{"id":29,"date":"2021-11-25T11:46:45","date_gmt":"2021-11-25T11:46:45","guid":{"rendered":"https:\/\/www.b64.pw\/blog\/?p=29"},"modified":"2021-11-25T11:46:45","modified_gmt":"2021-11-25T11:46:45","slug":"javascript%e3%81%a7%e3%83%95%e3%82%a1%e3%82%a4%e3%83%ab%e3%81%aesha1%e3%83%8f%e3%83%83%e3%82%b7%e3%83%a5%e3%82%92%e8%a8%88%e7%ae%97%e3%81%99%e3%82%8b","status":"publish","type":"post","link":"http:\/\/www.b64.pw\/blog\/?p=29","title":{"rendered":"Javascript\u3067\u30d5\u30a1\u30a4\u30eb\u306esha1\u30cf\u30c3\u30b7\u30e5\u3092\u8a08\u7b97\u3059\u308b"},"content":{"rendered":"\n<p>CryptJS\u3092\u4f7f\u3046\u65b9\u6cd5\u3082\u3042\u308b\u304c\u3001\u4eca\u56de\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u6a19\u6e96\u306eAPI\u306e\u307f\u3067\u884c\u3046\u65b9\u6cd5\u3092\u7d39\u4ecb\u3002<br>\u540c\u69d8\u306e\u65b9\u6cd5\u3067SHA256,SHA384,SHA512\u306e\u30cf\u30c3\u30b7\u30e5\u3082\u8a08\u7b97\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<p><\/p>\n\n\n\n<p>\u30dd\u30a4\u30f3\u30c8<\/p>\n\n\n\n<ul><li>FileReader\u306f\u30ed\u30fc\u30ab\u30eb\u30d5\u30a1\u30a4\u30eb\u3067\u3082\u8aad\u307f\u3060\u3057\u5b8c\u4e86(onload)\u3092\u5f85\u3064<\/li><li>\u30d5\u30a1\u30a4\u30eb\u304c\u30d0\u30a4\u30ca\u30ea\u306e\u5834\u5408\u3082\u60f3\u5b9a\u3057\u3066readAsBinaryString()\u3067\u8aad\u307f\u51fa\u3057\u3066\u304a\u304f\u3068\u7121\u96e3<\/li><li>crypto.subtle.digest()\u306f\u975e\u540c\u671f\u3067\u5b9f\u884c\u3055\u308c\u308b\u306e\u3067await\u306a\u3069\u3067\u5024\u3092\u53d6\u5f97<\/li><li>ArrayBuffer\u578b\u3067\u30cf\u30c3\u30b7\u30e5\u8a08\u7b97\u7d50\u679c\u304c\u8fd4\u3063\u3066\u304f\u308b\u306e\u3067Hex\u8868\u8a18\u306a\u3069\u597d\u307f\u306e\u5f62\u306b\u6210\u578b\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b<\/li><\/ul>\n\n\n\n<pre class=\"wp-block-code\"><code>&lt;html>\r\n&lt;body>\r\n    &lt;input id=\"inputfile\" type=file \/>\r\n    &lt;script>\r\n        async function digestMessage(algo, message) {\r\n            const msgUint8 = (new TextEncoder()).encode(message);\/\/ encode as (utf-8) Uint8Array\r\n            const hashBuffer = await crypto.subtle.digest(algo, msgUint8);\/\/ hash the message\r\n            const hashArray = Array.from(new Uint8Array(hashBuffer));\/\/ convert buffer to byte array\r\n            const hashHex = hashArray.map(b => b.toString(16).padStart(2, '0')).join('');\/\/ convert bytes to hex string\r\n            return hashHex;\r\n        }\r\n        document.querySelector('#inputfile').addEventListener('change', async function(ev){\r\n            if(!ev.target.files){\r\n                return;\r\n            }\r\n            if(!ev.target.files&#91;0]){\r\n                return ;\r\n            }\r\n            const file = ev.target.files&#91;0];\r\n            var reader = new FileReader();\r\n            reader.onload = async function(ev) {\r\n                if (ev.target.readyState != FileReader.DONE) {\r\n                    return;\r\n                }\r\n                const bytes = ev.target.result;\r\n                const hashHex = await digestMessage('SHA-1', bytes);\r\n                alert(hashHex);\r\n            };\r\n            reader.readAsBinaryString(file);\r\n        });\r\n    &lt;\/script>\r\n&lt;\/body>\r\n&lt;\/html><\/code><\/pre>\n\n\n\n<p>\u53c2\u8003<br><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/SubtleCrypto\/digest\">https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/SubtleCrypto\/digest<\/a><br><a href=\"https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/FileReader\">https:\/\/developer.mozilla.org\/ja\/docs\/Web\/API\/FileReader<\/a><\/p>\n\n\n\n<p><\/p>\n\n\n\n<p><\/p>\n","protected":false},"excerpt":{"rendered":"<p>CryptJS\u3092\u4f7f\u3046\u65b9\u6cd5\u3082\u3042\u308b\u304c\u3001\u4eca\u56de\u306f\u30d6\u30e9\u30a6\u30b6\u306e\u6a19\u6e96\u306eAP &#8230;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[5,3],"tags":[],"_links":{"self":[{"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/29"}],"collection":[{"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=29"}],"version-history":[{"count":4,"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/29\/revisions"}],"predecessor-version":[{"id":33,"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=\/wp\/v2\/posts\/29\/revisions\/33"}],"wp:attachment":[{"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=29"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=29"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/www.b64.pw\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=29"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}