{"id":1312,"date":"2024-03-03T12:30:27","date_gmt":"2024-03-03T12:30:27","guid":{"rendered":"https:\/\/blog.lebara.co.uk\/?p=1312"},"modified":"2024-05-13T12:43:11","modified_gmt":"2024-05-13T11:43:11","slug":"mastering-the-abcs-of-mobile-cryptography","status":"publish","type":"post","link":"https:\/\/blog.lebara.co.uk\/ja\/mastering-the-abcs-of-mobile-cryptography\/","title":{"rendered":"\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306eABC\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b"},"content":{"rendered":"<p>\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306eABC\u3092\u30de\u30b9\u30bf\u30fc\u3059\u308b\u3053\u3068\u3067\u3001\u30e2\u30d0\u30a4\u30eb\u30c7\u30d0\u30a4\u30b9\u3067\u306e\u5b89\u5168\u306a\u901a\u4fe1\u3068\u30c7\u30fc\u30bf\u4fdd\u8b77\u306e\u4e16\u754c\u3078\u306e\u6249\u304c\u958b\u304b\u308c\u307e\u3059\u3002\u30c7\u30b8\u30bf\u30eb\u9818\u57df\u306b\u304a\u3051\u308b\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u306e\u8907\u96d1\u3055\u3092\u7d10\u89e3\u304f\u306e\u306f\u5927\u5909\u306a\u4f5c\u696d\u306b\u601d\u3048\u308b\u304b\u3082\u3057\u308c\u307e\u305b\u3093\u304c\u3001\u3054\u5b89\u5fc3\u304f\u3060\u3055\u3044\u3002\u30e1\u30c3\u30bb\u30fc\u30b8\u3084\u500b\u4eba\u60c5\u5831\u306e\u4fdd\u8b77\u304b\u3089\u3001\u5b89\u5168\u306a\u30aa\u30f3\u30e9\u30a4\u30f3\u53d6\u5f15\u306e\u78ba\u4fdd\u307e\u3067\u3001\u3053\u306e\u5305\u62ec\u7684\u306a\u30ac\u30a4\u30c9\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u4e16\u754c\u3092\u81ea\u4fe1\u3092\u6301\u3063\u3066\u822a\u6d77\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u77e5\u8b58\u3068\u30c4\u30fc\u30eb\u3092\u88c5\u5099\u3057\u307e\u3059\u3002\u3088\u308a\u5b89\u5168\u3067\u30bb\u30ad\u30e5\u30a2\u306a\u30c7\u30b8\u30bf\u30eb\u4f53\u9a13\u306e\u305f\u3081\u306b\u3001\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306e\u57fa\u672c\u539f\u7406\u3092\u89e3\u660e\u3057\u306a\u304c\u3089\u3001\u4e00\u7dd2\u306b\u65c5\u306b\u51fa\u307e\u3057\u3087\u3046\u3002<\/p>\n\n\n\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_83 counter-hierarchy ez-toc-counter ez-toc-grey ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">\u76ee\u6b21<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"\u30c8\u30b0\u30eb\u76ee\u6b21\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">\u30c8\u30b0\u30eb<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewbox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" 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class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u304c\u4e0d\u53ef\u6b20\u306a\u7406\u7531\u306f\u3044\u304f\u3064\u304b\u3042\u308b\u3002\u4f55\u3088\u308a\u3082\u307e\u305a\u3001\u901a\u4fe1\u306e\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3057\u3001\u30e2\u30d0\u30a4\u30eb\u30fb\u30c7\u30d0\u30a4\u30b9\u304b\u3089\u9001\u4fe1\u3055\u308c\u308b\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u6a5f\u5bc6\u6027\u3092\u78ba\u4fdd\u3059\u308b\u3002\u3053\u308c\u306f\u3001\u6a5f\u5bc6\u60c5\u5831\u304c\u30e2\u30d0\u30a4\u30eb\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u4e0a\u3067\u983b\u7e41\u306b\u3084\u308a\u53d6\u308a\u3055\u308c\u308b\u6642\u4ee3\u306b\u304a\u3044\u3066\u7279\u306b\u91cd\u8981\u3067\u3042\u308b\u3002\u307e\u305f\u3001\u6697\u53f7\u306f\u8a8d\u8a3c\u30d7\u30ed\u30bb\u30b9\u306b\u304a\u3044\u3066\u3082\u91cd\u8981\u306a\u5f79\u5272\u3092\u679c\u305f\u3057\u3001\u30e6\u30fc\u30b6\u30fc\u3084\u30c7\u30d0\u30a4\u30b9\u306e\u8eab\u5143\u3092\u78ba\u8a8d\u3057\u3001\u306a\u308a\u3059\u307e\u3057\u3084\u30b5\u30fc\u30d3\u30b9\u3078\u306e\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u304b\u3089\u4fdd\u8b77\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u3055\u3089\u306b\u3001\u30e2\u30d0\u30a4\u30eb\u30fb\u30d0\u30f3\u30ad\u30f3\u30b0\u3084\u30c7\u30b8\u30bf\u30eb\u30fb\u30a6\u30a9\u30ec\u30c3\u30c8\u306e\u53f0\u982d\u306b\u3088\u308a\u3001\u6697\u53f7\u306f\u91d1\u878d\u53d6\u5f15\u306e\u4fdd\u8b77\u3001\u8a50\u6b3a\u304b\u3089\u306e\u9632\u5fa1\u3001\u91d1\u878d\u30b7\u30b9\u30c6\u30e0\u306e\u5b8c\u5168\u6027\u306e\u7dad\u6301\u306b\u5f79\u7acb\u3063\u3066\u3044\u308b\u3002\u500b\u4eba\u60c5\u5831\u306e\u76d7\u96e3\u3084\u591a\u984d\u306e\u91d1\u92ad\u7684\u640d\u5931\u306b\u3064\u306a\u304c\u308b\u30c7\u30fc\u30bf\u6f0f\u6d29\u3092\u9632\u3050\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u8981\u3059\u308b\u306b\u3001\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u74b0\u5883\u306b\u304a\u3051\u308b\u4fe1\u983c\u306e\u790e\u3067\u3042\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u5b89\u5fc3\u3057\u3066\u3084\u308a\u53d6\u308a\u3057\u3001\u30d3\u30b8\u30cd\u30b9\u3092\u884c\u3046\u3053\u3068\u304c\u3067\u304d\u308b\u5b89\u5168\u306a\u74b0\u5883\u3092\u4f5c\u308a\u51fa\u3059\u3082\u306e\u306a\u306e\u3067\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Decrypting_Mobile_Cryptography\"><\/span>\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306e\u89e3\u8aad<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Understanding_Encryption_Algorithms\"><\/span>\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u7406\u89e3\u3059\u308b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3068\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306e\u5b89\u5168\u6027\u3092\u652f\u3048\u308b\u6570\u5f0f\u3067\u3042\u308b\u3002\u4e3b\u306b\u5bfe\u79f0\u578b\u3068\u975e\u5bfe\u79f0\u578b\u306e2\u7a2e\u985e\u304c\u3042\u308b\u3002\u5bfe\u79f0\u578b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u3001\u6697\u53f7\u5316\u3068\u5fa9\u53f7\u5316\u306e\u4e21\u65b9\u306b\u540c\u3058\u9375\u3092\u4f7f\u3046\u3002\u4e00\u3064\u306e\u9375\u3067\u91d1\u5eab\u306e\u65bd\u9320\u3068\u89e3\u9320\u304c\u3067\u304d\u308b\u3088\u3046\u306a\u3082\u306e\u3060\u3002AES\uff08Advanced Encryption Standard\uff09\u306f\u73fe\u5728\u6700\u3082\u5e83\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u5bfe\u79f0\u578b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u4e00\u3064\u3067\u3001\u305d\u306e\u901f\u5ea6\u3068\u5b89\u5168\u6027\u3067\u77e5\u3089\u308c\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p>\u4e00\u65b9\u3001\u516c\u958b\u9375\u6697\u53f7\u3068\u3057\u3066\u3082\u77e5\u3089\u308c\u308b\u975e\u5bfe\u79f0\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u3001\u516c\u958b\u9375\u3068\u79d8\u5bc6\u9375\u306e2\u3064\u3092\u4f7f\u3044\u5206\u3051\u308b\u3002\u516c\u958b\u9375\u306f\u8ab0\u3068\u3067\u3082\u5171\u6709\u3055\u308c\u308b\u304c\u3001\u79d8\u5bc6\u9375\u306f\u79d8\u5bc6\u306b\u3055\u308c\u308b\u3002RSA\u306f\u30e2\u30d0\u30a4\u30eb\u30fb\u30c7\u30d0\u30a4\u30b9\u3067\u3088\u304f\u4f7f\u308f\u308c\u308b\u975e\u5bfe\u79f0\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3060\u3002\u610f\u56f3\u3057\u305f\u53d7\u4fe1\u8005\u3060\u3051\u304c\u79d8\u5bc6\u9375\u3092\u4f7f\u3063\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u89e3\u8aad\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3059\u308b\u3002\u3053\u308c\u3089\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u304c\u3069\u306e\u3088\u3046\u306b\u6a5f\u80fd\u3059\u308b\u304b\u3092\u7406\u89e3\u3059\u308b\u3053\u3068\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u3064\u3044\u3066\u5341\u5206\u306a\u60c5\u5831\u3092\u5f97\u305f\u4e0a\u3067\u6c7a\u5b9a\u3059\u308b\u305f\u3081\u306b\u4e0d\u53ef\u6b20\u3067\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Hash_Functions_and_Digital_Signatures\"><\/span>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3068\u30c7\u30b8\u30bf\u30eb\u7f72\u540d<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306e\u3082\u3046\u4e00\u3064\u306e\u91cd\u8981\u306a\u8981\u7d20\u3067\u3042\u308b\u3002\u5165\u529b\u3001\u3064\u307e\u308a\u300c\u30e1\u30c3\u30bb\u30fc\u30b8\u300d\u3092\u53d7\u3051\u53d6\u308a\u3001\u56fa\u5b9a\u30b5\u30a4\u30ba\u306e\u30d0\u30a4\u30c8\u5217\u3001\u901a\u5e38\u306f\u30c7\u30fc\u30bf\u3092\u4e00\u610f\u306b\u8868\u3059\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u3092\u8fd4\u3059\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u4e00\u65b9\u901a\u884c\u3067\u3001\u5143\u306e\u30c7\u30fc\u30bf\u3092\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u304b\u3089\u7c21\u5358\u306b\u5c0e\u304d\u51fa\u3059\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3002\u3053\u306e\u305f\u3081\u3001\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u306f\u30c7\u30fc\u30bf\u306e\u5b8c\u5168\u6027\u3092\u691c\u8a3c\u3059\u308b\u306e\u306b\u7406\u60f3\u7684\u3067\u3042\u308b\u3002\u306a\u305c\u306a\u3089\u3001\u5165\u529b\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u4f55\u3089\u304b\u306e\u5909\u66f4\u304c\u52a0\u3048\u3089\u308c\u308b\u3068\u3001\u30c0\u30a4\u30b8\u30a7\u30b9\u30c8\u304c\u5927\u5e45\u306b\u5909\u308f\u3063\u3066\u3057\u307e\u3046\u304b\u3089\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<p>\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306f\u96fb\u5b50\u6307\u7d0b\u306b\u4f3c\u3066\u3044\u308b\u3002\u30cf\u30c3\u30b7\u30e5\u95a2\u6570\u3068\u516c\u958b\u9375\u6697\u53f7\u3092\u7d44\u307f\u5408\u308f\u305b\u3001\u9001\u4fe1\u8005\u306e\u8eab\u5143\u3092\u8a8d\u8a3c\u3057\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u304c\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3002\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306f\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30cf\u30c3\u30b7\u30e5\u304c\u9001\u4fe1\u8005\u306e\u79d8\u5bc6\u9375\u3067\u6697\u53f7\u5316\u3055\u308c\u305f\u3068\u304d\u306b\u4f5c\u6210\u3055\u308c\u308b\u3002\u53d7\u4fe1\u8005\u306f\u3001\u9001\u4fe1\u8005\u306e\u516c\u958b\u9375\u3092\u4f7f\u3063\u3066\u30cf\u30c3\u30b7\u30e5\u3092\u5fa9\u53f7\u5316\u3057\u3001\u6bd4\u8f03\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u305d\u306e\u30cf\u30c3\u30b7\u30e5\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u30cf\u30c3\u30b7\u30e5\u3068\u4e00\u81f4\u3059\u308c\u3070\u3001\u7f72\u540d\u304c\u691c\u8a3c\u3055\u308c\u308b\u3002\u3053\u306e\u30d7\u30ed\u30bb\u30b9\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u901a\u4fe1\u306b\u304a\u3051\u308b\u4fe1\u983c\u3068\u5426\u8a8d\u9632\u6b62\u3092\u78ba\u7acb\u3059\u308b\u4e0a\u3067\u57fa\u672c\u7684\u306a\u3082\u306e\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"The_Role_of_Private_and_Public_Keys\"><\/span>\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30ad\u30fc\u3068\u30d1\u30d6\u30ea\u30c3\u30af\u30ad\u30fc\u306e\u5f79\u5272<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Distinguishing_Between_Key_Types\"><\/span>\u30ad\u30fc\u30fb\u30bf\u30a4\u30d7\u306e\u533a\u5225<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u3092\u7406\u89e3\u3059\u308b\u4e0a\u3067\u3001\u79d8\u5bc6\u9375\u3068\u516c\u958b\u9375\u3092\u533a\u5225\u3059\u308b\u3053\u3068\u306f\u91cd\u8981\u3067\u3042\u308b\u3002\u79d8\u5bc6\u9375\u3068\u306f\u3001\u6240\u6709\u8005\u304c\u96a0\u3057\u3066\u304a\u304f\u79d8\u5bc6\u306e\u9375\u306e\u3053\u3068\u3067\u3001\u60c5\u5831\u306e\u89e3\u8aad\u3084\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u306e\u4f5c\u6210\u306b\u4f7f\u308f\u308c\u308b\u3002\u500b\u4eba\u306e\u91d1\u5eab\u306e\u9375\u306e\u3088\u3046\u306a\u3082\u306e\u3067\u3001\u6240\u6709\u8005\u3060\u3051\u304c\u30a2\u30af\u30bb\u30b9\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<p>\u5bfe\u7167\u7684\u306b\u3001\u516c\u958b\u9375\u306f\u4ed6\u8005\u3068\u81ea\u7531\u306b\u5171\u6709\u3055\u308c\u3001\u79d8\u5bc6\u9375\u306e\u6240\u6709\u8005\u5b9b\u3066\u306e\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6697\u53f7\u5316\u3057\u305f\u308a\u3001\u5bfe\u5fdc\u3059\u308b\u79d8\u5bc6\u9375\u3067\u4f5c\u6210\u3055\u308c\u305f\u30c7\u30b8\u30bf\u30eb\u7f72\u540d\u3092\u691c\u8a3c\u3057\u305f\u308a\u3059\u308b\u306e\u306b\u4f7f\u308f\u308c\u308b\u3002\u516c\u958b\u9375\u306f\u3001\u8ab0\u3067\u3082\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6295\u51fd\u3067\u304d\u308b\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u306e\u3088\u3046\u306a\u3082\u306e\u3060\u3068\u60f3\u50cf\u3057\u3066\u307b\u3057\u3044\u3002\u3057\u304b\u3057\u3001\u30e1\u30fc\u30eb\u30dc\u30c3\u30af\u30b9\u3092\u958b\u3051\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8aad\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u306e\u306f\u3001\u79d8\u5bc6\u9375\u3092\u6301\u3063\u3066\u3044\u308b\u4eba\u3060\u3051\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u3053\u306e2\u3064\u306e\u9375\u306e\u7d44\u307f\u5408\u308f\u305b\u304c\u3001\u516c\u958b\u9375\u6697\u53f7\u3092\u5f37\u529b\u306a\u3082\u306e\u306b\u3057\u3066\u3044\u308b\u3002\u4e8b\u524d\u306b\u79d8\u5bc6\u9375\u3092\u4ea4\u63db\u3059\u308b\u3053\u3068\u306a\u304f\u5f53\u4e8b\u8005\u9593\u306e\u5b89\u5168\u306a\u901a\u4fe1\u3092\u53ef\u80fd\u306b\u3057\u3001\u9375\u306e\u6f0f\u6d29\u306e\u53ef\u80fd\u6027\u3092\u5927\u5e45\u306b\u4f4e\u6e1b\u3059\u308b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"The_Power_of_Public_Key_Infrastructure\"><\/span>\u516c\u958b\u9375\u57fa\u76e4\u306e\u529b<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u516c\u958b\u9375\u57fa\u76e4\uff08PKI\uff09\u306f\u3001\u516c\u958b\u6697\u53f7\u9375\u306e\u914d\u5e03\u3068\u8b58\u5225\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30d5\u30ec\u30fc\u30e0\u30ef\u30fc\u30af\u3067\u3042\u308a\u3001\u30e6\u30fc\u30b6\u30fc\u3068\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u304c\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\u3092\u4ecb\u3057\u3066\u5b89\u5168\u306b\u30c7\u30fc\u30bf\u3092\u4ea4\u63db\u3057\u3001\u76f8\u624b\u306e\u8eab\u5143\u3092\u8a8d\u8a3c\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u306b\u3059\u308b\u3002PKI\u306e\u4e2d\u5fc3\u306f\u3001\u30c7\u30b8\u30bf\u30eb\u8a3c\u660e\u66f8\u3092\u767a\u884c\u3059\u308b\u30a8\u30f3\u30c6\u30a3\u30c6\u30a3\u3067\u3042\u308b\u8a8d\u8a3c\u5c40\uff08CA\uff09\u3067\u3042\u308b\u3002\u3053\u308c\u3089\u306e\u8a3c\u660e\u66f8\u306f\u3001\u8a3c\u660e\u66f8\u306e\u540d\u524d\u4ed8\u304d\u30b5\u30d6\u30b8\u30a7\u30af\u30c8\u306b\u3088\u308b\u516c\u958b\u9375\u306e\u6240\u6709\u6a29\u3092\u691c\u8a3c\u3059\u308b\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u30a4\u30f3\u30d5\u30e9\u306f\u3001\u516c\u958b\u9375\u304c\u672c\u7269\u3067\u3042\u308a\u3001\u6539\u3056\u3093\u3055\u308c\u3066\u3044\u306a\u3044\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u3053\u3068\u3067\u3001\u30c7\u30b8\u30bf\u30eb\u74b0\u5883\u306b\u304a\u3051\u308b\u9ad8\u3044\u30ec\u30d9\u30eb\u306e\u4fe1\u983c\u3092\u53ef\u80fd\u306b\u3059\u308b\u3002\u3053\u308c\u306f\u30a4\u30f3\u30bf\u30fc\u30cd\u30c3\u30c8\u306b\u304a\u3051\u308b\u30d1\u30b9\u30dd\u30fc\u30c8\u30fb\u30b7\u30b9\u30c6\u30e0\u306b\u4f3c\u3066\u304a\u308a\u3001\u500b\u4eba\u3001\u30c7\u30d0\u30a4\u30b9\u3001\u30b5\u30fc\u30d3\u30b9\u306b\u691c\u8a3c\u3055\u308c\u305fID\u3092\u63d0\u4f9b\u3059\u308b\u3002PKI\u306e\u5a01\u529b\u306f\u3001\u96fb\u5b50\u30e1\u30fc\u30eb\u306e\u3084\u308a\u3068\u308a\u304b\u3089\u30aa\u30f3\u30e9\u30a4\u30f3\u30fb\u30d0\u30f3\u30ad\u30f3\u30b0\u307e\u3067\u3001\u7121\u6570\u306e\u30aa\u30f3\u30e9\u30a4\u30f3\u6d3b\u52d5\u306b\u304a\u3044\u3066\u5b89\u5168\u306a\u6697\u53f7\u5316\u901a\u4fe1\u3068\u8a8d\u8a3c\u3092\u53ef\u80fd\u306b\u3059\u308b\u80fd\u529b\u306b\u3042\u308a\u3001\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306e\u4e0d\u53ef\u6b20\u306a\u8981\u7d20\u3068\u306a\u3063\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Implementing_Mobile_Cryptography\"><\/span>\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306e\u5b9f\u88c5<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Choosing_the_Right_Cryptography_Tools\"><\/span>\u6b63\u3057\u3044\u6697\u53f7\u5316\u30c4\u30fc\u30eb\u306e\u9078\u629e<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u9069\u5207\u306a\u30c4\u30fc\u30eb\u3092\u9078\u629e\u3059\u308b\u3053\u3068\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u3092\u5b9f\u88c5\u3059\u308b\u4e0a\u3067\u975e\u5e38\u306b\u91cd\u8981\u306a\u30b9\u30c6\u30c3\u30d7\u3067\u3042\u308b\u3002\u9069\u5207\u306a\u9078\u629e\u306f\u3001\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306e\u5177\u4f53\u7684\u306a\u8981\u4ef6\u3068\u5fc5\u8981\u3068\u3055\u308c\u308b\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30fb\u30ec\u30d9\u30eb\u306b\u3088\u3063\u3066\u7570\u306a\u308a\u307e\u3059\u3002\u307b\u3068\u3093\u3069\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u306f\u3001\u5bfe\u79f0\u6697\u53f7\u5316\u306b\u306fAES\u3001\u975e\u5bfe\u79f0\u6697\u53f7\u5316\u306b\u306fRSA\u3084ECC\uff08\u6955\u5186\u66f2\u7dda\u6697\u53f7\uff09\u3068\u3044\u3063\u305f\u696d\u754c\u6a19\u6e96\u306e\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u5341\u5206\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u30c4\u30fc\u30eb\u3092\u8a55\u4fa1\u3059\u308b\u969b\u306b\u306f\u3001\u4f7f\u3044\u3084\u3059\u3055\u3068\u3001\u65e2\u5b58\u30b7\u30b9\u30c6\u30e0\u3068\u306e\u7d71\u5408\u306e\u305f\u3081\u306e\u30b5\u30dd 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class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Best_Practices_for_Mobile_Security\"><\/span>\u30e2\u30d0\u30a4\u30eb\u30fb\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u3092\u52b9\u679c\u7684\u306b\u5c0e\u5165\u3059\u308b\u306b\u306f\u3001\u30d9\u30b9\u30c8\u30d7\u30e9\u30af\u30c6\u30a3\u30b9\u306e\u9075\u5b88\u304c\u4e0d\u53ef\u6b20\u3067\u3042\u308b\u3002\u30e6\u30fc\u30b6\u30fc\u306f\u3001\u5f37\u56fa\u3067\u30e6\u30cb\u30fc\u30af\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u4f7f\u7528\u3057\u3001\u4e0d\u6b63\u30a2\u30af\u30bb\u30b9\u3092\u9632\u3050\u305f\u3081\u306b\u5b9a\u671f\u7684\u306b\u5909\u66f4\u3059\u308b\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u4e8c\u8981\u7d20\u8a8d\u8a3c\u306f\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u30ec\u30a4\u30e4\u30fc\u3092\u8ffd\u52a0\u3057\u3001\u30a2\u30ab\u30a6\u30f3\u30c8\u6f0f\u6d29\u306e\u30ea\u30b9\u30af\u3092\u5927\u5e45\u306b\u4f4e\u6e1b\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<p>\u958b\u767a\u8005\u306f\u3001\u6700\u65b0\u306e\u6697\u53f7\u5316\u6a19\u6e96\u3092\u4f7f\u7528\u3057\u3001\u65b0\u3057\u3044\u8106\u5f31\u6027\u304b\u3089\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u3092\u5e38\u306b\u66f4\u65b0\u3057\u3066\u304a\u304f\u5fc5\u8981\u304c\u3042\u308a\u307e\u3059\u3002\u307e\u305f\u3001\u30b3\u30fc\u30c9\u30fb\u30a4\u30f3\u30b8\u30a7\u30af\u30b7\u30e7\u30f3\u653b\u6483\u306a\u3069\u306e\u60aa\u7528\u3092\u9632\u3050\u305f\u3081\u306b\u3001\u5b89\u5168\u306a\u30b3\u30fc\u30c7\u30a3\u30f3\u30b0\u624b\u6cd5\u3092\u63a1\u7528\u3059\u308b\u3053\u3068\u3082\u91cd\u8981\u3067\u3059\u3002<\/p>\n\n\n\n<p>\u7d44\u7e54\u306b\u3068\u3063\u3066\u3001\u5305\u62ec\u7684\u306a\u30e2\u30d0\u30a4\u30eb\u30fb\u30c7\u30d0\u30a4\u30b9\u7ba1\u7406\uff08MDM\uff09\u30dd\u30ea\u30b7\u30fc\u3092\u5c0e\u5165\u3059\u308b\u3053\u3068\u3067\u3001\u6a5f\u5bc6\u30c7\u30fc\u30bf\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5236\u5fa1\u3057\u3001\u793e\u5185\u3067\u4f7f\u7528\u3055\u308c\u308b\u30c7\u30d0\u30a4\u30b9\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u7ba1\u7406\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002\u3055\u3089\u306b\u3001\u5b9a\u671f\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u76e3\u67fb\u3068\u5f93\u696d\u54e1\u30c8\u30ec\u30fc\u30cb\u30f3\u30b0\u3092\u5b9f\u65bd\u3059\u308b\u3053\u3068\u3067\u3001\u6f5c\u5728\u7684\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ae\u30e3\u30c3\u30d7\u3092\u7279\u5b9a\u3057\u3001\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u885b\u751f\u3092\u7dad\u6301\u3059\u308b\u3053\u3068\u306e\u91cd\u8981\u6027\u306b\u3064\u3044\u3066\u30e6\u30fc\u30b6\u30fc\u3092\u6559\u80b2\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<p>\u3053\u308c\u3089\u306e\u6163\u884c\u306b\u5f93\u3046\u3053\u3068\u3067\u3001\u500b\u4eba\u3082\u7d44\u7e54\u3082\u3001\u30c7\u30b8\u30bf\u30eb\u4e16\u754c\u3067\u9032\u5316\u3057\u7d9a\u3051\u308b\u8105\u5a01\u306b\u5bfe\u3059\u308b\u9632\u5fa1\u3092\u5f37\u5316\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"The_Future_of_Mobile_Cryptography\"><\/span>\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306e\u672a\u6765<span class=\"ez-toc-section-end\"><\/span><\/h2>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"The_Impact_of_Quantum_Computing\"><\/span>\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u30fc\u306e\u30a4\u30f3\u30d1\u30af\u30c8<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306f\u3001\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306b\u8ab2\u984c\u3068\u6a5f\u4f1a\u306e\u4e21\u65b9\u3092\u3082\u305f\u3089\u3059\u3002\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u81a8\u5927\u306a\u51e6\u7406\u80fd\u529b\u306f\u3001\u73fe\u5728\u4f7f\u308f\u308c\u3066\u3044\u308b\u6697\u53f7\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u591a\u304f\u3092\u7834\u308b\u53ef\u80fd\u6027\u3092\u79d8\u3081\u3066\u3044\u308b\u3002\u4f8b\u3048\u3070\u3001RSA\u306e\u3088\u3046\u306a\u5927\u304d\u306a\u6570\u306e\u56e0\u6570\u5206\u89e3\u306e\u96e3\u3057\u3055\u306b\u57fa\u3065\u304f\u516c\u958b\u9375\u30b7\u30b9\u30c6\u30e0\u306f\u8106\u5f31\u306b\u306a\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002<\/p>\n\n\n\n<p>\u3053\u306e\u8feb\u308a\u6765\u308b\u8105\u5a01\u304c\u3001\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u3067\u3055\u3048\u89e3\u8aad\u304c\u56f0\u96e3\u3068\u601d\u308f\u308c\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u958b\u767a\u306b\u6ce8\u529b\u3057\u3066\u3044\u308b\u7814\u7a76\u8005\u305f\u3061\u306b\u3088\u3063\u3066\u3001\u91cf\u5b50\u8010\u6027\u6697\u53f7\u306e\u958b\u767a\u306b\u62cd\u8eca\u3092\u304b\u3051\u3066\u3044\u308b\u3002\u3053\u308c\u3089\u306e\u65b0\u3057\u3044\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u3001\u683c\u5b50\u306b\u57fa\u3065\u304f\u6697\u53f7\u306a\u3069\u3001\u91cf\u5b50\u653b\u6483\u306b\u5bfe\u3057\u3066\u514d\u75ab\u304c\u3042\u308b\u3068\u8003\u3048\u3089\u308c\u3066\u3044\u308b\u6570\u5b66\u7684\u554f\u984c\u306b\u57fa\u3065\u3044\u3066\u3044\u308b\u3002<\/p>\n\n\n\n<p>\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306e\u5b9f\u7528\u5316\u30fb\u666e\u53ca\u306f\u307e\u3060\u73fe\u5b9f\u7684\u3067\u306f\u306a\u3044\u305f\u3081\u3001\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306e\u5b8c\u5168\u306a\u5f71\u97ff\u306f\u307e\u3060\u4e0d\u900f\u660e\u3067\u3042\u308b\u3002\u3057\u304b\u3057\u3001\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u306e\u5206\u91ce\u306f\u3001\u30dd\u30b9\u30c8\u91cf\u5b50\u4e16\u754c\u306b\u304a\u3044\u3066\u3082\u30c7\u30fc\u30bf\u306e\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b\u3001\u3053\u308c\u3089\u306e\u9032\u6b69\u306b\u5148\u3093\u3058\u305f\u9032\u5316\u3092\u9042\u3052\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002\u5c06\u6765\u3078\u306e\u5099\u3048\u3068\u306f\u3001\u7814\u7a76\u306b\u6295\u8cc7\u3057\u3001\u4eca\u65e5\u304b\u3089\u8010\u91cf\u5b50\u6280\u8853\u3092\u7d71\u5408\u3057\u59cb\u3081\u308b\u3053\u3068\u3067\u3042\u308b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"replaceWithId\"><span class=\"ez-toc-section\" id=\"Potential_Challenges_and_Solutions\"><\/span>\u60f3\u5b9a\u3055\u308c\u308b\u8ab2\u984c\u3068\u89e3\u6c7a\u7b56<span class=\"ez-toc-section-end\"><\/span><\/h3>\n\n\n\n<p>\u30e2\u30d0\u30a4\u30eb\u6697\u53f7\u304c\u9032\u5316\u3059\u308b\u306b\u3064\u308c\u3001\u3044\u304f\u3064\u304b\u306e\u8ab2\u984c\u304c\u6d6e\u304b\u3073\u4e0a\u304c\u3063\u3066\u304f\u308b\u3002\u305d\u306e\u4e2d\u3067\u3082\u7279\u306b\u91cd\u8981\u306a\u306e\u306f\u3001\u5f37\u56fa\u306a\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3068\u30e6\u30fc\u30b6\u30fc\u306e\u5229\u4fbf\u6027\u306e\u30d0\u30e9\u30f3\u30b9\u3092\u53d6\u308b\u5fc5\u8981\u6027\u3067\u3042\u308b\u3002\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5bfe\u7b56\u304c\u3042\u307e\u308a\u306b\u7169\u96d1\u3067\u3042\u308c\u3070\u3001\u30e6\u30fc\u30b6\u30fc\u306f\u305d\u308c\u3092\u56de\u907f\u3059\u308b\u65b9\u6cd5\u3092\u6a21\u7d22\u3057\u3001\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u67a0\u7d44\u307f\u304c\u640d\u306a\u308f\u308c\u308b\u53ef\u80fd\u6027\u304c\u3042\u308b\u3002\u89e3\u6c7a\u7b56\u3068\u3057\u3066\u306f\u3001\u751f\u4f53\u8a8d\u8a3c\u306e\u3088\u3046\u306a\u30bb\u30ad\u30e5\u30a2\u306a\u8a8d\u8a3c\u65b9\u6cd5\u3068\u30b7\u30fc\u30e0\u30ec\u30b9\u306b\u7d71\u5408\u3059\u308b\u30e6\u30fc\u30b6\u30fc\u30d5\u30ec\u30f3\u30c9\u30ea\u30fc\u306a\u30a4\u30f3\u30bf\u30d5\u30a7\u30fc\u30b9\u3092\u8a2d\u8a08\u3059\u308b\u3053\u3068\u304c\u6319\u3052\u3089\u308c\u308b\u3002<\/p>\n\n\n\n<p>\u3082\u30461\u3064\u306e\u8ab2\u984c\u306f\u3001\u51e6\u7406\u80fd\u529b\u30ec\u30d9\u30eb\u304c\u7570\u306a\u308b\u591a\u69d8\u306a\u30e2\u30d0\u30a4\u30eb\u30fb\u30c7\u30d0\u30a4\u30b9\u3068\u3001\u305d\u306e\u7d44\u307f\u5408\u308f\u305b\u3067\u3042\u308b\u3002 <a href=\"https:\/\/blog.lebara.co.uk\/ja\/say-goodbye-to-storage-woes-simple-steps-to-free-up-phone-space\/\">\u30b9\u30c8\u30ec\u30fc\u30b8<\/a> 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