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<strong>\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3<\/strong> - \u6280\u8853\u7684\u306a\u5c02\u9580\u7528\u8a9e\u3092\u4f7f\u308f\u305a\u306b\u3002\u3053\u3053\u3067\u306f\u3001S\/MIME\u3068OpenPGP\u3092\u4f7f\u7528\u3057\u3066\u6a5f\u5bc6\u60c5\u5831\u306e\u9001\u4fe1\u3092\u5b89\u5168\u306b\u3057\u3001\u6f5c\u5728\u7684\u306a\u653b\u6483\u304b\u3089\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3092\u4fdd\u8b77\u3059\u308b\u65b9\u6cd5\u3092\u7d39\u4ecb\u3057\u307e\u3059\u3002<\/p>\n\n<h2>\u4e2d\u5fc3\u70b9<\/h2>\n<ul>\n  <li><strong>\u975e\u5bfe\u79f0\u6697\u53f7\u5316<\/strong> \u79d8\u5bc6\u9375\u3068\u516c\u958b\u9375\u3067\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u52b9\u679c\u7684\u306b\u4fdd\u8b77\u3059\u308b\u3002<\/li>\n  <li><strong>\u30aa\u30fc\u30d7\u30f3PGP<\/strong> \u305d\u3057\u3066 <strong>S\/MIME<\/strong> \u306f\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e2\u5927\u6a19\u6e96\u3067\u3042\u308b\u3002<\/li>\n  <li>\u4edd 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<strong>S\/MIME<\/strong> \u305d\u3057\u3066 <strong>\u30aa\u30fc\u30d7\u30f3PGP<\/strong>.<\/p>\n<ul>\n  <li><strong>S\/MIME<\/strong> \u306f\u3001\u30c8\u30e9\u30b9\u30c8\u30bb\u30f3\u30bf\u30fc\u306a\u3069\u306e\u516c\u5f0f\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u304c\u767a\u884c\u3057\u305f\u30c7\u30b8\u30bf\u30eb\u8a3c\u660e\u66f8\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002Outlook\u3084Apple Mail\u306a\u3069\u306e\u591a\u304f\u306e\u96fb\u5b50\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u306f\u3001\u3059\u3067\u306b\u30c7\u30d5\u30a9\u30eb\u30c8\u3067\u3053\u306e\u624b\u9806\u3092\u30b5\u30dd\u30fc\u30c8\u3057\u3066\u3044\u308b\u3002<\/li>\n  <li><strong>\u30aa\u30fc\u30d7\u30f3PGP<\/strong> 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href=\"https:\/\/webhosting.de\/ja\/%e9%9b%bb%e5%ad%90%e3%83%a1%e3%83%bc%e3%83%ab%e3%81%ae%e6%9a%97%e5%8f%b7%e5%8c%96%e6%8c%87%e7%a4%ba%e3%81%ab%e3%82%88%e3%82%8b%e5%ae%89%e5%85%a8%e3%81%aa%e9%80%9a%e4%bf%a1\/\">\u5b89\u5168\u306a\u901a\u4fe1\u306e\u305f\u3081\u306e\u4e0a\u7d1a\u30ac\u30a4\u30c9<\/a>.<\/p>\n\n<h3>\u8a3c\u660e\u66f8\u3068\u9375\u306e\u9055\u3044<\/h3>\n<p>OpenPGP\u3068S\/MIME\u306e\u3069\u3061\u3089\u3092\u4f7f\u3046\u304b\u306f\u3001\u591a\u304f\u306e\u5834\u5408\u3001\u3042\u306a\u305f\u306e\u8981\u4ef6\u3068\u500b\u4eba\u306eIT\u30a4\u30f3\u30d5\u30e9\u306b\u4f9d\u5b58\u3057\u307e\u3059\u3002S\/MIME\u3067\u306f\u3001\u3042\u306a\u305f\u306e\u8eab\u5143\u3068\u96fb\u5b50\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u3092\u78ba\u8a8d\u3059\u308b\u516c\u5f0f\u306e\u8a3c\u660e\u66f8\u3092\u53d6\u5f97\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u3053\u306e\u8a3c\u660e\u66f8\u306fID\u30bb\u30f3\u30bf\u30fc\u307e\u305f\u306f\u30c8\u30e9\u30b9\u30c8\u30bb\u30f3\u30bf\u30fc\u304b\u3089\u53d6\u5f97\u3055\u308c\u3001\u7279\u5b9a\u306e\u6709\u52b9\u671f\u9593\u304c\u3042\u308a\u307e\u3059\u3002\u8a8d\u8a3c\u5c40\uff08CA\uff09\u306f\u3001\u3042\u306a\u305f\u304c\u672c\u5f53\u306b\u3053\u306e\u96fb\u5b50\u30e1\u30fc\u30eb\u30a2\u30c9\u30ec\u30b9\u306e\u6240\u6709\u8005\u3067\u3042\u308b\u304b\u3069\u3046\u304b\u3092\u30c1\u30a7\u30c3\u30af\u3057\u307e\u3059\u3002\u3053\u306e\u624b\u9806\u306b\u3088\u308a\u3001\u7f72\u540d\u306e\u4fe1\u983c\u6027\u304c\u9ad8\u307e\u308a\u307e\u3059\u3002\u4e00\u65b9\u3001OpenPGP\u306f\u5206\u6563\u578b\u306e\u4fe1\u983c\u69cb\u9020\u306b\u4f9d\u5b58\u3057\u3066\u3044\u307e\u3059\u3002\u9375\u30da\u30a2\u3092\u81ea\u5206\u3067\u751f\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u8a8d\u8a3c\u5c40\u306b\u9023\u7d61\u3059\u308b\u5fc5\u8981\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u305d\u306e\u4ee3\u308f\u308a\u3001\u3044\u308f\u3086\u308b \"\u4fe1\u983c\u306e\u7db2 \"\u304c\u5927\u304d\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u53c2\u52a0\u8005\u540c\u58eb\u304c\u4e92\u3044\u306e\u9375\u3092\u8a8d\u8a3c\u3057\u5408\u3046\u3002<\/p>\n<p>\u3057\u304b\u3057\u3001\u5b9f\u969b\u306b\u306f\u3069\u3061\u3089\u306e\u65b9\u5f0f\u3082\u3001\u516c\u958b\u9375\u304c\u6e21\u3055\u308c\u3001\u79d8\u5bc6\u9375\u306f\u6240\u6709\u8005\u304c\u5b89\u5168\u306b\u4fdd\u7ba1\u3059\u308b\u3068\u3044\u3046\u3001\u3088\u304f\u4f3c\u305f\u4ed5\u7d44\u307f\u306b\u306a\u3063\u3066\u3044\u308b\u3002\u4fe1\u983c\u6027\u306e\u9ad8\u3044\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3068\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u3067\u3001\u3069\u3061\u3089\u306e\u898f\u683c\u3082\u771f\u306e\u30c7\u30fc\u30bf\u4fdd\u8b77\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/06\/email-verschluesselung-guide-7421.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316\u3092\u8a2d\u5b9a\u3059\u308b\u624b\u9806<\/h2>\n<p>\u3053\u306e\u624b\u9806\u306b\u3088\u308a\u3001\u4eca\u5f8c\u306f\u5b89\u5168\u306b\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3067\u304d\u308b\u3088\u3046\u306b\u306a\u308a\u307e\u3059\u3002<\/p>\n\n<h3>1. \u6697\u53f7\u5316\u53ef\u80fd\u306a\u96fb\u5b50\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u3092\u9078\u629e\u3059\u308b\u3002<\/h3>\n<p>Mozilla Thunderbird\u3001Microsoft Outlook\u3001Apple Mail\u306f\u3001S\/MIME\u3068OpenPGP\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u4e00\u822c\u7684\u306a\u30d7\u30ed\u30b0\u30e9\u30e0\u3067\u3059\u3002\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u3082\u3042\u308b\u3002 <strong>webhoster.de<\/strong> 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\u30ad\u30fc\u3092\u30e1\u30fc\u30eb\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u7d71\u5408\u3059\u308b\u3002<\/h3>\n<p>\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u306e\u8a2d\u5b9a\u3067\u3001\u79d8\u5bc6\u9375\u3092\u76f4\u63a5\u30a4\u30f3\u30dd\u30fc\u30c8\u307e\u305f\u306f\u4f5c\u6210\u3057\u307e\u3059\u3002\u307b\u3068\u3093\u3069\u306e\u30d7\u30ed\u30b0\u30e9\u30e0\u306b\u306f\u3001\u3053\u306e\u305f\u3081\u306e\u7d71\u5408\u3055\u308c\u305f\u30a4\u30f3\u30bf\u30fc\u30d5\u30a7\u30a4\u30b9\u304c\u3042\u308b\u304b\u3001\u79d8\u5bc6\u9375\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u542b\u3080\u30bb\u30c3\u30c8\u30a2\u30c3\u30d7\u30d7\u30ed\u30bb\u30b9\u3092\u81ea\u52d5\u7684\u306b\u30ac\u30a4\u30c9\u3057\u307e\u3059\u3002<\/p>\n\n<h3>4. \u9023\u7d61\u5148\u3068\u516c\u958b\u9375\u3092\u4ea4\u63db\u3059\u308b<\/h3>\n<p>\u516c\u958b\u9375\u306e\u5b89\u5168\u306a\u4ea4\u63db\u306f\u7d76\u5bfe\u306b\u4e0d\u53ef\u6b20\u3067\u3042\u308b\u3002\u3053\u308c\u306f\u3001\u30d5\u30a1\u30a4\u30eb\u6dfb\u4ed8\uff08.asc\u30d5\u30a1\u30a4\u30eb\u306a\u3069\uff09\u3001\u9375\u30b5\u30fc\u30d0\u30fc\u7d4c\u7531\u3001\u3042\u308b\u3044\u306f\u7f72\u540d\u4ed8\u304d\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u53d7\u4fe1\u5f8c\u306b\u81ea\u52d5\u7684\u306b\u53ef\u80fd\u3067\u3042\u308b\u3002\u305d\u306e\u5f8c <strong>\u30a8\u30f3\u30c9\u30fb\u30c4\u30fc\u30fb\u30a8\u30f3\u30c9\u306e\u6697\u53f7\u5316<\/strong> \u554f\u984c\u306a\u304f\u30b9\u30bf\u30fc\u30c8\u3059\u308b\u3002<\/p>\n\n<h3>5. \u6697\u53f7\u5316\u3055\u308c\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u9001\u4fe1<\/h3>\n<p>\u65b0\u3057\u3044\u30e1\u30fc\u30eb\u3092\u4f5c\u6210\u3059\u308b\u969b\u3001\u300c\u6697\u53f7\u5316\u300d\u30aa\u30d7\u30b7\u30e7\u30f3\u3092\u6709\u52b9\u306b\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30e1\u30fc\u30eb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u81ea\u52d5\u7684\u306b\u53d7\u4fe1\u8005\u306e\u516c\u958b\u9375\u3092\u4f7f\u7528\u3057\u307e\u3059\u3002\u3053\u308c\u306f\u3001\u53d7\u4fe1\u8005\u3060\u3051\u304c\u79d8\u5bc6\u9375\u3092\u4f7f\u3063\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u958b\u304f\u3053\u3068\u304c\u3067\u304d\u308b\u3053\u3068\u3092\u610f\u5473\u3057\u307e\u3059\u3002<\/p>\n\n<h3>\u30e2\u30d0\u30a4\u30eb\u6a5f\u5668\u3067\u306e\u4f7f\u7528<\/h3>\n<p>\u5916\u51fa\u5148\u3067\u6697\u53f7\u5316\u3055\u308c\u305f\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u8aad\u307f\u66f8\u304d\u3057\u305f\u3044\u5834\u5408\u306f\u3001\u30b9\u30de\u30fc\u30c8\u30d5\u30a9\u30f3\u306b\u9069\u3057\u305f\u30a2\u30d7\u30ea\u3084\u8a2d\u5b9a\u3092\u9078\u629e\u3059\u308b\u5fc5\u8981\u304c\u3042\u308b\u3002iOS\u30c7\u30d0\u30a4\u30b9\u3067\u306f\u3001\u3059\u3067\u306bS\/MIME\u304c\u7d71\u5408\u30b5\u30dd\u30fc\u30c8\u3055\u308c\u3066\u3044\u307e\u3059\u3002OpenPGP\u306b\u3064\u3044\u3066\u306f\u3001OpenKeychain\uff08Android\uff09\u3084Canary Mail\uff08iOS\uff09\u306a\u3069\u306e\u30a2\u30d7\u30ea\u304c\u4fbf\u5229\u306a\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u63d0\u4f9b\u3057\u3066\u3044\u307e\u3059\u3002\u9375\u3092\u30e2\u30d0\u30a4\u30eb\u30fb\u30c7\u30d0\u30a4\u30b9\u306b\u8ee2\u9001\u3059\u308b\u3053\u3068\u3082\u91cd\u8981\u3067\u3059\u304c\u3001\u3053\u308c\u306b\u306f\u6e96\u5099\u304c\u5fc5\u8981\u306a\u5834\u5408\u304c\u3042\u308a\u307e\u3059\u3002\u6697\u53f7\u5316\u3055\u308c\u305f\u30d5\u30a1\u30a4\u30eb\u8ee2\u9001\u3084\u30d1\u30b9\u30ef\u30fc\u30c9\u3067\u4fdd\u8b77\u3055\u308c\u305f\u30b3\u30f3\u30c6\u30ca\u306a\u3069\u3001\u5b89\u5168\u306a\u65b9\u6cd5\u3092\u5fc5\u305a\u4f7f\u7528\u3057\u3066\u304f\u3060\u3055\u3044\u3002\u30e2\u30d0\u30a4\u30eb\u30fb\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306e\u8a2d\u5b9a\u30df\u30b9\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u8106\u5f31\u6027\u306e\u6700\u3082\u4e00\u822c\u7684\u306a\u539f\u56e0\u306e\u4e00\u3064\u3067\u3042\u308b\u3002<\/p>\n\n<h3>\u30ad\u30fc\u30fb\u30a2\u30af\u30bb\u30b9\u306e\u305f\u3081\u306e\u591a\u8981\u7d20\u8a8d\u8a3c<\/h3>\n<p>\u79d8\u5bc6\u9375\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u3055\u3089\u306b\u5b89\u5168\u306b\u3059\u308b\u65b9\u6cd5\u3092\u691c\u8a0e\u3059\u308b\u3002\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u3084\u7279\u5225\u306a\u30c4\u30fc\u30eb\u306e\u4e2d\u306b\u306f\u3001\u5fa9\u53f7\u5316\u306e\u305f\u3081\u306e\u4e00\u7a2e\u306e\u591a\u8981\u7d20\u8a8d\u8a3c\uff08MFA\uff09\u3092\u53ef\u80fd\u306b\u3059\u308b\u3082\u306e\u3082\u3042\u308b\u3002\u4f8b\u3048\u3070\u3001\u79d8\u5bc6\u9375\u306e\u30d1\u30b9\u30d5\u30ec\u30fc\u30ba\u3092\u8981\u6c42\u3057\u3001\u8a8d\u8a3c\u30a2\u30d7\u30ea\u3084\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30c8\u30fc\u30af\u30f3\u3092\u7d71\u5408\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u5fa9\u53f7\u5316\u306e\u969b\u306b\u5165\u529b\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u30e9\u30f3\u30c0\u30e0\u306a\u78ba\u8a8d\u30b3\u30fc\u30c9\u304c\u751f\u6210\u3055\u308c\u308b\u3002\u5c11\u3057\u624b\u9593\u306f\u304b\u304b\u308b\u304c\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306f\u683c\u6bb5\u306b\u5411\u4e0a\u3059\u308b\u3002\u7279\u306b\u30d3\u30b8\u30cd\u30b9\u30fb\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u304a\u3044\u3066\u306f\u3001\u30c7\u30d0\u30a4\u30b9\u306e\u7d1b\u5931\u3084\u76d7\u96e3\u306b\u3088\u308b\u60aa\u7528\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u3053\u306e\u3088\u3046\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30ec\u30d9\u30eb\u3092\u8ffd\u52a0\u3059\u308b\u3053\u3068\u306f\u6975\u3081\u3066\u91cd\u8981\u3067\u3042\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/06\/email-verschluesselung-sicherheit-7425.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306b\u3088\u308b\u4fdd\u8b77<\/h2>\n<p>\u6697\u53f7\u5316\u306b\u52a0\u3048\u3066\u3001\u30e1\u30fc\u30eb\u306b\u7f72\u540d\u3059\u308b\u3053\u3068\u3082\u3067\u304d\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u53d7\u4fe1\u8005\u306f\u672c\u5f53\u306b\u3042\u306a\u305f\u304b\u3089\u306e\u30e1\u30fc\u30eb\u3067\u3042\u308b\u3068\u3044\u3046\u78ba\u4fe1\u3092\u5f97\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u307e\u305f\u3001\u8ab0\u304b\u304c\u5f8c\u304b\u3089\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u5909\u66f4\u3057\u305f\u5834\u5408\u306b\u3082\u3001\u3059\u3050\u306b\u6c17\u3065\u304f\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u3053\u306e\u7f72\u540d\u306f\u3001\u9001\u4fe1\u8005\u306e\u516c\u958b\u9375\u3092\u4f7f\u3063\u3066\u691c\u8a3c\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u3001\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u3084\u306a\u308a\u3059\u307e\u3057\u304b\u3089\u3055\u3089\u306b\u5b88\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n<p>\u305f\u3068\u3048\u7121\u5bb3\u306a\u30e1\u30fc\u30eb\u3067\u3042\u3063\u3066\u3082\u3001\u3053\u306e\u6a5f\u80fd\u3092\u5e38\u306b\u6709\u52b9\u306b\u3057\u3066\u304a\u304f\u3053\u3068\u3092\u304a\u52e7\u3081\u3057\u307e\u3059\u3002\u8ffd\u52a0\u306e\u4f5c\u696d\u306f\u5fc5\u8981\u3042\u308a\u307e\u305b\u3093\u304c\u3001\u3042\u306a\u305f\u306e\u4fe1\u983c\u6027\u304c\u975e\u5e38\u306b\u9ad8\u307e\u308a\u307e\u3059\u3002<\/p>\n\n<h3>\u6697\u53f7\u5316\u3068\u7f72\u540d\uff1a\u305d\u306e\u9055\u3044\u306f\uff1f<\/h3>\n<p>\u6697\u53f7\u5316\u306f\u4e3b\u306b\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u6a5f\u5bc6\u6027\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u3092\u76ee\u7684\u3068\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u7f72\u540d\u306f\u5b8c\u5168\u6027\u3068\u771f\u6b63\u6027\u3092\u4fdd\u8a3c\u3057\u307e\u3059\u3002\u3064\u307e\u308a\u3001\u9001\u4fe1\u8005\u3067\u3042\u308b\u3042\u306a\u305f\u4ee5\u5916\u306e\u8ab0\u3082\u7f72\u540d\u3092\u4f5c\u6210\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u305a\u3001\u540c\u6642\u306b\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u304c\u5909\u66f4\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u4e21\u65b9\u306e\u65b9\u6cd5\u3092\u7d44\u307f\u5408\u308f\u305b\u308b\u3053\u3068\u306f\u3001\u5b8c\u5168\u306b\u53ef\u80fd\u3067\u3042\u308a\u3001\u4e00\u822c\u7684\u3067\u3059\uff1a\u307e\u305a\u96fb\u5b50\u30e1\u30fc\u30eb\u306b\u7f72\u540d\u3057\u3001\u305d\u308c\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002\u53d7\u4fe1\u8005\u306f\u3001\u9001\u4fe1\u8005\u304c\u672c\u7269\u3067\u3042\u308b\u3053\u3068\u3068\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u672c\u6587\u304c\u5909\u66f4\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u306e\u4e21\u65b9\u3092\u78ba\u8a8d\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n<h2>\u4f01\u696d\u306b\u304a\u3051\u308b\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316<\/h2>\n<p>\u4f55\u767e\u4eba\u3082\u306e\u5f93\u696d\u54e1\u3068\u624b\u4f5c\u696d\u3067\u9375\u3092\u4ea4\u63db\u3059\u308b\u3053\u3068\u306f\u3001\u4f01\u696d\u306b\u3068\u3063\u3066\u96e3\u984c\u3067\u3042\u308b\u3002\u305d\u3053\u3067 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class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/06\/email-sicherheit-leitfaden-2398.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u5178\u578b\u7684\u306a\u30df\u30b9\u3092\u907f\u3051\u308b<\/h2>\n<p>OpenPGP\u3067\u3088\u304f\u3042\u308b\u9593\u9055\u3044\u306f\u3001\u79d8\u5bc6\u9375\u306e\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u3092\u4f5c\u6210\u3057\u306a\u3044\u3053\u3068\u3067\u3059\u3002\u3053\u308c\u304c\u5931\u308f\u308c\u308b\u3068\u3001\u3059\u3079\u3066\u306e\u30e1\u30fc\u30eb\u306f\u6c38\u4e45\u306b\u30d6\u30ed\u30c3\u30af\u3055\u308c\u305f\u307e\u307e\u3068\u306a\u308a\u3001\u5fa9\u65e7\u306f\u4e0d\u53ef\u80fd\u3068\u306a\u308b\u3002<\/p>\n<p>S\/MIME\u306e\u6709\u52b9\u671f\u9650\u304c\u5207\u308c\u305f\u308a\u3001\u7121\u52b9\u306a\u8a3c\u660e\u66f8\u306f\u3001\u5b89\u5168\u306a\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3082\u30d6\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u3001\u79c1\u306f\u5b9a\u671f\u7684\u306b\u6709\u52b9\u6027\u3092\u30c1\u30a7\u30c3\u30af\u3057\u3001\u671f\u9650\u5207\u308c\u306e\u9375\u306f\u9069\u5207\u306b\u66f4\u65b0\u3057\u3066\u3044\u308b\u3002<\/p>\n<p>\u3055\u3089\u306b\u3001\u30b7\u30b9\u30c6\u30e0\u304c\u53e4\u3044\u3082\u306e\u3067\u3042\u3063\u3066\u306f\u306a\u3089\u306a\u3044\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3068TLS 1.2+\u306b\u3088\u308b\u5b89\u5b9a\u3057\u305f\u63a5\u7d9a\u306f\u5fc5\u9808\u3067\u3042\u308b\u3002\u305d\u306e\u4ed6\u306e\u30d2\u30f3\u30c8\u306f <a href=\"https:\/\/webhosting.de\/ja\/%e9%9b%bb%e5%ad%90%e3%83%a1%e3%83%bc%e3%83%ab%e3%83%bb%e3%82%bb%e3%82%ad%e3%83%a5%e3%83%aa%e3%83%86%e3%82%a3-plesk%e3%81%ae%e3%83%92%e3%83%b3%e3%83%88-2025%e5%b9%b4%e3%81%ae%e4%bf%9d%e8%ad%b7\/\">\u3053\u306e\u96fb\u5b50\u30e1\u30fc\u30eb\u901a\u4fe1\u306e\u305f\u3081\u306e\u5305\u62ec\u7684\u306a\u4fdd\u8b77\u30ac\u30a4\u30c9<\/a>.<\/p>\n\n<h3>\u5b9a\u671f\u7684\u306a\u76e3\u67fb\u3068\u5b89\u5168\u30c1\u30a7\u30c3\u30af<\/h3>\n<p>\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316\u306b\u771f\u5263\u306b\u53d6\u308a\u7d44\u3093\u3067\u3044\u308b\u4eba\u306f\u3001\u5c11\u306a\u304f\u3068\u3082\u5e74\u306b\u4e00\u5ea6\u306f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u76e3\u67fb\u3092\u5b9f\u65bd\u3059\u3079\u304d\u3067\u3042\u308b\u3002\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306e\u30a2\u30c3\u30d7\u30c7\u30fc\u30c8\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3060\u3051\u3067\u306a\u304f\u3001\u5b9f\u969b\u306e\u9375\u69cb\u9020\u3084\u8a3c\u660e\u66f8\u3092\u30c6\u30b9\u30c8\u3059\u308b\u3053\u3068\u3082\u610f\u5473\u3059\u308b\u3002\u4f8b\u3048\u3070\u3001\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u9375\u304c\u307e\u3060\u6709\u52b9\u304b\u3069\u3046\u304b\u3001\u305d\u306e\u9593\u306b\u5f93\u696d\u54e1\u304c\u9000\u8077\u3057\u3066\u3044\u306a\u3044\u304b\u3069\u3046\u304b\u3001\u53e4\u3044\u8a3c\u660e\u66f8\u304c\u307e\u3060\u6d41\u901a\u3057\u3066\u3044\u306a\u3044\u304b\u3069\u3046\u304b\u306a\u3069\u3092\u30c1\u30a7\u30c3\u30af\u3059\u308b\u3002\u79d8\u5bc6\u9375\u304c\u4e0d\u8981\u306b\u306a\u3063\u305f\u308a\u3001\u5371\u6b86\u5316\u3057\u305f\u308a\u3057\u305f\u5834\u5408\u306f\u3001\u76f4\u3061\u306b\u5931\u52b9\u3055\u305b\u308b\u3053\u3068\u304c\u91cd\u8981\u3067\u3042\u308b\u3002<\/p>\n<p>\u3082\u30461\u3064\u306e\u30dd\u30a4\u30f3\u30c8\u306f\u3001\u6697\u53f7\u5316\u30ad\u30fc\u3068\u7f72\u540d\u30ad\u30fc\u306b\u5f37\u529b\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u5f37\u5236\u3059\u308b\u3053\u3068\u3067\u3059\u3002\u4f8b\u3048\u3070\u3001PGP\u306e\u79d8\u5bc6\u9375\u306e\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u77ed\u3059\u304e\u305f\u308a\u3001\u5358\u7d14\u3059\u304e\u305f\u308a\u3059\u308b\u3068\u3001\u653b\u6483\u8005\u306f\u7dcf\u5f53\u305f\u308a\u3067\u9375\u3092\u89e3\u8aad\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u5b9a\u671f\u7684\u306a\u76e3\u67fb\u306b\u3088\u3063\u3066\u3001\u5e38\u306b\u6982\u8981\u3092\u628a\u63e1\u3057\u3001\u5927\u304d\u306a\u30ea\u30b9\u30af\u306b\u306a\u308b\u524d\u306b\u5c0f\u3055\u306a\u30ae\u30e3\u30c3\u30d7\u3092\u57cb\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/06\/email-verschluesselung-guide-7294.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u30db\u30b9\u30c6\u30a3\u30f3\u30b0\u30d7\u30ed\u30d0\u30a4\u30c0\u30fc\u306e\u6bd4\u8f03<\/h2>\n<table>\n  <thead>\n    <tr>\n      <th>\u5834\u6240<\/th>\n      <th>\u30d7\u30ed\u30d0\u30a4\u30c0<\/th>\n      <th>\u6697\u53f7\u5316<\/th>\n      <th>\u7279\u5225\u306a\u6a5f\u80fd<\/th>\n    <\/tr>\n  <\/thead>\n  <tbody>\n    <tr>\n      <td>1<\/td>\n      <td>webhoster.de<\/td>\n      <td>S\/MIME\u3001OpenPGP<\/td>\n      <td>\u6700\u5927\u9650\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3001\u30b7\u30f3\u30d7\u30eb\u306a\u7ba1\u7406\u3001GDPR\u30b3\u30f3\u30d7\u30e9\u30a4\u30a2\u30f3\u30b9<\/td>\n    <\/tr>\n    <tr>\n      <td>2<\/td>\n      <td>\u30d7\u30ed\u30d0\u30a4\u30c0\u30fcB<\/td>\n      <td>S\/MIME\u3001PGP<\/td>\n      <td>\u512a\u308c\u305f\u7d71\u5408\u3001\u5805\u5b9f\u306a\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9<\/td>\n    <\/tr>\n    <tr>\n      <td>3<\/td>\n      <td>\u30d7\u30ed\u30d0\u30a4\u30c0\u30fcC<\/td>\n      <td>S\/MIME<\/td>\n      <td>\u7c21\u5358\u306a\u8a3c\u660e\u66f8\u306e\u7d71\u5408<\/td>\n    <\/tr>\n  <\/tbody>\n<\/table>\n\n\n<figure class=\"wp-block-image size-full is-resized\">\n  <img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/webhosting.de\/wp-content\/uploads\/2025\/06\/email-verschluesselung-datenschutz-6743.webp\" alt=\"\" width=\"1536\" height=\"1024\"\/>\n<\/figure>\n\n\n<h2>FAQ - \u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316\u306b\u95a2\u3059\u308b\u3088\u304f\u3042\u308b\u8cea\u554f<\/h2>\n<ul>\n  <li><strong>\u5e38\u306b\u624b\u52d5\u3067\u6697\u53f7\u5316\u3092\u6709\u52b9\u306b\u3057\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u306e\u3067\u3059\u304b\uff1f<\/strong><br>\u3044\u3044\u3048\u3001\u591a\u304f\u306e\u30af\u30e9\u30a4\u30a2\u30f3\u30c8\u306f\u3001\u516c\u958b\u9375\u304c\u3059\u3067\u306b\u5229\u7528\u53ef\u80fd\u3067\u3042\u308c\u3070\u3001\u81ea\u52d5\u7684\u306b\u6697\u53f7\u5316\u3057\u307e\u3059\u3002<\/li>\n  <li><strong>\u7121\u6599\u306e\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u3092\u4f7f\u3046\u3053\u3068\u306f\u3067\u304d\u307e\u3059\u304b\uff1f<\/strong><br>\u306f\u3044\u3001OpenPGP\u306f\u7121\u6599\u3067\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u65b9\u6cd5\u3067\u3059\u3002<\/li>\n  <li><strong>\u79d8\u5bc6\u9375\u304c\u306a\u3044\u3068\u3069\u3046\u306a\u308b\u306e\u304b\uff1f<\/strong><br>\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u304c\u306a\u3051\u308c\u3070\u3001\u53e4\u3044\u6697\u53f7\u5316\u3055\u308c\u305f\u30e1\u30c3\u30bb\u30fc\u30b8\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u6c38\u4e45\u306b\u5931\u3046\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002<\/li>\n  <li><strong>\u516c\u958b\u9375\u306e\u914d\u5e03\u65b9\u6cd5\u3092\u6559\u3048\u3066\u304f\u3060\u3055\u3044\u3002<\/strong><br>\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3068\u3057\u3066\u3001\u30ad\u30fc\u30b5\u30fc\u30d0\u30fc\u7d4c\u7531\u3067\u3001\u307e\u305f\u306f\u7f72\u540d\u3055\u308c\u305f\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u901a\u3058\u3066\u3002<\/li>\n<\/ul>\n\n<h2>\u7d50\u8ad6\uff1a\u5b89\u5168\u306a\u30b3\u30df\u30e5\u30cb\u30b1\u30fc\u30b7\u30e7\u30f3 - \u305d\u308c\u306f\u7c21\u5358\u3060<\/h2>\n<p>\u9069\u5207\u306a\u6307\u793a\u304c\u3042\u308c\u3070\u3001\u6b21\u306e\u3053\u3068\u3092\u59cb\u3081\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002 <strong>\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316<\/strong> 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