{"id":130558,"date":"2024-03-25T15:18:52","date_gmt":"2024-03-25T06:18:52","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/%e3%83%8d%e3%82%a4%e3%83%86%e3%82%a3%e3%83%96%e3%81%aajavascript%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9fsha-256%e6%9a%97%e5%8f%b7%e5%8c%96%e3%82%a2%e3%83%ab%e3%82%b4%e3%83%aa%e3%82%ba%e3%83%a0\/"},"modified":"2024-03-27T15:12:30","modified_gmt":"2024-03-27T06:12:30","slug":"%e3%83%8d%e3%82%a4%e3%83%86%e3%82%a3%e3%83%96%e3%81%aajavascript%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9fsha-256%e6%9a%97%e5%8f%b7%e5%8c%96%e3%82%a2%e3%83%ab%e3%82%b4%e3%83%aa%e3%82%ba%e3%83%a0","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/%e3%83%8d%e3%82%a4%e3%83%86%e3%82%a3%e3%83%96%e3%81%aajavascript%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9fsha-256%e6%9a%97%e5%8f%b7%e5%8c%96%e3%82%a2%e3%83%ab%e3%82%b4%e3%83%aa%e3%82%ba%e3%83%a0\/","title":{"rendered":"\u30cd\u30a4\u30c6\u30a3\u30d6\u306aJavaScript\u3092\u4f7f\u7528\u3057\u305fSHA-256\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u8a73\u7d30\u30b3\u30fc\u30c9"},"content":{"rendered":"<p>JavaScript \u3067 SHA-256 \u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5b9f\u88c5\u3059\u308b\u8a73\u7d30\u306a\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n<pre class=\"post-pre\"><code><span class=\"hljs-comment\">\/\/ \u5c06\u5b57\u7b26\u4e32\u8f6c\u6210UTF-8\u7f16\u7801\u7684\u5b57\u8282\u6570\u7ec4<\/span>\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">stringToUtf8ByteArray<\/span>(<span class=\"hljs-params\">str<\/span>) {\r\n<span class=\"hljs-keyword\">const<\/span> utf8 = <span class=\"hljs-built_in\">unescape<\/span>(<span class=\"hljs-built_in\">encodeURIComponent<\/span>(str));\r\n<span class=\"hljs-keyword\">const<\/span> byteArray = [];\r\n<span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">let<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; utf8.<span class=\"hljs-property\">length<\/span>; i++) {\r\nbyteArray.<span class=\"hljs-title function_\">push<\/span>(utf8.<span class=\"hljs-title function_\">charCodeAt<\/span>(i));\r\n}\r\n<span class=\"hljs-keyword\">return<\/span> byteArray;\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u5c06\u5b57\u8282\u6570\u7ec4\u8f6c\u6210\u5341\u516d\u8fdb\u5236\u5b57\u7b26\u4e32<\/span>\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">byteArrayToHexString<\/span>(<span class=\"hljs-params\">byteArray<\/span>) {\r\n<span class=\"hljs-keyword\">const<\/span> hexString = [];\r\n<span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">let<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; byteArray.<span class=\"hljs-property\">length<\/span>; i++) {\r\nhexString.<span class=\"hljs-title function_\">push<\/span>((<span class=\"hljs-string\">'0'<\/span> + (byteArray[i] &amp; <span class=\"hljs-number\">0xFF<\/span>).<span class=\"hljs-title function_\">toString<\/span>(<span class=\"hljs-number\">16<\/span>)).<span class=\"hljs-title function_\">slice<\/span>(-<span class=\"hljs-number\">2<\/span>));\r\n}\r\n<span class=\"hljs-keyword\">return<\/span> hexString.<span class=\"hljs-title function_\">join<\/span>(<span class=\"hljs-string\">''<\/span>);\r\n}\r\n<span class=\"hljs-comment\">\/\/ \u53f3\u79fb\u4f4d\u8fd0\u7b97<\/span>\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">rotateRight<\/span>(<span class=\"hljs-params\">n, x<\/span>) {\r\n<span class=\"hljs-keyword\">return<\/span> (x &gt;&gt;&gt; n) | (x &lt;&lt; (<span class=\"hljs-number\">32<\/span> - n));\r\n}\r\n<span class=\"hljs-comment\">\/\/ SHA-256\u52a0\u5bc6\u7b97\u6cd5<\/span>\r\n<span class=\"hljs-keyword\">function<\/span> <span class=\"hljs-title function_\">sha256<\/span>(<span class=\"hljs-params\">str<\/span>) {\r\n<span class=\"hljs-keyword\">const<\/span> byteArray = <span class=\"hljs-title function_\">stringToUtf8ByteArray<\/span>(str);\r\n<span class=\"hljs-keyword\">const<\/span> k = [\r\n<span class=\"hljs-number\">0x428a2f98<\/span>, <span class=\"hljs-number\">0x71374491<\/span>, <span class=\"hljs-number\">0xb5c0fbcf<\/span>, <span class=\"hljs-number\">0xe9b5dba5<\/span>, <span class=\"hljs-number\">0x3956c25b<\/span>, <span class=\"hljs-number\">0x59f111f1<\/span>, <span class=\"hljs-number\">0x923f82a4<\/span>, <span class=\"hljs-number\">0xab1c5ed5<\/span>,\r\n<span class=\"hljs-number\">0xd807aa98<\/span>, <span class=\"hljs-number\">0x12835b01<\/span>, <span class=\"hljs-number\">0x243185be<\/span>, <span class=\"hljs-number\">0x550c7dc3<\/span>, <span class=\"hljs-number\">0x72be5d74<\/span>, <span class=\"hljs-number\">0x80deb1fe<\/span>, <span class=\"hljs-number\">0x9bdc06a7<\/span>, <span class=\"hljs-number\">0xc19bf174<\/span>,\r\n<span class=\"hljs-number\">0xe49b69c1<\/span>, <span class=\"hljs-number\">0xefbe4786<\/span>, <span class=\"hljs-number\">0x0fc19dc6<\/span>, <span class=\"hljs-number\">0x240ca1cc<\/span>, <span class=\"hljs-number\">0x2de92c6f<\/span>, <span class=\"hljs-number\">0x4a7484aa<\/span>, <span class=\"hljs-number\">0x5cb0a9dc<\/span>, <span class=\"hljs-number\">0x76f988da<\/span>,\r\n<span class=\"hljs-number\">0x983e5152<\/span>, <span class=\"hljs-number\">0xa831c66d<\/span>, <span class=\"hljs-number\">0xb00327c8<\/span>, <span class=\"hljs-number\">0xbf597fc7<\/span>, <span class=\"hljs-number\">0xc6e00bf3<\/span>, <span class=\"hljs-number\">0xd5a79147<\/span>, <span class=\"hljs-number\">0x06ca6351<\/span>, <span class=\"hljs-number\">0x14292967<\/span>,\r\n<span class=\"hljs-number\">0x27b70a85<\/span>, <span class=\"hljs-number\">0x2e1b2138<\/span>, <span class=\"hljs-number\">0x4d2c6dfc<\/span>, <span class=\"hljs-number\">0x53380d13<\/span>, <span class=\"hljs-number\">0x650a7354<\/span>, <span class=\"hljs-number\">0x766a0abb<\/span>, <span class=\"hljs-number\">0x81c2c92e<\/span>, <span class=\"hljs-number\">0x92722c85<\/span>,\r\n<span class=\"hljs-number\">0xa2bfe8a1<\/span>, <span class=\"hljs-number\">0xa81a664b<\/span>, <span class=\"hljs-number\">0xc24b8b70<\/span>, <span class=\"hljs-number\">0xc76c51a3<\/span>, <span class=\"hljs-number\">0xd192e819<\/span>, <span class=\"hljs-number\">0xd6990624<\/span>, <span class=\"hljs-number\">0xf40e3585<\/span>, <span class=\"hljs-number\">0x106aa070<\/span>,\r\n<span class=\"hljs-number\">0x19a4c116<\/span>, <span class=\"hljs-number\">0x1e376c08<\/span>, <span class=\"hljs-number\">0x2748774c<\/span>, <span class=\"hljs-number\">0x34b0bcb5<\/span>, <span class=\"hljs-number\">0x391c0cb3<\/span>, <span class=\"hljs-number\">0x4ed8aa4a<\/span>, <span class=\"hljs-number\">0x5b9cca4f<\/span>, <span class=\"hljs-number\">0x682e6ff3<\/span>,\r\n<span class=\"hljs-number\">0x748f82ee<\/span>, <span class=\"hljs-number\">0x78a5636f<\/span>, <span class=\"hljs-number\">0x84c87814<\/span>, <span class=\"hljs-number\">0x8cc70208<\/span>, <span class=\"hljs-number\">0x90befffa<\/span>, <span class=\"hljs-number\">0xa4506ceb<\/span>, <span class=\"hljs-number\">0xbef9a3f7<\/span>, <span class=\"hljs-number\">0xc67178f2<\/span>\r\n];\r\n<span class=\"hljs-keyword\">const<\/span> h = [\r\n<span class=\"hljs-number\">0x6a09e667<\/span>, <span class=\"hljs-number\">0xbb67ae85<\/span>, <span class=\"hljs-number\">0x3c6ef372<\/span>, <span class=\"hljs-number\">0xa54ff53a<\/span>, <span class=\"hljs-number\">0x510e527f<\/span>, <span class=\"hljs-number\">0x9b05688c<\/span>, <span class=\"hljs-number\">0x1f83d9ab<\/span>, <span class=\"hljs-number\">0x5be0cd19<\/span>\r\n];\r\n<span class=\"hljs-keyword\">const<\/span> paddedByteArray = [...byteArray];\r\npaddedByteArray.<span class=\"hljs-title function_\">push<\/span>(<span class=\"hljs-number\">0x80<\/span>);\r\n<span class=\"hljs-keyword\">const<\/span> messageLength = paddedByteArray.<span class=\"hljs-property\">length<\/span> * <span class=\"hljs-number\">8<\/span>;\r\n<span class=\"hljs-keyword\">const<\/span> paddingSize = (<span class=\"hljs-number\">448<\/span> - (messageLength + <span class=\"hljs-number\">8<\/span>) % <span class=\"hljs-number\">512<\/span> + <span class=\"hljs-number\">512<\/span>) % <span class=\"hljs-number\">512<\/span>;\r\n<span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">let<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; paddingSize \/ <span class=\"hljs-number\">8<\/span>; i++) {\r\npaddedByteArray.<span class=\"hljs-title function_\">push<\/span>(<span class=\"hljs-number\">0x00<\/span>);\r\n}\r\n<span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">let<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; <span class=\"hljs-number\">8<\/span>; i++) {\r\npaddedByteArray.<span class=\"hljs-title function_\">push<\/span>((messageLength &gt;&gt;&gt; (<span class=\"hljs-number\">56<\/span> - i * <span class=\"hljs-number\">8<\/span>)) &amp; <span class=\"hljs-number\">0xFF<\/span>);\r\n}\r\n<span class=\"hljs-keyword\">const<\/span> chunks = [];\r\n<span class=\"hljs-keyword\">for<\/span> (<span class=\"hljs-keyword\">let<\/span> i = <span class=\"hljs-number\">0<\/span>; i &lt; paddedByteArray.<span class=\"hljs-property\">length<\/span> \/\r\n<\/code><\/pre>\n","protected":false},"excerpt":{"rendered":"<p>JavaScript \u3067 SHA-256 \u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u5b9f\u88c5\u3059\u308b\u8a73\u7d30\u306a\u30b3\u30fc\u30c9\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002 \/\/ \u5c06\u5b57\u7b26\u4e32\u8f6c\u6210UTF-8\u7f16\u7801\u7684\u5b57\u8282\u6570\u7ec4 function stringToUtf8ByteArray(str) { [&hellip;]<\/p>\n","protected":false},"author":8,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-130558","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.5 (Yoast SEO v21.5) - 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Silicon Cloud\" \/>\n<meta property=\"article:published_time\" content=\"2024-03-25T06:18:52+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-03-27T06:12:30+00:00\" \/>\n<meta name=\"author\" content=\"\u84ee, \u7ffc\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u84ee, \u7ffc\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"2\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.silicloud.com\/ja\/blog\/%e3%83%8d%e3%82%a4%e3%83%86%e3%82%a3%e3%83%96%e3%81%aajavascript%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9fsha-256%e6%9a%97%e5%8f%b7%e5%8c%96%e3%82%a2%e3%83%ab%e3%82%b4%e3%83%aa%e3%82%ba%e3%83%a0\/\",\"url\":\"https:\/\/www.silicloud.com\/ja\/blog\/%e3%83%8d%e3%82%a4%e3%83%86%e3%82%a3%e3%83%96%e3%81%aajavascript%e3%82%92%e4%bd%bf%e7%94%a8%e3%81%97%e3%81%9fsha-256%e6%9a%97%e5%8f%b7%e5%8c%96%e3%82%a2%e3%83%ab%e3%82%b4%e3%83%aa%e3%82%ba%e3%83%a0\/\",\"name\":\"\u30cd\u30a4\u30c6\u30a3\u30d6\u306aJavaScript\u3092\u4f7f\u7528\u3057\u305fSHA-256\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u8a73\u7d30\u30b3\u30fc\u30c9 - 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