{"id":11915,"date":"2019-10-22T14:04:34","date_gmt":"2019-10-22T05:04:34","guid":{"rendered":"https:\/\/www.eformsign.com\/kr\/support\/?post_type=manual_documentation&#038;p=11915"},"modified":"2020-12-16T11:50:43","modified_gmt":"2020-12-16T02:50:43","slug":"execution-time-signature","status":"publish","type":"manual_documentation","link":"https:\/\/www.eformsign.com\/jp\/support\/documentation\/signature-generation-verification\/generate-signature\/execution-time-signature\/","title":{"rendered":"2.2.1.3 execution_time \u306e\u7f72\u540d"},"content":{"rendered":"\n<p>&#8211; <a href=\"https:\/\/www.eformsign.com\/jp\/support\/documentation\/signature-generation-verification\/generate-signature\/execution-time\/\">2.2.1.2<\/a> \u3067\u53d6\u5f97\u3057\u305f\u30b5\u30fc\u30d0\u30fc\u306e\u73fe\u5728\u6642\u9593\u3092 String\uff08UTF-8\uff09\u306b\u5909\u63db\u3057\u30012.2.1.1\u3067\u53d6\u5f97\u3057\u305f\u79d8\u5bc6\u9375\u3067\u7f72\u540d\u3057\u3001\u7f72\u540d\u3057\u305f\u30c7\u30fc\u30bf\u3092 hex string \u306b\u5909\u63db\u3057\u307e\u3059\uff08\u7f72\u540d\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f SHA256withECDSA \u3092\u4f7f\u7528\u3057\u307e\u3059\uff09\u3002<\/p>\n\n\n\n<h4>Example<\/h4>\n\n\n\n<pre class=\"wp-block-code\"><code>import java.security.KeyFactory;\nimport java.security.spec.PKCS8EncodedKeySpec;\nimport java.security.PrivateKey;\nimport java.security.Signature;\n \n\/\/2.2.1.1 private key\nString privateKeyHexStr = \"\u767a\u884c\u3057\u305fprivate key(String)\";\nKeyFactory keyFact = KeyFactory.getInstance(\"EC\");\nPKCS8EncodedKeySpec psks8KeySpec = new PKCS8EncodedKeySpec(new BigInteger(privateKeyHexStr,16).toByteArray());\nPrivateKey privateKey = keyFact.generatePrivate(psks8KeySpec);\n \n\/\/2.2.1.2 execution_time\nlong execution_time = new Date().getTime();\n \nString execution_time_str = String.valueOf(execution_time);\nSignature ecdsa = Signature.getInstance(\"SHA256withECDSA\");\necdsa.initSign(privateKey);\necdsa.update(execution_time_str.getBytes(\"UTF-8\"));\nString eformsign_signature = new BigInteger(ecdsa.sign()).toString(16);<\/code><\/pre>\n","protected":false},"author":5,"featured_media":0,"parent":11909,"menu_order":0,"template":"","manualdocumentationcategory":[16],"_links":{"self":[{"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/manual_documentation\/11915"}],"collection":[{"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/manual_documentation"}],"about":[{"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/types\/manual_documentation"}],"author":[{"embeddable":true,"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/users\/5"}],"version-history":[{"count":5,"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/manual_documentation\/11915\/revisions"}],"predecessor-version":[{"id":18432,"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/manual_documentation\/11915\/revisions\/18432"}],"up":[{"embeddable":true,"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/manual_documentation\/11909"}],"wp:attachment":[{"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/media?parent=11915"}],"wp:term":[{"taxonomy":"manualdocumentationcategory","embeddable":true,"href":"https:\/\/www.eformsign.com\/jp\/support\/wp-json\/wp\/v2\/manualdocumentationcategory?post=11915"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}