{"id":2903,"date":"2023-11-09T08:10:00","date_gmt":"2023-11-09T00:10:00","guid":{"rendered":"https:\/\/www.dottedsign.com\/ja\/blog\/?p=2903"},"modified":"2023-11-09T15:08:39","modified_gmt":"2023-11-09T07:08:39","slug":"angouka","status":"publish","type":"post","link":"https:\/\/www.dottedsign.com\/ja\/blog\/digital-transformation\/security\/angouka","title":{"rendered":"\u3010\u7c21\u5358\u89e3\u8aac\u3011\u96fb\u5b50\u7f72\u540d\u306e\u6697\u53f7\u5316\u306e\u4ed5\u7d44\u307f\u3068\u306f\uff1f\u6697\u53f7\u5316\u6280\u8853\u3082\u89e3\u8aac"},"content":{"rendered":"\r\n<p><span style=\"font-weight: 400;\">\u3053\u3093\u306b\u3061\u306f\uff01Kdan\u30e9\u30a4\u30bf\u30fc\u306eKay\u3067\u3059\u3002\u6700\u8fd1\u3088\u304f\u306a\u308a\u3059\u307e\u3057\u30e1\u30fc\u30eb\u306b\u3088\u308b\u632f\u8fbc\u8a50\u6b3a\u3084\u60c5\u5831\u6f0f\u3048\u3044\u88ab\u5bb3\u306e\u30cb\u30e5\u30fc\u30b9\u3092\u8033\u306b\u3057\u307e\u3059\u304c\u3001\u7686\u3055\u3093\u306e\u4f1a\u793e\u3067\u306f\u96fb\u5b50\u6587\u66f8\u3084\u91cd\u8981\u30e1\u30fc\u30eb\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306f\u4e07\u5168\u3067\u3059\u304b\uff1f<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u5b9f\u306f\u91cd\u8981\u66f8\u985e\u3084\u30e1\u30fc\u30eb\u306e\u30c7\u30fc\u30bf\u306f\u3001\u96fb\u5b50\u7f72\u540d\u3092\u4f7f\u3063\u3066\u6697\u53f7\u5316\u3059\u308b\u3053\u3068\u3067\u3001\u306a\u308a\u3059\u307e\u3057\u3084\u6539\u3056\u3093\u306e\u30ea\u30b9\u30af\u304b\u3089\u5b88\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\uff01<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u4eca\u56de\u306f\u3001\u96fb\u5b50\u7f72\u540d\u3068\u6697\u53f7\u5316\u6280\u8853\u3001\u305d\u3057\u3066S\/MIME\uff08\u96fb\u5b50\u7f72\u540d\u4ed8\u304d\u30e1\u30fc\u30eb\uff09\u306b\u3064\u3044\u3066\u8a18\u8f09\u3057\u307e\u3059\u3002\u4e00\u898b\u96e3\u3057\u305d\u3046\u306b\u898b\u3048\u308b\u96fb\u5b50\u7f72\u540d\u306e\u6697\u53f7\u5316\u3067\u3059\u304c\u3001\u3053\u306e\u8a18\u4e8b\u3092\u8aad\u3081\u3070\u305f\u3063\u305f\uff15\u5206\u3067\u57fa\u672c\u7684\u306a\u77e5\u8b58\u304c\u5168\u3066\u308f\u304b\u308a\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u4eca\u3059\u3050\u96fb\u5b50\u30c7\u30fc\u30bf\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u304c\u5fc5\u8981\u306a\u4f01\u696d\u306e\u65b9\u306f\u5fc5\u898b\u3067\u3059\uff01<\/span><\/p>\r\n<p>&nbsp;<\/p>\r\n\r\n<div class=\"section-inner block-cta-container\">\r\n<div class=\"block-cta type-2\">\r\n<div class=\"flex 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400;\">\u7d19\u6587\u66f8\u306e\u30b5\u30a4\u30f3\u3084\u5370\u9451\u306b\u76f8\u5f53\u3057\u3001\u96fb\u5b50\u6587\u66f8\u306b\u96fb\u5b50\u7f72\u540d\u3092\u884c\u3046\u3053\u3068\u3067\u9593\u9055\u3044\u306a\u304f\u305d\u306e\u6587\u66f8\u304c\u7f72\u540d\u8005\u672c\u4eba\u306e\u3082\u306e\u3067\u3042\u308b\u3053\u3068\u3068\u3001\u5185\u5bb9\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u8a3c\u660e\u3057\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u306e\u6cd5\u7684\u8981\u4ef6\u306f\u4ee5\u4e0b\u306e\u3088\u3046\u306b<\/span><a href=\"https:\/\/elaws.e-gov.go.jp\/document?lawid=412AC0000000102\" target=\"_blank\" rel=\"noreferrer noopener\"><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u6cd5\uff08\u96fb\u5b50\u7f72\u540d\u53ca\u3073\u8a8d\u8a3c\u696d\u52d9\u306b\u95a2\u3059\u308b\u6cd5\u5f8b\uff09<\/span><\/a><span style=\"font-weight: 400;\">\u3067\u898f\u5b9a\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li><strong>\u96fb\u5b50\u6587\u66f8\u306e\u4f5c\u6210\u8005\u3092\u793a\u3059\u305f\u3081\u306b\u884c\u308f\u308c\u305f\u3082\u306e\u3067\u3042\u308b\u3053\u3068\uff08\u672c\u4eba\u6027\uff09<\/strong><\/li>\r\n<li><strong>\u4f5c\u6210\u3055\u308c\u305f\u96fb\u5b50\u6587\u66f8\u306b\u5bfe\u3059\u308b\u6539\u3056\u3093\u304c\u884c\u308f\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3067\u304d\u308b\u3082\u306e\u3067\u3042\u308b\u3053\u3068\uff08\u975e\u6539\u3056\u3093\u6027\uff09<\/strong><\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u96fb\u5b50\u6587\u66f8\u306f\u53d6\u6271\u304c\u5bb9\u6613\u306a\u4e00\u65b9\u3001\u672c\u4eba\u78ba\u8a8d\u3084\u6539\u3056\u3093\u306e\u30ea\u30b9\u30af\u304c\u9ad8\u3044\u3053\u3068\u304b\u3089\u3001\u96fb\u5b50\u7f72\u540d\u306b\u3088\u3063\u3066\u6587\u66f8\u306e\u771f\u5b9f\u6027\u3068\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><br \/><span style=\"font-weight: 400;\">\u307e\u305f\u96fb\u5b50\u7f72\u540d\u306f<\/span><span style=\"font-weight: 400;\">\u96fb\u5b50\u6587\u66f8\u3092\u6cd5\u7684\u306b\u62c5\u4fdd\u3059\u308b\u70b9<\/span><span style=\"font-weight: 400;\">\u3067\u3001\u4eca\u3084\u91cd\u8981\u66f8\u985e\u306b\u306f\u6b20\u304b\u305b\u306a\u3044\u3082\u306e\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\">\r\n<figure id=\"attachment_2918\" aria-describedby=\"caption-attachment-2918\" style=\"width: 900px\" class=\"wp-caption alignnone\"><img decoding=\"async\" class=\"wp-image-2918\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3-2.jpg\" alt=\"\u3010\u7c21\u5358\u89e3\u8aac\u3011\u96fb\u5b50\u7f72\u540d\u306e\u6697\u53f7\u5316\u306e\u4ed5\u7d44\u307f\u3068\u306f\uff1f\u6697\u53f7\u5316\u6280\u8853\u3082\u89e3\u8aac\" width=\"900\" height=\"500\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3-2.jpg 900w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3-2-300x167.jpg 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3-2-768x427.jpg 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3-2-480x267.jpg 480w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><figcaption id=\"caption-attachment-2918\" class=\"wp-caption-text\">\u3010\u7c21\u5358\u89e3\u8aac\u3011\u96fb\u5b50\u7f72\u540d\u306e\u6697\u53f7\u5316\u306e\u4ed5\u7d44\u307f\u3068\u306f\uff1f\u6697\u53f7\u5316\u6280\u8853\u3082\u89e3\u8aac<\/figcaption><\/figure>\r\n<\/figure>\r\n\r\n\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E9%9B%BB%E5%AD%90%E7%BD%B2%E5%90%8D%E3%81%AE%E6%9A%97%E5%8F%B7%E5%8C%96%E6%8A%80%E8%A1%93\"><\/span>\u96fb\u5b50\u7f72\u540d\u306e\u6697\u53f7\u5316\u6280\u8853<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<figure id=\"attachment_197683\" aria-describedby=\"caption-attachment-197683\" style=\"width: 516px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2023\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2023-11-09-16.06.33.png\"><img decoding=\"async\" class=\"wp-image-197683\" style=\"font-family: NonBreakingSpaceOverride, 'Hoefler Text', 'Noto Serif', Garamond, 'Times New Roman', serif; letter-spacing: normal;\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2023\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2023-11-09-16.06.33-300x190.png\" alt=\"\u3010\u7c21\u5358\u89e3\u8aac\u3011\u96fb\u5b50\u7f72\u540d\u306e\u6697\u53f7\u5316\u306e\u4ed5\u7d44\u307f\u3068\u306f\uff1f\u6697\u53f7\u5316\u6280\u8853\u3082\u89e3\u8aac\" width=\"516\" height=\"327\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2023\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2023-11-09-16.06.33-300x190.png 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2023\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2023-11-09-16.06.33-1024x647.png 1024w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2023\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2023-11-09-16.06.33-768x485.png 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2023\/10\/\u30b9\u30af\u30ea\u30fc\u30f3\u30b7\u30e7\u30c3\u30c8-2023-11-09-16.06.33.png 1032w\" sizes=\"(max-width: 516px) 100vw, 516px\" \/><\/a><figcaption id=\"caption-attachment-197683\" class=\"wp-caption-text\">\u3010\u7c21\u5358\u89e3\u8aac\u3011\u96fb\u5b50\u7f72\u540d\u306e\u6697\u53f7\u5316\u306e\u4ed5\u7d44\u307f\u3068\u306f\uff1f\u6697\u53f7\u5316\u6280\u8853\u3082\u89e3\u8aac<\/figcaption><\/figure>\r\n<h3 class=\"wp-block-heading\"><strong>\u96fb\u5b50\u7f72\u540d\u3068\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f<\/strong><\/h3>\r\n\r\n\r\n\r\n<p><strong>\u96fb\u5b50\u6587\u66f8\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5b88\u308b\u305f\u3081\u306e\u4ee3\u8868\u7684\u306a\u6697\u53f7\u65b9\u5f0f\u306b\u306f\u3001\u9001\u4fe1\u8005\u30fb\u53d7\u4fe1\u8005\u306e\u53cc\u65b9\u304c\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u3067\u540c\u4e00\u306e\u9375\uff08\u5171\u901a\u9375\uff09\u3092\u7528\u3044\u308b\u300c\u5171\u901a\u9375\u6697\u53f7\u300d\u3068\u3001\u6697\u53f7\u5316\u3059\u308b\u9375\u3068\u5fa9\u53f7\u3059\u308b\u9375\u3092\u5225\u3005\u306b\u7ba1\u7406\u3059\u308b\u300c\u516c\u958b\u9375\u6697\u53f7\u300d\u304c\u3042\u308a\u307e\u3059\u3002<\/strong><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u306e\u6697\u53f7\u5316\u306e\u4ed5\u7d44\u307f\u306b\u306f\u300c<\/span><span style=\"font-weight: 400;\">\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f<\/span><span style=\"font-weight: 400;\">\u300d\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u3068\u3067\u7570\u306a\u308b2\u3064\u306e\u9375\uff08\u516c\u958b\u9375\u3068\u79d8\u5bc6\u9375\uff09\u3092\u4f7f\u7528\u3059\u308b\u65b9\u5f0f\u3067\u3059\u3002<\/span><\/p>\r\n<p>&nbsp;<\/p>\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"900\" height=\"500\" class=\"wp-image-2919\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4-2.jpg\" alt=\"\u6697\u53f7\u5316\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4-2.jpg 900w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4-2-300x167.jpg 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4-2-768x427.jpg 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4-2-480x267.jpg 480w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\r\n\r\n\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\"><strong>\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f\u306f\u3082\u3068\u3082\u3068\u3001\u516c\u958b\u9375\u3092\u7528\u3044\u3066\u6587\u66f8\u3092\u6697\u53f7\u5316\u3057\u3001\u79d8\u5bc6\u9375\u3092\u7528\u3044\u3066\u6587\u66f8\u3092\u5fa9\u5143\u3059\u308b\u65b9\u5f0f\u3067\u3057\u305f<\/strong>\u3002\u3057\u304b\u3057\u3001\u96fb\u5b50\u7f72\u540d\u3067\u306f\u4e00\u822c\u7684\u306b\u79d8\u5bc6\u9375\u3092\u6697\u53f7\u5316\u306b\u4f7f\u3046\u3053\u3068\u304c\u3067\u304d\u308bRSA\u6697\u53f7\u65b9\u5f0f\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">RSA\u6697\u53f7\u65b9\u5f0f<\/span><span style=\"font-weight: 400;\">\u3068\u306f1978\u5e74\u306bRivest, Shamir, Adleman \u306e 3\u540d\u304c\u767a\u660e\u3057\u305f\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3001\u540c\u3058\u9375\u30da\u30a2\uff08\u516c\u958b\u9375\u3068\u79d8\u5bc6\u9375\uff09\u3092\u6697\u53f7\u5316\u3068\u7f72\u540d\u306e\u4e21\u65b9\u306b\u5229\u7528\u3067\u304d\u308b\u3053\u3068\u304c\u7279\u5fb4\u3067\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><strong>\uff1c\u516c\u958b\u9375\u6697\u53f7\u306e\uff12\u3064\u306e\u9375\uff1e<\/strong><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u516c\u958b\u9375\uff1a\u6240\u6709\u8005\u306b\u3088\u3063\u3066\u6587\u66f8\u3092\u6697\u53f7\u5316\u3059\u308b\u305f\u3081\u306e\u9375<\/strong><\/li>\r\n<li><strong>\u79d8\u5bc6\u9375\uff1a\u53d7\u4fe1\u8005\u304c\u6587\u66f8\u306e\u771f\u5b9f\u6027\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3068\u3082\u306b\u6697\u53f7\u3092\u5fa9\u5143\u3059\u308b\u305f\u3081\u306e\u9375<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p><strong>\uff1cRSA\u6697\u53f7\uff08\u516c\u958b\u9375\u3068\u79d8\u5bc6\u9375\u3092\u9006\u306e\u7528\u9014\u3067\u4f7f\u7528\uff09\uff1e<\/strong><\/p>\r\n\r\n\r\n\r\n<p>*<strong>\u96fb\u5b50\u7f72\u540d\u306b\u4e00\u822c\u7684\u306b\u4f7f\u7528\u3055\u308c\u308b\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f<\/strong><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><strong>\u79d8\u5bc6\u9375\uff1a\u53d7\u4fe1\u8005\u304c\u6587\u66f8\u306e\u771f\u5b9f\u6027\u3092\u78ba\u8a8d\u3059\u308b\u3068\u3068\u3082\u306b\u6697\u53f7\u3092\u5fa9\u5143\u3059\u308b\u305f\u3081\u306e\u9375<\/strong><\/li>\r\n<li><strong>\u516c\u958b\u9375\uff1a\u6240\u6709\u8005\u306b\u3088\u3063\u3066\u6587\u66f8\u3092\u6697\u53f7\u5316\u3059\u308b\u305f\u3081\u306e\u9375<\/strong><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"900\" height=\"500\" class=\"wp-image-2922\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/1.png\" alt=\"\u516c\u958b\u9375\u3068\u79d8\u5bc6\u9375\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/1.png 900w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/1-300x167.png 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/1-768x427.png 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/1-480x267.png 480w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u53c2\u8003\uff1aSRC\u30bd\u30d5\u30c8\u30ea\u30b5\u30fc\u30c1\u30bb\u30f3\u30bf\u30fc\uff1a<\/span><a href=\"http:\/\/www.src-j.com\/books\/pdf\/205_pt.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><span style=\"font-weight: 400;\">PKI \u306b\u95a2\u3059\u308b\u57fa\u672c\u77e5\u8b58<\/span><\/a><\/p>\r\n\r\n\r\n\r\n<h3><strong>\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f\u306e\u6587\u66f8\u9001\u4ed8\u306e\u6d41\u308c\uff08RSA\u6697\u53f7\u5316\u65b9\u5f0f\u4f7f\u7528\uff09<\/strong><\/h3>\r\n\r\n\r\n\r\n<ol class=\"wp-block-list\">\r\n<li><span style=\"font-weight: 400;\">\u9001\u4fe1\u8005\u306f\u3001\u96fb\u5b50\u53d6\u5f15\u958b\u59cb\u524d\u306b\u8a8d\u8a3c\u5c40\u306b\u5bfe\u3057\u3066<\/span><span style=\"font-weight: 400;\">\u96fb\u5b50\u8a3c\u660e\u66f8\u306e\u5229\u7528\u7533\u3057\u8fbc\u307f<\/span><span style=\"font-weight: 400;\">\u3092\u884c\u3044\u3001\u8a8d\u8a3c\u5c40\u304b\u3089\u96fb\u5b50\u8a3c\u660e\u66f8\u3092\u53d7\u7406\u3059\u308b\u3002<\/span><br \/><span style=\"font-weight: 400;\">\u96fb\u5b50\u8a3c\u660e\u66f8\u306e\u53d7\u7406\u306b\u3088\u308a\u3001\u79d8\u5bc6\u9375\u3068\u516c\u958b\u9375\u306e\u4e00\u5bfe\u4e00\u306e\u5bfe\u5fdc\u4ed8\u3051\u304c\u884c\u306a\u308f\u308c\u3001\u516c\u958b\u9375\u306e\u6b63\u5f53\u6027\u304c\u4fdd\u8a3c\u3055\u308c\u308b\u3002<\/span><\/li>\r\n<li>\u9001\u4fe1\u8005\u306f\u96fb\u5b50\u6587\u66f8\u3092\u9001\u4ed8\u3059\u308b\u969b\u3001\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306b\u3088\u308a\u30c7\u30fc\u30bf\u3092\u30cf\u30c3\u30b7\u30e5\u5024\u306b\u5909\u63db\u3057\u305f\u306e\u3061\u3001\u79d8\u5bc6\u9375\u306b\u3088\u308a\u96fb\u5b50\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u3059\u308b\uff08\u96fb\u5b50\u66f8\u540d\uff09\u3002<\/li>\r\n<li>\u6697\u53f7\u5316\u3055\u308c\u305f\u96fb\u5b50\u30c7\u30fc\u30bf\u3092\u516c\u958b\u9375\uff08\u96fb\u5b50\u8a3c\u660e\u66f8\uff09\u3068\u3068\u3082\u306b\u76f8\u624b\u306b\u9001\u4ed8\u3059\u308b\u3002<\/li>\r\n<li>\u53d7\u4fe1\u8005\u306f\u53d7\u4fe1\u3057\u305f\u66f8\u985e\u3092\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3092\u7528\u3044\u3066\u5fa9\u5143\u3059\u308b\u3068\u3068\u3082\u306b\u3001\u96fb\u5b50\u7f72\u540d\u3092\u3001\u9001\u4fe1\u6642\u306e\u6697\u53f7\u5316\u306b\u4f7f\u7528\u3057\u305f\u79d8\u5bc6\u9375\u306b\u5bfe\u5fdc\u3057\u305f\u516c\u958b\u9375\uff08\u96fb\u5b50\u8a3c\u660e\u66f8\uff09\u3067\u5fa9\u5143\u3059\u308b\u3002<br \/>\u3053\u306e\u6642\u306b\u30c7\u30fc\u30bf\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3001\u307e\u305f\u9001\u4fe1\u8005\u672c\u4eba\u304b\u3089\u306e\u30c7\u30fc\u30bf\u3067\u3042\u308b\u3053\u3068\u304c\u78ba\u8a8d\u3055\u308c\u305f\u5834\u5408\u306e\u307f\u3001\u5fa9\u5143\u304c\u53ef\u80fd\u3068\u306a\u308b\u3002<\/li>\r\n<\/ol>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"900\" height=\"500\" class=\"wp-image-2923\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/2.png\" alt=\"\u96fb\u5b50\u7f72\u540d\u30fb\u8a8d\u8a3c\u306e\u4ed5\u7d44\u307f\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/2.png 900w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/2-300x167.png 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/2-768x427.png 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/2-480x267.png 480w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u53c2\u8003\uff1a\u7dcf\u52d9\u7701HP\u3000<\/span><a href=\"https:\/\/www.soumu.go.jp\/main_sosiki\/joho_tsusin\/top\/ninshou-law\/pdf\/090611_1.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u30fb\u8a8d\u8a3c\u30fb\u30bf\u30a4\u30e0\u30b9\u30bf\u30f3\u30d7 \u305d\u306e\u5f79\u5272\u3068\u6d3b\u7528\uff08\u30ea\u30fc\u30d5\u30ec\u30c3\u30c8\uff09<\/span><\/a><span style=\"font-weight: 400;\">\u3092\u57fa\u306b\u4f5c\u6210<\/span><\/p>\r\n\r\n\r\n\r\n<h3 class=\"wp-block-heading\"><strong>\u96fb\u5b50\u7f72\u540d\u3068\u96fb\u5b50\u8a3c\u660e\u66f8<\/strong><\/h3>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u306b\u306f<\/span><a href=\"https:\/\/esac.jipdec.or.jp\/why-e-signature\/public-key-infrastructure.html\" target=\"_blank\" rel=\"noreferrer noopener\"><span style=\"font-weight: 400;\">\u516c\u958b\u9375\u6697\u53f7\u57fa\u76e4<\/span><\/a><span style=\"font-weight: 400;\">\uff08PKI\uff09\u3068\u547c\u3070\u308c\u308b\u300c\u6697\u53f7\u5316\u300d\u306e\u6280\u8853\u304c\u7528\u3044\u3089\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u5177\u4f53\u7684\u306b\u306f\u3001\u516c\u958b\u9375\u6697\u53f7\u3067\u7528\u3044\u308b\u79d8\u5bc6\u9375\u3068\u516c\u958b\u9375\u306e\u7d44\u307f\u5408\u308f\u305b\u306e\u95a2\u9023\u3065\u3051\u3068\u3001\u305d\u306e\u9375\u30da\u30a2\u306e\u6240\u6709\u8005\u306e\u95a2\u4fc2\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306e\u4ed5\u7d44\u307f\uff08\u57fa\u76e4\uff09\u3067\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u516c\u958b\u9375\u6697\u53f7\u57fa\u76e4<\/span><span style=\"font-weight: 400;\">\uff08PKI\uff09\u306e\u4e2d\u3067\u300c\u516c\u958b\u9375\u300d\u306e\u5f79\u5272\u3092\u679c\u305f\u3059\u306e\u304c\u96fb\u5b50\u8a3c\u660e\u66f8\u3067\u3059\u3002\u96fb\u5b50\u8a3c\u660e\u66f8\u306e\u5229\u7528\u3092\u958b\u59cb\u3059\u308b\u305f\u3081\u306b\u306f\u3001<\/span><span style=\"font-weight: 400;\">\u8a8d\u8a3c\u5c40<\/span><span style=\"font-weight: 400;\">\u306b\u5bfe\u3057\u3066\u4e8b\u524d\u306b\u96fb\u5b50\u8a3c\u660e\u66f8\u306e\u5229\u7528\u7533\u3057\u8fbc\u307f\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u96fb\u5b50\u8a3c\u660e\u66f8\u306f\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306e\u300c\u5b9f\u5370\u300d\u3068\u300c\u5370\u9451\u767b\u9332\u8a3c\u660e\u66f8\u300d\u306e\u6a5f\u80fd\u3092\u6301\u3061\u307e\u3059\u3002\u96fb\u5b50\u7f72\u540d\u4ed8\u304d\u306e\u6587\u66f8\u3092\u53d7\u3051\u53d6\u3063\u305f\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u9805\u76ee\u3092\u78ba\u8a8d\u3057\u3001\u96fb\u5b50\u8a3c\u660e\u66f8\u304c\u4fe1\u983c\u3067\u304d\u308b\u304b\u3069\u3046\u304b\u78ba\u304b\u3081\u307e\u3057\u3087\u3046\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u306b\u5229\u7528\u3055\u308c\u305f\u96fb\u5b50\u8a3c\u660e\u66f8\u306f\u3001\u4fe1\u983c\u3055\u308c\u305f<\/span><span style=\"font-weight: 400;\">\u8a8d\u8a3c\u5c40<\/span><span style=\"font-weight: 400;\">\u304b\u3089\u767a\u884c\u3055\u308c\u3066\u3044\u308b\u304b<\/span><\/li>\r\n<li><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u306b\u5229\u7528\u3055\u308c\u305f\u96fb\u5b50\u8a3c\u660e\u66f8\u306f\u3001\u5931\u52b9\u3057\u3066\u3044\u306a\u3044\u304b\uff08\u8a8d\u8a3c\u5c40\u304b\u3089\u767a\u884c\u3055\u308c\u308b<\/span><span style=\"font-weight: 400;\">CRL\u30ea\u30b9\u30c8<\/span><span style=\"font-weight: 400;\">\u3067\u78ba\u8a8d\uff09<\/span><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u307e\u305f\u96fb\u5b50\u8a3c\u660e\u66f8\u3092\u30cf\u30fc\u30c9\u30c7\u30a3\u30b9\u30af\u306b\u767b\u9332\u3057\u3066\u3044\u308b\u5834\u5408\u3001\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u901a\u3058\u3066\u6697\u53f7\u5316\u306b\u4f7f\u3063\u305f\u79d8\u5bc6\u9375\u304c\u76d7\u307e\u308c\u308b\u5371\u967a\u304c\u3042\u308a\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u305d\u306e\u305f\u3081IC\u30ab\u30fc\u30c9\u306a\u3069\u3001\u5fc5\u8981\u6642\u306b\u88c5\u7740\u3067\u304d\u308b\u5a92\u4f53\u3067\u306e\u4fdd\u7ba1\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"900\" height=\"500\" class=\"wp-image-2920\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/5-1.jpg\" alt=\"\u96fb\u5b50\u7f72\u540d\u306e\u9375\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/5-1.jpg 900w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/5-1-300x167.jpg 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/5-1-768x427.jpg 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/5-1-480x267.jpg 480w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"SMIME%E3%81%A8%E3%81%AF%EF%BC%88%E9%9B%BB%E5%AD%90%E7%BD%B2%E5%90%8D%E4%BB%98%E3%81%8D%E3%83%A1%E3%83%BC%E3%83%AB%EF%BC%89\"><\/span>S\/MIME\u3068\u306f\uff08\u96fb\u5b50\u7f72\u540d\u4ed8\u304d\u30e1\u30fc\u30eb\uff09<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u4eca\u56de\u306f\u3001\u96fb\u5b50\u7f72\u540d\u4ed8\u304d\u30e1\u30fc\u30eb\u306b\u3064\u3044\u3066\u3082\u7d39\u4ecb\u3057\u305f\u3044\u3068\u601d\u3044\u307e\u3059\uff01\u5b9f\u306f\u96fb\u5b50\u7f72\u540d\u3092\u4f7f\u3046\u4f01\u696d\u306e\u534a\u5206\u4ee5\u4e0a\u306f\u3001\u30e1\u30fc\u30eb\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5f37\u5316\uff0810\u5927\u8105\u5a01\u00a0 5\u4f4d\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u5bfe\u7b56\uff09\u306b\u96fb\u5b50\u7f72\u540d\u3092\u5229\u7528\u3057\u3066\u3044\u308b\u305d\u3046\u3067\u3059\u3002<\/span><br \/><span style=\"font-weight: 400;\">\u3053\u306e\u96fb\u5b50\u7f72\u540d\u4ed8\u304d\u30e1\u30fc\u30eb\u306e\u4ee3\u8868\u898f\u683c\u304cS\/MIME\u3067\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">(\u203b)S\/MIME: Secure Multipurpose Internet Mail Extensions<\/span><\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"900\" height=\"500\" class=\"wp-image-2924\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3.png\" alt=\"\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8105\u5a01\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3.png 900w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3-300x167.png 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3-768x427.png 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/3-480x267.png 480w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u53c2\u8003\uff1aIPA\u60c5\u5831\u51e6\u7406\u63a8\u9032\u6a5f\u69cb\u3000<\/span><a href=\"https:\/\/www.ipa.go.jp\/files\/000088835.pdf\" target=\"_blank\" rel=\"noreferrer noopener\"><span style=\"font-weight: 400;\">\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a310\u5927\u8105\u5a01 2021<\/span><\/a><span style=\"font-weight: 400;\">\u3000<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">S\/MIME\u3068\u306f\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u30b7\u30b9\u30c6\u30e0\u4e0a\u3067\u9ad8\u5ea6\u306a\u8a8d\u8a3c\u3084\u6697\u53f7\u5316\u901a\u4fe1\u3092\u884c\u3046\u56fd\u969b\u898f\u683c\u3092\u6307\u3057\u307e\u3059\u3002\u6697\u53f7\u5316\u6280\u8853\u306f\u3001\u96fb\u5b50\u6587\u66f8\u3078\u306e\u96fb\u5b50\u7f72\u540d\u3068\u540c\u3058<\/span><span style=\"font-weight: 400;\">\u516c\u958b\u9375\u6697\u53f7\u57fa\u76e4<\/span><span style=\"font-weight: 400;\">\uff08PKI\uff09\u3092\u4f7f\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">S\/MIME\u3092\u4f7f\u3046\u3068\u3001\u96fb\u5b50\u8a3c\u660e\u66f8\u3092\u7528\u3044\u3066\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316\u3068\u30e1\u30fc\u30eb\u3078\u96fb\u5b50\u7f72\u540d\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u3001\u306a\u308a\u3059\u307e\u3057\u306e\u9632\u6b62\u3084\u30e1\u30fc\u30eb\u306e\u6539\u3056\u3093\u3092\u691c\u77e5\u3059\u308b\u306e\u3067\u3001\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u5bfe\u7b56\u3068\u3057\u3066\u52b9\u679c\u304c\u671f\u5f85\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u305f\u3060\u3057S\/MIME\u3092\u4f7f\u7528\u3059\u308b\u969b\u306f\u3001\u9001\u4fe1\u8005\u3068\u53d7\u4fe1\u8005\u5074\u3068\u306e\u4e21\u65b9\u304cS\/MIME\u306b\u5bfe\u5fdc\u3059\u308b\u96fb\u5b50\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><br \/><span style=\"font-weight: 400;\">\u53d7\u4fe1\u8005\u5074\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u5834\u5408\u3001\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u306f\u3067\u304d\u3066\u3082\u96fb\u5b50\u7f72\u540d\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u4e2d\u8eab\u304c\u78ba\u8a8d\u3067\u304d\u307e\u305b\u3093\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u73fe\u5728\u306f\u307b\u3068\u3093\u3069\u306e\u4e3b\u8981\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u304c\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u4f7f\u7528\u524d\u306b\u81ea\u793e\u3068\u76f8\u624b\u5148\u306e\u30e1\u30fc\u30eb\u74b0\u5883\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u307e\u305fS\/MIME\u5229\u7528\u306e\u969b\u306b\u3082\u3001<\/span><span style=\"font-weight: 400;\">\u8a8d\u8a3c\u5c40<\/span><span style=\"font-weight: 400;\">\u306b\u5bfe\u3057\u3066\u4e8b\u524d\u306b\u96fb\u5b50\u8a3c\u660e\u66f8\u306e\u5229\u7528\u7533\u3057\u8fbc\u307f\u3092\u884c\u3046\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002<\/span><br \/><span style=\"font-weight: 400;\">\u5168\u3066\u306e\u30e1\u30fc\u30eb\u306b\u5c0e\u5165\u3059\u308b\u306e\u306f\u3084\u3084\u30cf\u30fc\u30c9\u30eb\u304c\u9ad8\u3044\u3068\u3082\u3044\u3048\u307e\u3059\u304c\u3001\u9867\u5ba2\u3068\u3084\u308a\u53d6\u308a\u3059\u308b\u91cd\u8981\u306a\u30e1\u30fc\u30eb\u7b49\u3067\u306f\u3001S\/MIME\u4f7f\u3046\u3053\u3068\u3067\u5b89\u5168\u306b\u3084\u308a\u53d6\u308a\u3092\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><img decoding=\"async\" width=\"900\" height=\"500\" class=\"wp-image-2921\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/6-1.jpg\" alt=\"\u96fb\u5b50\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/6-1.jpg 900w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/6-1-300x167.jpg 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/6-1-768x427.jpg 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/6-1-480x267.jpg 480w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/figure>\r\n\r\n\r\n\r\n<p>&nbsp;<\/p>\r\n\r\n\r\n\r\n<h2 class=\"wp-block-heading\"><span class=\"ez-toc-section\" id=\"%E3%81%BE%E3%81%A8%E3%82%81\"><\/span>\u307e\u3068\u3081<span class=\"ez-toc-section-end\"><\/span><\/h2>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u3044\u304b\u304c\u3067\u3057\u305f\u304b\uff1f\u4eca\u56de\u306f\u96fb\u5b50\u7f72\u540d\u3068\u6697\u53f7\u5316\u306b\u3064\u3044\u3066\u7d39\u4ecb\u3057\u307e\u3057\u305f\u3002\u6700\u5f8c\u306b\u5185\u5bb9\u3092\u307e\u3068\u3081\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<ul class=\"wp-block-list\">\r\n<li><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u306f\u96fb\u5b50\u6587\u66f8\u3092\u6539\u3056\u3093\u3084\u306a\u308a\u3059\u307e\u3057\u304b\u3089\u5b88\u308b\u3053\u3068\u304c\u3067\u304d\u308b<\/span><\/li>\r\n<li><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u306f\u516c\u958b\u9375\u65b9\u5f0f\uff08RSA\u65b9\u5f0f\uff09\u3068\u3044\u3046\u6587\u66f8\u306e\u6697\u53f7\u5316\u65b9\u5f0f\u3067\u5229\u7528\u3055\u308c\u308b<\/span><\/li>\r\n<li><span style=\"font-weight: 400;\">\u516c\u958b\u9375\u65b9\u5f0f\uff08RSA\u65b9\u5f0f\uff09\u3067\u306f\u3001\u79d8\u5bc6\u9375\u3067\u6587\u66f8\u3092\u6697\u53f7\u5316\u3057\u3001\u516c\u958b\u9375\u3067\u5fa9\u5143\u3059\u308b<\/span><\/li>\r\n<li><span style=\"font-weight: 400;\">\u96fb\u5b50\u7f72\u540d\u306e\u5229\u7528\u6642\u306f\u3001\u4e8b\u524d\u306b\u96fb\u5b50\u8a3c\u660e\u66f8\u306e\u7533\u8acb\u304c\u5fc5\u8981<\/span><\/li>\r\n<li><span style=\"font-weight: 400;\">S\/MIME\uff08\u96fb\u5b50\u7f72\u540d\u4ed8\u304d\u30e1\u30fc\u30eb\uff09\u306f\u30d3\u30b8\u30cd\u30b9\u30e1\u30fc\u30eb\u8a50\u6b3a\u5bfe\u7b56\u306a\u3069\u306b\u6709\u52b9<\/span><\/li>\r\n<\/ul>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u4eca\u3084\u91cd\u8981\u6587\u66f8\u3084\u30e1\u30fc\u30eb\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u306f\u3001\u4f01\u696d\u306e\u793e\u4f1a\u7684\u4fe1\u983c\u3092\u5b88\u308b\u305f\u3081\u306b\u5fc5\u9808\u3067\u3059\u3002\u3053\u306e\u6a5f\u4f1a\u306b\u96fb\u5b50\u7f72\u540d\u3092\u4f7f\u3063\u305f\u6697\u53f7\u5316\u3092\u691c\u8a0e\u3055\u308c\u3066\u306f\u3044\u304b\u304c\u3067\u3057\u3087\u3046\u304b\uff1f<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u3053\u306e\u8a18\u4e8b\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3067\u304a\u60a9\u307f\u306e\u7686\u69d8\u306e\u304a\u5f79\u306b\u7acb\u3066\u3070\u5e78\u3044\u3067\u3059\uff01<\/span><\/p>\r\n\r\n\r\n\r\n<figure class=\"wp-block-image size-large\"><a href=\"https:\/\/www.dottedsign.com\/ja\/\" target=\"_blank\" rel=\"noopener\"><img decoding=\"async\" width=\"900\" height=\"500\" class=\"wp-image-2925\" src=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4.png\" alt=\"Dottedsign\" srcset=\"https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4.png 900w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4-300x167.png 300w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4-768x427.png 768w, https:\/\/www.dottedsign.com\/ja\/blog\/wp-content\/uploads\/2021\/03\/4-480x267.png 480w\" sizes=\"(max-width: 900px) 100vw, 900px\" \/><\/a><\/figure>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u6700\u5f8c\u306b\u53f0\u6e7e\u3067\u96fb\u5b50\u7f72\u540d\u306e\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3059\u308b Kdan\u793e\u306e <\/span><a href=\"https:\/\/www.dottedsign.com\/ja\/\" target=\"_blank\" rel=\"noreferrer noopener\"><span style=\"font-weight: 400;\">DottedSign<\/span><\/a><span style=\"font-weight: 400;\"> \u3092\u3054\u7d39\u4ecb\u3057\u307e\u3059\u3002Kdan\u793e\u306f\u53f0\u6e7e\u306b\u672c\u793e\u3092\u69cb\u3048\u3001\u30a2\u30e1\u30ea\u30ab\u3001\u30e8\u30fc\u30ed\u30c3\u30d1\u3001\u65e5\u672c\u306b\u96fb\u5b50\u7f72\u540d\u30af\u30e9\u30a6\u30c9\u30b5\u30fc\u30d3\u30b9\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u76f4\u611f\u7684\u306a\u64cd\u4f5c\u6027\u306e\u826f\u3055\u306e\u307b\u304b\u3001TLS \/ SSL\u3001AES-256\u3001RSA-2048\u306e\u6697\u53f7\u5316\u3092\u5c0e\u5165\u3057\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u9762\u306b\u3082\u5f37\u3044\u3053\u3068\u304c\u7279\u5fb4\u3067\u3059\u3002\u96fb\u5b50\u6587\u66f8\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u3068\u3057\u3066\u793e\u5185\u66f8\u985e\u304b\u3089\u7b2c\u4e09\u8005\u3068\u306e\u91cd\u8981\u6587\u66f8\u307e\u3067\u5e45\u5e83\u304f\u4f7f\u7528\u3067\u304d\u3001\u53f0\u6e7e\u3067\u306f\u3059\u3067\u306b500\u793e\u4ee5\u4e0a\u306b\u5c0e\u5165\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/span><\/p>\r\n\r\n\r\n\r\n<p><span style=\"font-weight: 400;\">\u65e5\u672c\u306e\u4f01\u696d\u304c\u63d0\u4f9b\u3059\u308b\u96fb\u5b50\u7f72\u540d\u3092\u53f0\u6e7e\u3067\u4f7f\u304a\u3046\u3068\u3059\u308b\u3068\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3084\u8a8d\u8a3c\u5c40\u3001\u8a00\u8a9e\u304c\u554f\u984c\u306b\u306a\u308a\u307e\u3059\u304c\u3001DottedSign 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