{"id":13265,"date":"2025-01-10T10:00:00","date_gmt":"2025-01-10T01:00:00","guid":{"rendered":"https:\/\/www.kagoya.jp\/howto\/?p=13265"},"modified":"2025-01-10T11:21:19","modified_gmt":"2025-01-10T02:21:19","slug":"email_encryption","status":"publish","type":"post","link":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/","title":{"rendered":"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac"},"content":{"rendered":"\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/email_encryption.jpg\" alt=\"\" class=\"wp-image-13933\"\/><\/figure>\n\n\n\n<p>\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306b\u3088\u3063\u3066\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306b\u3088\u308b\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u5bfe\u7b56\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3001\u30e1\u30fc\u30eb\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u7b2c\u4e00\u306b\u884c\u3046\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002\u7ba1\u7406\u8005\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6982\u8981\u3084\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u628a\u63e1\u3057\u3066\u304a\u304b\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u4f55\u304b\u3084\u305d\u306e\u4ed5\u7d44\u307f\u3001\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u81ea\u793e\u304c\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u304b\u628a\u63e1\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f | \u30e1\u30fc\u30eb\u3092\u6697\u53f7\u5316\u3057\u6f0f\u3048\u3044\u3084\u6539\u3056\u3093\u3092\u9632\u3050\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<p>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u30e1\u30fc\u30eb\u306e\u672c\u6587\u3084\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u6697\u53f7\u5316\u3057\u3001\u60c5\u5831\u6f0f\u3048\u3044\u3084\u6539\u3056\u3093\u3068\u3044\u3063\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u4e88\u9632\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u3092\u306f\u3058\u3081\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3067\u3084\u308a\u53d6\u308a\u3055\u308c\u308b\u30c7\u30fc\u30bf\u306f\u3001\u76d7\u8074\u3084\u6539\u3056\u3093\u306a\u3069\u306e\u8105\u5a01\u306b\u3055\u3089\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u6697\u53f7\u5316\u306e\u3088\u3046\u306a\u3001\u9632\u5fa1\u306e\u4ed5\u7d44\u307f\u304c\u5fc5\u8981\u3068\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u306b\u306f\u500b\u4eba\u60c5\u5831\u3084\u53d6\u5f15\u5148\u3068\u306e\u30d3\u30b8\u30cd\u30b9\u306b\u95a2\u3059\u308b\u3084\u308a\u53d6\u308a\u306a\u3069\u3001\u6f0f\u3048\u3044\u3057\u305f\u5834\u5408\u306e\u30ea\u30b9\u30af\u304c\u9ad8\u3044\u30c7\u30fc\u30bf\u304c\u591a\u304f\u542b\u307e\u308c\u308b\u3068\u8003\u3048\u3089\u308c\u307e\u3059\u3002\u4f55\u3082\u5bfe\u7b56\u3092\u305b\u305a\u81ea\u793e\u30e1\u30fc\u30eb\u306e\u5185\u5bb9\u304c\u6f0f\u3048\u3044\u3059\u308c\u3070\u3001\u9867\u5ba2\u3084\u53d6\u5f15\u5148\u304b\u3089\u306e\u4fe1\u983c\u3092\u5931\u3046\u3053\u3068\u306b\u306a\u308a\u304b\u306d\u306a\u3044\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u304c\u5fc5\u8981\u3068\u306a\u308b\u7406\u7531<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/avoidlist.jpeg\" alt=\"\" class=\"wp-image-12856\"\/><\/figure>\n\n\n\n<p>\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u5834\u5408\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u5fc5\u9808\u3068\u3044\u3048\u307e\u3059\u3002\u4ee5\u4e0b\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u304c\u5fc5\u8981\u3068\u306a\u308b\u7406\u7531\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u3057\u306a\u3051\u308c\u3070\u3001\u30e1\u30fc\u30eb\u306f\u8ab0\u3067\u3082\u8aad\u3081\u308b\u72b6\u614b\u3067\u9001\u53d7\u4fe1\u3055\u308c\u308b<\/h3>\n\n\n\n<p>\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3078\u6d41\u308c\u308b\u30c7\u30fc\u30bf\u306f\u3001\u4f55\u3082\u3057\u306a\u3051\u308c\u3070\u5e73\u6587\u3068\u3044\u3063\u3066\u8ab0\u3067\u3082\u8aad\u3081\u308b\u72b6\u614b\u306b\u306a\u3063\u3066\u3044\u307e\u3059\u3002\u30e1\u30fc\u30eb\u3082\u4f8b\u5916\u3067\u306a\u304f\u3001\u6697\u53f7\u5316\u3092\u3057\u306a\u3044\u3068\u5e73\u6587\u3067\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u6d41\u308c\u308b\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u8ab0\u3082\u304c\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306f\u3001\u516c\u9053\u306e\u3088\u3046\u306a\u3082\u306e\u3068\u8a00\u3048\u307e\u3059\u3002\u516c\u9053\u4e0a\u3067\u304a\u3053\u306a\u308f\u308c\u308b\u4f1a\u8a71\u306f\u3001\u8033\u3092\u50be\u3051\u3055\u3048\u3059\u308c\u3070\u8ab0\u306b\u3067\u3082\u805e\u304b\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3067\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u305d\u308c\u3068\u540c\u3058\u3053\u3068\u3067\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u6d41\u308c\u308b\u30e1\u30fc\u30eb\u3082\u6697\u53f7\u5316\u3057\u306a\u3051\u308c\u3070\u3001\u8ab0\u3067\u3082\u7c21\u5358\u306b\u8aad\u3081\u308b\u72b6\u614b\u3068\u306a\u308b\u306e\u3067\u3059\u3002\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u3078\u5e73\u6587\u306e\u307e\u307e\u6d41\u308c\u308b\u30c7\u30fc\u30bf\u3092\u508d\u53d7\u3059\u308b\u306e\u306b\u3001\u9ad8\u3044\u6280\u8853\u529b\u3084\u8a2d\u5099\u306f\u5fc5\u8981\u3068\u3055\u308c\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u3059\u308b\u3053\u3068\u3067\u3001\u60c5\u5831\u306e\u6f0f\u3048\u3044\u306a\u3069\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u3092\u672a\u7136\u306b\u9632\u3052\u308b<\/h3>\n\n\n\n<p>\u30e1\u30fc\u30eb\u304c\u6697\u53f7\u5316\u3055\u308c\u305a\u5e73\u6587\u306e\u307e\u307e\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u4e0a\u306b\u9001\u4fe1\u3055\u308c\u308b\u3068\u3001\u60aa\u610f\u306e\u3042\u308b\u7b2c\u4e09\u8005\u304c\u7c21\u5358\u306b\u30a2\u30af\u30bb\u30b9\u3067\u304d\u3066\u3057\u307e\u3044\u307e\u3059\u3002\u305d\u306e\u7d50\u679c\u3001\u76d7\u8074\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3084\u6539\u3056\u3093\u3068\u3044\u3063\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ea\u30b9\u30af\u306b\u3055\u3089\u3055\u308c\u308b\u3053\u3068\u306b\u306a\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u3092\u6697\u53f7\u5316\u3059\u308c\u3070\u3001\u60aa\u610f\u306e\u3042\u308b\u7b2c\u4e09\u8005\u304b\u3089\u30a2\u30af\u30bb\u30b9\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002\u30e1\u30fc\u30eb\u3092\u5b89\u5168\u306b\u4f7f\u3044\u305f\u3044\u306e\u3067\u3042\u308c\u3070\u3001\u6697\u53f7\u5316\u306f\u5fc5\u9808\u306e\u7b2c\u4e00\u6761\u4ef6\u3068\u3044\u3063\u3066\u3082\u904e\u8a00\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u9867\u5ba2\u3084\u53d6\u5f15\u5148\u304b\u3089\u306e\u4fe1\u7528\u3092\u78ba\u4fdd\u3067\u304d\u308b<\/h3>\n\n\n\n<p>\u81ea\u793e\u3067\u3057\u3063\u304b\u308a\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u3057\u3066\u3044\u308c\u3070\u3001\u9867\u5ba2\u3084\u53d6\u5f15\u5148\u3082\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u5fc3\u914d\u3092\u3059\u308b\u3053\u3068\u306a\u304f\u5b89\u5fc3\u3057\u3066\u30e1\u30fc\u30eb\u306e\u9001\u53d7\u4fe1\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u306b\u306f\u500b\u4eba\u60c5\u5831\u306f\u3082\u3061\u308d\u3093\u306e\u3053\u3068\u3001\u793e\u5916\u79d8\u306e\u6a5f\u5bc6\u60c5\u5831\u304c\u542b\u307e\u308c\u308b\u3053\u3068\u3082\u5c11\u306a\u304f\u3042\u308a\u307e\u305b\u3093\u3002\u3053\u308c\u3089\u306e\u30c7\u30fc\u30bf\u304c\u6f0f\u3048\u3044\u3057\u305f\u308a\u6539\u3056\u3093\u3057\u305f\u308a\u3059\u308b\u306e\u3092\u9632\u3050\u306e\u306f\u3001\u4f01\u696d\u304c\u5f53\u7136\u306b\u5bfe\u7b56\u3059\u3079\u304d\u4e8b\u9805\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u4e8b\u6545\u304c\u767a\u751f\u3057\u3066\u3044\u306a\u304b\u3063\u305f\u3068\u3057\u3066\u3082\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306b\u3088\u308b\u5bfe\u7b56\u3092\u3057\u3066\u3044\u306a\u3051\u308c\u3070\u3001\u4f01\u696d\u306f\u300c\u30ea\u30b9\u30af\u3092\u653e\u7f6e\u3057\u3066\u3044\u308b\u300d\u3068\u307f\u306a\u3055\u308c\u308b\u306e\u3067\u3059\u3002\u30e1\u30fc\u30eb\u3092\u5b89\u5168\u306b\u4f7f\u3048\u308b\u3053\u3068\u3092\u30a2\u30d4\u30fc\u30eb\u3057\u3066\u9867\u5ba2\u3084\u53d6\u5f15\u5148\u304b\u3089\u306e\u4fe1\u7528\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3082\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u5fc5\u9808\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u4ed5\u7d44\u307f<\/h2>\n\n\n\n<p>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u304c\u5fc5\u8981\u3068\u3055\u308c\u308b\u7406\u7531\u3092\u307f\u3066\u304d\u307e\u3057\u305f\u3002\u305d\u308c\u3067\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3069\u306e\u3088\u3046\u306b\u5b9f\u73fe\u3055\u308c\u308b\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u3053\u3067\u306f\u3001\u4e00\u822c\u7684\u306b\u4f7f\u308f\u308c\u3066\u3044\u308b\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u65b9\u5f0f\u3068\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u308f\u3051\u3066\u89e3\u8aac\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3067\u4f7f\u308f\u308c\u308b2\u3064\u306e\u65b9\u5f0f<\/h3>\n\n\n\n<p>\u30e1\u30fc\u30eb\u306f\u4e00\u822c\u7684\u306b\u3001\u516c\u958b\u9375\u30fb\u79d8\u5bc6\u9375\u30fb\u5171\u901a\u9375\u306b\u3088\u3063\u3066\u6697\u53f7\u5316\u3055\u308c\u307e\u3059\u3002\u30c9\u30a2\u306b\u9375\u3092\u304b\u3051\u3066\u9375\u3092\u6301\u305f\u306a\u3044\u7b2c\u4e09\u8005\u304c\u5165\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3088\u3046\u306b\u3001\u30e1\u30fc\u30eb\u306b\u3082\u9375\u3092\u304b\u3051\u3066\u4e0d\u6b63\u306b\u30a2\u30af\u30bb\u30b9\u3055\u308c\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u4ee5\u4e0b\u3001\u516c\u958b\u9375\u30fb\u79d8\u5bc6\u9375\u30fb\u5171\u901a\u9375\u3092\u4f7f\u3044\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u5b9f\u73fe\u3059\u308b2\u3064\u306e\u65b9\u5f0f\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u5171\u901a\u9375\u6697\u53f7\u65b9\u5f0f | \u6697\u53f7\u5316\u30fb\u5fa9\u53f7\u5316\u306b\u540c\u3058\u9375\u3092\u4f7f\u3046\u6697\u53f7\u5316\u65b9\u5f0f<\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/commonkeycryptosystem.png\" alt=\"\u5171\u901a\u9375\u6697\u53f7\u65b9\u5f0f\u306e\u56f3\u89e3\" class=\"wp-image-13930\"\/><\/figure>\n\n\n\n<p>\u5171\u901a\u9375\u6697\u53f7\u65b9\u5f0f\u306f\u3001\u6697\u53f7\u5316\u30fb\u5fa9\u53f7\u5316\u306b\u5171\u901a\u9375\u3068\u547c\u3070\u308c\u308b\u540c\u3058\u9375\u3092\u4f7f\u3046\u306e\u304c\u7279\u5fb4\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u5171\u901a\u9375\u6697\u53f7\u65b9\u5f0f\u306f\u5f8c\u8ff0\u3059\u308b\u516c\u958b\u9375\u6697\u53f7\u5316\u65b9\u5f0f\u306b\u6bd4\u3079\u6697\u53f7\u5316\u3059\u308b\u5de5\u7a0b\u304c\u5c11\u306a\u304f\u3001\u30b3\u30b9\u30c8\u304c\u5b89\u304f\u3059\u3080\u3068\u3044\u3046\u30e1\u30ea\u30c3\u30c8\u304c\u3042\u308a\u307e\u3059\u3002\u4e00\u65b9\u3067\u5171\u901a\u9375\u304c\u6d41\u51fa\u3059\u308b\u3068\u3001\u305d\u308c\u3092\u4f7f\u3044\u7b2c\u4e09\u8005\u306b\u5fa9\u53f7\u5316\u3055\u308c\u3066\u3057\u307e\u3046\u306e\u3067\u6ce8\u610f\u304c\u5fc5\u8981\u3067\u3059\u3002\u307e\u305f\u9001\u4fe1\u5148\u3054\u3068\u306b\u5225\u3005\u306e\u5171\u901a\u9375\u3092\u7528\u610f\u3057\u306a\u304f\u3066\u306f\u306a\u3089\u305a\u7ba1\u7406\u3059\u308b\u9375\u306e\u91cf\u304c\u81a8\u5927\u306b\u306a\u308b\u70b9\u3082\u30c7\u30e1\u30ea\u30c3\u30c8\u3068\u3057\u3066\u3042\u3052\u3089\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f | \u6697\u53f7\u5316\u30fb\u5fa9\u53f7\u5316\u306b\u7570\u306a\u308b\u9375\u3092\u4f7f\u3046\u6697\u53f7\u5316\u65b9\u5f0f<\/h4>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" width=\"1000\" height=\"525\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/publickeycryptography.png\" alt=\"\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f\u306e\u56f3\u89e3\" class=\"wp-image-13270\" srcset=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/publickeycryptography.png 1000w, https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/publickeycryptography-300x158.png 300w\" sizes=\"(max-width: 1000px) 100vw, 1000px\" \/><\/figure>\n\n\n\n<p>\u516c\u958b\u9375\u6697\u53f7\u65b9\u5f0f\u306f\u3001\u516c\u958b\u9375\u30fb\u79d8\u5bc6\u9375\u3092\u7d44\u307f\u5408\u308f\u305b\u3066\u4f7f\u3046\u6697\u53f7\u5316\u306e\u65b9\u5f0f\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u53d7\u4fe1\u8005\u304c\u516c\u958b\u9375\u3092\u9001\u308a\u3001\u9001\u4fe1\u8005\u306f\u305d\u306e\u516c\u958b\u9375\u3067\u6697\u53f7\u5316\u3092\u3057\u307e\u3059\u3002<br>\u4e00\u65b9\u3067\u516c\u958b\u9375\u306b\u3088\u308a\u6697\u53f7\u5316\u3055\u308c\u305f\u30e1\u30fc\u30eb\u3092\u5fa9\u53f7\u5316\u3067\u304d\u308b\u306e\u306f\u3001\u53d7\u4fe1\u8005\u304c\u3082\u3064\u79d8\u5bc6\u9375\u3060\u3051\u3067\u3059\u3002\u53d7\u4fe1\u8005\u306f\u30e1\u30fc\u30eb\u3092\u53d7\u3051\u53d6\u3063\u305f\u3089\u3001\u79d8\u5bc6\u9375\u306b\u3088\u3063\u3066\u5fa9\u53f7\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u516c\u958b\u6697\u53f7\u65b9\u5f0f\u3067\u306f\u4eee\u306b\u516c\u958b\u9375\u304c\u6f0f\u3048\u3044\u3057\u3066\u3082\u3001\u53d7\u4fe1\u8005\u306e\u79d8\u5bc6\u9375\u3067\u3057\u304b\u30e1\u30fc\u30eb\u3092\u5fa9\u53f7\u5316\u3067\u304d\u306a\u3044\u306e\u3067\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u78ba\u4fdd\u3057\u3084\u3059\u3044\u70b9\u304c\u30e1\u30ea\u30c3\u30c8\u3067\u3059\u3002\u305d\u306e\u53cd\u9762\u3001\u6697\u53f7\u5316\u306e\u5de5\u7a0b\u304c\u5171\u901a\u9375\u6697\u53f7\u65b9\u5f0f\u3088\u308a\u591a\u304f\u3001\u30b3\u30b9\u30c8\u304c\u304b\u304b\u308b\u70b9\u304c\u30c7\u30e1\u30ea\u30c3\u30c8\u3068\u3044\u3048\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3067\u4f7f\u308f\u308c\u308b2\u7a2e\u985e\u306e\u30d7\u30ed\u30c8\u30b3\u30eb<\/h3>\n\n\n\n<p>\u3053\u3053\u3067\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3067\u4f7f\u308f\u308c\u308b\u3001SSL\/TLS\u3068S\/MIME\u3068\u3044\u30462\u3064\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306b\u3064\u3044\u3066\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u304a\u3053\u306a\u3046\u305f\u3081\u306b\u306f\u3001\u3053\u308c\u3089\u30d7\u30ed\u30c8\u30b3\u30eb\u306e\u6982\u8981\u3068\u9055\u3044\u3092\u628a\u63e1\u3057\u3066\u304a\u304f\u3053\u3068\u304c\u5fc5\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<h4 class=\"wp-block-heading\">SSL\/TLS | \u30e1\u30fc\u30eb\u9001\u53d7\u4fe1\u306e\u7d4c\u8def\u3092\u6697\u53f7\u5316\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb<\/h4>\n\n\n\n<p>SSL\/TLS<span class=\"kh-marker-red\">\u203b<\/span>\u306f\u3001Web\u30da\u30fc\u30b8\u3092\u53c2\u7167\u3059\u308b\u969b\u306e\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3057\u3066\u3082\u3088\u304f\u4f7f\u308f\u308c\u307e\u3059\u304c\u3001\u30e1\u30fc\u30eb\u9001\u53d7\u4fe1\u306e\u7d4c\u8def\u3092\u6697\u53f7\u5316\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3057\u3066\u3082\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u300chttps\uff1a\/\/\uff5e\u300d\u304b\u3089\u306f\u3058\u307e\u308bWeb\u30da\u30fc\u30b8\u3078\u30a2\u30af\u30bb\u30b9\u3059\u308b\u969b\u306f\u3001SSL\/TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u304c\u884c\u308f\u308c\u3066\u3044\u308b\u3053\u3068\u3092\u77e5\u3063\u3066\u3044\u308b\u65b9\u306f\u591a\u3044\u3067\u3057\u3087\u3046\u3002\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316\u3067\u3082\u3001SSL\/TLS\u304c\u4f7f\u308f\u308c\u3066\u3044\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>SSL\/TLS\u3067\u306f\u3001\u5171\u901a\u9375\u6697\u53f7\u5316\u65b9\u5f0f\u3068\u516c\u958b\u9375\u6697\u53f7\u5316\u65b9\u5f0f\u306e\u4e21\u65b9\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002SSL\/TLS\u304c\u4f7f\u308f\u308c\u308b\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u7a2e\u985e\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<div class=\"kh-box is-style-bg-sky-blue\"><div class=\"kh-box__content\">\n<ul class=\"wp-block-list\">\n<li>https\u306b\u3088\u308bWeb\u6697\u53f7\u5316\uff08Web\u30e1\u30fc\u30eb\u306e\u901a\u4fe1\u6697\u53f7\u5316\uff09<\/li>\n\n\n\n<li>POP over SSL\uff08POP\u306b\u3066\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30e1\u30fc\u30eb\u53d7\u4fe1\u3092\u3059\u308b\u969b\u306eSSL\u6697\u53f7\u5316\uff09<\/li>\n\n\n\n<li>SMTP over SSL\uff08\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3066\u30e1\u30fc\u30eb\u9001\u4fe1\u3092\u3059\u308b\u969b\u306eSSL\u6697\u53f7\u5316\uff09<\/li>\n\n\n\n<li>IMAP over SSL\uff08IMAP\u306b\u3066\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30e1\u30fc\u30eb\u53d7\u4fe1\u3092\u3059\u308b\u969b\u306eSSL\u6697\u53f7\u5316\uff09<\/li>\n<\/ul>\n<\/div><\/div>\n\n\n\n<p class=\"has-red-color has-text-color has-link-color has-small-font-size wp-elements-396a8b1b76c6b47c085b9e36f899843d\">\u203bSSL\/TLS\u3067\u6697\u53f7\u5316\u3059\u308b\u306e\u306f\u3001\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u3068\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u901a\u4fe1\u306e\u307f\u3067\u3059\u3002\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u901a\u4fe1\u3092\u6697\u53f7\u5316\u3059\u308b\u969b\u306f\u3001\u5f8c\u8ff0\u3059\u308bSTARTTLS\u3068\u3044\u3046\u6280\u8853\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<p>SSL\/TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u3067\u306f\u3001\u5171\u901a\u9375\u6697\u53f7\u5316\u65b9\u5f0f\u30fb\u516c\u958b\u9375\u6697\u53f7\u5316\u65b9\u5f0f\u306e\u4e21\u65b9\u304c\u4f7f\u308f\u308c\u307e\u3059\u3002\u4e00\u4f8b\u3068\u3057\u3066\u3001https\u3067\u6697\u53f7\u5316\u3059\u308b\u969b\u306e\u6d41\u308c\u306f\u304a\u304a\u3088\u305d\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u30d6\u30e9\u30a6\u30b6\u304b\u3089Web\u30b5\u30fc\u30d0\u30fc\u306b\u5bfe\u3057\u3001SSL\/TLS\u306b\u3088\u308b\u901a\u4fe1\u3092\u30ea\u30af\u30a8\u30b9\u30c8\u3059\u308b<\/li>\n\n\n\n<li>Web\u30b5\u30fc\u30d0\u30fc\u304b\u3089\u30d6\u30e9\u30a6\u30b6\u306b\u5bfe\u3057\u3001\u30b5\u30fc\u30d0\u30fc\u8a3c\u660e\u66f8\u3068\u516c\u958b\u9375\u3092\u9001\u4fe1\u3059\u308b<\/li>\n\n\n\n<li>\u30d6\u30e9\u30a6\u30b6\u306f\u53d7\u3051\u53d6\u3063\u305fSSL\u30b5\u30fc\u30d0\u30fc\u8a3c\u660e\u66f8\u3068\u516c\u958b\u9375\u3067\u3001\u5171\u901a\u9375\u3092\u6697\u53f7\u5316\u3057\u30b5\u30fc\u30d0\u30fc\u3078\u9001\u4fe1\u3059\u308b<\/li>\n\n\n\n<li>Web\u30b5\u30fc\u30d0\u30fc\u306f\u53d7\u3051\u53d6\u3063\u305f\u5171\u901a\u9375\u3092\u3001\u79d8\u5bc6\u9375\u306b\u3088\u3063\u3066\u5fa9\u53f7\u5316\u3059\u308b<\/li>\n\n\n\n<li>Web\u30d6\u30e9\u30a6\u30b6\u30fbWeb\u30b5\u30fc\u30d0\u30fc\u9593\u3067\u3001\u5171\u901a\u9375\u3092\u4f7f\u3063\u305f\u6697\u53f7\u5316\u901a\u4fe1\u304c\u958b\u59cb\u3055\u308c\u308b<\/li>\n<\/ol>\n\n\n\n<div class=\"kh-box has-label\"><div class=\"kh-box__label\">SSL\/TLS\u306b\u3064\u3044\u3066<\/div><div class=\"kh-box__content\">\n<p>\u300cSSL\/TLS\u300d\u306f\u3001\u6b63\u78ba\u306b\u306f\u300cTLS\u300d\u3068\u547c\u3070\u308c\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002SSL\u306f\u91cd\u5927\u306a\u8106\u5f31\u6027\u304c\u898b\u3064\u304b\u308aSSL3.0\u3092\u6700\u5f8c\u306b\u66f4\u65b0\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306bSSL\u306b\u4ee3\u308f\u308b\u65b0\u3057\u3044\u30d7\u30ed\u30c8\u30b3\u30eb\u300cTLS\u300d\u304c\u767b\u5834\u3057\u305f\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>SSL\u3068\u8a00\u3063\u305f\u308aSSL\/TLS\u3068\u8a00\u3063\u305f\u308a\u3059\u308b\u5834\u5408\u3001\u5b9f\u969b\u306b\u306f\u307b\u3068\u3093\u3069\u306e\u5834\u5408\u3067TLS\u304c\u4f7f\u308f\u308c\u3066\u3044\u307e\u3059\u3002\u3057\u304b\u3057SSL\u3068\u3044\u3046\u7528\u8a9e\u304c\u666e\u53ca\u3057\u3066\u3044\u305f\u3053\u3068\u304b\u3089\u3001\u5206\u304b\u308a\u3084\u3059\u3044\u3088\u3046\u306b\u300cSSL\/TLS\u300d\u3068\u3044\u3046\u7528\u8a9e\u304c\u65b0\u305f\u306b\u5b9a\u7740\u3057\u305f\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305f\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u306e\u5bfe\u5fdc\u8868\u306a\u3069\u3067\u8868\u8a18\u3055\u308c\u308b\u300cTLS\u300d\u3068\u306f\u3001\u672c\u8a18\u4e8b\u3067\u3044\u3046\u300cSSL\/TLS\u300d\u3068\u540c\u3058\u3082\u306e\u3068\u8003\u3048\u3066\u9593\u9055\u3044\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n<\/div><\/div>\n\n\n\n<h4 class=\"wp-block-heading\">PGP\u30fbS\/MIME\u3000| \u30e1\u30fc\u30eb\u305d\u306e\u3082\u306e\u3092\u6697\u53f7\u5316\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb<\/h4>\n\n\n\n<p>PGP\u30fbS\/MIME\u306f\u3001\u30e1\u30fc\u30eb\u305d\u306e\u3082\u306e\uff08\u672c\u6587\u30fb\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\uff09\u3092\u6697\u53f7\u5316\u3059\u308b\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3059\u3002<\/p>\n\n\n\n<p>PGP\u3068S\/MIME\u306e\u9055\u3044\u306f\u3001\u516c\u958b\u9375\u306e\u6b63\u5f53\u6027\u3092\u3069\u306e\u3088\u3046\u306b\u8a3c\u660e\u3059\u308b\u304b\u306b\u3042\u308a\u307e\u3059\u3002PGP\u3067\u306f\u3001\u516c\u958b\u9375\u306e\u6b63\u5f53\u6027\u3092\u8a3c\u660e\u3059\u308b\u306e\u306f\u81ea\u5206\u81ea\u8eab\u3067\u3059\u3002\u4e00\u65b9\u3067S\/MIME\u3067\u306f\u3001\u8a8d\u8a3c\u5c40\u304c\u516c\u958b\u9375\u306e\u6b63\u5f53\u6027\u3092\u8a3c\u660e\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u305d\u306e\u305f\u3081S\/MIME\u306e\u65b9\u304c\u3001PGP\u3088\u308a\u4fe1\u983c\u6027\u306f\u9ad8\u3044\u3067\u3059\u3002\u305d\u306e\u4ee3\u308f\u308a\u3001S\/MIME\u306e\u65b9\u304c\u30b3\u30b9\u30c8\u306f\u304b\u304b\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u5171\u901a\u9375\u6697\u53f7\u5316\u65b9\u5f0f\u30fb\u516c\u958b\u9375\u6697\u53f7\u5316\u65b9\u5f0f\u306e\u4e21\u65b9\u3092\u4f7f\u3046\u70b9\u306f\u3001SSL\/TLS\u3068PGP\u30fbS\/MIME\u306f\u304b\u308f\u308a\u307e\u305b\u3093\u3002PGP\u30fbS\/MIME\u3067\u306f\u3001\u4ee5\u4e0b\u306e\u3088\u3046\u306a\u6d41\u308c\u3067\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u304c\u5b9f\u73fe\u3055\u308c\u307e\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u9001\u4fe1\u8005\u306f\u5171\u901a\u9375\u3092\u751f\u6210\u3057\u3001\u30e1\u30fc\u30eb\u3092\u6697\u53f7\u5316\u3059\u308b<\/li>\n\n\n\n<li>\u9001\u4fe1\u8005\u306f\u53d7\u4fe1\u8005\u304b\u3089\u516c\u958b\u9375\u3092\u5165\u624b\u3057\u3001\u5171\u901a\u9375\u3092\u6697\u53f7\u5316\u3059\u308b<\/li>\n\n\n\n<li>\u9001\u4fe1\u8005\u306f\u53d7\u4fe1\u8005\u306b\u5bfe\u3057\u3001\u6697\u53f7\u5316\u3057\u305f\u30e1\u30fc\u30eb\u3068\u4e0a\u8a18\u3067\u6697\u53f7\u5316\u3057\u305f\u5171\u901a\u9375\u3092\u3042\u308f\u305b\u3066\u9001\u4fe1\u3059\u308b<\/li>\n\n\n\n<li>\u53d7\u4fe1\u8005\u306f\u6697\u53f7\u5316\u3055\u308c\u305f\u30e1\u30fc\u30eb\u3068\u5171\u901a\u9375\u3092\u53d7\u4fe1\u3059\u308b<\/li>\n\n\n\n<li>\u53d7\u4fe1\u8005\u306f\u81ea\u5206\u306e\u516c\u958b\u9375\u3067\u6697\u53f7\u5316\u3055\u308c\u305f\u5171\u901a\u9375\u3092\u3001\u81ea\u5206\u306e\u79d8\u5bc6\u9375\u306b\u3066\u5fa9\u53f7\u5316\u3059\u308b<\/li>\n\n\n\n<li>\u5fa9\u53f7\u5316\u3055\u308c\u305f\u5171\u901a\u9375\u306b\u3066\u3001\u30e1\u30fc\u30eb\u3092\u5fa9\u53f7\u5316\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<p>\u307e\u305f\u3001PGP\u30fbS\/MIME\u3067\u306f\u3001\u96fb\u5b50\u7f72\u540d\u306b\u3088\u3063\u3066\u30e1\u30fc\u30eb\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u304b\u78ba\u8a8d\u3059\u308b\u6a5f\u80fd\u3082\u3042\u308a\u307e\u3059\u3002PGP\u30fbS\/MIME\u306b\u3066\u3001\u96fb\u5b50\u7f72\u540d\u306b\u3088\u308a\u30e1\u30fc\u30eb\u6539\u3056\u3093\u3092\u9632\u3050\u6d41\u308c\u306f\u4ee5\u4e0b\u306e\u901a\u308a\u3067\u3059\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u9001\u4fe1\u8005\u306f\u9001\u4fe1\u30e1\u30fc\u30eb\u306b\u5bfe\u3057\u3001\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3092\u4f7f\u3044\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u8a08\u7b97\u3059\u308b<\/li>\n\n\n\n<li>\u9001\u4fe1\u8005\u306f\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u81ea\u5206\u306e\u79d8\u5bc6\u9375\u3067\u6697\u53f7\u5316\u3057\u3001\u96fb\u5b50\u7f72\u540d\u3068\u3059\u308b<\/li>\n\n\n\n<li>\u9001\u4fe1\u8005\u306f\u96fb\u5b50\u7f72\u540d\u3092\u4ed8\u4e0e\u3057\u305f\u30e1\u30fc\u30eb\u3092\u53d7\u4fe1\u8005\u3078\u9001\u4fe1\u3059\u308b<\/li>\n\n\n\n<li>\u53d7\u4fe1\u8005\u306f\u6697\u53f7\u5316\u3055\u308c\u305f\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u3001\u9001\u4fe1\u8005\u306e\u516c\u958b\u9375\u306b\u3066\u5fa9\u53f7\u5316\u3059\u308b<\/li>\n\n\n\n<li>\u5fa9\u53f7\u5316\u304c\u6210\u529f\u3059\u308c\u3070\u3001\u516c\u958b\u9375\u3068\u5bfe\u306b\u306a\u308b\u79d8\u5bc6\u9375\u3092\u6301\u3064\u9001\u4fe1\u8005\u306b\u3088\u308a\u9001\u3089\u308c\u305f\u3082\u306e\u3068\u78ba\u8a8d\u3067\u304d\u308b<\/li>\n\n\n\n<li>\u5143\u306e\u30e1\u30fc\u30eb\u306e\u30cf\u30c3\u30b7\u30e5\u5024\u3068\u3001\u5fa9\u53f7\u5316\u3055\u308c\u305f\u30cf\u30c3\u30b7\u30e5\u5024\u3092\u6bd4\u3079\u3066\u540c\u3058\u5024\u3067\u3042\u308c\u3070\u3001\u30e1\u30fc\u30eb\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3082\u8a3c\u660e\u3067\u304d\u308b<\/li>\n<\/ol>\n\n\n\n<h4 class=\"wp-block-heading\">SSL\/TLS\u3068PGP\u30fbS\/MIME\u306e\u4e3b\u306a\u9055\u3044 | \u6697\u53f7\u5316\u3059\u308b\u5bfe\u8c61<\/h4>\n\n\n\n<p>SSL\/TLS\u3068PGP\u30fbS\/MIME\u306f\u3001\u300c\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u304a\u3053\u306a\u3046\u30d7\u30ed\u30c8\u30b3\u30eb\u3067\u3042\u308b\u300d\u3068\u3044\u3046\u70b9\u306f\u304b\u308f\u308a\u307e\u305b\u3093\u3002\u4e21\u8005\u306e\u9055\u3044\u306f\u3001\u6697\u53f7\u5316\u3059\u308b\u5bfe\u8c61\u3067\u3059\u3002<\/p>\n\n\n\n<p>SSL\/TLS\u3067\u306f\u30e1\u30fc\u30eb\u304c\u9001\u53d7\u4fe1\u3055\u308c\u308b\u7d4c\u8def\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002\u4e00\u65b9\u3067PGP\u30fbS\/MIME\u304c\u6697\u53f7\u5316\u3059\u308b\u306e\u306f\u3001\u30e1\u30fc\u30eb\u672c\u6587\u3084\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3068\u3044\u3063\u305f\u30e1\u30fc\u30eb\u305d\u306e\u3082\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>SSL\/TLS\u3068PGP\u30fbS\/MIME\u306f\u3001\u3069\u3061\u3089\u304b\u4e00\u65b9\u3092\u4f7f\u3048\u3070\u3088\u3044\u3068\u3044\u3046\u3082\u306e\u3067\u306f\u3042\u308a\u307e\u305b\u3093\u3002\u4e21\u8005\u3092\u4f75\u7528\u3059\u308b\u3053\u3068\u306b\u3088\u3063\u3066\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u5f37\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">\u975e\u6697\u53f7\u5316\u901a\u4fe1\u3092\u6697\u53f7\u5316\u901a\u4fe1\u306b\u5207\u308a\u66ff\u3048\u308bSTARTTLS\u304c\u666e\u53ca\u3057\u3066\u3044\u308b<\/h3>\n\n\n\n<p>STARTTLS (\u30b9\u30bf\u30fc\u30c8\u30fb\u30c6\u30a3\u30fc\u30a8\u30eb\u30a8\u30b9) \u306f\u3001\u6697\u53f7\u5316\u3055\u308c\u3066\u3044\u306a\u3044\u901a\u4fe1\u3092SSL\/TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u901a\u4fe1\u306b\u5207\u308a\u66ff\u3048\u308b\u6280\u8853\u3067\u3059\u3002<\/p>\n\n\n\n<p>SSL\/TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u901a\u4fe1\u3092\u304a\u3053\u306a\u3046\u5834\u5408\u3001\u672c\u6765\u306f\u5c02\u7528\u306e\u30dd\u30fc\u30c8\u756a\u53f7\u3092\u5272\u308a\u5f53\u3066\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u305f\u3068\u3048\u3070\u30e1\u30fc\u30eb\u9001\u4fe1\u3067\u3042\u308c\u3070\u3001SSL\/TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u3092\u304a\u3053\u306a\u3046\u305f\u3081\u306b\u306f\u3001\u5c02\u7528\u306e465\u756a\u30dd\u30fc\u30c8\u304c\u5272\u308a\u5f53\u3066\u3089\u308c\u307e\u3059\u3002\u3057\u304b\u3057STARTTLS\u306a\u3089\u3001\u5f93\u6765\u304b\u3089SMTP\u901a\u4fe1\u3067\u4f7f\u308f\u308c\u3066\u3044\u305f25\u756a\u30dd\u30fc\u30c8\u3084587\u756a\u30dd\u30fc\u30c8\u3067\u3082\u6697\u53f7\u5316\u901a\u4fe1\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u307e\u305fSTARTTLS\u306f\u3001\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u3068\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u9593\u3060\u3051\u3067\u306a\u304f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u540c\u58eb\u306e\u901a\u4fe1\u3067\u3082SSL\/TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u901a\u4fe1\u3092\u5b9f\u73fe\u3057\u307e\u3059\u3002\u6628\u4eca\u3067\u306fSTARTTLS\u306b\u5bfe\u5fdc\u3057\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u9593\u306e\u901a\u4fe1\u3082SSL\/TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u3092\u5b9f\u73fe\u3059\u308b\u4f01\u696d\u3084\u30b5\u30fc\u30d3\u30b9\u304c\u5897\u3048\u3066\u3044\u308b\u72b6\u6cc1\u3067\u3059\u3002<\/p>\n\n\n\n<p>STARTTLS\u306e\u8a73\u7d30\u306b\u3064\u3044\u3066\u306f\u3001\u4ee5\u4e0b\u8a18\u4e8b\u3082\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\t\t<div class=\"kh-blog-card\">\n\t\t\t\t\t\t\t<figure class=\"kh-blog-card__thumbnail\">\n\t\t\t\t\t<img decoding=\"async\" width=\"1200\" height=\"630\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/202104a_catch-2.jpg\" class=\"kh-blog-card__image wp-post-image\" alt=\"\u3010\u56f3\u89e3\u3011\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316\u3067\u4f7f\u308f\u308c\u308bSTARTTLS\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u3068\u5229\u7528\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059\" \/>\t\t\t\t<\/figure>\n\t\t\t\t\t\t<div class=\"kh-blog-card__text\">\n\t\t\t\t<p class=\"kh-blog-card__title\"><a href=\"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/starttls\/\">\u3010\u56f3\u89e3\u3011\u30e1\u30fc\u30eb\u306e\u6697\u53f7\u5316\u3067\u4f7f\u308f\u308c\u308bSTARTTLS\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u3068\u5229\u7528\u65b9\u6cd5\u3092\u89e3\u8aac\u3057\u307e\u3059<\/a><\/p>\n\t\t\t\t<p class=\"kh-blog-card__description\">Gmail\u3067\u53d7\u4fe1\u3057\u305f\u30e1\u30fc\u30eb\u306b\u3001\u3082\u3057\u8d64\u3044\u9375\u306e\u30a2\u30a4\u30b3\u30f3\u304c\u4ed8\u3044\u3066\u3044\u305f\u3089\u3069\u3046\u3057\u307e\u3059\u304b\u3002\u3053\u308c\u306f\u30e1\u30fc\u30eb\u304c\u300c\u6697\u53f7\u5316\u300d\u3055\u308c\u3066\u3044\u306a\u3044\u3068\u304d\u306e\u8868\u793a\u3067\u3059\u304c\u3001\u4f55\u306b\u6c17\u3092\u3064\u3051\u305f\u3089\u3044\u3044\u306e\u3067\u3057\u3087\u3046\u304b\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u30e1\u30fc\u30eb\u306e\u300c\u6697\u53f7\u5316\u300d\u3067\u4f7f\u308f\u308c\u308b\u6280\u8853\u306e\u3046\u3061\u3001\u300cSTARTTLS\u300d\u306e\u5927\u5207\u306a\u7406\u7531\u3084\u4ed5\u7d44\u307f\u3001\u6ce8\u610f\u70b9\u3092\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u3053\u308c\u3067\u5b89\u5fc3\u3057\u3066\u30e1\u30fc\u30eb\u304c\u5229\u7528\u3067\u304d\u3001\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u304c\u5411\u4e0a\u3057\u3066\u304a\u5ba2\u69d8\u304b\u3089\u306e\u4fe1\u983c\u306b\u3082\u3064\u306a\u304c\u308a\u307e\u3059\u3002 Pick &hellip;<\/p>\n\t\t\t<\/div>\n\t\t<\/div>\n\t\t\n\n\n<h2 class=\"wp-block-heading\">\u5bfe\u5fdc\u3059\u308b\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u3092\u4f7f\u3048\u3070S\/MIME\u3067\u306e\u6697\u53f7\u5316\u304c\u53ef\u80fd<\/h2>\n\n\n\n<figure class=\"wp-block-image size-full\"><img decoding=\"async\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/recievemail.jpeg\" alt=\"\" class=\"wp-image-11978\"\/><\/figure>\n\n\n\n<p>\u5bfe\u5fdc\u3059\u308b\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\u3092\u4f7f\u3046\u3053\u3068\u306b\u3088\u3063\u3066\u3001PGP\u3084S\/MIME\u3067\u306e\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u5b9f\u73fe\u3067\u304d\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u4e00\u4f8b\u3068\u3057\u3066\u3001\u4e3b\u8981\u306a\u30e1\u30fc\u30eb\u30bd\u30d5\u30c8\uff08Outlook\u30fbGmail\uff09\u3067S\/MIME\u3092\u4f7f\u3044\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u5b9f\u73fe\u3059\u308b\u65b9\u6cd5\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Outlook\u3067S\/MIME\u306b\u3088\u308a\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>Outlook\u306fS\/MIME\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u304c\u3001\u30d0\u30fc\u30b8\u30e7\u30f3\u306b\u3088\u308a\u8a2d\u5b9a\u65b9\u6cd5\u304c\u7570\u306a\u308a\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u53c2\u8003\u307e\u3067\u306b\u3001Outlook on the web\u3067S\/MIME\u3092\u4f7f\u3046\u65b9\u6cd5\u3092\u307f\u3066\u3044\u304d\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p><strong>\u2460S\/MIME\u8a3c\u660e\u66f8\u306e\u53d6\u5f97<\/strong><br>\u3042\u3089\u304b\u3058\u3081\u7ba1\u7406\u8005\u304b\u3089S\/MIME\u8a3c\u660e\u66f8\u3092\u53d6\u5f97\u3057\u3001\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3057\u3066\u304a\u304f<\/p>\n\n\n\n<p><strong>\u2461S\/MIME \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u300c\u8a2d\u5b9a\uff08\u6b6f\u8eca\u30de\u30fc\u30af\uff09\u300d\u2192\u300c\u30e1\u30fc\u30eb\u300d\u2192\u300cS\/MIME\u300d\u3078\u79fb\u52d5\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u300cS\/MIME \u3092\u4f7f\u7528\u3059\u308b\u306b\u306f S\/MIME \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3092\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u30fb\u30fb\u30fb\u30fb\u300d\u3068\u3044\u3046\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u3002\u6307\u793a\u306b\u5f93\u3044\u300c\u3053\u3053\u3092\u30af\u30ea\u30c3\u30af\u300d\u3092\u9078\u629e\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u30d5\u30a1\u30a4\u30eb\u306e\u300c\u5b9f\u884c\u300d\u3001\u3082\u3057\u304f\u306f\u300c\u958b\u304f\u300d\u3092\u9078\u629e\u3057\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u3092\u5b9f\u884c\u3059\u308b<\/li>\n<\/ol>\n\n\n\n<p><strong>\u2462S\/MIME \u30b3\u30f3\u30c8\u30ed\u30fc\u30eb\u3092\u4f7f\u7528\u3059\u308b Outlook on the web \u30c9\u30e1\u30a4\u30f3\u306e\u8a31\u53ef<\/strong><br>Edge\u3084Chrome\u306a\u3069\u3067Outlook on the web\u3078\u79fb\u52d5\u3059\u308b\u3068\u3001\u4ee5\u4e0b\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u8868\u793a\u3055\u308c\u308b\u3002<\/p>\n\n\n\n<p>\u300cS\/MIME \u306f\u73fe\u5728\u306e\u30c9\u30e1\u30a4\u30f3\u3067\u6a5f\u80fd\u3059\u308b\u3088\u3046\u306b\u69cb\u6210\u3055\u308c\u3066\u3044\u307e\u305b\u3093\u3002 \u30d6\u30e9\u30a6\u30b6\u306e\u8a2d\u5b9a\u306e S\/MIME \u62e1\u5f35\u30aa\u30d7\u30b7\u30e7\u30f3 \u30da\u30fc\u30b8\u3067\u30c9\u30e1\u30a4\u30f3\u3092\u8ffd\u52a0\u3067\u304d\u307e\u3059\u3002\u300d<\/p>\n\n\n\n<p>\u753b\u9762\u306e\u6307\u793a\u306b\u5f93\u3044\u64cd\u4f5c\u3092\u3059\u3059\u3081\u3001\u8077\u5834\u3084\u5b66\u6821\u306e\u30c9\u30e1\u30a4\u30f3\u3067S\/MIME\u3092\u4f7f\u7528\u3067\u304d\u308b\u3088\u3046\u8a31\u53ef\u3059\u308b\u3002<\/p>\n\n\n\n<p><strong>\u2463\u9001\u4fe1\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6697\u53f7\u5316\u30fb\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u3059\u308b<\/strong><\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u300c\u8a2d\u5b9a\uff08\u6b6f\u8eca\u30de\u30fc\u30af\uff09\u300d\u2192\u300c\u30e1\u30fc\u30eb\u300d\u2192\u300cS\/MIME\u300d\u3078\u79fb\u52d5\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u300c\u3059\u3079\u3066\u306e\u9001\u4fe1\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u5185\u5bb9\u3068\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u6697\u53f7\u5316\u3059\u308b\u300d \u300c\u3059\u3079\u3066\u306e\u9001\u4fe1\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u3092\u8ffd\u52a0\u3059\u308b\u300d \u300c\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306b\u6700\u9069\u306a\u8a3c\u660e\u66f8\u3092\u81ea\u52d5\u7684\u306b\u9078\u3076\u300d\u306b\u30c1\u30a7\u30c3\u30af\u3092\u5165\u308c\u308b<\/li>\n<\/ol>\n\n\n\n<h3 class=\"wp-block-heading\">Gmail\u3067S\/MIME\u306b\u3088\u308a\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u3059\u308b\u65b9\u6cd5<\/h3>\n\n\n\n<p>Gmail\u3067\u306f\u3001\u6a19\u6e96\u3067S\/MIME\u306e\u6a5f\u80fd\u304c\u7d44\u307f\u8fbc\u307e\u308c\u3066\u3044\u307e\u3059\u3002\u305d\u306e\u305f\u3081\u7ba1\u7406\u8005\u304cS\/MIME\u8a3c\u660e\u66f8\u3092\u4f7f\u3048\u308b\u72b6\u614b\u306b\u3057\u3066\u3044\u308c\u3070\u3001S\/MIME\u306b\u3088\u308b\u6697\u53f7\u5316\u304c\u5229\u7528\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u9001\u4fe1\u30e1\u30fc\u30eb\u306b\u3066S\/MIME\u306b\u3088\u308b\u6697\u53f7\u5316\u3092\u5229\u7528\u3059\u308b\u969b\u306f\u3001\u4ee5\u4e0b\u306e\u624b\u9806\u3092\u53c2\u7167\u304f\u3060\u3055\u3044\u3002<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>\u300c\u4f5c\u6210\u300d\u30dc\u30bf\u30f3\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b<\/li>\n\n\n\n<li>\u30e1\u30fc\u30eb\u4f5c\u6210\u753b\u9762\u306b\u3066\u3001\u53d7\u4fe1\u8005\u306e\u53f3\u5074\u306b\u8868\u793a\u3055\u308c\u305f\u9320\u524d\u30de\u30fc\u30af\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3002<\/li>\n\n\n\n<li>\u300c\u8a73\u7d30\u3092\u8868\u793a\u300d\u3092\u30af\u30ea\u30c3\u30af\u3059\u308b\u3068\u4ee5\u4e0b\u3044\u305a\u308c\u304b\u306e\u30ab\u30e9\u30fc\u30b3\u30fc\u30c9\u3088\u308a\u3001S\/MINE\u306e\u8a2d\u5b9a\u3092\u5909\u66f4\u3067\u304d\u308b<br>\u203b\u7dd1\u306e\u30ab\u30e9\u30fc\u30b3\u30fc\u30c9\u3092\u9078\u629e\u3057\u305f\u307e\u307e\u306b\u3059\u308c\u3070\u3001S\/MINE\u306b\u3088\u308b\u6697\u53f7\u5316\u304c\u304a\u3053\u306a\u308f\u308c\u308b\u3002<\/li>\n<\/ol>\n\n\n\n<figure class=\"wp-block-table is-style-regular\"><table><thead><tr><th>\u30ab\u30e9\u30fc\u30b3\u30fc\u30c9\u306e\u7a2e\u985e<\/th><th>\u6982\u8981<\/th><\/tr><\/thead><tbody><tr><td>\u7dd1<\/td><td>S\/MINE\u306b\u3088\u308a\u6697\u53f7\u5316\u3055\u308c\u3001\u79d8\u5bc6\u9375\u304c\u306a\u3044\u3068\u8907\u5408\u5316\u3055\u308c\u306a\u3044<\/td><\/tr><tr><td>\u30b0\u30ec\u30fc<\/td><td>\u9001\u4fe1\u5074\u30fb\u53d7\u4fe1\u5074\u3068\u3082\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u5834\u5408\u306e\u307f\u3001TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u3092\u304a\u3053\u306a\u3046<\/td><\/tr><tr><td>\u8d64<\/td><td>\u6697\u53f7\u5316\u304c\u304a\u3053\u306a\u308f\u308c\u306a\u3044<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">\u5bfe\u5fdc\u3059\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308c\u3070SSL\u3067\u306e\u6697\u53f7\u5316\u304c\u53ef\u80fd<\/h2>\n\n\n\n<p>SSL\/TLS\u3067\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u304a\u3053\u306a\u3046\u305f\u3081\u306b\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u304cSSL\/TLS\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u81ea\u793e\u30b5\u30fc\u30d0\u30fc\u304cSSL\/TLS\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u5206\u304b\u3089\u306a\u3044\u5834\u5408\u306f\u3001\u7ba1\u7406\u8005\u306b\u554f\u3044\u5408\u308f\u305b\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<p>\u3082\u3057\u3001\u81ea\u793e\u3067SSL\/TLS\u306e\u5c0e\u5165\u304c\u96e3\u3057\u3044\u5834\u5408\u306f\u3001SSL\/TLS\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u3092\u5229\u7528\u3059\u308b\u3068\u3044\u3046\u9078\u629e\u80a2\u3082\u3042\u308a\u307e\u3059\u3002\u30e1\u30fc\u30eb\u306e\u4e57\u308a\u63db\u3048\u4f5c\u696d\u306f\u767a\u751f\u3057\u307e\u3059\u304c\u3001SSL\/TLS\u3060\u3063\u305f\u308a\u4ed6\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u6a5f\u80fd\u3084DKIM,DMARC\u3068\u3044\u3063\u305f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306a\u3069\u3082\u540c\u6642\u306b\u5229\u7528\u3067\u304d\u308b\u3068\u3044\u3046\u5229\u70b9\u304c\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-red-color has-text-color has-link-color has-small-font-size wp-elements-86e97ed0f47b8d13ef1481eb1f843cf5\">\u203b\u30e1\u30fc\u30eb\u30b5\u30fc\u30d3\u30b9\u306e\u4e2d\u306b\u306f\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u306a\u3044\u30b5\u30fc\u30d3\u30b9\u3082\u3042\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3082\u3061\u308d\u3093\u3001<a href=\"https:\/\/www.kagoya.jp\/kir\/mail\/?argument=vqHX23Xs&amp;dmai=a658cdc207597e\" target=\"_blank\" rel=\"noreferrer noopener\"><strong>KAGOYA\u306e\u30e1\u30fc\u30eb\u30d7\u30e9\u30f3<\/strong><\/a>\u3067\u306fSSL\/TLS\u3060\u3051\u3067\u306f\u306a\u304f\u3001\u9001\u4fe1\u30c9\u30e1\u30a4\u30f3\u8a8d\u8a3c\u3084\u8131PPAP\u3092\u5b9f\u73fe\u3067\u304d\u308b\u6a5f\u80fd\u3092\u642d\u8f09\u3057\u3066\u3044\u307e\u3059\u306e\u3067\u3001\u30d3\u30b8\u30cd\u30b9\u7528\u9014\u3067\u306e\u30e1\u30fc\u30eb\u904b\u7528\u306b\u306f\u6700\u9069\u306a\u30b5\u30fc\u30d3\u30b9\u3068\u306a\u3063\u3066\u304a\u308a\u307e\u3059\u3002<\/p>\n\n\n\n<p class=\"has-gray-color has-text-color has-link-color has-small-font-size wp-elements-030812a86e98a81c936d239f0d8f3c7c\">\u203b1 KAGOYA\u30e1\u30fc\u30eb\u30d7\u30e9\u30f3\u3067\u306f\u3001\u30e1\u30fc\u30eb\u30b5\u30fc\u30d0\u30fc\u9593\u3067SSL\/TLS\u306b\u3088\u308b\u6697\u53f7\u5316\u901a\u3092\u5b9f\u73fe\u3059\u308b\u300cSTARTTLS\u300d\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u307e\u3059\u3002\uff08\u5171\u7528\u30bf\u30a4\u30d7R2\u3067\u306f\u53d7\u4fe1\u306e\u307f\u3001\u4ed6\u30d7\u30e9\u30f3\u306f\u9001\u53d7\u4fe1\u3068\u3082\u306b\u5bfe\u5fdc\uff09<br>\u203b2 KAGOYA\u30e1\u30fc\u30eb\u30d7\u30e9\u30f3\u306e\u516c\u5f0f\u30b5\u30a4\u30c8\u3067\u306f\u30e1\u30fc\u30eb\u9001\u4fe1\u6642\u306e\u6697\u53f7\u5316\u3068\u3057\u3066\u300cSTARTTLS\u300d\u306b\u3001\u30e1\u30fc\u30eb\u53d7\u4fe1\u6642\u306e\u6697\u53f7\u5316\u3068\u3057\u3066\u300cTLS\u300d\u306b\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u3068\u8868\u8a18\u3057\u3066\u3044\u307e\u3059\u3002\u524d\u8ff0\u306e\u3068\u304a\u308a\u3001\u672c\u8a18\u4e8b\u3067\u3044\u3046\u3068\u3053\u308d\u306e\u300cSSL\/TLS\u300d\u306f\u3001TLS\u3068\u540c\u3058\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u8003\u3048\u3066\u9593\u9055\u3044\u3042\u308a\u307e\u305b\u3093\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u307e\u3068\u3081<\/h2>\n\n\n\n<p>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u3001\u30e1\u30fc\u30eb\u306e\u672c\u6587\u3084\u6dfb\u4ed8\u30d5\u30a1\u30a4\u30eb\u3092\u6697\u53f7\u5316\u3057\u7b2c\u4e09\u8005\u304c\u53c2\u7167\u3067\u304d\u306a\u3044\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3092\u3057\u306a\u3044\u3068\u3001\u30e1\u30fc\u30eb\u306f\u8ab0\u306b\u3067\u3082\u8aad\u3081\u308b\u72b6\u614b\u3067\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u3092\u7d4c\u7531\u3059\u308b\u3053\u3068\u306b\u306a\u308a\u307e\u3059\u3002\u30e1\u30fc\u30eb\u306e\u76d7\u8074\u3084\u6539\u3056\u3093\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u307e\u305a\u304a\u3053\u306a\u3046\u3079\u304d\u5bfe\u7b56\u3068\u3044\u3048\u308b\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u3068\u3057\u3066SSL\/TLS\u3068PGP\u30fbS\/MIME\u304c\u3042\u3052\u3089\u308c\u307e\u3059\u3002SSL\/TLS\u306f\u30e1\u30fc\u30eb\u304c\u9001\u53d7\u4fe1\u3055\u308c\u308b\u7d4c\u8def\u3092\u6697\u53f7\u5316\u3059\u308b\u6280\u8853\u3067\u3059\u3002\u4e00\u65b9\u3001PGP\u30fbS\/MIME\u306f\u30e1\u30fc\u30eb\u305d\u306e\u3082\u306e\u3092\u6697\u53f7\u5316\u3057\u307e\u3059\u3002\u4e21\u65b9\u3092\u6d3b\u7528\u3059\u308b\u3053\u3068\u3067\u3001\u30e1\u30fc\u30eb\u306e\u60c5\u5831\u6f0f\u3048\u3044\u5bfe\u7b56\u3092\u5f37\u56fa\u306b\u3059\u308b\u3053\u3068\u304c\u53ef\u80fd\u3067\u3059\u3002<\/p>\n\n\n<div class=\"kh-cta\"><div class=\"entry-content\">\n<div class=\"kh-box has-label is-style-yellow\"><div class=\"kh-box__label\">\u3042\u306a\u305f\u306e\u30e1\u30fc\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5927\u4e08\u592b\u3067\u3059\u304b\uff1f<\/div><div class=\"kh-box__content\">\n<p class=\"has-medium-font-size\"><strong><span class=\"kh-marker-blue\">\u6700\u65b0\u52d5\u5411\u5bfe\u5fdc\u5ea6\u309220\u9805\u76ee\u3067\u5373\u30c1\u30a7\u30c3\u30af\uff01<\/span><\/strong><\/p>\n\n\n\n<p>\u30e1\u30fc\u30eb\u74b0\u5883\u306b\u306f\u3001PPAP\u306e\u9650\u754c\uff0f\u306a\u308a\u3059\u307e\u3057\uff0f\u8aa4\u9001\u4fe1\uff0f\u30d0\u30c3\u30af\u30a2\u30c3\u30d7\u4e0d\u5099\uff0f\u8ff7\u60d1\u30e1\u30fc\u30eb\uff0f\u30a2\u30fc\u30ab\u30a4\u30d6\u4e0d\u8db3\u306a\u3069\u3001\u8907\u5408\u7684\u306a\u30ea\u30b9\u30af\u304c\u96c6\u4e2d\u3057\u3066\u3044\u307e\u3059\u3002<br>\u3053\u306e\u8cc7\u6599\u3067\u30e1\u30fc\u30eb\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u81ea\u5df1\u8a3a\u65ad\u3057\u3001\u73fe\u72b6\u3068\u512a\u5148\u5bfe\u7b56\u3092\u660e\u78ba\u5316\u3057\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full has-lightbox\"><a href=\"https:\/\/www.kagoya.jp\/document\/form-mailsecurity-check\/?argument=vqHX23Xs&amp;dmai=a658cdc89bf06c\" target=\"_blank\" rel=\"noreferrer noopener\"><img decoding=\"async\" width=\"728\" height=\"90\" src=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/c0d5f3c905ab8673bd3286aaef85b3d7.png\" alt=\"\" class=\"wp-image-14327\" srcset=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/c0d5f3c905ab8673bd3286aaef85b3d7.png 728w, https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/c0d5f3c905ab8673bd3286aaef85b3d7-300x37.png 300w\" sizes=\"(max-width: 728px) 100vw, 728px\" \/><\/a><\/figure>\n<\/div><\/div><\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306b\u3088\u3063\u3066\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306b\u3088\u308b\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u5bfe\u7b56\u304c\u5fc5\u8981\u3068\u306a\u308a\u307e\u3059\u3002 \u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3001\u30e1\u30fc\u30eb\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u7b2c\u4e00\u306b\u884c\u3046\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002\u7ba1\u7406\u8005\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6982\u8981\u3084\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u628a\u63e1\u3057\u3066\u304a\u304b\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002  [&hellip;]","protected":false},"author":1,"featured_media":13267,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_coblocks_attr":"","_coblocks_dimensions":"","_coblocks_responsive_height":"","_coblocks_accordion_ie_support":"","footnotes":""},"categories":[125],"tags":[20,68,72],"pickup":[],"sitedisplay":[],"sitetarget":[],"class_list":["post-13265","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-mail","tag-20","tag-68","tag-72"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac - \u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4<\/title>\n<meta name=\"description\" content=\"\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306b\u3088\u3063\u3066\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306b\u3088\u308b\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u5bfe\u7b56\u304c\u5fc5\u8981\u3068\u306a \u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3001\u30e1\u30fc\u30eb\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u7b2c\u4e00\u306b\u884c\u3046\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002\u7ba1\u7406\u8005\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6982\u8981\u3084\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u628a\u63e1\u3057\u3066\u304a\u304b\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u4f55\u304b\u3084\u305d\u306e\u4ed5\u7d44\u307f\u3001\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u81ea\u793e\u304c\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u304b\u628a\u63e1\u3067\u304d\u308b\u3067\u3057\u3087\u3046\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.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/\" \/>\n<meta property=\"og:locale\" content=\"ja_JP\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac - \u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4\" \/>\n<meta property=\"og:description\" content=\"\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306b\u3088\u3063\u3066\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306b\u3088\u308b\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u5bfe\u7b56\u304c\u5fc5\u8981\u3068\u306a \u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3001\u30e1\u30fc\u30eb\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u7b2c\u4e00\u306b\u884c\u3046\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002\u7ba1\u7406\u8005\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6982\u8981\u3084\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u628a\u63e1\u3057\u3066\u304a\u304b\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u4f55\u304b\u3084\u305d\u306e\u4ed5\u7d44\u307f\u3001\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u81ea\u793e\u304c\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u304b\u628a\u63e1\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/\" \/>\n<meta property=\"og:site_name\" content=\"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4\" \/>\n<meta property=\"article:author\" content=\"https:\/\/www.facebook.com\/kagoyajapan\" \/>\n<meta property=\"article:published_time\" content=\"2025-01-10T01:00:00+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2025-01-10T02:21:19+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/email_encryption.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1000\" \/>\n\t<meta property=\"og:image:height\" content=\"525\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:creator\" content=\"@kagoya_inc\" \/>\n<meta name=\"twitter:label1\" content=\"\u57f7\u7b46\u8005\" \/>\n\t<meta name=\"twitter:data1\" content=\"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593\" \/>\n\t<meta name=\"twitter:data2\" content=\"1\u5206\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/\"},\"author\":{\"name\":\"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8\",\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/#\\\/schema\\\/person\\\/ebeeb50541eb80a85fb8c2d4de576ecb\"},\"headline\":\"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\",\"datePublished\":\"2025-01-10T01:00:00+00:00\",\"dateModified\":\"2025-01-10T02:21:19+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/\"},\"wordCount\":249,\"image\":{\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/wp-content\\\/uploads\\\/email_encryption.jpg\",\"keywords\":[\"\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\",\"\u60c5\u30b7\u30b9\u5411\u3051\",\"\u30e1\u30fc\u30eb\"],\"articleSection\":[\"\u30e1\u30fc\u30eb\"],\"inLanguage\":\"ja\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/\",\"url\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/\",\"name\":\"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac - \u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/wp-content\\\/uploads\\\/email_encryption.jpg\",\"datePublished\":\"2025-01-10T01:00:00+00:00\",\"dateModified\":\"2025-01-10T02:21:19+00:00\",\"author\":{\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/#\\\/schema\\\/person\\\/ebeeb50541eb80a85fb8c2d4de576ecb\"},\"description\":\"\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306b\u3088\u3063\u3066\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306b\u3088\u308b\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u5bfe\u7b56\u304c\u5fc5\u8981\u3068\u306a \u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3001\u30e1\u30fc\u30eb\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u7b2c\u4e00\u306b\u884c\u3046\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002\u7ba1\u7406\u8005\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6982\u8981\u3084\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u628a\u63e1\u3057\u3066\u304a\u304b\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u4f55\u304b\u3084\u305d\u306e\u4ed5\u7d44\u307f\u3001\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u81ea\u793e\u304c\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u304b\u628a\u63e1\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/#breadcrumb\"},\"inLanguage\":\"ja\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/#primaryimage\",\"url\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/wp-content\\\/uploads\\\/email_encryption.jpg\",\"contentUrl\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/wp-content\\\/uploads\\\/email_encryption.jpg\",\"width\":1000,\"height\":525},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/it-glossary\\\/mail\\\/email_encryption\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"\u30db\u30fc\u30e0\",\"item\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/#website\",\"url\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/\",\"name\":\"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4\",\"description\":\"\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u904b\u55b6\u4f1a\u793e\u304c\u304a\u5c4a\u3051\u3059\u308b\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u30e1\u30c7\u30a3\u30a2\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"ja\"},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/#\\\/schema\\\/person\\\/ebeeb50541eb80a85fb8c2d4de576ecb\",\"name\":\"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8\",\"image\":{\"@type\":\"ImageObject\",\"inLanguage\":\"ja\",\"@id\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9fe9d72aa704f911132f44fac9fcead4baf347e25402676d6d404127f54190eb?s=96&d=mm&r=g\",\"url\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9fe9d72aa704f911132f44fac9fcead4baf347e25402676d6d404127f54190eb?s=96&d=mm&r=g\",\"contentUrl\":\"https:\\\/\\\/secure.gravatar.com\\\/avatar\\\/9fe9d72aa704f911132f44fac9fcead4baf347e25402676d6d404127f54190eb?s=96&d=mm&r=g\",\"caption\":\"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8\"},\"sameAs\":[\"https:\\\/\\\/www.facebook.com\\\/kagoyajapan\",\"https:\\\/\\\/x.com\\\/kagoya_inc\"],\"url\":\"https:\\\/\\\/www.kagoya.jp\\\/howto\\\/author\\\/kagoya\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac - \u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4","description":"\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306b\u3088\u3063\u3066\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306b\u3088\u308b\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u5bfe\u7b56\u304c\u5fc5\u8981\u3068\u306a \u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3001\u30e1\u30fc\u30eb\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u7b2c\u4e00\u306b\u884c\u3046\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002\u7ba1\u7406\u8005\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6982\u8981\u3084\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u628a\u63e1\u3057\u3066\u304a\u304b\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u4f55\u304b\u3084\u305d\u306e\u4ed5\u7d44\u307f\u3001\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u81ea\u793e\u304c\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u304b\u628a\u63e1\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/","og_locale":"ja_JP","og_type":"article","og_title":"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac - \u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4","og_description":"\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306b\u3088\u3063\u3066\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306b\u3088\u308b\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u5bfe\u7b56\u304c\u5fc5\u8981\u3068\u306a \u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3001\u30e1\u30fc\u30eb\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u7b2c\u4e00\u306b\u884c\u3046\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002\u7ba1\u7406\u8005\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6982\u8981\u3084\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u628a\u63e1\u3057\u3066\u304a\u304b\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u4f55\u304b\u3084\u305d\u306e\u4ed5\u7d44\u307f\u3001\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u81ea\u793e\u304c\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u304b\u628a\u63e1\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002","og_url":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/","og_site_name":"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4","article_author":"https:\/\/www.facebook.com\/kagoyajapan","article_published_time":"2025-01-10T01:00:00+00:00","article_modified_time":"2025-01-10T02:21:19+00:00","og_image":[{"width":1000,"height":525,"url":"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/email_encryption.jpg","type":"image\/jpeg"}],"author":"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8","twitter_card":"summary_large_image","twitter_creator":"@kagoya_inc","twitter_misc":{"\u57f7\u7b46\u8005":"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8","\u63a8\u5b9a\u8aad\u307f\u53d6\u308a\u6642\u9593":"1\u5206"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/#article","isPartOf":{"@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/"},"author":{"name":"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8","@id":"https:\/\/www.kagoya.jp\/howto\/#\/schema\/person\/ebeeb50541eb80a85fb8c2d4de576ecb"},"headline":"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac","datePublished":"2025-01-10T01:00:00+00:00","dateModified":"2025-01-10T02:21:19+00:00","mainEntityOfPage":{"@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/"},"wordCount":249,"image":{"@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/email_encryption.jpg","keywords":["\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3","\u60c5\u30b7\u30b9\u5411\u3051","\u30e1\u30fc\u30eb"],"articleSection":["\u30e1\u30fc\u30eb"],"inLanguage":"ja"},{"@type":"WebPage","@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/","url":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/","name":"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac - \u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4","isPartOf":{"@id":"https:\/\/www.kagoya.jp\/howto\/#website"},"primaryImageOfPage":{"@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/#primaryimage"},"image":{"@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/#primaryimage"},"thumbnailUrl":"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/email_encryption.jpg","datePublished":"2025-01-10T01:00:00+00:00","dateModified":"2025-01-10T02:21:19+00:00","author":{"@id":"https:\/\/www.kagoya.jp\/howto\/#\/schema\/person\/ebeeb50541eb80a85fb8c2d4de576ecb"},"description":"\u30e1\u30fc\u30eb\u3092\u5229\u7528\u3059\u308b\u4f01\u696d\u306b\u3068\u3063\u3066\u3001\u30e1\u30fc\u30eb\u306b\u3088\u3063\u3066\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306e\u88ab\u5bb3\u304c\u767a\u751f\u3059\u308b\u30ea\u30b9\u30af\u3092\u907f\u3051\u308b\u3053\u3068\u306f\u3067\u304d\u307e\u305b\u3093\u3002\u60c5\u5831\u6f0f\u3048\u3044\u306a\u3069\u306b\u3088\u308b\u88ab\u5bb3\u3092\u9632\u3050\u305f\u3081\u306b\u306f\u3001\u5bfe\u7b56\u304c\u5fc5\u8981\u3068\u306a \u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306f\u3001\u30e1\u30fc\u30eb\u306b\u3088\u308b\u60c5\u5831\u6f0f\u3048\u3044\u3092\u9632\u3050\u305f\u3081\u7b2c\u4e00\u306b\u884c\u3046\u3079\u304d\u5bfe\u7b56\u3067\u3059\u3002\u7ba1\u7406\u8005\u306f\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306e\u6982\u8981\u3084\u4ed5\u7d44\u307f\u306b\u3064\u3044\u3066\u3001\u628a\u63e1\u3057\u3066\u304a\u304b\u306a\u304f\u3066\u306f\u306a\u308a\u307e\u305b\u3093\u3002\u3053\u306e\u8a18\u4e8b\u3067\u306f\u3001\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\u4f55\u304b\u3084\u305d\u306e\u4ed5\u7d44\u307f\u3001\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac\u3057\u3066\u3044\u307e\u3059\u3002\u672c\u8a18\u4e8b\u306e\u5185\u5bb9\u3092\u7406\u89e3\u3059\u308c\u3070\u3001\u81ea\u793e\u304c\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u306b\u5bfe\u5fdc\u3059\u308b\u305f\u3081\u306b\u3069\u3046\u3059\u308c\u3070\u3088\u3044\u304b\u628a\u63e1\u3067\u304d\u308b\u3067\u3057\u3087\u3046\u3002","breadcrumb":{"@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/#breadcrumb"},"inLanguage":"ja","potentialAction":[{"@type":"ReadAction","target":["https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/"]}]},{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/#primaryimage","url":"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/email_encryption.jpg","contentUrl":"https:\/\/www.kagoya.jp\/howto\/wp-content\/uploads\/email_encryption.jpg","width":1000,"height":525},{"@type":"BreadcrumbList","@id":"https:\/\/www.kagoya.jp\/howto\/it-glossary\/mail\/email_encryption\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"\u30db\u30fc\u30e0","item":"https:\/\/www.kagoya.jp\/howto\/"},{"@type":"ListItem","position":2,"name":"\u30e1\u30fc\u30eb\u6697\u53f7\u5316\u3068\u306f\uff1f\u4ed5\u7d44\u307f\u304b\u3089\u6697\u53f7\u5316\u306e\u65b9\u6cd5\u307e\u3067\u308f\u304b\u308a\u3084\u3059\u304f\u89e3\u8aac"}]},{"@type":"WebSite","@id":"https:\/\/www.kagoya.jp\/howto\/#website","url":"https:\/\/www.kagoya.jp\/howto\/","name":"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4","description":"\u30c7\u30fc\u30bf\u30bb\u30f3\u30bf\u30fc\u904b\u55b6\u4f1a\u793e\u304c\u304a\u5c4a\u3051\u3059\u308b\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3\u30e1\u30c7\u30a3\u30a2","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/www.kagoya.jp\/howto\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"ja"},{"@type":"Person","@id":"https:\/\/www.kagoya.jp\/howto\/#\/schema\/person\/ebeeb50541eb80a85fb8c2d4de576ecb","name":"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8","image":{"@type":"ImageObject","inLanguage":"ja","@id":"https:\/\/secure.gravatar.com\/avatar\/9fe9d72aa704f911132f44fac9fcead4baf347e25402676d6d404127f54190eb?s=96&d=mm&r=g","url":"https:\/\/secure.gravatar.com\/avatar\/9fe9d72aa704f911132f44fac9fcead4baf347e25402676d6d404127f54190eb?s=96&d=mm&r=g","contentUrl":"https:\/\/secure.gravatar.com\/avatar\/9fe9d72aa704f911132f44fac9fcead4baf347e25402676d6d404127f54190eb?s=96&d=mm&r=g","caption":"\u30ab\u30b4\u30e4\u306e\u30b5\u30fc\u30d0\u30fc\u7814\u7a76\u5ba4 \u7de8\u96c6\u90e8"},"sameAs":["https:\/\/www.facebook.com\/kagoyajapan","https:\/\/x.com\/kagoya_inc"],"url":"https:\/\/www.kagoya.jp\/howto\/author\/kagoya\/"}]}},"views":13755,"_links":{"self":[{"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/posts\/13265","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/comments?post=13265"}],"version-history":[{"count":0,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/posts\/13265\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/media\/13267"}],"wp:attachment":[{"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/media?parent=13265"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/categories?post=13265"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/tags?post=13265"},{"taxonomy":"pickup","embeddable":true,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/pickup?post=13265"},{"taxonomy":"sitedisplay","embeddable":true,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/sitedisplay?post=13265"},{"taxonomy":"sitetarget","embeddable":true,"href":"https:\/\/www.kagoya.jp\/howto\/wp-json\/wp\/v2\/sitetarget?post=13265"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}