{"id":32320,"date":"2026-07-31T10:00:00","date_gmt":"2026-07-31T02:00:00","guid":{"rendered":"https:\/\/cn.hostease.com\/blog\/?p=32320"},"modified":"2026-08-04T09:27:06","modified_gmt":"2026-08-04T01:27:06","slug":"ssh-certificate-auth","status":"publish","type":"post","link":"https:\/\/cn.hostease.com\/blog\/guides\/ssh-certificate-auth\/","title":{"rendered":"SSH \u8bc1\u4e66\u8ba4\u8bc1\u914d\u7f6e\u6307\u5357\uff1a\u96c6\u4e2d\u7b7e\u53d1\u767b\u5f55\u6743\u9650"},"content":{"rendered":"<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/ssh-certificate-auth-cover.webp\" alt=\"SSH \u8bc1\u4e66\u8ba4\u8bc1\u96c6\u4e2d\u7ba1\u7406\u793a\u610f\u56fe\" loading=\"lazy\" \/><\/p>\n<p>SSH \u8bc1\u4e66\u8ba4\u8bc1\u4e0d\u662f\u628a\u6bcf\u53f0 Linux \u670d\u52a1\u5668\u4e0a\u7684 <code>authorized_keys<\/code> \u6362\u4e00\u79cd\u5199\u6cd5\uff0c\u800c\u662f\u7528\u4e00\u5957\u53ef\u5ba1\u8ba1\u7684\u7b7e\u53d1\u6d41\u7a0b\uff0c\u89e3\u51b3\u591a\u53f0\u670d\u52a1\u5668\u957f\u671f\u516c\u94a5\u96be\u56de\u6536\u3001\u6743\u9650\u8fb9\u754c\u96be\u7edf\u4e00\u7684\u95ee\u9898\u3002\u672c\u6587\u4f1a\u6559\u4f60\u5982\u4f55\u4ece 1 \u4e2a\u8ba4\u8bc1\u4e2d\u5fc3\u5bc6\u94a5\u5f00\u59cb\uff0c\u5b8c\u6210\u7528\u6237\u8bc1\u4e66\u7b7e\u53d1\u3001\u670d\u52a1\u5668\u7aef\u4fe1\u4efb\u914d\u7f6e\u3001\u6709\u6548\u671f\u63a7\u5236\u548c\u64a4\u9500\u9a8c\u8bc1\uff0c\u9002\u5408\u5df2\u7ecf\u7528 SSH\uff08Secure Shell\uff0c\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u7ba1\u7406 5 \u53f0\u4ee5\u4e0a\u670d\u52a1\u5668\u7684\u56e2\u961f\u53c2\u8003\u3002<\/p>\n<p>\u5982\u679c\u4f60\u7684\u4e1a\u52a1\u8fd0\u884c\u5728 <a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668<\/a>\u3001<a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09<\/a> \u6216\u6df7\u5408\u73af\u5883\u4e2d\uff0c\u767b\u5f55\u6743\u9650\u5f80\u5f80\u4f1a\u968f\u7740\u6210\u5458\u3001\u9879\u76ee\u548c\u4e34\u65f6\u6392\u969c\u4e0d\u65ad\u53d8\u5316\u3002\u4f20\u7edf\u516c\u94a5\u65b9\u5f0f\u53ef\u4ee5\u5de5\u4f5c\uff0c\u4f46\u5f53\u673a\u5668\u6570\u91cf\u4ece 3 \u53f0\u589e\u957f\u5230 30 \u53f0\u540e\uff0c\u771f\u6b63\u9ebb\u70e6\u7684\u4e0d\u662f\u201c\u80fd\u4e0d\u80fd\u767b\u5f55\u201d\uff0c\u800c\u662f\u201c\u8c01\u5728\u4ec0\u4e48\u65f6\u5019\u8fd8\u80fd\u767b\u5f55\u201d\u3002<\/p>\n<h2>\u4e3a\u4ec0\u4e48\u957f\u671f\u516c\u94a5\u4f1a\u53d8\u6210\u7ba1\u7406\u8d1f\u62c5<\/h2>\n<p>\u957f\u671f\u516c\u94a5\u7684\u4f18\u70b9\u662f\u7b80\u5355\uff1a\u751f\u6210\u4e00\u5bf9\u5bc6\u94a5\uff0c\u628a\u516c\u94a5\u5199\u8fdb\u76ee\u6807\u7528\u6237\u7684 <code>~\/.ssh\/authorized_keys<\/code>\uff0c\u5ba2\u6237\u7aef\u62ff\u79c1\u94a5\u767b\u5f55\u5373\u53ef\u3002\u5c0f\u56e2\u961f\u65e9\u671f\u901a\u5e38\u90fd\u8fd9\u6837\u505a\uff0c\u56e0\u4e3a\u5b83\u4e0d\u4f9d\u8d56\u989d\u5916\u670d\u52a1\uff0c\u4e5f\u4e0d\u9700\u8981\u6539\u53d8\u73b0\u6709\u8fd0\u7ef4\u4e60\u60ef\u3002<\/p>\n<p>\u95ee\u9898\u4f1a\u5728\u89c4\u6a21\u6269\u5927\u540e\u51fa\u73b0\u3002\u5047\u8bbe 8 \u540d\u6210\u5458\u5404\u6709 2 \u628a\u529e\u516c\u8bbe\u5907\u5bc6\u94a5\uff0c\u9700\u8981\u8bbf\u95ee 20 \u53f0 Linux \u670d\u52a1\u5668\uff1b\u5982\u679c\u6bcf\u53f0\u670d\u52a1\u5668\u90fd\u7ef4\u62a4\u4e00\u4efd\u516c\u94a5\u6587\u4ef6\uff0c\u7406\u8bba\u4e0a\u4f1a\u4ea7\u751f 320 \u4e2a\u6388\u6743\u6761\u76ee\u3002\u53ea\u8981\u5176\u4e2d 1 \u540d\u6210\u5458\u79bb\u804c\u30011 \u53f0\u7535\u8111\u9057\u5931\uff0c\u6216\u8005\u67d0\u4e2a\u9879\u76ee\u4e34\u65f6\u6388\u6743\u5fd8\u8bb0\u56de\u6536\uff0c\u7ba1\u7406\u5458\u5c31\u8981\u9010\u53f0\u786e\u8ba4\u6761\u76ee\u662f\u5426\u6e05\u7406\u5e72\u51c0\u3002<\/p>\n<p>SSH \u8bc1\u4e66\u8ba4\u8bc1\u7684\u601d\u8def\u4e0d\u540c\uff1a\u670d\u52a1\u5668\u4e0d\u518d\u9010\u4e2a\u4fe1\u4efb\u7528\u6237\u516c\u94a5\uff0c\u800c\u662f\u4fe1\u4efb\u4e00\u4e2a\u7528\u6237 CA\uff08Certificate Authority\uff0c\u8bc1\u4e66\u7b7e\u53d1\u673a\u6784\uff09\u516c\u94a5\u3002\u7ba1\u7406\u5458\u7528 CA \u79c1\u94a5\u7ed9\u7528\u6237\u516c\u94a5\u7b7e\u53d1\u77ed\u671f\u8bc1\u4e66\uff0c\u8bc1\u4e66\u91cc\u5199\u660e\u7528\u6237\u540d\u3001\u53ef\u767b\u5f55\u8eab\u4efd\u3001\u6709\u6548\u671f\u548c\u53ef\u9009\u9650\u5236\u3002\u670d\u52a1\u5668\u53ea\u8981\u8ba4\u53ef\u8fd9\u4e2a CA\uff0c\u5c31\u80fd\u9a8c\u8bc1\u8bc1\u4e66\u662f\u5426\u7531\u53ef\u4fe1\u6765\u6e90\u7b7e\u53d1\u3002<\/p>\n<p>\u8fd9\u5e26\u6765 3 \u4e2a\u76f4\u63a5\u53d8\u5316\u3002\u7b2c\u4e00\uff0c\u670d\u52a1\u5668\u4fa7\u914d\u7f6e\u4ece\u201c\u7ef4\u62a4\u5f88\u591a\u7528\u6237\u516c\u94a5\u201d\u53d8\u6210\u201c\u7ef4\u62a4 1 \u4e2a CA \u516c\u94a5\u201d\u3002\u7b2c\u4e8c\uff0c\u6743\u9650\u6709\u6548\u671f\u53ef\u4ee5\u4ece\u9ed8\u8ba4\u6c38\u4e45\u6539\u6210 8 \u5c0f\u65f6\u300124 \u5c0f\u65f6\u6216 7 \u5929\u3002\u7b2c\u4e09\uff0c\u767b\u5f55\u884c\u4e3a\u53ef\u4ee5\u901a\u8fc7\u8bc1\u4e66\u5e8f\u5217\u53f7\u3001Key ID \u548c\u7b7e\u53d1\u8bb0\u5f55\u8ffd\u8e2a\uff0c\u6392\u67e5\u65f6\u66f4\u5bb9\u6613\u77e5\u9053\u67d0\u6b21\u767b\u5f55\u6765\u81ea\u54ea\u6b21\u6388\u6743\u3002<\/p>\n<p>\u5728 <a href=\"https:\/\/cn.hostease.com\/blog\/guides\/ttfb-hosting-optimization\/\">\u7f51\u7ad9\u6027\u80fd\u4f18\u5316<\/a> \u6216\u6545\u969c\u54cd\u5e94\u573a\u666f\u4e2d\uff0c\u8fd0\u7ef4\u4eba\u5458\u5e38\u5e38\u9700\u8981\u4e34\u65f6\u767b\u5f55\u591a\u53f0\u670d\u52a1\u5668\u67e5\u770b\u65e5\u5fd7\u3002\u8bc1\u4e66\u8ba4\u8bc1\u53ef\u4ee5\u628a\u8fd9\u79cd\u4e34\u65f6\u6743\u9650\u9650\u5b9a\u5728\u4e00\u4e2a\u660e\u786e\u7a97\u53e3\u5185\uff0c\u907f\u514d\u6392\u969c\u7ed3\u675f\u540e\u957f\u671f\u6743\u9650\u4ecd\u7559\u5728\u670d\u52a1\u5668\u4e0a\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/ssh-certificate-auth-key-sprawl.webp\" alt=\"\u957f\u671f\u516c\u94a5\u4e0e\u77ed\u671f\u8bc1\u4e66\u6743\u9650\u5dee\u5f02\" loading=\"lazy\" \/><\/p>\n<h2>\u51c6\u5907\u4e00\u5957\u6700\u5c0f\u53ef\u7528\u7684 SSH \u8bc1\u4e66\u4f53\u7cfb<\/h2>\n<p>\u6b63\u5f0f\u914d\u7f6e\u524d\uff0c\u5148\u628a\u89d2\u8272\u5206\u6e05\u695a\uff1aCA \u79c1\u94a5\u53ea\u7528\u4e8e\u7b7e\u53d1\u8bc1\u4e66\uff0c\u4e0d\u5e94\u8be5\u653e\u5728\u6240\u6709\u670d\u52a1\u5668\u4e0a\uff1b\u7528\u6237\u516c\u94a5\u6765\u81ea\u4e2a\u4eba\u7535\u8111\u6216\u8df3\u677f\u673a\uff1b\u670d\u52a1\u5668\u53ea\u4fdd\u5b58 CA \u516c\u94a5\u548c SSH\uff08Secure Shell\uff0c\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u670d\u52a1\u914d\u7f6e\u3002\u8fd9\u6837\u8bbe\u8ba1\u7684\u76ee\u6807\u662f\u964d\u4f4e CA \u79c1\u94a5\u66b4\u9732\u9762\uff0c\u800c\u4e0d\u662f\u8ba9\u6bcf\u53f0\u673a\u5668\u90fd\u5177\u5907\u7b7e\u53d1\u80fd\u529b\u3002<\/p>\n<p>\u4e0b\u9762\u793a\u4f8b\u4f7f\u7528 OpenSSH \u81ea\u5e26\u547d\u4ee4\u5b8c\u6210\uff0c\u4e0d\u4f9d\u8d56\u989d\u5916\u5546\u4e1a\u7ec4\u4ef6\u3002\u5efa\u8bae\u5728\u4e00\u53f0\u53d7\u63a7\u7684\u7ba1\u7406\u673a\u4e0a\u521b\u5efa CA \u5bc6\u94a5\uff0c\u5e76\u628a\u8be5\u76ee\u5f55\u6743\u9650\u9650\u5236\u4e3a <code>700<\/code>\u3002\u5982\u679c\u56e2\u961f\u5df2\u6709\u5bc6\u7801\u5e93\u6216\u786c\u4ef6\u5b89\u5168\u6a21\u5757\uff0c\u53ef\u4ee5\u628a CA \u79c1\u94a5\u6258\u7ba1\u5728\u66f4\u4e25\u683c\u7684\u4f4d\u7f6e\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\nmkdir -p \/opt\/ssh-ca\/user-ca\nchmod 700 \/opt\/ssh-ca\/user-ca\nssh-keygen -t ed25519 -f \/opt\/ssh-ca\/user-ca\/ca_user -C \"user-ca-2026\"\nssh-keygen -l -f \/opt\/ssh-ca\/user-ca\/ca_user.pub\n<\/pre>\n<p>\u751f\u6210\u540e\u4f1a\u5f97\u5230 <code>ca_user<\/code> \u548c <code>ca_user.pub<\/code> \u4e24\u4e2a\u6587\u4ef6\u3002<code>ca_user<\/code> \u662f\u79c1\u94a5\uff0c\u53ea\u80fd\u7531\u6388\u6743\u4eba\u5458\u6216\u7b7e\u53d1\u6d41\u6c34\u7ebf\u4f7f\u7528\uff1b<code>ca_user.pub<\/code> \u662f\u8981\u5206\u53d1\u5230\u5404\u53f0\u670d\u52a1\u5668\u7684\u4fe1\u4efb\u951a\u3002\u6211\u4eec\u5efa\u8bae\u81f3\u5c11\u8bb0\u5f55 3 \u9879\u4fe1\u606f\uff1aCA \u516c\u94a5\u6307\u7eb9\u3001\u521b\u5efa\u65e5\u671f\u3001\u4fdd\u7ba1\u8d23\u4efb\u4eba\u3002\u8fd9\u6837\u534a\u5e74\u540e\u8f6e\u6362 CA \u65f6\uff0c\u4e0d\u4f1a\u51fa\u73b0\u201c\u670d\u52a1\u5668\u4e0a\u8fd9\u628a CA \u662f\u8c01\u5efa\u7684\u201d\u7684\u76f2\u533a\u3002<\/p>\n<p>\u63a5\u4e0b\u6765\u628a CA \u516c\u94a5\u590d\u5236\u5230\u76ee\u6807\u670d\u52a1\u5668\uff0c\u4f8b\u5982 <code>\/etc\/ssh\/ca_user.pub<\/code>\u3002\u7136\u540e\u5728 <code>sshd_config<\/code> \u4e2d\u58f0\u660e\u53ef\u4fe1\u7528\u6237 CA\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\nsudo install -m 0644 ca_user.pub \/etc\/ssh\/ca_user.pub\nsudo sh -c 'echo \"TrustedUserCAKeys \/etc\/ssh\/ca_user.pub\" >> \/etc\/ssh\/sshd_config'\nsudo sshd -t\nsudo systemctl reload sshd\n<\/pre>\n<p>\u8fd9\u91cc\u7684 <code>sshd -t<\/code> \u5f88\u5173\u952e\uff0c\u5b83\u4f1a\u5728\u91cd\u8f7d\u524d\u68c0\u67e5\u914d\u7f6e\u8bed\u6cd5\u3002\u5bf9\u4e8e\u627f\u8f7d <a href=\"https:\/\/cn.hostease.com\/blog\/wordpress\/\">WordPress<\/a> \u7ad9\u70b9\u6216\u4e1a\u52a1\u540e\u53f0\u7684\u670d\u52a1\u5668\uff0c\u4e0d\u5efa\u8bae\u76f4\u63a5\u91cd\u542f SSH\uff08Secure Shell\uff0c\u5b89\u5168\u8fdc\u7a0b\u767b\u5f55\u534f\u8bae\uff09\u670d\u52a1\uff1b\u5148\u4fdd\u7559\u4e00\u4e2a\u5df2\u767b\u5f55\u7684\u7ba1\u7406\u4f1a\u8bdd\uff0c\u518d\u5f00\u65b0\u7ec8\u7aef\u6d4b\u8bd5\u8bc1\u4e66\u767b\u5f55\uff0c\u786e\u8ba4\u65e0\u8bef\u540e\u518d\u5173\u95ed\u65e7\u4f1a\u8bdd\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/ssh-certificate-auth-ca-structure.webp\" alt=\"SSH \u7528\u6237 CA \u4fe1\u4efb\u94fe\u7ed3\u6784\" loading=\"lazy\" \/><\/p>\n<h2>\u7b7e\u53d1\u7528\u6237\u8bc1\u4e66\uff1a\u628a\u6743\u9650\u5199\u8fdb\u8bc1\u4e66\u800c\u4e0d\u662f\u670d\u52a1\u5668<\/h2>\n<p>\u670d\u52a1\u5668\u5df2\u7ecf\u4fe1\u4efb CA \u540e\uff0c\u5c31\u53ef\u4ee5\u4e3a\u7528\u6237\u516c\u94a5\u7b7e\u53d1\u8bc1\u4e66\u3002\u5047\u8bbe\u5f00\u53d1\u8005 Alice \u7684\u516c\u94a5\u4e3a <code>alice_ed25519.pub<\/code>\uff0c\u5979\u9700\u8981\u4ee5 <code>deploy<\/code> \u8eab\u4efd\u767b\u5f55\u5e94\u7528\u670d\u52a1\u5668 8 \u5c0f\u65f6\uff0c\u53ef\u4ee5\u8fd9\u6837\u7b7e\u53d1\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\nssh-keygen -s \/opt\/ssh-ca\/user-ca\/ca_user   -I \"alice-web-prod-20260731\"   -n deploy   -V +8h   -z 2026073101   alice_ed25519.pub\n<\/pre>\n<p>\u547d\u4ee4\u4e2d\u7684\u53c2\u6570\u4e0d\u8981\u968f\u4fbf\u7701\u7565\u3002<code>-I<\/code> \u662f Key ID\uff0c\u5efa\u8bae\u5199\u6210\u4eba\u5458\u3001\u7528\u9014\u3001\u73af\u5883\u548c\u65e5\u671f\uff1b<code>-n<\/code> \u6307\u5b9a\u5141\u8bb8\u767b\u5f55\u7684 principal\uff08\u53ef\u7406\u89e3\u4e3a\u8bc1\u4e66\u91cc\u58f0\u660e\u7684\u767b\u5f55\u8eab\u4efd\uff09\uff1b<code>-V +8h<\/code> \u8868\u793a\u4ece\u5f53\u524d\u65f6\u95f4\u8d77 8 \u5c0f\u65f6\u5185\u6709\u6548\uff1b<code>-z<\/code> \u662f\u5e8f\u5217\u53f7\uff0c\u65b9\u4fbf\u4e4b\u540e\u64a4\u9500\u6216\u5ba1\u8ba1\u3002\u547d\u4ee4\u6267\u884c\u540e\u4f1a\u751f\u6210 <code>alice_ed25519-cert.pub<\/code>\uff0c\u7528\u6237\u767b\u5f55\u65f6\u79c1\u94a5\u548c\u8bc1\u4e66\u9700\u8981\u653e\u5728\u540c\u4e00\u76ee\u5f55\u3002<\/p>\n<p>\u5ba2\u6237\u7aef\u53ef\u4ee5\u663e\u5f0f\u6307\u5b9a\u8bc1\u4e66\uff0c\u4e5f\u53ef\u4ee5\u8ba9 OpenSSH \u81ea\u52a8\u5339\u914d\u540c\u540d <code>-cert.pub<\/code> \u6587\u4ef6\u3002\u6d4b\u8bd5\u547d\u4ee4\u5982\u4e0b\uff1a<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\nssh -i ~\/.ssh\/alice_ed25519   -o CertificateFile=~\/.ssh\/alice_ed25519-cert.pub   deploy@server.example.com\n<\/pre>\n<p>\u5982\u679c\u767b\u5f55\u5931\u8d25\uff0c\u4f18\u5148\u770b 4 \u4e2a\u4f4d\u7f6e\uff1a\u672c\u5730\u8bc1\u4e66\u662f\u5426\u8fc7\u671f\u3001\u8bc1\u4e66 principal \u662f\u5426\u5305\u542b\u76ee\u6807\u7528\u6237\u3001\u670d\u52a1\u5668 <code>TrustedUserCAKeys<\/code> \u8def\u5f84\u662f\u5426\u6b63\u786e\u3001<code>\/var\/log\/auth.log<\/code> \u6216\u7cfb\u7edf\u8ba4\u8bc1\u65e5\u5fd7\u662f\u5426\u63d0\u793a CA \u4e0d\u53ef\u4fe1\u3002\u4e0d\u8981\u4e00\u5931\u8d25\u5c31\u628a\u7528\u6237\u516c\u94a5\u91cd\u65b0\u585e\u56de <code>authorized_keys<\/code>\uff0c\u5426\u5219\u4f1a\u7ed5\u5f00\u8bc1\u4e66\u6709\u6548\u671f\u548c\u5ba1\u8ba1\u94fe\u8def\u3002<\/p>\n<p>\u4e3a\u4e86\u907f\u514d\u6743\u9650\u8fc7\u5bbd\uff0c\u7b7e\u53d1\u65f6\u53ef\u4ee5\u628a\u4e0d\u540c\u573a\u666f\u62c6\u6210\u4e0d\u540c\u8bc1\u4e66\u3002\u4f8b\u5982\u65e5\u5e38\u90e8\u7f72\u8bc1\u4e66\u6709\u6548\u671f 8 \u5c0f\u65f6\uff0c\u53ea\u5141\u8bb8 <code>deploy<\/code>\uff1b\u7d27\u6025\u6392\u969c\u8bc1\u4e66\u6709\u6548\u671f 2 \u5c0f\u65f6\uff0c\u53ea\u53d1\u7ed9\u503c\u73ed\u4eba\u5458\uff1b\u6279\u91cf\u7ef4\u62a4\u8bc1\u4e66\u6709\u6548\u671f 24 \u5c0f\u65f6\uff0c\u4f46\u53ea\u7528\u4e8e\u5185\u7f51\u8df3\u677f\u673a\u3002\u8fd9\u6837\u5373\u4f7f\u540c\u4e00\u4e2a\u4eba\u53c2\u4e0e\u591a\u4e2a\u9879\u76ee\uff0c\u4e5f\u4e0d\u9700\u8981\u5728\u670d\u52a1\u5668\u4e0a\u957f\u671f\u5806\u79ef\u591a\u4efd\u516c\u94a5\u3002<\/p>\n<h2>\u628a\u8bc1\u4e66\u8ba4\u8bc1\u63a5\u5165\u65e5\u5e38\u8fd0\u7ef4\u6d41\u7a0b<\/h2>\n<p>\u6280\u672f\u547d\u4ee4\u80fd\u8dd1\u901a\u53ea\u662f\u7b2c\u4e00\u6b65\u3002\u771f\u6b63\u843d\u5730\u65f6\uff0c\u56e2\u961f\u9700\u8981\u628a\u201c\u8c01\u80fd\u7b7e\u53d1\u3001\u7b7e\u53d1\u7ed9\u8c01\u3001\u591a\u4e45\u8fc7\u671f\u3001\u5982\u4f55\u7559\u75d5\u201d\u5199\u8fdb\u6d41\u7a0b\u3002\u4e00\u4e2a\u53ef\u6267\u884c\u7684\u6700\u5c0f\u6d41\u7a0b\u53ef\u4ee5\u5305\u542b\u4ee5\u4e0b 4 \u4e2a\u8282\u70b9\uff1a\u7533\u8bf7\u4eba\u63d0\u4ea4\u76ee\u6807\u670d\u52a1\u5668\u3001\u767b\u5f55\u8eab\u4efd\u548c\u65f6\u957f\uff1b\u8d1f\u8d23\u4eba\u5ba1\u6279\uff1b\u7b7e\u53d1\u811a\u672c\u751f\u6210\u8bc1\u4e66\u5e76\u8bb0\u5f55\u5e8f\u5217\u53f7\uff1b\u8bc1\u4e66\u8fc7\u671f\u540e\u4e0d\u518d\u7eed\u53d1\uff0c\u9664\u975e\u91cd\u65b0\u7533\u8bf7\u3002<\/p>\n<p>\u7b7e\u53d1\u8bb0\u5f55\u5efa\u8bae\u81f3\u5c11\u4fdd\u5b58\u8fd9\u4e9b\u5b57\u6bb5\uff1a<code>serial<\/code>\u3001<code>key_id<\/code>\u3001\u7533\u8bf7\u4eba\u3001\u5ba1\u6279\u4eba\u3001principal\u3001\u6709\u6548\u671f\u5f00\u59cb\u65f6\u95f4\u3001\u6709\u6548\u671f\u7ed3\u675f\u65f6\u95f4\u3001\u76ee\u6807\u73af\u5883\u3002\u5b57\u6bb5\u4e0d\u5fc5\u590d\u6742\uff0c\u4f46\u8981\u80fd\u56de\u7b54\u4e24\u4e2a\u95ee\u9898\uff1a\u67d0\u4e2a\u6210\u5458\u5728\u67d0\u5929\u4e3a\u4ec0\u4e48\u6709\u6743\u9650\uff0c\u4ee5\u53ca\u67d0\u4e2a\u5e8f\u5217\u53f7\u5bf9\u5e94\u54ea\u6b21\u6388\u6743\u3002<\/p>\n<p>\u5bf9\u4e8e\u6b63\u5728\u4f7f\u7528 <a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u914d\u7f6e<\/a> \u7ba1\u7406\u4e1a\u52a1\u7684\u56e2\u961f\uff0c\u53ef\u4ee5\u5148\u4ece\u975e\u751f\u4ea7\u73af\u5883\u8bd5\u70b9\u3002\u9009 2 \u53f0\u6d4b\u8bd5\u670d\u52a1\u5668\u30012 \u4e2a\u767b\u5f55\u8eab\u4efd\u548c 1 \u4e2a\u77ed\u6709\u6548\u671f\u7b56\u7565\uff0c\u8dd1\u901a\u521b\u5efa CA\u3001\u914d\u7f6e sshd\u3001\u7b7e\u53d1\u8bc1\u4e66\u3001\u767b\u5f55\u9a8c\u8bc1\u3001\u8fc7\u671f\u9a8c\u8bc1\u8fd9 5 \u4e2a\u52a8\u4f5c\u3002\u786e\u8ba4\u6d41\u7a0b\u7a33\u5b9a\u540e\uff0c\u518d\u628a\u751f\u4ea7\u670d\u52a1\u5668\u5206\u6279\u52a0\u5165\u3002<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cn.hostease.com\/blog\/wp-content\/uploads\/2026\/08\/ssh-certificate-auth-issue-flow.webp\" alt=\"\u8bc1\u4e66\u7b7e\u53d1\u4e0e\u767b\u5f55\u9a8c\u8bc1\u6d41\u7a0b\" loading=\"lazy\" \/><\/p>\n<h2>\u64a4\u9500\u3001\u8f6e\u6362\u4e0e\u6545\u969c\u56de\u9000\u8981\u63d0\u524d\u8bbe\u8ba1<\/h2>\n<p>\u77ed\u6709\u6548\u671f\u80fd\u51cf\u5c11\u5f88\u591a\u98ce\u9669\uff0c\u4f46\u5b83\u4e0d\u80fd\u66ff\u4ee3\u64a4\u9500\u673a\u5236\u3002\u6bd4\u5982\u4e00\u53f0\u529e\u516c\u7535\u8111\u9057\u5931\uff0c\u8bc1\u4e66\u8fd8\u5269 6 \u5c0f\u65f6\u6709\u6548\u671f\uff1b\u6216\u8005\u67d0\u4e2a\u5e8f\u5217\u53f7\u7b7e\u53d1\u9519\u8bef\uff0c\u9700\u8981\u7acb\u5373\u5931\u6548\u3002\u8fd9\u65f6\u53ef\u4ee5\u4f7f\u7528 OpenSSH \u7684 Key Revocation List\uff08\u5bc6\u94a5\u64a4\u9500\u5217\u8868\uff09\u673a\u5236\uff0c\u628a\u6307\u5b9a\u8bc1\u4e66\u6216\u516c\u94a5\u52a0\u5165\u64a4\u9500\u6587\u4ef6\uff0c\u5e76\u8ba9 sshd \u8bfb\u53d6\u5b83\u3002<\/p>\n<pre class=\"EnlighterJSRAW\" data-enlighter-language=\"bash\" data-enlighter-linenumbers=\"false\">\nssh-keygen -k -f revoked_user_certs.krl -z 2026073101 alice_ed25519-cert.pub\nsudo install -m 0644 revoked_user_certs.krl \/etc\/ssh\/revoked_user_certs.krl\nsudo sh -c 'echo \"RevokedKeys \/etc\/ssh\/revoked_user_certs.krl\" >> \/etc\/ssh\/sshd_config'\nsudo sshd -t\nsudo systemctl reload sshd\n<\/pre>\n<p>\u64a4\u9500\u5217\u8868\u4e5f\u9700\u8981\u7ef4\u62a4\u6d41\u7a0b\u3002\u6bcf\u6b21\u65b0\u589e\u64a4\u9500\u9879\u540e\uff0c\u81f3\u5c11\u5728 1 \u53f0\u6d4b\u8bd5\u670d\u52a1\u5668\u4e0a\u9a8c\u8bc1\u88ab\u64a4\u9500\u8bc1\u4e66\u65e0\u6cd5\u767b\u5f55\uff0c\u518d\u540c\u6b65\u5230\u751f\u4ea7\u670d\u52a1\u5668\u3002\u82e5\u4f60\u7528\u914d\u7f6e\u7ba1\u7406\u5de5\u5177\u5206\u53d1 <code>\/etc\/ssh\/sshd_config<\/code>\uff0c\u5e94\u628a <code>TrustedUserCAKeys<\/code> \u548c <code>RevokedKeys<\/code> \u90fd\u7eb3\u5165\u540c\u4e00\u5957\u53d8\u66f4\u8bb0\u5f55\uff0c\u907f\u514d\u67d0\u4e9b\u673a\u5668\u4fe1\u4efb CA \u5374\u6ca1\u6709\u52a0\u8f7d\u64a4\u9500\u6587\u4ef6\u3002<\/p>\n<p>CA \u8f6e\u6362\u5efa\u8bae\u6309\u5b63\u5ea6\u6216\u534a\u5e74\u89c4\u5212\uff0c\u800c\u4e0d\u662f\u7b49\u79c1\u94a5\u6cc4\u9732\u540e\u518d\u5904\u7406\u3002\u5e38\u89c1\u505a\u6cd5\u662f\u5148\u751f\u6210\u65b0 CA\uff0c\u628a\u65b0\u65e7\u4e24\u4e2a CA \u516c\u94a5\u540c\u65f6\u5199\u5165\u670d\u52a1\u5668\u4fe1\u4efb\u6587\u4ef6\uff1b\u89c2\u5bdf 1 \u5230 2 \u5468\u540e\u505c\u6b62\u65e7 CA \u7b7e\u53d1\uff1b\u518d\u7b49\u5f85\u65e7\u8bc1\u4e66\u5168\u90e8\u8fc7\u671f\uff1b\u6700\u540e\u4ece\u670d\u52a1\u5668\u79fb\u9664\u65e7 CA \u516c\u94a5\u3002\u8fd9\u4e2a\u8fc7\u7a0b\u867d\u7136\u591a\u4e00\u6b65\uff0c\u4f46\u80fd\u907f\u514d\u5207\u6362\u5f53\u5929\u6240\u6709\u4eba\u540c\u65f6\u65e0\u6cd5\u767b\u5f55\u3002<\/p>\n<p>\u6545\u969c\u56de\u9000\u4e5f\u8981\u63d0\u524d\u51c6\u5907\u3002\u6211\u4eec\u5efa\u8bae\u4fdd\u7559 1 \u4e2a\u53d7\u63a7\u7684\u7d27\u6025\u7ba1\u7406\u8d26\u6237\uff0c\u53ea\u5141\u8bb8\u5c11\u6570\u8d1f\u8d23\u4eba\u4f7f\u7528\uff0c\u5e76\u914d\u5408\u5f3a\u53e3\u4ee4\u3001\u6765\u6e90 IP \u9650\u5236\u6216\u591a\u56e0\u7d20\u8ba4\u8bc1\u3002\u5b83\u4e0d\u662f\u65e5\u5e38\u767b\u5f55\u5165\u53e3\uff0c\u800c\u662f CA \u914d\u7f6e\u9519\u8bef\u3001\u8bc1\u4e66\u7b7e\u53d1\u7cfb\u7edf\u4e0d\u53ef\u7528\u65f6\u7684\u6062\u590d\u901a\u9053\u3002\u5bf9\u4e8e\u8fd0\u884c\u5173\u952e\u4e1a\u52a1\u7684 <a href=\"https:\/\/cn.hostease.com\/dedicated-server\/\">\u72ec\u7acb\u670d\u52a1\u5668\uff08\u4e13\u7528\u7269\u7406\u670d\u52a1\u5668\uff09<\/a>\uff0c\u56de\u9000\u8d26\u6237\u548c\u5e26\u5916\u63a7\u5236\u53f0\u540c\u6837\u91cd\u8981\u3002<\/p>\n<h2>\u4ec0\u4e48\u65f6\u5019\u4e0d\u9002\u5408\u9a6c\u4e0a\u5207\u5230\u8bc1\u4e66\u8ba4\u8bc1<\/h2>\n<p>SSH \u8bc1\u4e66\u8ba4\u8bc1\u9002\u5408\u670d\u52a1\u5668\u6570\u91cf\u3001\u4eba\u5458\u53d8\u5316\u548c\u5ba1\u8ba1\u8981\u6c42\u90fd\u5728\u4e0a\u5347\u7684\u56e2\u961f\uff0c\u4f46\u5e76\u4e0d\u662f\u6240\u6709\u73af\u5883\u90fd\u5e94\u8be5\u7acb\u523b\u5207\u6362\u3002\u82e5\u56e2\u961f\u53ea\u6709 1 \u5230 2 \u53f0\u673a\u5668\u3001\u6210\u5458\u56fa\u5b9a\u3001\u6ca1\u6709\u4e34\u65f6\u6388\u6743\u9700\u6c42\uff0c\u7b80\u5355\u516c\u94a5\u52a0\u5b9a\u671f\u5de1\u68c0\u53ef\u80fd\u5df2\u7ecf\u8db3\u591f\u3002\u590d\u6742\u65b9\u6848\u672c\u8eab\u4e5f\u4f1a\u5e26\u6765\u7ef4\u62a4\u6210\u672c\uff0c\u4f8b\u5982 CA \u79c1\u94a5\u4fdd\u7ba1\u3001\u7b7e\u53d1\u811a\u672c\u53ef\u7528\u6027\u3001\u64a4\u9500\u5217\u8868\u540c\u6b65\u548c\u6d41\u7a0b\u57f9\u8bad\u3002<\/p>\n<p>\u66f4\u7a33\u59a5\u7684\u5224\u65ad\u6807\u51c6\u662f\u770b 3 \u4e2a\u6307\u6807\uff1a\u670d\u52a1\u5668\u6570\u91cf\u662f\u5426\u8d85\u8fc7 5 \u53f0\uff1b\u6bcf\u6708\u6743\u9650\u53d8\u66f4\u662f\u5426\u8d85\u8fc7 5 \u6b21\uff1b\u662f\u5426\u9700\u8981\u56de\u7b54\u201c\u67d0\u6b21\u767b\u5f55\u5bf9\u5e94\u54ea\u6b21\u6388\u6743\u201d\u3002\u5982\u679c 3 \u9879\u91cc\u547d\u4e2d 2 \u9879\uff0c\u5c31\u503c\u5f97\u505a\u8bd5\u70b9\u3002\u5982\u679c\u53ea\u547d\u4e2d 1 \u9879\uff0c\u53ef\u4ee5\u5148\u628a <code>authorized_keys<\/code> \u7ba1\u7406\u89c4\u8303\u5316\uff0c\u4f8b\u5982\u7edf\u4e00\u6ce8\u91ca\u683c\u5f0f\u3001\u6bcf\u6708\u6e05\u7406\u79bb\u804c\u4eba\u5458\u5bc6\u94a5\u3001\u7981\u6b62\u591a\u4eba\u5171\u7528\u540c\u4e00\u628a\u79c1\u94a5\u3002<\/p>\n<p>\u5bf9\u4e2d\u5c0f\u4f01\u4e1a\u7f51\u7ad9\u6765\u8bf4\uff0c\u6743\u9650\u4f53\u7cfb\u7684\u76ee\u6807\u4e0d\u662f\u8ffd\u6c42\u590d\u6742\uff0c\u800c\u662f\u964d\u4f4e\u8bef\u64cd\u4f5c\u548c\u9057\u7559\u6743\u9650\u5e26\u6765\u7684\u98ce\u9669\u3002Hostease \u5728\u4e3b\u673a\u4e0e\u670d\u52a1\u5668\u670d\u52a1\u4e2d\u66f4\u5173\u6ce8\u7a33\u5b9a\u6027\u548c\u652f\u6301\u4f53\u9a8c\uff1b\u4ece\u7528\u6237\u4fa7\u770b\uff0c\u9009\u62e9\u5408\u9002\u7684\u57fa\u7840\u8bbe\u65bd\u540e\uff0c\u4ecd\u7136\u9700\u8981\u628a\u767b\u5f55\u6743\u9650\u3001\u5907\u4efd\u548c\u76d1\u63a7\u8fd9\u4e9b\u57fa\u7840\u8fd0\u7ef4\u52a8\u4f5c\u505a\u624e\u5b9e\u3002<\/p>\n<h2>\u603b\u7ed3\uff1a\u5148\u4ece\u77ed\u671f\u8bc1\u4e66\u8bd5\u70b9\uff0c\u518d\u9010\u6b65\u66ff\u6362\u957f\u671f\u516c\u94a5<\/h2>\n<p>\u603b\u7ed3\u6765\u770b\uff0cSSH \u8bc1\u4e66\u8ba4\u8bc1\u7684\u6838\u5fc3\u4ef7\u503c\uff0c\u662f\u628a\u767b\u5f55\u6743\u9650\u4ece\u201c\u6563\u843d\u5728\u6bcf\u53f0\u670d\u52a1\u5668\u4e0a\u7684\u957f\u671f\u516c\u94a5\u201d\u6536\u675f\u4e3a\u201c\u7531 CA \u96c6\u4e2d\u7b7e\u53d1\u7684\u77ed\u671f\u6388\u6743\u201d\u3002\u5b83\u80fd\u5e2e\u52a9\u591a\u670d\u52a1\u5668\u56e2\u961f\u964d\u4f4e\u56de\u6536\u6210\u672c\uff0c\u4e5f\u8ba9\u5ba1\u8ba1\u548c\u4e34\u65f6\u6388\u6743\u66f4\u6e05\u6670\u3002<\/p>\n<p>\u6211\u4eec\u5efa\u8bae\u6309 4 \u6b65\u63a8\u8fdb\uff1a\u5148\u521b\u5efa\u53d7\u63a7\u7684\u7528\u6237 CA\uff1b\u518d\u5728 2 \u53f0\u975e\u751f\u4ea7<a href=\"https:\/\/cn.hostease.com\/blog\/server\/\">\u670d\u52a1\u5668\u914d\u7f6e<\/a> <code>TrustedUserCAKeys<\/code>\uff1b\u968f\u540e\u7b7e\u53d1 8 \u5c0f\u65f6\u4ee5\u5185\u7684\u6d4b\u8bd5\u8bc1\u4e66\u5e76\u9a8c\u8bc1\u8fc7\u671f\u884c\u4e3a\uff1b\u6700\u540e\u628a\u7b7e\u53d1\u8bb0\u5f55\u3001\u64a4\u9500\u5217\u8868\u548c CA \u8f6e\u6362\u5199\u5165\u8fd0\u7ef4\u6d41\u7a0b\u3002\u5982\u679c\u4f60\u9700\u8981\u4e3a <a href=\"https:\/\/cn.hostease.com\/vps\/\">VPS\uff08\u865a\u62df\u4e13\u7528\u670d\u52a1\u5668\uff09<\/a>\u3001<a 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