{"id":716,"date":"2026-07-08T06:17:09","date_gmt":"2026-07-08T06:17:09","guid":{"rendered":"https:\/\/rufreevpn.org\/"},"modified":"2026-07-08T06:17:09","modified_gmt":"2026-07-08T06:17:09","slug":"what-is-aes-25","status":"publish","type":"post","link":"https:\/\/rufreevpn.org\/ja\/post\/what-is-aes-25\/","title":{"rendered":"AES-256\u3068\u306f\uff1f \u9ad8\u5ea6\u6697\u53f7\u5316\u6a19\u6e96\u306e\u5b8c\u5168\u30ac\u30a4\u30c9"},"content":{"rendered":"<p class=\"wp-block-paragraph\">AES-256\uff08256\u30d3\u30c3\u30c8\u9375\u9577\u306eAdvanced Encryption Standard\uff09\u306f\u3001\u5bfe\u79f0\u30c7\u30fc\u30bf\u6697\u53f7\u5316\u306b\u304a\u3051\u308b\u4e16\u754c\u7684\u306a\u4e0d\u5909\u306e\u30d9\u30f3\u30c1\u30de\u30fc\u30af\u3067\u3059\u3002\u5bfe\u79f0\u6697\u53f7\u3068\u3057\u3066\u3001\u5358\u4e00\u306e\u5171\u6709\u79d8\u5bc6\u9375\u3092\u4f7f\u7528\u3057\u3066\u3001\u5e73\u6587\u3092\u8aad\u307f\u53d6\u308a\u4e0d\u53ef\u80fd\u306a\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u30c7\u30fc\u30bf\u306b\u6697\u53f7\u5316\u3057\u3001\u5143\u306e\u5f62\u5f0f\u306b\u5fa9\u53f7\u5316\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<figure data-wp-context=\"{&quot;imageId&quot;:&quot;6a9bfbe3da961&quot;}\" data-wp-interactive=\"core\/image\" data-wp-key=\"6a9bfbe3da961\" class=\"wp-block-image aligncenter size-large wp-lightbox-container\"><img fetchpriority=\"high\" decoding=\"async\" width=\"1024\" height=\"512\" data-wp-class--hide=\"state.isContentHidden\" data-wp-class--show=\"state.isContentVisible\" data-wp-init=\"callbacks.setButtonStyles\" data-wp-on--click=\"actions.showLightbox\" data-wp-on--load=\"callbacks.setButtonStyles\" data-wp-on--pointerdown=\"actions.preloadImage\" data-wp-on--pointerenter=\"actions.preloadImageWithDelay\" data-wp-on--pointerleave=\"actions.cancelPreload\" data-wp-on-window--resize=\"callbacks.setButtonStyles\" src=\"https:\/\/rufreevpn.org\/wp-content\/uploads\/2026\/07\/1184cccb-dc8b-45c2-93bc-13c3e85f7d8e-1024x512.jpeg\" alt=\"AES-256\" class=\"wp-image-717\" srcset=\"\" sizes=\"(max-width: 1024px) 100vw, 1024px\" data-srcset=\"\" \/><button\n\t\t\tclass=\"lightbox-trigger\"\n\t\t\ttype=\"button\"\n\t\t\taria-haspopup=\"dialog\"\n\t\t\tdata-wp-bind--aria-label=\"state.thisImage.triggerButtonAriaLabel\"\n\t\t\tdata-wp-init=\"callbacks.initTriggerButton\"\n\t\t\tdata-wp-on--click=\"actions.showLightbox\"\n\t\t\tdata-wp-style--right=\"state.thisImage.buttonRight\"\n\t\t\tdata-wp-style--top=\"state.thisImage.buttonTop\"\n\t\t>\n\t\t\t<svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"12\" height=\"12\" fill=\"none\" viewbox=\"0 0 12 12\">\n\t\t\t\t<path fill=\"#fff\" d=\"M2 0a2 2 0 0 0-2 2v2h1.5V2a.5.5 0 0 1 .5-.5h2V0H2Zm2 10.5H2a.5.5 0 0 1-.5-.5V8H0v2a2 2 0 0 0 2 2h2v-1.5ZM8 12v-1.5h2a.5.5 0 0 0 .5-.5V8H12v2a2 2 0 0 1-2 2H8Zm2-12a2 2 0 0 1 2 2v2h-1.5V2a.5.5 0 0 0-.5-.5H8V0h2Z\" \/>\n\t\t\t<\/svg>\n\t\t<\/button><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">2001\u5e74\u3001\u7c73\u56fd\u56fd\u7acb\u6a19\u6e96\u6280\u8853\u7814\u7a76\u6240\uff08NIST\uff09\u304c\u4e3b\u50ac\u3057\u305f\u6570\u5e74\u306b\u308f\u305f\u308b\u516c\u958b\u30b3\u30f3\u30da\u30c6\u30a3\u30b7\u30e7\u30f3\u3092\u7d4c\u3066\u3001\u7c73\u56fd\u653f\u5e9c\u306b\u3088\u3063\u3066\u6b63\u5f0f\u306b\u63a1\u7528\u3055\u308c\u305fAES\u306f\u3001\u8001\u673d\u5316\u3057\u305f\u30c7\u30fc\u30bf\u6697\u53f7\u5316\u6a19\u6e96\uff08DES\uff09\u3092\u7f6e\u304d\u63db\u3048\u308b\u305f\u3081\u306b\u9078\u3070\u308c\u307e\u3057\u305f\u3002\u30d9\u30eb\u30ae\u30fc\u306e\u6697\u53f7\u5b66\u8005\u30b8\u30e7\u30a2\u30f3\u30fb\u30c0\u30a4\u30e1\u30f3\u3068\u30d5\u30a3\u30f3\u30bb\u30f3\u30c8\u30fb\u30e9\u30a4\u30e1\u30f3\u306b\u3088\u308b\u30a8\u30ec\u30ac\u30f3\u30c8\u306a&#8220;Rijndael&#8220;\u6697\u53f7\u306b\u57fa\u3065\u304f\u53d7\u8cde\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u3001\u73fe\u5728\u3001\u8ecd\u4e8b\u7d44\u7e54\u3001\u91d1\u878d\u6a5f\u95a2\u3001\u305d\u3057\u3066\u3042\u3089\u3086\u308b\u4fe1\u983c\u3067\u304d\u308b\u7121\u6599VPN\u3084\u30d7\u30ec\u30df\u30a2\u30e0\u30d7\u30e9\u30a4\u30d0\u30b7\u30fc\u30c4\u30fc\u30eb\u3092\u542b\u3080\u30b5\u30a4\u30d0\u30fc\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30a2\u30d7\u30ea\u30b1\u30fc\u30b7\u30e7\u30f3\u306b\u3088\u3063\u3066\u3001\u6975\u3081\u3066\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u30c7\u30fc\u30bf\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u4e16\u754c\u4e2d\u3067\u4fe1\u983c\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">\u6838\u5fc3\u3068\u306a\u308b\u6307\u6a19\uff1aAES\u9375\u30b5\u30a4\u30ba\u306e\u7406\u89e3<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Advanced Encryption Standard\u306f\u30013\u3064\u306e\u7570\u306a\u308b\u9375\u9577\u3092\u4f7f\u7528\u3057\u3066\u52d5\u4f5c\u3057\u307e\u3059\u3002\u30d3\u30c3\u30c8\u9577\u304c\u5897\u52a0\u3059\u308b\u306b\u3064\u308c\u3066\u3001\u6697\u53f7\u3092\u89e3\u8aad\u3059\u308b\u305f\u3081\u306b\u5fc5\u8981\u306a\u8a08\u7b97\u80fd\u529b\u306f\u6307\u6570\u95a2\u6570\u7684\u306b\u5897\u5927\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>AES-128:<\/strong> \u65e5\u5e38\u7684\u306a\u6c4e\u7528\u30c7\u30fc\u30bf\u4fdd\u8b77\u306b\u5bfe\u3057\u3066\u3001\u5805\u7262\u306a\u6a19\u6e96\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>AES-192<\/strong> \u9ad8\u5ea6\u306b\u6a5f\u5bc6\u6027\u306e\u9ad8\u3044\u4f01\u696d\u30c7\u30fc\u30bf\u306b\u7279\u5316\u3057\u305f\u3001\u5f37\u5316\u3055\u308c\u305f\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u5c64\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>AES-256<\/strong> \u6700\u5927\u7d1a\u306e\u8ecd\u4e8b\u30ec\u30d9\u30eb\u306e\u4fdd\u8b77\u3092\u63d0\u4f9b\u3057\u3001\u6700\u9ad8\u6a5f\u5bc6\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u8a2d\u8a08\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">AES-256\u306f\u6700\u3082\u9577\u3044\u9375\u9577\u3092\u5229\u7528\u3059\u308b\u305f\u3081\u3001\u5929\u6587\u5b66\u7684\u306b\u5e83\u5927\u306a\u9375\u7a7a\u9593\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30d6\u30eb\u30fc\u30c8\u30d5\u30a9\u30fc\u30b9\u653b\u6483\u306b\u5bfe\u3057\u3066\u4e8b\u5b9f\u4e0a\u8010\u6027\u3092\u6301\u3061\u3001\u59a5\u5354\u306e\u306a\u3044\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u306e\u57fa\u672c\u57fa\u6e96\u3068\u3057\u3066\u78ba\u7acb\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">AES-256\u306e\u4ed5\u7d44\u307f\uff1a\u6697\u53f7\u5316\u30b9\u30af\u30e9\u30f3\u30d6\u30eb\u30d7\u30ed\u30bb\u30b9<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u30d5\u30a1\u30a4\u30eb\u5168\u4f53\u3084\u30c7\u30fc\u30bf\u30b9\u30c8\u30ea\u30fc\u30e0\u3092\u4e00\u5ea6\u306b\u51e6\u7406\u3059\u308b\u306e\u3067\u306f\u306a\u304f\u3001AES-256\u306f\u30c7\u30fc\u30bf\u3092128\u30d3\u30c3\u30c8\u306e\u56fa\u5b9a\u30b5\u30a4\u30ba\u306e\u30d6\u30ed\u30c3\u30af\u306b\u5206\u5272\u3057\u307e\u3059\u3002\u305d\u306e\u5f8c\u3001\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f256\u30d3\u30c3\u30c8\u306e\u9375\u3092\u9069\u7528\u3057\u3066\u3001\u3059\u3079\u3066\u306e\u30d6\u30ed\u30c3\u30af\u306b\u5bfe\u3057\u306614\u56de\u306e\u53b3\u683c\u306a\u30e9\u30a6\u30f3\u30c9\u306e\u8907\u96d1\u306a\u6570\u5b66\u7684\u5909\u63db\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">The 4 Pillars of an AES Computational Round<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">14\u30e9\u30a6\u30f3\u30c9\u306e\u5404\u56de\u306b\u304a\u3044\u3066\u3001\u30c7\u30fc\u30bf\u306f\u5b8c\u5168\u306a\u6df7\u4e71\u3068\u62e1\u6563\u3092\u78ba\u4fdd\u3059\u308b\u305f\u3081\u306b4\u3064\u306e\u7570\u306a\u308b\u6697\u53f7\u5316\u30b9\u30c6\u30c3\u30d7\u3092\u7d4c\u308b\uff1a<\/p>\n\n\n\n<ol start=\"1\" class=\"wp-block-list\">\n<li><strong>SubBytes (\u7f6e\u63db):<\/strong> \u30c7\u30fc\u30bf\u306e\u3059\u3079\u3066\u306e\u30d0\u30a4\u30c8\u306f\u3001\u53b3\u683c\u3067\u4e8b\u524d\u306b\u5b9a\u7fa9\u3055\u308c\u305f\u6697\u53f7\u5316\u30eb\u30c3\u30af\u30a2\u30c3\u30d7\u30c6\u30fc\u30d6\u30eb\uff08S-box\uff09\u306b\u57fa\u3065\u3044\u3066\u3001\u307e\u3063\u305f\u304f\u7570\u306a\u308b\u30d0\u30a4\u30c8\u306b\u7f6e\u304d\u63db\u3048\u3089\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30b7\u30d5\u30c8\u30ed\u30a6\uff08\u7f6e\u63db\uff09:<\/strong> \u30c7\u30fc\u30bf\u306e\u884c\u306f\u3001\u898f\u5247\u7684\u306a\u30d1\u30bf\u30fc\u30f3\u3084\u69cb\u9020\u3092\u58ca\u3059\u305f\u3081\u306b\u3001\u7cfb\u7d71\u7684\u306b\u6c34\u5e73\u65b9\u5411\u306b\u30b7\u30d5\u30c8\u3055\u308c\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>MixColumns\uff08\u6df7\u5408\uff09:<\/strong> \u30c7\u30fc\u30bf\u884c\u5217\u306e\u5217\u306f\u3001\u5358\u4e00\u30d3\u30c3\u30c8\u306e\u5909\u66f4\u306b\u3088\u3063\u3066\u30d6\u30ed\u30c3\u30af\u5168\u4f53\u304c\u5909\u5316\u3059\u308b\u3053\u3068\u3092\u4fdd\u8a3c\u3059\u308b\u305f\u3081\u306b\u6570\u5b66\u7684\u306b\u30d6\u30ec\u30f3\u30c9\u3055\u308c\u308b\u3002<\/li>\n\n\n\n<li><strong>\u30e9\u30a6\u30f3\u30c9\u9375\u52a0\u7b97<\/strong> \u4e00\u610f\u306e\u30b5\u30d6\u30ad\u30fc\u2014&#8220;\u30ad\u30fc\u62e1\u5f35&#8221;\u30d5\u30a7\u30fc\u30ba\u4e2d\u306b\u5143\u306e256\u30d3\u30c3\u30c8\u30de\u30b9\u30bf\u30fc\u30ad\u30fc\u304b\u3089\u6d3e\u751f\u3057\u305f\u3082\u306e\u2014\u304c\u30d6\u30ed\u30c3\u30af\u3068\u6570\u5b66\u7684\u306b\u7d44\u307f\u5408\u308f\u305b\u3089\u308c\u308b\u3002<\/li>\n<\/ol>\n\n\n\n<div class=\"aes-compare-container\">\n    <h3 class=\"aes-title\">\u6280\u8853\u6bd4\u8f03: AES-128 vs. AES-256<\/h3>\n    <p class=\"aes-intro\">\u4e21\u65b9\u306e\u30d0\u30ea\u30a2\u30f3\u30c8\u306f\u975e\u5e38\u306b\u5b89\u5168\u3067\u3042\u308b\u304c\u3001\u305d\u308c\u3089\u306e\u5185\u90e8\u69cb\u9020\u3068\u7406\u60f3\u7684\u306a\u5c55\u958b\u306f\u7570\u306a\u308b\uff1a<\/p>\n    \n    <div class=\"aes-table-wrapper\">\n        <table class=\"aes-compare-table\">\n            <thead>\n                <tr>\n                    <th class=\"sticky-col\">\u7279\u5fb4<\/th>\n                    <th>AES-128<\/th>\n                    <th class=\"highlight-aes256\">AES-256<\/th>\n                <\/tr>\n            <\/thead>\n            <tbody>\n                <tr>\n                    <td class=\"sticky-col font-medium\">\u30ad\u30fc\u9577<\/td>\n                    <td>128-bit<\/td>\n                    <td class=\"tech-badge\">256-bit<\/td>\n                <\/tr>\n                <tr>\n                    <td class=\"sticky-col font-medium\">\u6697\u53f7\u5316\u30e9\u30a6\u30f3\u30c9<\/td>\n                    <td>10 Rounds<\/td>\n                    <td>14 Rounds<\/td>\n                <\/tr>\n                <tr>\n                    <td class=\"sticky-col font-medium\">\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u30ec\u30d9\u30eb<\/td>\n                    <td>\u975e\u5e38\u306b\u9ad8\u3044<\/td>\n                    <td class=\"security-ultimate\">\u7a76\u6975 \/ \u672a\u6765\u5bfe\u5fdc<\/td>\n                <\/tr>\n                <tr>\n                    <td class=\"sticky-col font-medium\">\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u901f\u5ea6<\/td>\n                    <td class=\"speed-fast\">\u901f\u3044<\/td>\n                    <td class=\"speed-slower\">\u5c11\u3057\u9045\u3044<\/td>\n                <\/tr>\n                <tr>\n                    <td class=\"sticky-col font-medium\">\u30a8\u30f3\u30bf\u30fc\u30d7\u30e9\u30a4\u30ba\u30d9\u30fc\u30b9\u30e9\u30a4\u30f3<\/td>\n                    <td>\u5171\u901a<\/td>\n                    <td class=\"baseline-top\">\u6700\u9ad8\u6a5f\u5bc6\u30c7\u30fc\u30bf\u306e\u57fa\u6e96<\/td>\n                <\/tr>\n            <\/tbody>\n        <\/table>\n    <\/div>\n    \n    <div class=\"aes-note\">\n        <strong>\u6ce8\u8a18:<\/strong> AES-256\u306f\u3088\u308a\u591a\u304f\u306e\u6570\u5b66\u7684\u6f14\u7b97\u3092\u4f34\u3044\u307e\u3059\u304c\u3001Intel&#8217;s AES-NI\u306e\u3088\u3046\u306a\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u30a2\u30af\u30bb\u30e9\u30ec\u30fc\u30b7\u30e7\u30f3\u3092\u5185\u8535\u3057\u305f\u6700\u65b0\u306e\u30d7\u30ed\u30bb\u30c3\u30b5\u306f\u3001\u5b9f\u969b\u306e\u30d1\u30d5\u30a9\u30fc\u30de\u30f3\u30b9\u306e\u5dee\u3092\u30a8\u30f3\u30c9\u30e6\u30fc\u30b6\u30fc\u306b\u3068\u3063\u3066\u4e8b\u5b9f\u4e0a\u898b\u3048\u306a\u3044\u3082\u306e\u306b\u3057\u3066\u3044\u307e\u3059\u3002\n    <\/div>\n<\/div>\n\n<style>\n\/* \u5bb9\u5668\u53ca\u5b57\u4f53\u57fa\u7840\u8bbe\u7f6e *\/\n.aes-compare-container {\n    margin: 30px auto;\n    font-family: -apple-system, BlinkMacSystemFont, \"Segoe UI\", Roboto, sans-serif;\n    max-width: 100%;\n}\n\n\/* \u5e26\u6709 #5fa5fa \u5de6\u8fb9\u6846\u7684\u73b0\u4ee3\u6807\u9898 *\/\n.aes-title {\n    font-size: 20px;\n    font-weight: 700;\n    color: #333333;\n    margin: 0 0 8px 0 !important;\n    padding-left: 12px;\n    border-left: 5px solid #5fa5fa;\n    line-height: 1.2;\n}\n\n\/* \u5bfc\u8bed\u6837\u5f0f *\/\n.aes-intro {\n    font-size: 14.5px;\n    color: #666666;\n    margin: 0 0 20px 0 !important;\n}\n\n\/* \u6838\u5fc3\u5305\u88f9\u5c42\uff1a\u63d0\u4f9b\u624b\u673a\u7aef\u6d41\u7545\u7684\u6a2a\u5411\u6eda\u52a8 *\/\n.aes-table-wrapper {\n    width: 100%;\n    overflow-x: auto;\n    -webkit-overflow-scrolling: touch;\n    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);\n    border-radius: 8px;\n    border: 1px solid #edf2f7;\n    background: #ffffff;\n}\n\n\/* \u81ea\u5b9a\u4e49\u5fae\u578b\u6eda\u52a8\u6761\u6837\u5f0f *\/\n.aes-table-wrapper::-webkit-scrollbar {\n    height: 6px;\n}\n.aes-table-wrapper::-webkit-scrollbar-thumb {\n    background: #cbd5e0;\n    border-radius: 3px;\n}\n\n\/* \u8868\u683c\u6837\u5f0f *\/\n.aes-compare-table {\n    width: 100%;\n    border-collapse: separate;\n    border-spacing: 0;\n    text-align: left;\n}\n\n.aes-compare-table th,\n.aes-compare-table td {\n    padding: 14px 18px;\n    font-size: 14.5px;\n    line-height: 1.5;\n    border-bottom: 1px solid #edf2f7;\n    white-space: nowrap; \/* \u7535\u8111\u7aef\u9632\u4e71\u6362\u884c *\/\n}\n\n\/* \u8868\u5934\u5e95\u8272 *\/\n.aes-compare-table th {\n    background: #f7fafc;\n    color: #4a5568;\n    font-weight: 700;\n}\n\n\/* \ud83c\udf1f \u9996\u5217\u7edd\u5bf9\u9501\u5b9a\u6280\u672f\uff08Sticky Column\uff09 *\/\n.sticky-col {\n    position: -webkit-sticky;\n    position: sticky;\n    left: 0;\n    background: #f7fafc !important;\n    font-weight: 600;\n    color: #2d3748;\n    z-index: 2;\n    border-right: 2px solid #edf2f7;\n    min-width: 150px;\n}\n\n\/* \u91cd\u70b9\u7a81\u51fa AES-256 \u5217\uff08\u878d\u5165\u6de1\u5316 #5fa5fa\uff09 *\/\n.highlight-aes256 {\n    background-color: rgba(95, 165, 250, 0.12) !important;\n    color: #2b6cb0 !important;\n}\n.aes-compare-table tbody tr:hover td.highlight-aes256 {\n    background-color: rgba(95, 165, 250, 0.16) !important;\n}\n\n\/* \u60ac\u505c\u884c\u9ad8\u4eae *\/\n.aes-compare-table tbody tr:hover td {\n    background-color: #f8fafc;\n}\n\n\/* \u7ec6\u8282\u5c5e\u6027\u9ad8\u4eae *\/\n.tech-badge {\n    font-weight: 700;\n    color: #2b6cb0;\n}\n\n.security-ultimate {\n    color: #2f855a;\n    font-weight: 600;\n}\n\n.speed-fast {\n    color: #38a169;\n    font-weight: 600;\n}\n\n.speed-slower {\n    color: #718096;\n}\n\n.baseline-top {\n    color: #2b6cb0;\n    font-weight: 600;\n}\n\n\/* \u5e95\u90e8 Note \u63d0\u793a\u6846\u6837\u5f0f *\/\n.aes-note {\n    margin-top: 16px;\n    padding: 14px 16px;\n    background-color: rgba(95, 165, 250, 0.05);\n    border-radius: 6px;\n    border-left: 4px solid #5fa5fa;\n    font-size: 13.5px;\n    line-height: 1.6;\n    color: #4a5568;\n}\n\n\/* \ud83d\udcf1 \u79fb\u52a8\u7aef\u81ea\u9002\u5e94\uff08\u9488\u5bf9\u5c0f\u4e8e 768px \u7684\u5c4f\u5e55\uff09 *\/\n@media screen and (max-width: 768px) {\n    .aes-compare-table th,\n    .aes-compare-table td {\n        padding: 12px 14px;\n        font-size: 13.5px;\n        white-space: normal; \/* \u624b\u673a\u7aef\u5141\u8bb8\u6b63\u5e38\u6298\u884c *\/\n        min-width: 140px;\n    }\n    \n    .sticky-col {\n        min-width: 110px;\n        box-shadow: 4px 0 8px rgba(0,0,0,0.04); \/* \u6ed1\u52a8\u65f6\u53f3\u4fa7\u81ea\u5e26\u5fae\u9634\u5f71 *\/\n    }\n}\n<\/style>\n\n\n\n<h2 class=\"wp-block-heading\">\u73fe\u4ee3\u306e\u30c6\u30af\u30ce\u30ed\u30b8\u30fc\u306b\u304a\u3051\u308b\u4e00\u822c\u7684\u306a\u5b9f\u88c5<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">\u305d\u306e\u9244\u58c1\u306e\u4fe1\u983c\u6027\u306b\u3088\u308a\u3001AES-256\u306f\u3042\u306a\u305f\u306e\u65e5\u5e38\u7684\u306a\u30c7\u30b8\u30bf\u30eb\u6d3b\u52d5\u306e\u5e83\u7bc4\u56f2\u306b\u308f\u305f\u3063\u3066\u5f71\u3067\u9759\u304b\u306b\u52d5\u4f5c\u3057\u307e\u3059:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u4eee\u60f3\u30d7\u30e9\u30a4\u30d9\u30fc\u30c8\u30cd\u30c3\u30c8\u30ef\u30fc\u30af\uff08VPN\uff09\uff1a<\/strong> Security applications use AES-256 to create encrypted tunnels for web traffic. Whether you are using a premium enterprise solution or a trusted <strong>\u7121\u6599VPN<\/strong> \u516c\u8846Wi-Fi\u3067\u5b89\u5168\u3092\u4fdd\u3064\u306b\u306f\u3001AES-256\u304cISP\u3001\u30cf\u30c3\u30ab\u30fc\u3001\u653f\u5e9c\u6a5f\u95a2\u304c\u3042\u306a\u305f\u306e\u30c7\u30fc\u30bf\u3092\u8aad\u307f\u53d6\u308b\u306e\u3092\u9632\u304e\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30af\u30e9\u30a6\u30c9\u30b9\u30c8\u30ec\u30fc\u30b8\u30bd\u30ea\u30e5\u30fc\u30b7\u30e7\u30f3:<\/strong> \u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u306f\u3053\u308c\u3092\u5229\u7528\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u30c7\u30fc\u30bf\u3092&#8220;\u4fdd\u5b58\u4e2d&#8221;\u306b\u6697\u53f7\u5316\u3057\u3001\u7269\u7406\u7684\u306a\u30b5\u30fc\u30d0\u30fc\u30bb\u30f3\u30bf\u30fc\u306e\u4fb5\u5bb3\u304c\u767a\u751f\u3057\u305f\u5834\u5408\u3067\u3082\u30d5\u30a1\u30a4\u30eb\u304c\u5b8c\u5168\u306b\u8aad\u307f\u53d6\u308c\u306a\u3044\u3088\u3046\u306b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d1\u30b9\u30ef\u30fc\u30c9\u30de\u30cd\u30fc\u30b8\u30e3\u30fc:<\/strong> \u30dc\u30fc\u30eb\u30c8\u306fAES-256\u3092\u4f7f\u7528\u3057\u3066\u30e6\u30fc\u30b6\u30fc\u8a8d\u8a3c\u60c5\u5831\u3092\u30ed\u30c3\u30af\u3057\u307e\u3059\u3002\u5fa9\u53f7\u9375\u3092\u5c0e\u51fa\u3059\u308b\u305f\u3081\u306e\u30de\u30b9\u30bf\u30fc\u30d1\u30b9\u30ef\u30fc\u30c9\u304c\u306a\u3051\u308c\u3070\u3001\u30c7\u30fc\u30bf\u30d9\u30fc\u30b9\u306f\u653b\u6483\u8005\u306b\u3068\u3063\u3066\u7121\u4fa1\u5024\u3067\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30d5\u30eb\u30c7\u30a3\u30b9\u30af\u6697\u53f7\u5316:<\/strong> \u73fe\u4ee3\u306e\u30c7\u30b9\u30af\u30c8\u30c3\u30d7\u304a\u3088\u3073\u30e2\u30d0\u30a4\u30eb\u30aa\u30da\u30ec\u30fc\u30c6\u30a3\u30f3\u30b0\u30b7\u30b9\u30c6\u30e0\u306f\u3001\u7269\u7406\u7684\u306a\u76d7\u96e3\u304b\u3089\u30cf\u30fc\u30c9\u30c9\u30e9\u30a4\u30d6\u5168\u4f53\u3092\u4fdd\u8b77\u3059\u308b\u305f\u3081\u306b\u3001\u30cd\u30a4\u30c6\u30a3\u30d6\u3067\u305d\u308c\u3092\u5229\u7528\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u5229\u70b9 &amp; \u5236\u9650<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">\u5229\u70b9<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u30af\u30e9\u30c3\u30af\u4e0d\u80fd:<\/strong> \u305d\u308c\u306f\u9ad8\u5ea6\u306a\u6570\u5b66\u7684\u6697\u53f7\u89e3\u6790\u3084\u7dcf\u5f53\u305f\u308a\u63a8\u6e2c\u306b\u5bfe\u3057\u3066\u5f37\u56fa\u306a\u4fdd\u8b77\u3092\u63d0\u4f9b\u3057\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u6700\u9069\u5316:<\/strong> \u975e\u5e38\u306b\u52b9\u7387\u7684\u3067\u3001\u6700\u65b0\u306e\u30b3\u30f3\u30b7\u30e5\u30fc\u30de\u5411\u3051CPU\u3084\u30e2\u30d0\u30a4\u30eb\u30c1\u30c3\u30d7\u30bb\u30c3\u30c8\u4e0a\u3067\u9ad8\u901f\u306b\u52d5\u4f5c\u3059\u308b\u3088\u3046\u6700\u9069\u5316\u3055\u308c\u3066\u3044\u307e\u3059\u3002<\/li>\n\n\n\n<li><strong>\u30b0\u30ed\u30fc\u30d0\u30eb\u30b9\u30bf\u30f3\u30c0\u30fc\u30c9:<\/strong> \u4e3b\u8981\u306a\u4e16\u754c\u7684\u76e3\u67fb\u6a5f\u95a2\u306b\u3088\u3063\u3066\u8a8d\u8b58\u3055\u308c\u3001\u5be9\u67fb\u3055\u308c\u3001\u666e\u904d\u7684\u306a\u30d7\u30e9\u30c3\u30c8\u30d5\u30a9\u30fc\u30e0\u9593\u4e92\u63db\u6027\u3092\u4fdd\u8a3c\u3057\u3066\u3044\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">\u5236\u9650 &amp; \u30a8\u30af\u30b9\u30d7\u30ed\u30a4\u30c8<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>\u5b9f\u88c5\u4f9d\u5b58\u95a2\u4fc2:<\/strong> \u5b8c\u74a7\u306a\u6570\u5b66\u3067\u3082\u3001\u958b\u767a\u8005\u304c\u6697\u53f7\u5316\u30e2\u30fc\u30c9\u3084\u521d\u671f\u5316\u30d9\u30af\u30c8\u30eb\u3092\u8aa4\u3063\u3066\u8a2d\u5b9a\u3059\u308c\u3070\u3001\u30c7\u30fc\u30bf\u3092\u6551\u3046\u3053\u3068\u306f\u3067\u304d\u306a\u3044\u3002<\/li>\n\n\n\n<li><strong>\u30d2\u30e5\u30fc\u30de\u30f3\u30d5\u30a1\u30af\u30bf\u30fc\uff1a<\/strong> AES-256 cannot protect a database if an administrator uses a weak master password or falls victim to a clever social engineering exploit.<\/li>\n\n\n\n<li><strong>\u30a8\u30f3\u30c9\u30dd\u30a4\u30f3\u30c8\u30de\u30eb\u30a6\u30a7\u30a2:<\/strong> \u653b\u6483\u8005\u304c\u30ad\u30fc\u30ed\u30ac\u30fc\u3067\u30c7\u30d0\u30a4\u30b9\u306b\u611f\u67d3\u3055\u305b\u308b\u3068\u3001\u30b7\u30b9\u30c6\u30e0\u30e1\u30e2\u30ea\u304b\u3089\u76f4\u63a5\u30ad\u30fc\u3092\u76d7\u307f\u3001\u6697\u53f7\u5316\u3092\u5b8c\u5168\u306b\u56de\u907f\u3067\u304d\u307e\u3059\u3002<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">\u6280\u8853FAQ<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Q: AES-256\u306f\u3001\u51fa\u73fe\u3059\u308b\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30bf\u306b\u5bfe\u3057\u3066\u8106\u5f31\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u975e\u5bfe\u79f0\u6697\u53f7\u65b9\u5f0f\uff08RSA\u306a\u3069\uff09\u306f\u91cf\u5b50\u30b3\u30f3\u30d4\u30e5\u30fc\u30c6\u30a3\u30f3\u30b0\u306b\u3088\u3063\u3066\u5b8c\u5168\u306b\u7834\u3089\u308c\u308b\u306e\u306b\u5bfe\u3057\u3001AES-256\u306e\u3088\u3046\u306a\u5bfe\u79f0\u6697\u53f7\u306f\u9ad8\u3044\u8010\u6027\u3092\u6301\u3064\u3002\u30b0\u30ed\u30fc\u30d0\u30fc\u306e\u91cf\u5b50\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306b\u3088\u308a\u6697\u53f7\u306e\u5b9f\u52b9\u5b89\u5168\u6027\u306f\u534a\u5206\u306b\u4f4e\u4e0b\u3059\u308b\u304c\u3001AES-256\u306f128\u30d3\u30c3\u30c8\u306e\u91cf\u5b50\u8010\u6027\u3092\u4fdd\u6301\u3059\u308b\u3002\u3053\u308c\u306b\u3088\u308a\u3001\u30dd\u30b9\u30c8\u91cf\u5b50\u6642\u4ee3\u306b\u304a\u3044\u3066\u3082\u5b8c\u5168\u306b\u5b89\u5168\u3067\u5c06\u6765\u6027\u306e\u3042\u308b\u3082\u306e\u3068\u306a\u308b\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q: \u7121\u6599VPN\u306f\u672c\u7269\u306eAES-256\u6697\u53f7\u5316\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u306f\u3044\u3002AES-256\u6697\u53f7\u5316\u3092\u63d0\u4f9b\u3059\u308b\u306b\u306f\u30e9\u30a4\u30bb\u30f3\u30b9\u6599\u306f\u4e0d\u8981\u3067\u3059\u3002\u306a\u305c\u306a\u3089\u3001\u3053\u306e\u30a2\u30eb\u30b4\u30ea\u30ba\u30e0\u306f\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u3067\u3042\u308a\u3001\u6700\u65b0\u306e\u30c7\u30d0\u30a4\u30b9\u30cf\u30fc\u30c9\u30a6\u30a7\u30a2\u306b\u30cd\u30a4\u30c6\u30a3\u30d6\u5bfe\u5fdc\u3057\u3066\u3044\u308b\u304b\u3089\u3067\u3059\u3002\u4fe1\u983c\u3067\u304d\u308b\u7121\u6599VPN\u306f\u3001OpenVPN\u3084WireGuard\u306e\u3088\u3046\u306a\u30aa\u30fc\u30d7\u30f3\u30bd\u30fc\u30b9\u306e\u30c8\u30f3\u30cd\u30ea\u30f3\u30b0\u30d7\u30ed\u30c8\u30b3\u30eb\u5185\u3067AES-256\u3092\u5bb9\u6613\u306b\u5b9f\u88c5\u3057\u3001\u30b5\u30d6\u30b9\u30af\u30ea\u30d7\u30b7\u30e7\u30f3\u8cbb\u7528\u306a\u3057\u3067\u30a8\u30ea\u30fc\u30c8\u7d1a\u306e\u8ecd\u7528\u30ec\u30d9\u30eb\u306e\u30bb\u30ad\u30e5\u30ea\u30c6\u30a3\u3092\u63d0\u4f9b\u3067\u304d\u307e\u3059\u3002<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Q: \u306a\u305c\u30cf\u30c3\u30ab\u30fc\u306f\u89e3\u8aad\u4e0d\u53ef\u80fd\u3068\u8a00\u308f\u308c\u308bAES-256\u3092\u7c21\u5358\u306b\u56de\u907f\u3059\u308b\u306e\u3067\u3059\u304b\uff1f<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">\u30b5\u30a4\u30d0\u30fc\u72af\u7f6a\u8005\u306f\u3001AES-256\u306e\u4e2d\u6838\u7684\u306a\u6570\u5b66\u3092\u653b\u6483\u3059\u308b\u3053\u3068\u306f\u6642\u9593\u306e\u7121\u99c4\u3067\u3042\u308b\u305f\u3081\u3001\u3081\u3063\u305f\u306b\u3057\u307e\u305b\u3093\u3002\u4ee3\u308f\u308a\u306b\u3001\u3088\u308a\u5f31\u3044\u30d9\u30af\u30c8\u30eb\u3092\u63a2\u3057\u307e\u3059\uff1a\u30d5\u30a3\u30c3\u30b7\u30f3\u30b0\u306b\u3088\u308b\u30ad\u30fc\u30d5\u30a1\u30a4\u30eb\u306e\u7a83\u53d6\u3001\u30c7\u30fc\u30bf\u3092\u30db\u30b9\u30c8\u3057\u3066\u3044\u308b\u30b5\u30fc\u30d0\u30fc\u306e\u30d5\u30a1\u30fc\u30e0\u30a6\u30a7\u30a2\u306e\u8106\u5f31\u6027\u3092\u60aa\u7528\u3059\u308b\u3053\u3068\u3001\u307e\u305f\u306f\u30c0\u30fc\u30af\u30a6\u30a7\u30d6\u3067\u4fb5\u5bb3\u3055\u308c\u305f\u8a8d\u8a3c\u60c5\u5831\u3092\u8cfc\u5165\u3059\u308b\u3053\u3068\u3067\u3059\u3002<\/p>","protected":false},"excerpt":{"rendered":"<p>AES-256 (Advanced Encryption Standard with a 256-bit key length) is the undisputed global benchmark for symmetric data encryption. As a symmetric cipher, it uses a single, shared secret key to both encrypt plaintext into unreadable scrambled data and decrypt it back into its original form. Officially adopted by the U.S. government in 2001 following a multi-year public competition hosted by the National Institute of Standards and Technology (NIST), AES was selected to replace the aging Data Encryption Standard (DES). The winning algorithm, based on the elegant &#8220;Rijndael&#8221; cipher by Belgian cryptographers Joan Daemen and Vincent Rijmen, is now trusted worldwide by military organizations, financial institutions, and cybersecurity applications\u2014including any reliable [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":717,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_seopress_titles_title":"What Is AES-256? A Guide to Advanced Encryption Standard","_seopress_titles_desc":"Master the mechanics of AES-256 encryption. Discover how its 14-round block cipher works, explore its keyspace, and learn why it remains virtually unbreakable.","_seopress_robots_index":"","_seopress_robots_follow":"","_seopress_robots_imageindex":"","_seopress_robots_snippet":"","_seopress_robots_primary_cat":"","_seopress_robots_breadcrumbs":"","_seopress_robots_freeze_modified_date":"","_seopress_robots_custom_modified_date":"","_seopress_robots_canonical":"","_seopress_social_fb_title":"","_seopress_social_fb_desc":"","_seopress_social_fb_img":"","_seopress_social_fb_img_attachment_id":0,"_seopress_social_fb_img_width":0,"_seopress_social_fb_img_height":0,"_seopress_social_twitter_title":"","_seopress_social_twitter_desc":"","_seopress_social_twitter_img":"","_seopress_social_twitter_img_attachment_id":0,"_seopress_social_twitter_img_width":0,"_seopress_social_twitter_img_height":0,"_seopress_redirections_value":"","_seopress_redirections_enabled":"","_seopress_redirections_enabled_regex":"","_seopress_redirections_logged_status":"","_seopress_redirections_param":"","_seopress_redirections_type":0,"_seopress_analysis_target_kw":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-716","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-post"],"_links":{"self":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts\/716","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/comments?post=716"}],"version-history":[{"count":1,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts\/716\/revisions"}],"predecessor-version":[{"id":718,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/posts\/716\/revisions\/718"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/media\/717"}],"wp:attachment":[{"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/media?parent=716"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/categories?post=716"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/rufreevpn.org\/ja\/wp-json\/wp\/v2\/tags?post=716"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}