{"id":77513,"date":"2024-03-20T18:34:34","date_gmt":"2024-03-20T09:34:34","guid":{"rendered":"https:\/\/www.silicloud.com\/ja\/blog\/ssl-%e8%a8%bc%e6%98%8e%e6%9b%b8%e3%82%92-java-%e3%81%a7%e7%94%9f%e6%88%90%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/"},"modified":"2025-08-11T21:48:12","modified_gmt":"2025-08-11T12:48:12","slug":"ssl-%e8%a8%bc%e6%98%8e%e6%9b%b8%e3%82%92-java-%e3%81%a7%e7%94%9f%e6%88%90%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/ja\/blog\/ssl-%e8%a8%bc%e6%98%8e%e6%9b%b8%e3%82%92-java-%e3%81%a7%e7%94%9f%e6%88%90%e3%81%99%e3%82%8b%e6%96%b9%e6%b3%95\/","title":{"rendered":"SSL \u8a3c\u660e\u66f8\u3092 Java \u3067\u751f\u6210\u306e\u65b9\u6cd5"},"content":{"rendered":"

Java\u3067SSL\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3059\u308b\u306b\u306f\u3001Java Keytool\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u81ea\u5df1\u7f72\u540d\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3059\u308b\u304b\u3001Bouncy Castle\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u30ab\u30b9\u30bf\u30e0\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002<\/p>\n

Java Keytool\u3092\u4f7f\u7528\u3057\u3001\u81ea\u5df1\u7f72\u540d\u8a3c\u660e\u66f8\u3092\u4f5c\u6210\u3059\u308b\u624b\u9806\u3092\u4ee5\u4e0b\u306b\u793a\u3057\u307e\u3059\u3002<\/p>\n

    \n
  1. \u30b3\u30de\u30f3\u30c9\u30d7\u30ed\u30f3\u30d7\u30c8\u307e\u305f\u306f\u30bf\u30fc\u30df\u30ca\u30eb\u30a6\u30a3\u30f3\u30c9\u30a6\u3092\u958b\u304f\u3002<\/li>\n
  2. Java\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u30c7\u30a3\u30ec\u30af\u30c8\u30ea\u306ebin\u30d5\u30a9\u30eb\u30c0\u306b\u79fb\u52d5\u3057\u307e\u3059\u3002<\/li>\n
  3. keytool -genkey -alias mydomain -keyalg RSA -keystore keystore.jks -validity 365<\/li>\n
  4. \u30d1\u30b9\u30ef\u30fc\u30c9\u3001\u7d44\u7e54\u540d\u3001\u7d44\u7e54\u5358\u4f4d\u306a\u3069\u306e\u8a3c\u660e\u66f8\u60c5\u5831\u3092\u5165\u529b\u3057\u3066\u304f\u3060\u3055\u3044\u3002<\/li>\n
  5. \u751f\u6210\u3055\u308c\u305f\u30ad\u30fc\u30b9\u30c8\u30a2\u30d5\u30a1\u30a4\u30eb\uff08.jks\uff09\u306b\u306f\u81ea\u5df1\u7f72\u540d\u8a3c\u660e\u66f8\u304c\u542b\u307e\u308c\u307e\u3059\u3002<\/li>\n<\/ol>\n

    \u30ab\u30b9\u30bf\u30e0\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3059\u308b\u5834\u5408\u306f\u3001Bouncy Castle\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3067\u304d\u307e\u3059\u3002\u4ee5\u4e0b\u306f\u3001Bouncy Castle\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u30ab\u30b9\u30bf\u30e0\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3059\u308b\u30b5\u30f3\u30d7\u30eb\u30b3\u30fc\u30c9\u3067\u3059\u3002<\/p>\n

    import<\/span> org.bouncycastle.pkcs.jcajce.JcaPKCS10CertificationRequestBuilder;\r\nimport<\/span> org.bouncycastle.operator.ContentSigner;\r\nimport<\/span> org.bouncycastle.operator.jcajce.JcaContentSignerBuilder;\r\nimport<\/span> org.bouncycastle.pkcs.PKCS10CertificationRequest;\r\nimport<\/span> org.bouncycastle.cert.X509v3CertificateBuilder;\r\nimport<\/span> org.bouncycastle.cert.jcajce.JcaX509v3CertificateBuilder;\r\nimport<\/span> org.bouncycastle.cert.X509CertificateHolder;\r\nimport<\/span> org.bouncycastle.cert.jcajce.JcaX509CertificateConverter;\r\n\r\nimport<\/span> java.math.BigInteger;\r\nimport<\/span> java.security.*;\r\nimport<\/span> java.security.cert.X509Certificate;\r\nimport<\/span> java.util.Date;\r\n\r\npublic<\/span> class<\/span> SSLCertGenerator<\/span> {\r\n    public<\/span> static<\/span> void<\/span> main<\/span>(String[] args)<\/span> throws<\/span> Exception {\r\n        \/\/ Generate a new key pair<\/span>\r\n        KeyPairGenerator<\/span> keyPairGenerator<\/span> =<\/span> KeyPairGenerator.getInstance(\"RSA\"<\/span>);\r\n        keyPairGenerator.initialize(2048<\/span>);\r\n        KeyPair<\/span> keyPair<\/span> =<\/span> keyPairGenerator.generateKeyPair();\r\n\r\n        \/\/ Generate a self-signed certificate<\/span>\r\n        X509Certificate<\/span> certificate<\/span> =<\/span> generateCertificate(keyPair);\r\n\r\n        \/\/ Save the certificate to a file or use it as needed<\/span>\r\n        \/\/ ...<\/span>\r\n    }\r\n\r\n    private<\/span> static<\/span> X509Certificate generateCertificate<\/span>(KeyPair keyPair)<\/span> throws<\/span> Exception {\r\n        \/\/ Generate a certificate signing request (CSR) using the key pair<\/span>\r\n        PKCS10CertificationRequestBuilder<\/span> requestBuilder<\/span> =<\/span> new<\/span> JcaPKCS10CertificationRequestBuilder<\/span>(\r\n                new<\/span> X500Principal<\/span>(\"CN=My Certificate\"<\/span>), keyPair.getPublic());\r\n        ContentSigner<\/span> contentSigner<\/span> =<\/span> new<\/span> JcaContentSignerBuilder<\/span>(\"SHA256WithRSA\"<\/span>).build(keyPair.getPrivate());\r\n        PKCS10CertificationRequest<\/span> csr<\/span> =<\/span> requestBuilder.build(contentSigner);\r\n\r\n        \/\/ Generate a self-signed certificate using the CSR<\/span>\r\n        X509v3CertificateBuilder<\/span> certBuilder<\/span> =<\/span> new<\/span> JcaX509v3CertificateBuilder<\/span>(\r\n                new<\/span> X500Principal<\/span>(\"CN=My Certificate\"<\/span>), BigInteger.ONE, new<\/span> Date<\/span>(),\r\n                new<\/span> Date<\/span>(System.currentTimeMillis() + 365<\/span> * 24<\/span> * 60<\/span> * 60<\/span> * 1000<\/span>),\r\n                csr.getSubject(), csr.getSubjectPublicKeyInfo());\r\n        X509CertificateHolder<\/span> certHolder<\/span> =<\/span> certBuilder.build(contentSigner);\r\n        X509Certificate<\/span> certificate<\/span> =<\/span> new<\/span> JcaX509CertificateConverter<\/span>().getCertificate(certHolder);\r\n\r\n        return<\/span> certificate;\r\n    }\r\n}\r\n<\/code><\/pre>\n
    \u3053\u308c\u306f\u30ab\u30b9\u30bf\u30e0\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3057\u3001’\u8a3c\u660e\u66f8’\u5909\u6570\u306b\u4fdd\u6301\u3057\u307e\u3059\u3002\u5fc5\u8981\u306b\u5fdc\u3058\u3066\u30d5\u30a1\u30a4\u30eb\u306b\u4fdd\u5b58\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u4f8b\u3067\u306fBouncy Castle\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3053\u3068\u306b\u6ce8\u610f\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u3053\u308c\u306f\u3001\u30d7\u30ed\u30b8\u30a7\u30af\u30c8\u306e\u4f9d\u5b58\u95a2\u4fc2\u306b\u8ffd\u52a0\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
    Java\u3067SSL\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3059\u308b\u306b\u306f\u3001Java Keytool\u30c4\u30fc\u30eb\u3092\u4f7f\u3063\u3066\u81ea\u5df1\u7f72\u540d\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3059\u308b\u304b\u3001Bouncy Castle\u30e9\u30a4\u30d6\u30e9\u30ea\u3092\u4f7f\u3063\u3066\u30ab\u30b9\u30bf\u30e0\u8a3c\u660e\u66f8\u3092\u751f\u6210\u3067\u304d\u307e\u3059\u3002 Java Keytool\u3092\u4f7f\u7528\u3057\u3001\u81ea\u5df1\u7f72 […]<\/p>\n","protected":false},"author":6,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[26,61],"class_list":["post-77513","post","type-post","status-publish","format-standard","hentry","category-uncategorized","tag-26","tag-61"],"yoast_head":"\nSSL \u8a3c\u660e\u66f8\u3092 Java \u3067\u751f\u6210\u306e\u65b9\u6cd5 - Blog - Silicon Cloud<\/title>\n<meta name=\"description\" content=\"SSL \u8a3c\u660e\u66f8\u3092 Java \u3067\u751f\u6210\u306e\u65b9\u6cd5\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\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:\/\/www.silicloud.com\/ja\/blog\/ssl-\u8a3c\u660e\u66f8\u3092-java-\u3067\u751f\u6210\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"SSL \u8a3c\u660e\u66f8\u3092 Java \u3067\u751f\u6210\u306e\u65b9\u6cd5\" \/>\n<meta property=\"og:description\" content=\"SSL \u8a3c\u660e\u66f8\u3092 Java \u3067\u751f\u6210\u306e\u65b9\u6cd5\u3092\u5206\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3002\u5b9f\u8df5\u7684\u306a\u4f8b\u3068\u30b3\u30fc\u30c9\u3001\u6ce8\u610f\u70b9\u3092\u542b\u3081\u3066\u521d\u5fc3\u8005\u306b\u3082\u7406\u89e3\u3067\u304d\u308b\u3088\u3046\u8aac\u660e\u3057\u307e\u3059\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/ja\/blog\/ssl-\u8a3c\u660e\u66f8\u3092-java-\u3067\u751f\u6210\u3059\u308b\u65b9\u6cd5\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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