{"id":22874,"date":"2024-05-08T10:58:15","date_gmt":"2024-05-08T14:58:15","guid":{"rendered":"https:\/\/www.lpi.org\/ja\/articles\/%e6%9a%97%e5%8f%b7%e6%8a%80%e8%a1%93%e3%81%ae%e7%9f%ad%e6%9c%9f%e9%9b%86%e4%b8%ad%e3%82%b3%e3%83%bc%e3%82%b9\/"},"modified":"2024-05-08T10:58:15","modified_gmt":"2024-05-08T14:58:15","slug":"a-crash-course-in-cryptography","status":"publish","type":"post","link":"https:\/\/www.lpi.org\/ja\/blog\/2024\/05\/08\/a-crash-course-in-cryptography\/","title":{"rendered":"\u6697\u53f7\u6280\u8853\u306e\u77ed\u671f\u96c6\u4e2d\u30b3\u30fc\u30b9"},"content":{"rendered":"<p>\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u4e16\u754c\u306b\u306f\u9b45\u529b\u7684\u306a\u30c8\u30d4\u30c3\u30af\u304c\u305f\u304f\u3055\u3093\u3042\u308b\u304c\u3001\uff08\u3053\u308c\u306f\u7d14\u7c8b\u306b\u500b\u4eba\u7684\u306a\u610f\u898b\u3060\u304c\uff09\u79c1\u304c\u4ed6\u306e\u3069\u306e\u30c8\u30d4\u30c3\u30af\u3088\u308a\u3082\u512a\u308c\u3066\u3044\u308b\u3082\u306e\u30921\u3064\u6319\u3052\u308b\u3068\u3059\u308c\u3070\u3001\u6697\u53f7\u6280\u8853\u304c\u6700\u3082\u9ad8\u3044\u30ec\u30d9\u30eb\u3092\u5360\u3081\u308b\u3060\u308d\u3046\u3002<\/p>\n<p>\u3053\u306e\u30c8\u30d4\u30c3\u30af\u306f\u7d14\u7c8b\u6570\u5b66\u306b\u6700\u3082\u6df1\u304f\u6839\u3056\u3057\u3066\u3044\u308b\u304c\u3001\u73fe\u5728\u3067\u306f\u4f55\u5343\u4eba\u3082\u306e\u4eba\u3005\u306e\u65e5\u5e38\u751f\u6d3b\u306b\u304a\u3051\u308b\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306e\u591a\u304f\u306e\u5206\u91ce\u306b\u89e6\u308c\u3066\u3044\u308b\u3002 \u305d\u308c\u306f\u8907\u6570\u306e\u30ec\u30d9\u30eb\u3067\u5b58\u5728\u3057\u3001\u79c1\u305f\u3061\u306e\u96fb\u5b50\u7684\u306a\u79d8\u5bc6\u3092\u5b88\u308b\u9375\u306a\u306e\u3060\u3002<\/p>\n<p>\u3057\u304b\u3057&#8230;\u6697\u53f7\u3068\u306f\u4f55\u306a\u306e\u304b\uff1f<\/p>\n<h2>\u5bfe\u79f0\u6697\u53f7\u3068\u975e\u5bfe\u79f0\u6697\u53f7<\/h2>\n<p>\u6697\u53f7\u306f\u3001\u6a29\u9650\u306e\u306a\u3044\u4eba\u306b\u306f\u8aad\u3081\u306a\u3044\u5f62\u5f0f\u3067\u30b3\u30f3\u30c6\u30f3\u30c4\u3092\u6697\u53f7\u5316\u3059\u308b\u65b9\u6cd5\u3067\u3042\u308b\u3002 \u3053\u308c\u306f\u3001\u30c7\u30fc\u30bf\u306e\u5b89\u5168\u3092\u5b88\u308b\u305f\u3081\u306e\u4e00\u9023\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u3067\u69cb\u6210\u3055\u308c\u3066\u3044\u308b\u3002 \u6697\u53f7\u5316\u3068\u3044\u3046\u7528\u8a9e\u306f\u3001\u6697\u53f7\u6280\u8853\u3068\u307b\u307c\u540c\u7fa9\u3067\u3042\u308b\u3002<\/p>\n<p>\u5143\u306e\u30c6\u30ad\u30b9\u30c8\u306f\u8ab0\u3067\u3082\u8aad\u3080\u3053\u3068\u304c\u3067\u304d\u3001\u30af\u30ea\u30a2\u30c6\u30ad\u30b9\u30c8\u307e\u305f\u306f<em>\u30d7\u30ec\u30fc\u30f3\u30c6\u30ad\u30b9\u30c8<\/em>\u3068\u547c\u3070\u308c\u308b\u3002 \u6697\u53f7\u5316\u306f<em>\u6697\u53f7\u5316\u3055\u308c\u305f\u30c6\u30ad\u30b9\u30c8<\/em>\u3092\u751f\u6210\u3059\u308b\u3002<\/p>\n<p>\u4fdd\u8b77\u3055\u308c\u3066\u3044\u306a\u3044\u63a5\u7d9a\u3092\u4f7f\u7528\u3059\u308b\u5834\u5408\u3001\u9069\u5207\u306a\u6697\u53f7\u5316\u30d7\u30ed\u30c8\u30b3\u30eb\u304c\u306a\u3051\u308c\u3070\u3001\u8ee2\u9001\u4e2d\u306e\u30c7\u30fc\u30bf\u3092\u5e73\u6587\u3067\u898b\u308b\u3053\u3068\u3067\u3001\u30b9\u30cc\u30fc\u30d1\u30fc\u304c\u500b\u4eba\u60c5\u5831\u3092\u76d7\u3080\u3053\u3068\u306f\u6bd4\u8f03\u7684\u5bb9\u6613\u3067\u3059\u3002 \u4f8b\u3048\u3070\u3001\u3042\u306a\u305f\u304c\u30ab\u30d5\u30a7\u3067\u6697\u53f7\u3067\u4fdd\u8b77\u3055\u308c\u3066\u3044\u306a\u3044\u63a5\u7d9a\u3067\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u9001\u4fe1\u3059\u308b\u3068\u3001\u4ed6\u306e\u30c6\u30fc\u30d6\u30eb\u306e\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u3044\u308b\u4eba\u304c\u3042\u306a\u305f\u306e\u30c8\u30e9\u30d5\u30a3\u30c3\u30af\u3092\u62fe\u3044\u3001\u3042\u306a\u305f\u306e\u96fb\u5b50\u30e1\u30fc\u30eb\u3092\u8aad\u3080\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n<p>\u69d8\u3005\u306a\u6697\u53f7\u306e\u7a2e\u985e\u3092\u5bfe\u79f0\u578b\u3068\u975e\u5bfe\u79f0\u578b\u306b\u5206\u985e\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u3002<\/p>\n<p><em>\u5bfe\u79f0\u6697\u53f7<\/em>\u306f\u3001\u540c\u30581\u3064\u306e\u79d8\u5bc6\u9375\u3092\u4f7f\u3063\u3066\u30af\u30ea\u30a2\u306a\u60c5\u5831\u3092\u6697\u53f7\u5316\u3057\u3001\u305d\u308c\u3092\u5fa9\u53f7\u5316\u3059\u308b\u3002 \u30c6\u30ad\u30b9\u30c8\u304c\u500b\u4eba\u9593\u3067\u9001\u4fe1\u3055\u308c\u308b\u5834\u5408\u3001\u9001\u4fe1\u8005\u3068\u53d7\u4fe1\u8005\u306e\u4e21\u65b9\u304c\u540c\u3058\u30ad\u30fc\u3092\u4f7f\u7528\u3059\u308b\u3002<\/p>\n<p>\u5b9f\u969b\u306b\u306f\u3001\u9001\u4fe1\u8005\u306f\u79d8\u5bc6\u306e\u9375\u3067\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6697\u53f7\u5316\u3057\u3001\u901a\u4fe1\u30c1\u30e3\u30cd\u30eb\u3092\u901a\u3058\u3066\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u9001\u4fe1\u3059\u308b\u3002 \u53d7\u4fe1\u8005\u306f\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u53d7\u3051\u53d6\u308a\u3001\u79d8\u5bc6\u9375\u3067\u5fa9\u53f7\u3059\u308b\u3002 \u53d7\u4fe1\u8005\u306f\u901a\u5e38\u3001\u3042\u3089\u304b\u3058\u3081\u5b9a\u7fa9\u3055\u308c\u305f\u5b89\u5168\u306a\u9001\u4fe1\u30c1\u30e3\u30cd\u30eb\u3092\u901a\u3057\u3066\u9001\u4fe1\u8005\u304b\u3089\u9375\u3092\u53d7\u3051\u53d6\u308b\u3002 \u5b89\u5168\u306a\u9001\u4fe1\u30c1\u30e3\u30cd\u30eb&#8230;&#8230;\u30e1\u30c3\u30bb\u30fc\u30b8\u306b\u4f7f\u308f\u308c\u305f\u306e\u3068\u9055\u3046\u30c1\u30e3\u30cd\u30eb\u3002 \u3068\u3044\u3046\u306e\u3082\u3001\u5b9a\u7fa9\u4e0a\u3001\u305d\u306e\u30c1\u30e3\u30cd\u30eb\u306f\u653b\u6483\u8005\u306b\u95b2\u89a7\u53ef\u80fd\u3067\u3042\u308b\u3068\u60f3\u5b9a\u3055\u308c\u3066\u3044\u308b\u304b\u3089\u3060\u3002<\/p>\n<p>\u9375\u306f\u3001\u5f53\u4e8b\u8005\u9593\u3067\u5171\u6709\u3055\u308c\u308b\u79d8\u5bc6\u3092\u8868\u3057\u3001\u60c5\u5831\u306e\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30fb\u30ea\u30f3\u30af\u3092\u7dad\u6301\u3059\u308b\u305f\u3081\u306b\u4f7f\u7528\u3067\u304d\u308b\u3002<\/p>\n<p>\u5bfe\u79f0\u6697\u53f7\u306f\u6bd4\u8f03\u7684\u5358\u7d14\u3067\uff08\u9375\u3092\u4f5c\u308b\u305f\u3081\u306e\u6570\u5b66\u306f\u975e\u5e38\u306b\u9ad8\u5ea6\u3060\u304c\uff09\u3001\u5b9f\u88c5\u304c\u7c21\u5358\u3067\u3001\u5168\u4f53\u7684\u306a\u6027\u80fd\u3082\u9ad8\u3044\u3002<\/p>\n<p>\u5bfe\u79f0\u6697\u53f7\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306e\u4e2d\u306b\u306f\u3001\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308b\uff1a<\/p>\n<ul>\n<li>DES<\/li>\n<li>3DES<\/li>\n<li>AES<\/li>\n<\/ul>\n<p>\u305d\u306e\u4e2d\u3067\u3082AES\u306f\u73fe\u5728\u6700\u3082\u8fd1\u4ee3\u7684\u3067\u5805\u7262\u3067\u3042\u308a\u3001\u653f\u5e9c\u6a5f\u95a2\u3067\u3082\u975e\u5e38\u306b\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u60c5\u5831\u306b\u3088\u304f\u4f7f\u308f\u308c\u3066\u3044\u308b\u3002<\/p>\n<p>\u516c\u958b\u9375\u6697\u53f7\u3068\u3057\u3066\u3082\u77e5\u3089\u308c\u308b<em>\u975e\u5bfe\u79f0\u6697\u53f7<\/em>\u306f\u30012\u3064\u306e\u7570\u306a\u308b\u9375\u3092\u7528\u3044\u3066\u30c7\u30fc\u30bf\u3092\u6697\u53f7\u5316\u30fb\u5fa9\u53f7\u5316\u3059\u308b\u3002 \u3053\u306e2\u3064\u306e\u9375\u306f\u300c\u516c\u958b\u9375\u300d\u3068\u300c\u79d8\u5bc6\u9375\u300d\u3068\u540d\u4ed8\u3051\u3089\u308c\u308b\u3002 \u516c\u958b\u9375\u306f\u3001\u9001\u4fe1\u8005\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u8aad\u3081\u308b\u3088\u3046\u306b\u3057\u305f\u3044\u5834\u6240\u3067\u3042\u308c\u3070\u3069\u3053\u306b\u3067\u3082\u914d\u5e03\u3059\u308b\u3053\u3068\u304c\u3067\u304d\u308b\u304c\u3001\u79d8\u5bc6\u9375\u306f\u3082\u3061\u308d\u3093\u79d8\u5bc6\u306b\u3057\u3066\u304a\u304b\u306a\u3051\u308c\u3070\u306a\u3089\u306a\u3044\u3002<\/p>\n<p>2\u3064\u306e\u9375\u306e\u3069\u3061\u3089\u304b\u304c\u30e1\u30c3\u30bb\u30fc\u30b8\u3092\u6697\u53f7\u5316\u3057\u305f\u5834\u5408\u3001\u3082\u3046\u4e00\u65b9\u306e\u9375\u3067\u3057\u304b\u5fa9\u53f7\u5316\u3067\u304d\u306a\u3044\u3002<\/p>\n<p>\u975e\u5bfe\u79f0\u6697\u53f7\u306f\u3001\u9375\u304c\u9577\u304f\u3001\u5b9f\u884c\u3055\u308c\u308b\u95a2\u9023\u8a08\u7b97\u304c\u306f\u308b\u304b\u306b\u8907\u96d1\u3067\u3042\u308b\u305f\u3081\u3001\u5bfe\u79f0\u6697\u53f7\u306b\u6bd4\u3079\u3066\u8457\u3057\u304f\u9045\u3044\u3002<\/p>\n<p>\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u9375\u306e\u9577\u3055\u304c\u975e\u5e38\u306b\u9577\u3044\u305f\u3081\u3001\u95a2\u9023\u3059\u308b\u516c\u958b\u9375\u304b\u3089\u79d8\u5bc6\u9375\u3092\u5c0e\u304d\u51fa\u3059\u3053\u3068\u306f\u4e8b\u5b9f\u4e0a\u4e0d\u53ef\u80fd\u3067\u3042\u308b\u3002<\/p>\n<p>\u516c\u958b\u9375\u306f\u3001\u653b\u6483\u8005\u304c\u596a\u53d6\u3067\u304d\u308b\u3088\u3046\u306a\u7d4c\u8def\u3067\u5b89\u5168\u306b\u9001\u4fe1\u3067\u304d\u308b\u305f\u3081\u3001\u5bfe\u79f0\u6697\u53f7\u3067\u4f7f\u7528\u3059\u308b\u79d8\u5bc6\u9375\u306e\u4ea4\u63db\u306b\u306f\u975e\u5bfe\u79f0\u6697\u53f7\u304c\u4f7f\u308f\u308c\u308b\u3053\u3068\u304c\u591a\u3044\u3002<\/p>\n<p>\u975e\u5bfe\u79f0\u6697\u53f7\u3092\u30b5\u30dd\u30fc\u30c8\u3059\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u306f\u6b21\u306e\u3088\u3046\u306a\u3082\u306e\u304c\u3042\u308b\uff1a<\/p>\n<ul>\n<li>El Gamal<\/li>\n<li>Diffie Hellman<\/li>\n<li>RSA<\/li>\n<\/ul>\n<p>RSA\u306f\u3001\u305d\u306e\u4f7f\u3044\u3084\u3059\u3055\u3068\u3001<a href=\"https:\/\/dash.harvard.edu\/bitstream\/handle\/1\/42029772\/CHEN-DISSERTATION-2019.pdf?sequence=1\" target=\"_blank\" rel=\"noopener\">\u8a08\u7b97\u30a8\u30f3\u30c8\u30ed\u30d4\u30fc<\/a>\u306b\u7531\u6765\u3059\u308b\u672c\u8cea\u7684\u306a\u5805\u7262\u6027\u304b\u3089\u3001\u30e1\u30c3\u30bb\u30fc\u30b8\u306e\u6697\u53f7\u5316\u3068\u7f72\u540d\u306b\u597d\u307e\u308c\u308b\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3067\u3042\u308b\u3002<\/p>\n<h2>\u516c\u958b\u9375\u57fa\u76e4\uff08PKI\uff09<\/h2>\n<p>\u975e\u5bfe\u79f0\u9375\u306f\u3001\u6697\u53f7\u5316\u306b\u304a\u3051\u308b\u3082\u3046\u4e00\u3064\u306e\u57fa\u672c\u7684\u306a\u30a4\u30f3\u30d5\u30e9\u6982\u5ff5\u3067\u3042\u308b\uff1a <em>\u516c\u958b\u9375\u57fa\u76e4\uff08PKI\uff09<\/em>\u3067\u3042\u308b\u3002<\/p>\n<p>PKI \u306f\u3001\u300c\u4fe1\u983c\u3067\u304d\u308b\u300d\u6a29\u5a01\u3042\u308b\u7b2c\u4e09\u8005\u304c\u30e6\u30fc\u30b6\u30fc\u306e\u8eab\u5143\u3092\u6c7a\u5b9a\u3057\u3001\u516c\u958b\u9375\u304c\u305d\u306e\u30e6\u30fc\u30b6\u30fc\u306b\u6b63\u5f53\u306b\u5e30\u5c5e \u3059\u308b\u3053\u3068\u3092\u691c\u8a3c\u3067\u304d\u308b\u3088\u3046\u306b\u3059\u308b\u4e00\u9023\u306e\u30d7\u30ed\u30bb\u30b9\u3068\u30c4\u30fc\u30eb\u3067\u3042\u308b\u3002<\/p>\n<p>PKI\u306e\u80cc\u666f\u306b\u3042\u308b\u306e\u306f\u3001\u30e6\u30fc\u30b6\u30fc\u304c\u30aa\u30f3\u30e9\u30a4\u30f3\u4e0a\u3067\u6700\u521d\u306e\u30b3\u30f3\u30bf\u30af\u30c8\u3092\u53d6\u308b\u3068\u304d\u3001\u4f8b\u3048\u3070\u5c0f\u58f2\u5e97\u306e\u30a6\u30a7\u30d6\u30b5\u30a4\u30c8\u306b\u30ed\u30b0\u30a4\u30f3\u3059\u308b\u3068\u304d\u3001\u5f7c\u3089\u304c\u671b\u3080\u5b9f\u5728\u306e\u4eba\u7269\u3084\u4f01\u696d\u306b\u63a5\u89e6\u3057\u3066\u3044\u308b\u304b\u3069\u3046\u304b\u308f\u304b\u3089\u306a\u3044\u3068\u3044\u3046\u3053\u3068\u3067\u3042\u308b\u3002 \u60aa\u610f\u306e\u3042\u308b &#8220;\u4e2d\u9593\u8005 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\/>\n\u8a8d\u8a3c\u5c40\uff08CA\uff09\u3068\u547c\u3070\u308c\u308b\u30b5\u30a4\u30c8\u306f\u3001\u53cc\u65b9\u304b\u3089\u8a8d\u3081\u3089\u308c\u4fe1\u983c\u3055\u308c\u3066\u304a\u308a\u3001\u30b5\u30a4\u30c8\u3092\u516c\u958b\u9375\u306b\u5b89\u5168\u306b\u7d50\u3073\u3064\u3051\u308b\u30c7\u30b8\u30bf\u30eb\u8a3c\u660e\u66f8\u3092\u4f5c\u6210\u3059\u308b\u3002 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S\/MIME\u306f\u3001\u4e3b\u306b\u5927\u898f\u6a21\u306a\u30a6\u30a7\u30d6\u30d9\u30fc\u30b9\u306e\u96fb\u5b50\u30e1\u30fc\u30eb\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u3067\u4f7f\u7528\u3055\u308c\u3066\u3044\u308b\u3002<\/p>\n<p>PGP\/MIME\u306f\u3001Pretty Good Privacy\/Multipurpose Internet Mail Extensions\u306e\u7565\u3067\u3001\u5206\u6563\u578b\u6a29\u5a01\u30e2\u30c7\u30eb\u3092\u4f7f\u7528\u3057\u3066\u3044\u308b\u3002 S\/MIME\u3068\u306f\u5bfe\u7167\u7684\u306b\u3001\u9375\u306e\u7ba1\u7406\u306fCA\u306b\u3088\u3063\u3066\u7ba1\u7406\u3055\u308c\u308b\u306e\u3067\u306f\u306a\u304f\u3001\u30e6\u30fc\u30b6\u30fc\u306e\u8cac\u4efb\u3068\u306a\u308a\u307e\u3059\u3002 \u3053\u306e\u30d7\u30ed\u30c8\u30b3\u30eb\u306f\u3001\u30b5\u30fc\u30c9\u30d1\u30fc\u30c6\u30a3\u306e\u6697\u53f7\u5316\u30bd\u30d5\u30c8\u30a6\u30a7\u30a2\u306b\u4f9d\u5b58\u3057\u3066\u3044\u308b\u3002<\/p>\n<p>PGP\/MIME\u306f\u30d7\u30ed\u30d7\u30e9\u30a4\u30a8\u30bf\u30ea\u306a\u3082\u306e\u3060\u3002 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\/>\n\u30b9\u30c8\u30ec\u30fc\u30b8\u5074\u306e\u6697\u53f7\u5316\u306f\u3001\u7279\u306b\u30c7\u30d0\u30a4\u30b9\u304c\u76d7\u96e3\u306b\u3042\u3063\u305f\u5834\u5408\u306b\u30c7\u30fc\u30bf\u306e\u5b89\u5168\u6027\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306e\u7d20\u6674\u3089\u3057\u3044\u65b9\u6cd5\u3060\u3002<\/p>\n<p>Linux\u30e6\u30fc\u30b6\u30fc\u306f\u3001Linux Unified Key Setup (LUKS)\u306b\u3088\u3063\u3066\u30c7\u30fc\u30bf\u3092\u5b89\u5168\u306b\u4fdd\u3064\u3053\u3068\u304c\u3067\u304d\u308b\u3002 \u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\uff08\u7dcf\u5f53\u305f\u308a\uff09\u6697\u53f7\u5316\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u3092\u63a1\u7528\u3057\u3001\u5f37\u529b\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u4f7f\u7528\u3055\u308c\u308c\u3070\u30c7\u30fc\u30bf\u3092\u5b8c\u5168\u306b\u4fdd\u8b77\u3059\u308b\u3002 LUKS\u306f\u73fe\u5728\u3001\u30d0\u30fc\u30b8\u30e7\u30f32\u3067\u3042\u308b\u3002<\/p>\n<p>\u65b0\u3057\u3044Linux\u30c7\u30a3\u30b9\u30c8\u30ea\u30d3\u30e5\u30fc\u30b7\u30e7\u30f3\u3067\u306f\u3001\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30fb\u30b7\u30b9\u30c6\u30e0\u306e\u30a4\u30f3\u30b9\u30c8\u30fc\u30eb\u306e\u6700\u5f8c\u306b\u3001\u30c7\u30a3\u30b9\u30af\u306e\u5185\u5bb9\u3078\u306e\u30a2\u30af\u30bb\u30b9\u3092\u5236\u5fa1\u3059\u308b\u305f\u3081\u306e\u5f37\u529b\u306a\u30d1\u30b9\u30ef\u30fc\u30c9\u3092\u8a2d\u5b9a\u3059\u308b\u30d5\u30eb\u30c7\u30a3\u30b9\u30af\u6697\u53f7\u5316\uff08FDE\uff09\u3082\u63d0\u4f9b\u3055\u308c\u3066\u3044\u308b\u3002 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\u3053\u306e\u30b7\u30ea\u30fc\u30ba\u306e\u524d\u56de\u306e\u8a18\u4e8b\u3092\u8aad\u3080<\/a><\/p>\n<p>&nbsp;<\/p>\n<p>\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306b\u3064\u3044\u3066\u3001\u307e\u305f\u30c7\u30fc\u30bf\u3068\u8a55\u5224\u3092\u5b88\u308b\u65b9\u6cd5\u306b\u3064\u3044\u3066\u3082\u3063\u3068\u77e5\u308a\u305f\u3044\u65b9\u306f\u3001<a href=\"https:\/\/www.lpi.org\/our-certifications\/security-essentials-overview\/\">Linux Professional Institute Security Essentials<\/a>\u3092\u3054\u89a7\u304f\u3060\u3055\u3044\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u60c5\u5831\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u4e16\u754c\u306b\u306f\u9b45\u529b\u7684\u306a\u30c8\u30d4\u30c3\u30af\u304c\u305f\u304f\u3055\u3093\u3042\u308b\u304c\u3001\uff08\u3053\u308c\u306f\u7d14\u7c8b\u306b\u500b\u4eba\u7684 &#8230; <a href=\"https:\/\/www.lpi.org\/ja\/blog\/2024\/05\/08\/a-crash-course-in-cryptography\/\" class=\"button-link\">Read 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Bertulli\"},\"description\":\"Simone \\\"Simo\\\" Bertulli is a Cyber Security Expert and a Linux Enterprise Specialist; he started working on Linux systems since 2012, then extending his interest to the whole open source world, also creating a community in the Italian reality. 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