7701\u7565IETF\uff09\u306f\u3001\u53e4\u3044\u30d0\u30fc\u30b8\u30e7\u30f3\u306e\u591a\u3044TLS\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u5b9a\u7fa9\u3092\u62c5\u5f53\u3057\u3066\u304d\u305f\u30b0\u30eb\u30fc\u30d7\u3067\u3059\u3002TLS\u306e\u4ee5\u524d\u306e\u30d0\u30fc\u30b8\u30e7\u30f3\u3067\u3042\u308bTLS 1.2\u306f<a class=\"external mw-magiclink-rfc\" href=\"https:\/\/tools.ietf.org\/html\/rfc5246\" target=\"_blank\" rel=\"nofollow noopener noreferrer\">RFC 5246<\/a>\u3067\u5b9a\u7fa9\u3055\u308c\u3066\u304a\u308a\u3001\u904e\u53bb8\u5e74\u9593\u3001\u30a6\u30a7\u30d6\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u5927\u591a\u6570\u306b\u3088\u3063\u3066\u4f7f\u7528\u3055\u308c\u3066\u3044\u307e\u3059\u30022018\u5e743\u670821\u65e5\u3001\u4e0b\u66f8\u304d\u7248\u304c28\u3082\u3042\u3063\u305f<a href=\"https:\/\/www.ietf.org\/mail-archive\/web\/ietf-announce\/current\/msg17592.html\" target=\"_blank\" rel=\"noopener noreferrer\">TLS 1.3\u304c\u78ba\u5b9a<\/a>\u3057\u307e\u3057\u305f\u3002 \u305d\u3057\u30662018\u5e748\u6708\u306e\u6642\u70b9\u3067\u3001TLS 1.3\u306e\u6700\u7d42\u7248\u304c\u516c\u958b\u3055\u308c\u307e\u3057\u305f\uff08<a href=\"https:\/\/tools.ietf.org\/html\/rfc8446\" target=\"_blank\" rel=\"noopener noreferrer\">RFC 8446<\/a>\uff09\u3002<\/p>\n<p>Cloudflare\u306a\u3069\u306e\u4f01\u696d\u306f\u3059\u3067\u306b<a href=\"https:\/\/blog.cloudflare.com\/introducing-tls-1-3\/\" target=\"_blank\" rel=\"noopener noreferrer\">TLS 1.3\u3092\u9867\u5ba2<\/a>\u306b\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002 <a href=\"https:\/\/twitter.com\/FiloSottile\" target=\"_blank\" rel=\"noopener noreferrer\">Filippo Valsorda<\/a>\u306f\u3001TLS 1.2\u3068TLS 1.3\u306e\u9055\u3044\u306b\u3064\u3044\u3066\u7d20\u6674\u3089\u3057\u3044\u8b1b\u6f14\u3092\u884c\u3044\u307e\u3057\u305f\uff08\u4e0b\u306e\u30d7\u30ec\u30bc\u30f3\u30c6\u30fc\u30b7\u30e7\u30f3\u3092\u53c2\u7167\uff09\u3002\u8981\u3059\u308b\u306b\u3001TLS 1.3\u306eTLS 1.2\u306b\u5bfe\u3057\u3066\u306e\u4e3b\u306a\u5229\u70b9\u306f\u3001<strong>\u9ad8\u901f\u5316\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5411\u4e0a<\/strong>\u3067\u3059\u3002<\/p>\n<div style=\"text-align: center\"><\/div>\n<h2 id=\"speed-tls-1.3\">TLS 1.3\u306e\u901f\u5ea6\u306e\u5229\u70b9<\/h2>\n<p>TLS\u306a\u3069\u6697\u53f7\u5316\u3055\u308c\u305f\u63a5\u7d9a\u306f\u3001\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u89b3\u70b9\u304b\u3089\u898b\u308b\u3068\u3001\u308f\u305a\u304b\u306a\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u3092\u8ffd\u52a0\u3057\u3066\u3044\u307e\u3059\u3002<a href=\"https:\/\/kinsta.com\/jp\/learn\/what-is-http2\/\" target=\"_blank\" rel=\"noopener noreferrer\">HTTP\/2<\/a>\u306f\u3053\u306e\u554f\u984c\u3092\u3042\u308b\u7a0b\u5ea6\u89e3\u6c7a\u3057\u307e\u3057\u305f\u304c\u3001TLS 1.3\u306f\u3001<a href=\"https:\/\/blogs.windows.com\/msedgedev\/2016\/06\/15\/building-a-faster-and-more-secure-web-with-tcp-fast-open-tls-false-start-and-tls-1-3\/\" target=\"_blank\" rel=\"noopener noreferrer\">TLS\u306eFalse Start<\/a>\u3084\u30bc\u30ed\u306e\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u30c7\u30a3\u30ec\u30a4\u30bf\u30a4\u30e0\uff080-RTT\uff09\u306a\u3069\u306e\u6a5f\u80fd\u306b\u3088\u308a\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u63a5\u7d9a\u3092\u3055\u3089\u306b\u9ad8\u901f\u5316\u3057\u307e\u3059\u3002<\/p>\n<p><span data-sheets-value=\"{\" data-sheets-userformat=\"{\"><\/span><\/p>\n<p>\u7c21\u5358\u306b\u8a00\u3046\u3068\u3001TLS 1.2\u3067\u306f\u3001TLS\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u3092\u5b9f\u65bd\u3059\u308b\u306b\u306f2\u56de\u306e\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u304c\u5fc5\u8981\u3067\u3057\u305f\u30021.3\u306e\u5834\u5408\u3001<strong>\u5fc5\u8981\u306a\u306e\u306f1\u56de\u306e\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u306e\u307f<\/strong>\u3067\u3001\u6697\u53f7\u5316\u306e\u30ec\u30a4\u30c6\u30f3\u30b7\u304c\u534a\u5206\u306b\u306a\u308a\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u6697\u53f7\u5316\u3055\u308c\u305f\u63a5\u7d9a\u304c\u4ee5\u524d\u3088\u308a\u3082\u5c11\u3057\u901f\u304f\u611f\u3058\u3089\u308c\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n<figure style=\"width: 698px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" title=\"TLS 1.3 handshake performance\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/10\/tls-1.3-handshake-performance.png\" alt=\"TLS 1.3\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\" width=\"698\" height=\"533\"><figcaption class=\"wp-caption-text\">TLS 1.3\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/figcaption><\/figure>\n<p>TLS 1.3\u306e\u3082\u30461\u3064\u306e\u5229\u70b9\u306f\u3001\u3042\u308b\u610f\u5473\u3067\u300c<strong>\u8a18\u61b6\u304c\u3042\u308b<\/strong>\u300d\u3053\u3068\u3067\u3059\u3002\u4ee5\u524d\u306b\u30a2\u30af\u30bb\u30b9\u3057\u305f\u30b5\u30a4\u30c8\u3067\u306f\u3001\u6700\u521d\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3067\u3082\u30c7\u30fc\u30bf\u3092\u30b5\u30fc\u30d0\u30fc\u306b\u9001\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002\u3053\u308c\u306f\u300c\u305c\u30ed\u306e\u30e9\u30a6\u30f3\u30c9\u30c8\u30ea\u30c3\u30d7\u30c7\u30a3\u30ec\u30a4\u30bf\u30a4\u30e0\u300d\u3068\u8a00\u3044\u307e\u3059\u3002\uff080-RTT\uff09\u3053\u308c\u306b\u3088\u308a\u3001\u8aad\u307f\u8fbc\u307f\u6642\u9593\u306f\u3055\u3089\u306b\u77ed\u7e2e\u3055\u308c\u307e\u3059\u3002<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">TLS 1.3 is much faster than 1.2&#8230;. RUM data (30days) showing median TLS handshake times <a href=\"https:\/\/twitter.com\/hashtag\/webperf?src=hash&amp;ref_src=twsrc%5Etfw\">#webperf<\/a> <a href=\"https:\/\/twitter.com\/hashtag\/isTLSFastYet?src=hash&amp;ref_src=twsrc%5Etfw\">#isTLSFastYet<\/a> <a href=\"https:\/\/t.co\/Mc4RHwg8Vt\">pic.twitter.com\/Mc4RHwg8Vt<\/a><\/p>\n<p>&mdash; Tim Vereecke (@TimVereecke) <a href=\"https:\/\/twitter.com\/TimVereecke\/status\/1129032997221609472?ref_src=twsrc%5Etfw\">May 16, 2019<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2 id=\"security-tls-1.3\">TLS 1.3\u306b\u3088\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5411\u4e0a<\/h2>\n<p>TLS 1.2\u306e\u5927\u304d\u306a\u8ab2\u984c\u306f\u3001\u9069\u5207\u306b\u69cb\u6210\u3055\u308c\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u304c\u653b\u6483\u306b\u5bfe\u3057\u3066\u8106\u5f31\u306b\u306a\u308b\u3053\u3068\u3067\u3059\u3002TLS 1.3\u3067\u306f\u3001TLS 1.2\u304b\u3089\u6b21\u306e\u3088\u3046\u306a\u53e4\u304f\u3066\u5b89\u5168\u3067\u306a\u3044\u6a5f\u80fd\u304c\u524a\u9664\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n<ul style=\"margin-left: 30px\">\n<li>SHA-1<\/li>\n<li>RC4<\/li>\n<li>DES<\/li>\n<li>3DES<\/li>\n<li>AES-CBC<\/li>\n<li>MD5<\/li>\n<li>\u4efb\u610f\u306eDiffie-Hellman\u30b0\u30eb\u30fc\u30d7\u2014 <a href=\"http:\/\/blog.intothesymmetry.com\/2016\/01\/openssl-key-recovery-attack-on-dh-small.html\" target=\"_blank\" rel=\"noopener noreferrer\">CVE-2016-0701<\/a><\/li>\n<li><a href=\"https:\/\/freakattack.com\/\" target=\"_blank\" rel=\"noopener noreferrer\">FREAK<\/a>\u304a\u3088\u3073LogJam\u306e\u539f\u56e0\u3067\u3042\u308b\u8f38\u51fa\u7528\u306e\u6697\u53f7<\/li>\n<\/ul>\n<p>\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3042\u308b\u610f\u5473\u3067\u5358\u7d14\u5316\u3055\u308c\u3066\u3044\u308b\u305f\u3081\u3001\u7ba1\u7406\u8005\u3084\u958b\u767a\u8005\u304c\u30d7\u30ed\u30c8\u30b3\u30eb\u3092\u8aa4\u3063\u3066\u69cb\u6210\u3059\u308b\u53ef\u80fd\u6027\u304c\u4f4e\u304f\u306a\u308a\u307e\u3057\u305f\u3002\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u5f37\u5316\u30b7\u30b9\u30c6\u30e0\u3068\u5fdc\u7528\u6697\u53f7\u5316\u3092\u5c02\u9580\u3068\u3059\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30b3\u30f3\u30b5\u30eb\u30bf\u30f3\u30c8\u306eJessie Victors\u306f\u6b21\u306e\u3088\u3046\u306b<a href=\"https:\/\/www.cigital.com\/blog\/tls-1-3\/\" target=\"_blank\" rel=\"noopener noreferrer\">\u8ff0\u3079\u3066\u3044\u307e\u3059<\/a>\u3002<\/p>\n<blockquote><p>\u79c1\u306f\u4eca\u56de\u306e\u30ea\u30ea\u30fc\u30b9\u3092\u697d\u3057\u307f\u306b\u3057\u3066\u3044\u307e\u3059\u3002\u8106\u5f31\u6027\u306e\u6570\u306f\u306f\u308b\u304b\u306b\u5c11\u306a\u304f\u306a\u308a\u3001TLS\u306f\u4ee5\u524d\u3088\u308a\u3082\u308b\u304b\u306b\u4fe1\u983c\u3067\u304d\u308b\u3088\u3046\u306a\u3082\u306e\u306b\u306a\u308b\u3068\u601d\u3044\u307e\u3059\u3002<\/p><\/blockquote>\n<p>\u307e\u305f\u3001Google\u3082\u4e00\u6b69\u524d\u306b\u9032\u3093\u3067\u3001\u691c\u7d22\u30b3\u30f3\u30bd\u30fc\u30eb\u3067TLS 1\u306f\u5b89\u5168\u3067\u306f\u306a\u304f\u306a\u3063\u305f\u305f\u3081\u3001TLS 1.2\u306b\u5207\u308a\u66ff\u3048\u308b\u3088\u3046\u306b<a href=\"https:\/\/www.seroundtable.com\/google-search-console-tls-24905.html\" target=\"_blank\" rel=\"noopener noreferrer\">\u30e6\u30fc\u30b6\u30fc\u306b\u901a\u77e5\u3057\u59cb\u3066\u3044\u307e\u3059<\/a>\u3002Google\u306e\u6700\u7d42\u7d0d\u671f\u306f2018\u5e743\u6708\u3067\u3059\u3002<\/p>\n<h2 id=\"tls-1.3-browser-support\">TLS 1.3\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u306e\u30b5\u30dd\u30fc\u30c8<\/h2>\n<p>Chrome\u306fChrome 65\u4ee5\u964d\u3001<a href=\"http:\/\/www.chromium.org\/Home\/tls13\">\u4e0b\u66f8\u304d\u7248\u306eTLS 1.3<\/a>\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<strong>Chrome 70<\/strong>\uff082018\u5e7410\u6708\u306b\u30ea\u30ea\u30fc\u30b9\uff09\u3067\u306f\u3001\u9001\u4fe1\u63a5\u7d9a\u306b\u5bfe\u3057\u3066TLS 1.3\u306e\u6700\u7d42\u7248\u304c\u6709\u52b9\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>TLS 1.3\u306e\u4e0b\u66f8\u304d\u7248\u306f\u3001\uff08Quantum\u3092\u542b\u3080\uff09Firefox 52\u4ee5\u964d\u3067\u6709\u52b9\u306b\u306a\u308a\u307e\u3057\u305f\u304c\u3001\u30b5\u30fc\u30d0\u30fc\u306e\u30c8\u30ec\u30e9\u30f3\u30b9\u30681.3\u30cf\u30f3\u30c9\u30b7\u30a7\u30a4\u30af\u306b\u3064\u3044\u3066\u3055\u3089\u306b\u7406\u89e3\u3059\u308b\u307e\u3067\u3001T<a href=\"https:\/\/bugzilla.mozilla.org\/show_bug.cgi?id=1310516\" target=\"_blank\" rel=\"noopener noreferrer\">LS 1.2\u3078\u306e\u5b89\u5168\u3067\u306a\u3044\u30d5\u30a9\u30fc\u30eb\u30d0\u30c3\u30af<\/a>\u3092\u3057\u307e\u3057\u305f\u3002<strong>Firefox 63<\/strong>\uff082018\u5e7410\u6708\u306b\u30ea\u30ea\u30fc\u30b9\uff09\u306f\u3001TLS 1.3\u306e\u6700\u7d42\u7248\u3092\u63d0\u4f9b\u3059\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/p>\n<p>Microsoft Edge\u306f\u30d0\u30fc\u30b8\u30e7\u30f376\u3067TLS 1.3\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u958b\u59cb\u3057\u3001macOS 10.14.4\u306eSafari 12.1\u3067\u306f\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u6709\u52b9\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<figure style=\"width: 1688px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/10\/tls-1.3-browser-support-1.png\" alt=\"TLS 1.3\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u30b5\u30dd\u30fc\u30c8\" width=\"1688\" height=\"870\"><figcaption class=\"wp-caption-text\">TLS 1.3\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u30b5\u30dd\u30fc\u30c8<\/figcaption><\/figure>\n<p>\u305d\u3046\u306f\u8a00\u3063\u3066\u3082\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306eSSL\u30c6\u30b9\u30c8\u30b5\u30fc\u30d3\u30b9\u306e\u4e00\u90e8\u3068\u3001IE\u3084Opera mobile\u306a\u3069\u306e\u4ed6\u306e\u30d6\u30e9\u30a6\u30b6\u30fc\u3082\u306f\u307e\u3060TLS 1.3\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u307e\u305b\u3093\u3002<\/p>\n<p>\u6b8b\u308a\u306e\u30d6\u30e9\u30a6\u30b6\u304c\u8ffd\u3044\u3064\u304f\u307e\u3067\u306b\u306f\u3057\u3070\u3089\u304f\u6642\u9593\u304c\u304b\u304b\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u3002\u6b8b\u308a\u306e\u30d6\u30e9\u30a6\u30b6\u306e\u307b\u3068\u3093\u3069\u306f\u73fe\u5728\u958b\u767a\u4e2d\u3067\u3059\u3002<a href=\"https:\/\/blog.cloudflare.com\/why-tls-1-3-isnt-in-browsers-yet\/\" target=\"_blank\" rel=\"noopener noreferrer\">TLS 1.3\u304c\u307e\u3060\u30d6\u30e9\u30a6\u30b6\u306b\u306a\u3044\u7406\u7531<\/a>\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u3061\u3089\u306eCloudflare\u306b\u3088\u308b\u512a\u308c\u305f\u8a18\u4e8b\u3092\u3054\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n<p>\u305f\u3060\u3057\u30012018\u5e749\u670811\u65e5\u306e\u6642\u70b9\u3067\u3001Cloudflare\u30672\u756a\u76ee\u306b\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u30d0\u30fc\u30b8\u30e7\u30f3\u3068\u3057\u3066\u3001TLS 1.3\u306fTLS 1.0\u3092\u4e0a\u56de\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n<blockquote class=\"twitter-tweet\" data-width=\"500\" data-dnt=\"true\">\n<p lang=\"en\" dir=\"ltr\">Guess what happened today? TLS 1.3 surpassed TLS 1.0 as the second-most common version of TLS seen by Cloudflare. <a href=\"https:\/\/twitter.com\/hashtag\/tls13?src=hash&amp;ref_src=twsrc%5Etfw\">#tls13<\/a> <a href=\"https:\/\/t.co\/ASzgNaUIy0\">pic.twitter.com\/ASzgNaUIy0<\/a><\/p>\n<p>&mdash; Nick Sullivan (@grittygrease) <a href=\"https:\/\/twitter.com\/grittygrease\/status\/1039656938768756736?ref_src=twsrc%5Etfw\">September 11, 2018<\/a><\/p><\/blockquote>\n<p><script async src=\"https:\/\/platform.twitter.com\/widgets.js\" charset=\"utf-8\"><\/script><\/p>\n<h2 id=\"tls-1.3-server-support\">TLS 1.3\u306e\u30b5\u30fc\u30d0\u30fc\u30b5\u30dd\u30fc\u30c8<\/h2>\n<p>\u3054\u5229\u7528\u306e\u30b5\u30fc\u30d0\u30fc\u307e\u305f\u306f\u30b5\u30fc\u30d0\u30fc\u4f1a\u793e\u306fTLS 1.3\u5bfe\u5fdc\u3067\u3042\u308b\u304b\u3092\u8abf\u3079\u308b\u306e\u306b\u3001<a href=\"https:\/\/www.ssllabs.com\/ssltest\/\" target=\"_blank\" rel=\"noopener noreferrer\">SSL Server Test<\/a>\u30c4\u30fc\u30eb\u3092\u3054\u5229\u7528\u304f\u3060\u3055\u3044\u3002\u30c9\u30e1\u30a4\u30f3\u3092\u30b9\u30ad\u30e3\u30f3\u3057\u3066\u3001\u300cProtocol Features\u300d\uff08\u30d7\u30ed\u30c8\u30b3\u30eb\u6a5f\u80fd\uff09\u30bb\u30af\u30b7\u30e7\u30f3\u307e\u3067\u30b9\u30af\u30ed\u30fc\u30eb\u30c0\u30a6\u30f3\u3057\u307e\u3059\u3002\u300cyes\u300d\u307e\u305f\u306f\u300cno\u300d\u304c\u8868\u793a\u3055\u308c\u307e\u3059\u3002<\/p>\n<figure style=\"width: 2099px\" class=\"wp-caption aligncenter\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/kinsta.com\/jp\/wp-content\/uploads\/sites\/6\/2016\/10\/tls-1.3-server-test.png\" alt=\"\u30b5\u30fc\u30d0\u30fc\u3067\u306eTLS 1.3\u5bfe\u5fdc\" width=\"2099\" height=\"635\"><figcaption class=\"wp-caption-text\">\u30b5\u30fc\u30d0\u30fc\u3067\u306eTLS 1.3\u5bfe\u5fdc<\/figcaption><\/figure>\n<h2 id=\"kinsta-tls-1.3-support\">Kinsta\u306eTLS 1.3\u30b5\u30dd\u30fc\u30c8<\/h2>\n<p>\u5f53\u793e\u306eCDN\u30d1\u30fc\u30c8\u30ca\u30fc\u3067\u3042\u308bKeyCDN\u306f\u30012018\u5e749\u670827\u65e5\u306b0-RTT\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308bTLS 1.3\u3092\u30ea\u30ea\u30fc\u30b9\u3057\u307e\u3057\u305f\u3002\u3053\u306e\u304a\u304b\u3052\u3067\u3001Kinsta CDN\u3092\u4ecb\u3057\u3066\u914d\u4fe1\u3055\u308c\u308b\u3059\u3079\u3066\u306e\u30e1\u30c7\u30a3\u30a2\u3068\u30a2\u30bb\u30c3\u30c8\u306b\u95a2\u3057\u3066\u30b5\u30dd\u30fc\u30c8\u304c\u8ffd\u52a0\u3055\u308c\u307e\u3057\u305f\u3002<\/p>\n<p>2019\u5e748\u6708\u306b\u3001\u3059\u3079\u3066\u306e\u30b5\u30fc\u30d0\u30fc\u306bTLS 1.3\u306e\u30b5\u30dd\u30fc\u30c8\u3092\u8ffd\u52a0\u3057\u307e\u3057\u305f\u3002<strong>\ud83d\udd12<\/strong>\u00a0<strong>\u3053\u308c\u3067\u3001TLS 1.3\u306e\u30a6\u30a7\u30d6\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u5229\u70b9\u3092\u6700\u5927\u9650\u306b\u6d3b\u7528\u3044\u305f\u3060\u3051\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3057\u305f\u3002<\/strong>.<\/p>\n<h2>\u307e\u3068\u3081<\/h2>\n<p>HTTP\/2\u3068\u540c\u69d8\u306b\u3001TLS 1.3\u306f\u3001\u4eca\u5f8c\u4f55\u5e74\u3082\u306e\u6069\u6075\u3092\u53d7\u3051\u308b\u53ef\u80fd\u6027\u306e\u3042\u308b\u3082\u3046\u4e00\u3064\u306e\u30a8\u30ad\u30b5\u30a4\u30c6\u30a3\u30f3\u30b0\u306a\u30d7\u30ed\u30c8\u30b3\u30eb\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3059\u3002\u6697\u53f7\u5316\u3055\u308c\u305f\u63a5\u7d9a\uff08HTTPS\uff09\u304c\u9ad8\u901f\u306b\u306a\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u5b89\u5168\u6027\u3082\u5411\u4e0a\u3057\u307e\u3059\u3002Web\u306e\u6210\u9577\u3092\u795d\u3057\u3066\u4e7e\u676f\uff01\u5f93\u6765\u306eTLS\u30d0\u30fc\u30b8\u30e7\u30f3\u3092\u3054\u5229\u7528\u306e\u5834\u5408\u306f\u3001Chrome\u306e<a href=\"https:\/\/kinsta.com\/jp\/blog\/err_ssl_obsolete_version\/\">ERR_SSL_OBSOLETE_VERSION<\/a>\u901a\u77e5\u3092\u4fee\u6b63\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u672c\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u524d\u56de\u306e\u66f4\u65b0\u304b\u30898\u5e74\u4ee5\u4e0a\u304c\u7d4c\u904e\u3057\u307e &#8230;<\/p>\n","protected":false},"author":38,"featured_media":28222,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_kinsta_gated_content":false,"_kinsta_gated_content_redirect":"","footnotes":""},"tags":[127,37],"topic":[834],"class_list":["post-28221","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","tag-tls","tag-websec","topic-wordpress-security"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.6 (Yoast SEO v24.6) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>TLS 1.3\u306e\u6982\u8981\u30fc\u3088\u308a\u9ad8\u901f\u3067\u5b89\u5168\u306b\u306a\u308a\u307e\u3057\u305f\uff01<\/title>\n<meta name=\"description\" content=\"TLS 1.3\u306f\u3001\uff08HTTPS\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u524a\u6e1b\u3055\u308c\u305f\u70ba\uff09TLS 1.2\u3088\u308a\u3082\u9ad8\u901f\u3067\u5b89\u5168\u306a\u65b0\u3057\u3044\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3059\u3002\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u3053\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/kinsta.com\/jp\/blog\/tls-1-3\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"TLS 1.3\u306e\u6982\u8981\u30fc\u3088\u308a\u9ad8\u901f\u3067\u5b89\u5168\u306b\u306a\u308a\u307e\u3057\u305f\" \/>\n<meta property=\"og:description\" content=\"TLS 1.3\u306f\u3001\uff08HTTPS\u30aa\u30fc\u30d0\u30fc\u30d8\u30c3\u30c9\u304c\u524a\u6e1b\u3055\u308c\u305f\u70ba\uff09TLS 1.2\u3088\u308a\u3082\u9ad8\u901f\u3067\u5b89\u5168\u306a\u65b0\u3057\u3044\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3067\u3059\u3002\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u3053\u3053\u3092\u30af\u30ea\u30c3\u30af\u3057\u3066\u304f\u3060\u3055\u3044\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/kinsta.com\/jp\/blog\/tls-1-3\/\" \/>\n<meta property=\"og:site_name\" content=\"Kinsta\u00ae\" \/>\n<meta property=\"article:publisher\" content=\"https:\/\/www.facebook.com\/Kinsta-Japan-334616080691171\/\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/fm.brianleejackson\" \/>\n<meta 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