Secure socket layer([tag]SSL[\/tag])\u534f\u8bae\u6700\u521d\u7531Netscape\u4f01\u4e1a\u53d1\u5c55\uff0c\u73b0\u5df2\u6210\u4e3a\u7f51\u7edc\u7528\u6765\u9274\u522b\u7f51\u7ad9 \u548c\u7f51\u9875\u6d4f\u89c8\u8005\u8eab\u4efd\uff0c\u4ee5\u53ca\u5728\u6d4f\u89c8\u5668\u4f7f\u7528\u8005\u53ca\u7f51\u9875\u670d\u52a1\u5668\u4e4b\u95f4\u8fdb\u884c\u52a0\u5bc6\u901a\u8baf\u7684\u5168\u7403\u5316\u6807\u51c6 \u3002\u7531\u4e8eSSL\u6280\u672f\u5df2\u5efa\u7acb\u5230\u6240\u6709\u4e3b\u8981\u7684\u6d4f\u89c8\u5668\u548cWEB\u670d\u52a1\u5668\u7a0b\u5e8f\u4e2d\uff0c\u56e0\u6b64\uff0c\u4ec5\u9700\u5b89\u88c5\u6570\u5b57\u8bc1\u4e66\uff0c\u6216\u670d\u52a1\u5668\u8bc1\u4e66\u5c31\u53ef\u4ee5\u6fc0\u6d3b\u670d\u52a1\u5668\u529f\u80fd\u4e86\u3002\u5bf9\u4e8eWeb\u4fe1\u606f\u4f20\u8f93\u901a\u9053\u7684\u673a\u5bc6\u6027\u53ca\u5b8c\u6574\u6027\uff0cSSL\u662f\u6700\u4f73\u7684\u89e3\u51b3\u65b9\u6848\uff0c\u76ee\u524d\u6240\u6709\u7684\u6d4f\u89c8\u5668\u548cWeb\u670d\u52a1\u5668\u90fd\u652f\u6301SSL\uff0c\u91c7\u7528SSL\u5728\u6280\u672f\u4e0a\u5df2\u7ecf\u5f88\u6210\u719f\uff0c\u4e92\u8054\u7f51\u7684\u5b89\u5168\u654f\u611f\u6570\u636e\u51e0\u4e4e\u90fd\u662f\u7531SSL\u901a\u9053\u4f20\u8f93\u7684\u3002
\n
\n\u91c7\u7528SSL\u6280\u672f\u548c\u6570\u5b57\u7b7e\u540d\u6280\u672f\u4fdd\u8bc1\u90ae\u4ef6\u7684\u5b89\u5168\u6027\uff0c\u4e3a\u4e86\u6ee1\u8db3\u4f01\u4e1a\u7528\u6237\u4fdd\u62a4\u5546\u4e1a\u79d8\u5bc6\u7684\u9700\u6c42 \uff0c\u63d0\u4f9b\u4e86\u5b8c\u5584\u90ae\u4ef6\u52a0\u5bc6\u548c\u8ba4\u8bc1\u529f\u80fd\uff0c\u91c7\u7528SSL\u6280\u672f\u5bf9\u90ae\u4ef6\u7684\u5b58\u50a8\u548c\u4f20\u8f93\u5b9e\u65bd\u52a0\u5bc6\uff0c\u4fdd\u8bc1\u90ae\u4ef6\u4e0d\u88ab\u7a83\u53d6\u548c\u7be1\u6539\uff1b\u5e76\u4e14\u63d0\u4f9b\u6570\u5b57\u7b7e\u540d\u6280\u672f\uff0c\u4ee5\u4fdd\u8bc1\u90ae\u4ef6\u7684\u771f\u5b9e\u6027\u3002\u7cfb\u7edf\u63d0\u4f9b\u4e86\u4ece\u666e\u901a\u7ea7\u5230\u7edd\u5bc6\u7ea7\u7b49\u591a\u79cd\u4fdd\u5bc6\u7b49\u7ea7\uff0c\u4ee5\u6ee1\u8db3\u4e0d\u540c\u73af\u5883\u4e0b\u7684\u4fdd\u5bc6\u9700\u6c42\u3002SSL\u534f\u8bae\u662f\u56e0\u7279\u7f51\u901a\u4fe1\u6807\u51c6\uff0c\u7528\u6765\u63d0\u4f9b\u4e24\u4e2a\u5e94\u7528\u4e4b\u95f4\u901a\u4fe1\u7684\u4fdd\u5bc6\uff0c\u53ef\u4fe1\u548c\u8eab\u4efd\u8ba4\u8bc1\u3002SSL\u6280\u672f\u4e00\u822c\u91c7\u7528\u516c\u5f00\u5bc6\u94a5\u6280\u672f\uff0c\u80fd\u591f\u63d0\u4f9b\uff1a\u4fe1\u606f\u52a0\u5bc6\u670d\u52a1\uff0c\u4fe1\u606f\u5b8c\u6574\u6027\u670d\u52a1\uff0c\u76f8\u4e92\u8ba4\u8bc1\u670d\u52a1\u8fd9\u4e09\u9879\u670d\u52a1\u3002
\n\u4e0b\u9762\uff0c\u6211\u4eec\u5c06\u4ece\u901a\u4fe1\u91cf\u5206\u6790\u3001\u4e3b\u52a8\u653b\u51fb\u3001\u91cd\u653e\u653b\u51fb\u3001\u5bc6\u7801\u7ec4\u56de\u6eda\u653b\u51fb\u4ee5\u53ca\u4e2d\u95f4\u4eba\u653b\u51fb\u8fd9\u4e94\u79cd\u5e38\u89c1\u7684\u5b89\u5168\u653b\u51fb\u5165\u624b\uff0c\u521d\u6b65\u5206\u6790SSL\u7684\u62b5\u5fa1\u653b\u51fb\u80fd\u529b\u3002
\n\u901a\u4fe1\u91cf\u5206\u6790
\n\u5982\u679c\u5e38\u89c4\u7684\u653b\u51fb\u5931\u8d25\uff0c\u5bc6\u7801\u7834\u8bd1\u4e13\u5bb6\u4f1a\u8f6c\u5411\u4f7f\u7528\u66f4\u590d\u6742\u7684\u653b\u51fb\u3002\u901a\u4fe1\u91cf\u5206\u6790\u662f\u53e6\u5916\u4e00\u79cd\u88ab\u52a8\u653b\u51fb\uff0c\u4f46\u5b83\u7ecf\u5e38\u662f\u6076\u610f\u653b\u51fb\uff0c\u56e0\u6b64\u503c\u5f97\u4e00\u63d0\u3002\u901a\u4fe1\u91cf\u5206\u6790\u7684\u76ee\u6807\u5728\u4e8e\uff0c\u901a\u8fc7\u68c0\u67e5\u5305\u4e2d\u672a\u52a0\u5bc6\u7684\u57df\u53ca\u5c5e\u6027\uff0c\u4ee5\u83b7\u5f97\u53d7\u4fdd\u62a4\u4f1a\u8bdd\u7684\u673a\u5bc6\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u901a\u8fc7\u68c0\u67e5\u672a\u52a0\u5bc6\u7684\u6e90\u548c\u76ee\u6807\u7684IP\u5730\u5740\uff08\u751a\u81f3TCP\u7aef\u53e3\u53f7\uff09\uff0c\u6216\u8005\u68c0\u67e5\u7f51\u7edc\u901a\u4fe1\u6d41\uff0c\u4e00\u4e2a\u901a\u4fe1\u91cf\u5206\u6790\u4e13\u5bb6\u53ef\u4ee5\u786e\u5b9a\u901a\u4fe1\u5404\u65b9\u7684\u901a\u4fe1\u5185\u5bb9\uff0c\u4f7f\u7528\u7684\u670d\u52a1\u7c7b\u578b\uff0c\u6709\u65f6\u751a\u81f3\u8fd8\u53ef\u4ee5\u83b7\u5f97\u6709\u5173\u5546\u4e1a\u6216\u4e2a\u513f\u5173\u7cfb\u7684\u4fe1\u606f\u3002\u5b9e\u9645\u4e0a\uff0c\u7528\u6237\u5927\u90fd\u8ba4\u4e3a\u901a\u4fe1\u91cf\u5206\u6790\u7684\u5a01\u80c1\u76f8\u5bf9\u6765\u8bf4\u662f\u65e0\u5bb3\u7684\uff0c\u56e0\u6b64SSL\u4e0d\u4f1a\u8bd5\u56fe\u963b\u6b62\u8fd9\u79cd\u653b\u51fb\u3002\u5ffd\u7565\u901a\u4fe1\u91cf\u5206\u6790\u770b\u6765\u662f\u4e00\u79cd\u53ef\u884c\u7684\u8bbe\u8ba1\u65b9\u6848\u3002
\n\u7136\u800c\u5728SSL\u4f53\u7cfb\u7ed3\u6784\u4e2d\uff0c\u901a\u4fe1\u91cf\u5206\u6790\u4ecd\u4f1a\u9020\u6210\u4e00\u4e9b\u5de7\u5999\u7684\u5a01\u80c1\u3002Bennet Yee\u5df2\u7ecf\u6307\u51fa\uff0c\u68c0\u67e5\u5bc6\u6587\u7684\u957f\u5ea6\u4f1a\u66b4\u9732\u51fa\u6709\u5173SSL\u6216\u88abSSL\u52a0\u5bc6\u7684\u7f51\u7ad9\u901a\u4fe1\u4e2d\u7528\u5230\u7684URL\u8bf7\u6c42\u7684\u4fe1\u606f\u3010Yee96\u3011\u3002\u5f53\u4e00\u4e2aWeb\u6d4f\u89c8\u5668\u901a\u8fc7\u52a0\u5bc6\u4f20\u8f93\uff08\u5982SSL\uff09\u8fde\u63a5\u5230\u4e00\u53f0Web\u670d\u52a1\u5668\u65f6\uff0c\u5305\u542b\u6709URL\u4fe1\u606f\u7684GET\u8bf7\u6c42\u4f1a\u4ee5\u52a0\u5bc6\u65b9\u5f0f\u8fdb\u884c\u4f20\u8f93\u3002\u4e25\u683c\u6765\u8bf4\uff0c\u6d4f\u89c8\u5668\u8981\u4e0b\u8f7d\u54ea\u4e00\u4e2a\u9875\u9762\uff0c\u8fd9\u79cd\u4fe1\u606f\u662f\u4fdd\u5bc6\u7684\u2014\u2014\u663e\u7136\uff0c\u5177\u6709URL\u65b9\u9762\u7684\u77e5\u8bc6\uff0c\u5bf9\u4e8e\u4e00\u4e2a\u60f3\u4e0b\u8f7d\u6574\u4e2a\u7f51\u7ad9\u7684\u4eba\u6765\u8bf4\uff0c\u8fd9\u5df2\u7ecf\u8db3\u591f\u4e86\u2014\u2014\u800c\u4e14\uff0c\u901a\u4fe1\u91cf\u5206\u6790\u53ef\u4ee5\u83b7\u5f97Web\u670d\u52a1\u5668\u7684\u8eab\u4efd\u4fe1\u606f\uff0c\u8bf7\u6c42\u7684URL\u957f\u5ea6\uff0c\u4ee5\u53ca\u4eceWeb\u670d\u52a1\u5668\u6240\u8fd4\u56de\u7684html\u6570\u636e\u7684\u957f\u5ea6\u3002\u8fd9\u4e2a\u6f0f\u6d1e\u5f80\u5f80\u4f7f\u5f97\u7a83\u542c\u8005\u80fd\u591f\u53d1\u73b0\u7528\u6237\u8bbf\u95ee\u4e86\u54ea\u4e9bWeb\u9875\u9762\u3002
\n\u4e0a\u8ff0\u5f31\u70b9\u4e4b\u6240\u4ee5\u51fa\u73b0\uff0c\u662f\u56e0\u4e3a\u5bc6\u6587\u957f\u5ea6\u66b4\u9732\u4e86\u660e\u6587\u7684\u957f\u5ea6\u3002SSL\u5728\u5757\u52a0\u5bc6\u6a21\u5f0f\u4e2d\u652f\u6301\u968f\u673a\u586b\u5145\uff0c\u800c\u5728\u6d41\u52a0\u5bc6\u6a21\u5f0f\u4e2d\u5374\u4e0d\u652f\u6301\u3002\u6211\u4eec\u76f8\u4fe1\uff0c\u5bf9\u4e8e\u6240\u6709\u7684\u52a0\u5bc6\u6a21\u5f0f\uff0cSSL\u5c06\u4f1a\u5728\u6700\u5c0f\u7a0b\u5ea6\u4e0a\u652f\u6301\u4efb\u610f\u957f\u5ea6\u586b\u5145\u7684\u4f7f\u7528\uff0c\u800c\u4e14\u4f1a\u4ed4\u7ec6\u5730\u8003\u8651\u5b83\u5728\u7279\u5b9a\u5e94\u7528\u7a0b\u5e8f\u4e2d\u7684\u9700\u6c42\u3002
\n\u4e3b\u52a8\u653b\u51fb
\nSSL\u80fd\u62b5\u5fa1\u4e3b\u52a8\u653b\u51fb\u4ee5\u5b89\u5168\u5730\u4fdd\u62a4\u673a\u5bc6\u6570\u636e\uff0c\u8fd9\u4e00\u70b9\u975e\u5e38\u91cd\u8981\u3002\u5f53\u7136\uff0c\u6240\u4f7f\u7528\u7684\u52a0\u5bc6\u7b97\u6cd5\u5e94\u8be5\u5728\u88ab\u9009\u62e9\u660e\u6587\u2215\u88ab\u9009\u62e9\u5bc6\u6587\u653b\u51fb\u4e0b\u662f\u5b89\u5168\u7684\uff0c\u4f46\u8fd9\u5bf9\u4e8e\u52a0\u5bc6\u7b97\u6cd5\u6765\u8bf4\u8fd8\u4e0d\u591f\u3002IETF\u7684IPSEC\u5de5\u4f5c\u7ec4\u7684\u6700\u8fd1\u7814\u7a76\u8868\u660e\uff0c\u5373\u4f7f\u6240\u4f7f\u7528\u7684\u5bc6\u7801\u5f3a\u5ea6\u8db3\u591f\uff0c\u5728\u8bb0\u5f55\u5c42\u4e0a\u7cbe\u660e\u7684\u4e3b\u52a8\u653b\u51fb\u4ecd\u80fd\u6253\u7834\u7cfb\u7edf\u7684\u4fdd\u5bc6\u6027\u3002SSL 3.0 \u7684\u8bb0\u5f55\u5c42\u80fd\u62b5\u5fa1\u8fd9\u4e9b\u5f3a\u6709\u529b\u7684\u653b\u51fb\uff1a\u66f4\u8fdb\u4e00\u6b65\uff0c\u4e3a\u4f55\u8fd9\u4e9b\u653b\u51fb\u4f1a\u88ab\u963b\u6b62\uff0c\u503c\u5f97\u6211\u4eec\u8ba8\u8bba\u3002
\nIPSEC\u4e2d\u7684\u4e00\u4e2a\u91cd\u8981\u7684\u4e3b\u52a8\u653b\u51fb\u662fBellovin\u7684\u526a\u8d34\u653b\u51fb\u3002\u56de\u60f3\u8d77\u6765\uff0c\u8981\u83b7\u5f97\u4fdd\u5bc6\u6027\uff0c\u5149\u5bf9\u94fe\u63a5\u8fdb\u884c\u52a0\u5bc6\u662f\u4e0d\u591f\u7684\u2014\u2014\u63a5\u6536\u7aef\u4e5f\u5fc5\u987b\u9632\u6b62\u654f\u611f\u6570\u636e\u5728\u65e0\u610f\u4e2d\u88ab\u6cc4\u9732\u51fa\u6765\u3002\u526a\u8d34\u653b\u51fb\u7684\u653b\u51fb\u65b9\u5f0f\u5c31\u662f\u8c0b\u6c42\u63a5\u6536\u7aef\u7684\u4fe1\u4efb\uff0c\u4f7f\u4e4b\u5bf9\u654f\u611f\u6570\u636e\u8fdb\u884c\u89e3\u5bc6\u5e76\u5c06\u8fd9\u4e9b\u6570\u636e\u6cc4\u9732\u7ed9\u5b83\u4eec\u3002
\nSSL 3.0\u80fd\u591f\u963b\u6b62\u526a\u8d34\u653b\u51fb\u3002\u963b\u6b62\u8fd9\u79cd\u653b\u51fb\u7684\u4e00\u79cd\u5c40\u90e8\u6027\u9632\u5fa1\u7b56\u7565\u662f\u4e3a\u6bcf\u4e00\u4e2a\u4e0d\u540c\u7684\u4e0a\u4e0b\u6587\u4f7f\u7528\u72ec\u7acb\u7684\u4f1a\u8bdd\u5bc6\u94a5\uff0c\u8fd9\u6837\u4fbf\u80fd\u5728\u4e0d\u540c\u7684\u8fde\u63a5\u4e4b\u95f4\uff0c\u4ee5\u53ca\u8fde\u63a5\u7684\u4e0d\u540c\u65b9\u5411\u4e4b\u95f4\u963b\u6b62\u526a\u8d34\u64cd\u4f5c\u3002SSL\u5df2\u7ecf\u4e3a\u6bcf\u4e2a\u8fde\u63a5\u65b9\u5411\u4f7f\u7528\u4e86\u72ec\u7acb\u7684\u5bc6\u94a5\u3002\u4f46\u662f\uff0c\u8fd9\u79cd\u673a\u5236\u65e0\u6cd5\u963b\u6b62\u4f20\u8f93\u4e2d\u4e00\u4e2a\u65b9\u5411\u4e0a\u7684\u526a\u8d34\u64cd\u4f5c\u3002\u5e94\u7528\u6700\u5e7f\u6cdb\u7684\u9632\u5fa1\u7b56\u7565\u662f\u5728\u6240\u6709\u52a0\u5bc6\u5305\u4e0a\u4f7f\u7528\u5f3a\u5927\u7684\u8ba4\u8bc1\u673a\u5236\uff0c\u4ee5\u963b\u6b62\u654c\u65b9\u5bf9\u5bc6\u6587\u6570\u636e\u7684\u4fee\u6539\u3002SSL\u8bb0\u5f55\u5c42\u786e\u5b9e\u91c7\u7528\u4e86\u8fd9\u79cd\u9632\u5fa1\u7b56\u7565\uff0c\u56e0\u6b64\u526a\u8d34\u64cd\u4f5c\u88ab\u5b8c\u5168\u963b\u6b62\u4f4f\u4e86\u3002
\n\u53e6\u4e00\u79cd\u4e3b\u52a8\u653b\u51fb\u662f\u77ed\u5757\u653b\u51fb\uff0c\u5b83\u4e3b\u8981\u9488\u5bf9IPSEC\u3002\u8fd9\u79cd\u653b\u51fb\u9002\u7528\u4e8e\u6700\u540e\u7684\u62a5\u6587\u5757\u5305\u542b\u4e00\u4e2a\u4e00\u5b57\u8282\u957f\u7684\u660e\u6587\u5e76\u4e14\u62a5\u6587\u5757\u5269\u4f59\u90e8\u5206\u7531\u968f\u673a\u6570\u586b\u5145\u7684\u60c5\u51b5\u3002\u5728SSL\u4e0a\u5e76\u6ca1\u6709\u660e\u663e\u7684\u77ed\u5757\u653b\u51fb\u3002SSL\u8bb0\u5f55\u5c42\u683c\u5f0f\u4e0e\u4ee5\u524d\u7684IPSEC\u683c\u5f0f\u76f8\u5f53\u7c7b\u4f3c\uff0c\u8fd9\u79cd\u683c\u5f0f\u5bb9\u6613\u906d\u5230\u653b\u51fb\uff0c\u56e0\u6b64\u53ef\u4ee5\u60f3\u8c61\uff0c\u4fee\u6539\u6027\u653b\u51fb\u4f1a\u5bf9SSL\u4ea7\u751f\u5a01\u80c1\u3002\u4f46\u662f\uff0c\u65e0\u8bba\u5982\u4f55\uff0c\u7531\u6807\u51c6SSL\u52a0\u5bc6\u7684Web\u670d\u52a1\u5668\u57fa\u672c\u4e0a\u4e0d\u4f1a\u53d7\u5230\u77ed\u5757\u653b\u51fb\u7684\u5a01\u80c1\uff0c\u56e0\u4e3a\u8fd9\u4e9b\u670d\u52a1\u5668\u4e0d\u4f1a\u7ecf\u5e38\u5bf9\u77ed\u5757\u8fdb\u884c\u52a0\u5bc6\u3002\uff08\u4f46\u8981\u6ce8\u610f\uff0c\u7531SSL\u52a0\u5bc6\u7684telnet\u5ba2\u6237\u7aef\u5fc5\u987b\u5f97\u5230\u7279\u6b8a\u7684\u4fdd\u62a4\uff0c\u4ee5\u9632\u6b62\u77ed\u5757\u653b\u51fb\uff0c\u56e0\u4e3a\u6bcf\u4e00\u6b21\u6309\u952e\u5728\u4f20\u9001\u65f6\u90fd\u662f\u4e00\u5b57\u8282\u957f\u7684\u6570\u636e\u5305\u3002\uff09
\n\u91cd\u653e\u653b\u51fb
\n\u5149\u9760\u4f7f\u7528\u62a5\u6587\u9274\u522b\u7801\uff08MAC\uff09\u4e0d\u80fd\u9632\u6b62\u5bf9\u65b9\u91cd\u590d\u53d1\u9001\u8fc7\u65f6\u7684\u4fe1\u606f\u5305\u3002SSL\u901a\u8fc7\u5728\u751f\u6210MAC\u7684\u6570\u636e\u4e2d\u52a0\u5165\u9690\u85cf\u7684\u5e8f\u5217\u53f7\uff0c\u6765\u9632\u6b62\u91cd\u653e\u653b\u51fb\u3002\u8fd9\u79cd\u673a\u5236\u4e5f\u53ef\u4ee5\u9632\u6b62\u88ab\u803d\u6401\u7684\uff0c\u88ab\u91cd\u65b0\u6392\u5e8f\u7684\uff0c\u6216\u8005\u662f\u88ab\u5220\u9664\u6570\u636e\u7684\u5e72\u6270\u3002\u5e8f\u5217\u53f7\u7684\u957f\u5ea6\u662f64bit\uff0c\u56e0\u6b64\u6253\u5305\u4e0d\u4f1a\u6709\u95ee\u9898\u3002\u53e6\u5916\uff0c\u5e8f\u5217\u53f7\u7531\u6bcf\u4e2a\u8fde\u63a5\u65b9\u5411\u5206\u522b\u7ef4\u62a4\uff0c\u800c\u4e14\u5728\u6bcf\u4e00\u6b21\u65b0\u7684\u5bc6\u94a5\u4ea4\u6362\u65f6\u8fdb\u884c\u66f4\u65b0\uff0c\u6240\u4ee5\u4e0d\u4f1a\u6709\u660e\u663e\u7684\u5f31\u70b9\u3002
\n\u5bc6\u7801\u7ec4\u56de\u6eda\u653b\u51fb\uff08CipherSuite Rollback attack\uff09
\nSSL 2.0\u5bc6\u94a5\u4ea4\u6362\u534f\u8bae\u4e2d\u6709\u4e00\u4e2a\u4e25\u91cd\u7684\u7f3a\u9677\uff1a\u4e3b\u52a8\u653b\u51fb\u8005\u80fd\u591f\u5728\u6697\u5730\u91cc\u8feb\u4f7f\u4e00\u4e2a\u5bb6\u5ead\u7528\u6237\u4f7f\u7528\u529f\u80fd\u88ab\u524a\u5f31\u7684\u51fa\u53e3\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5373\u4f7f\u901a\u4fe1\u53cc\u65b9\u90fd\u652f\u6301\u5e76\u9996\u9009\u4e86\u8f83\u9ad8\u7b49\u7ea7\u7684\u7b97\u6cd5\u3002\u8fd9\u5c31\u662f\u4eba\u4eec\u6240\u8bf4\u7684\u5bc6\u7801\u7ec4\u56de\u6eda\u653b\u51fb\uff08CipherSuite Rollback attack\uff09\uff0c\u5b83\u901a\u8fc7\u7f16\u8f91\u5728hello\u62a5\u6587\u4e2d\u53d1\u9001\u7684\u6240\u652f\u6301\u5bc6\u7801\u7ec4\u7684\u660e\u6587\u5217\u8868\u6765\u8fbe\u5230\u81ea\u8eab\u7684\u76ee\u7684\u3002SSL 3.0 \u4fee\u6b63\u4e86\u8fd9\u4e2a\u7f3a\u9677\uff0c\u5b83\u4f7f\u7528\u4e00\u4e2amaster_secret\u6765\u5bf9\u6240\u6709\u7684\u63e1\u624b\u534f\u8bae\u62a5\u6587\u8fdb\u884c\u9274\u522b\uff0c\u8fd9\u6837\u4e00\u6765\uff0c\u4fbf\u53ef\u5728\u63e1\u624b\u7ed3\u675f\u65f6\u68c0\u67e5\u51fa\u654c\u65b9\u7684\u4e0a\u8ff0\u884c\u4e3a\uff0c\u5982\u679c\u6709\u5fc5\u8981\uff0c\u8fd8\u53ef\u7ed3\u675f\u4f1a\u8bdd\u3002
\n\u63a5\u7740\uff0c\u6211\u4eec\u6765\u8be6\u7ec6\u63cf\u8ff0\u4e00\u4e0bSSL 3.0\u4e2d\u9632\u6b62\u4fee\u6539\u63e1\u624b\u534f\u8bae\u62a5\u6587\u7684\u673a\u5236\u3002\u5728\u4ee5\u524dSSL\u63e1\u624b\u534f\u8bae\u4e2d\uff0c\u6709\u51e0\u4e2a\u5e38\u89c1\u7684\u5f31\u70b9\uff0c\u6211\u4eec\u5c06\u4f9d\u6b21\u8fdb\u884c\u4ecb\u7ecd\u3002
\n\u6240\u6709\u521d\u59cb\u7684\u63e1\u624b\u534f\u8bae\u62a5\u6587\u5728\u4f20\u9001\u65f6\u90fd\u662f\u672a\u4fdd\u62a4\u7684\uff0c\u6b64\u65f6\u5bc6\u94a5\u4ea4\u6362\u534f\u8bae\u4f1a\u5c06\u5f53\u524d\u4f1a\u8bdd\u72b6\u6001\u6539\u4e3a\u672a\u51b3\u7684\u4f1a\u8bdd\u72b6\u6001\uff0c\u800c\u4e0d\u662f\u4fee\u6539\u5f53\u524d\u4f7f\u7528\u4e2d\u7684\u5404\u4e2a\u53c2\u6570\u3002\u5728\u534f\u5546\u5b8c\u6210\u4e4b\u540e\uff0c\u901a\u4fe1\u7684\u6bcf\u4e00\u65b9\u90fd\u53d1\u9001\u4e00\u4e2a\u77ed\u7684\u66f4\u6539\u5bc6\u7801\u89c4\u683c\u62a5\u6587\uff08change cipher spec message\uff09\uff0c\u8be5\u62a5\u6587\u4ec5\u4ec5\u662f\u8b66\u544a\u5bf9\u65b9\u5c06\u5f53\u524d\u72b6\u6001\u5347\u7ea7\u4e3a\u672a\u51b3\u7684\u4f1a\u8bdd\u72b6\u6001\u3002\u867d\u7136change_cipher_spec\u62a5\u6587\u672a\u53d7\u4fdd\u62a4\uff0c\u4f46\u662f\u65b0\u7684\u4f1a\u8bdd\u72b6\u6001\u8fd8\u662f\u5c06\u4ee5\u4e0b\u4e00\u4e2a\u62a5\u6587\u4e3a\u5f00\u59cb\u3002\u7d27\u8ddf\u5728change_cipher_spec\u62a5\u6587\u4e4b\u540e\u7684\u662f\u7ed3\u675f\uff08finished\uff09\u62a5\u6587\uff0c\u5b83\u5305\u542b\u4e86\u4e00\u4e2a\u62a5\u6587\u9274\u522b\u7801\uff08MAC\uff09\uff0c\u6b64MAC\u7531\u88abmaster_secret\u52a0\u5bc6\u8fc7\u7684\u6240\u6709\u63e1\u624b\u534f\u8bae\u62a5\u6587\u8ba1\u7b97\u5f97\u51fa\u3002\uff08\u57fa\u4e8e\u7279\u6b8a\u7684\u975e\u5b89\u5168\u6027\u56e0\u7d20\uff0cchange_cipher_spec\u62a5\u6587\u548calert\u62a5\u6587\u5728finished\u62a5\u6587\u4e2d\u6ca1\u6709\u8fdb\u884c\u9274\u522b\u3002\uff0948\u5b57\u8282\u957f\u7684master_secret\u4ece\u672a\u88ab\u6cc4\u9732\u51fa\u53bb\uff0c\u800c\u4e14\u4f1a\u8bdd\u5bc6\u94a5\u7531\u5b83\u4ea7\u751f\u3002\u8fd9\u5c31\u4fdd\u8bc1\u4e86\u5373\u4f7f\u4f1a\u8bdd\u5bc6\u94a5\u88ab\u4eba\u622a\u83b7\uff0cmaster_secret\u4ecd\u53ef\u5b89\u7136\u65e0\u6059\uff0c\u6240\u4ee5\u63e1\u624b\u534f\u8bae\u62a5\u6587\u80fd\u591f\u5b89\u5168\u7684\u5f97\u5230\u9274\u522b\u3002Finished\u62a5\u6587\u4f7f\u7528\u65b0\u5efa\u7684\u5bc6\u7801\u7ec4\uff08ciphersuite\uff09\u5bf9\u81ea\u8eab\u8fdb\u884c\u4fdd\u62a4\u3002\u901a\u4fe1\u5404\u65b9\u53ea\u6709\u5728\u6536\u5230\u5bf9\u65b9\u7684finished\u62a5\u6587\u5e76\u5bf9\u5176\u8fdb\u884c\u6838\u5b9e\u540e\uff0c\u624d\u4f1a\u63a5\u6536\u5e94\u7528\u5c42\u7684\u6570\u636e\u3002
\n\u4e2d\u95f4\u4eba\u653b\u51fb\uff08man_in_the_middle attack\uff09
\nSSL 3.0\u4e2d\u5305\u542b\u4e86\u5bf9Diffie-Hellman\u5bc6\u94a5\u4ea4\u6362\u8fdb\u884c\u77ed\u6682\u52a0\u5bc6\u7684\u652f\u6301\u3002Diffie-Hellman\u662f\u4e00\u79cd\u516c\u5f00\u5bc6\u94a5\u7b97\u6cd5\uff0c\u5b83\u80fd\u6709\u6548\u5730\u63d0\u4f9b\u5b8c\u5584\u7684\u4fdd\u5bc6\u529f\u80fd\uff0c\u5bf9\u4e8eSSL\u6765\u8bf4\u662f\u4e00\u4e2a\u6709\u76ca\u7684\u8865\u5145\u3002\u5728SSL 3.0 Diffie-Hellman\u5bc6\u94a5\u4ea4\u6362\u7cfb\u7edf\u4e2d\uff0c\u670d\u52a1\u5668\u5fc5\u987b\u6307\u5b9a\u6a21\u6570\u548c\u539f\u59cb\u6839\uff08\u8fd9\u4e24\u4e2a\u6570\u5747\u4e3a\u7d20\u6570\uff09\uff0c\u4ee5\u53caDiffie-Hellman\u7684\u6307\u6570\u3002\u4e3a\u4e86\u9632\u6b62\u670d\u52a1\u5668\u7aef\u4ea7\u751f\u7684\u9677\u95e8\uff0c\u5ba2\u6237\u7aef\u5e94\u8be5\u5bf9\u6a21\u6570\u548c\u539f\u59cb\u6839\u8fdb\u884c\u4ed4\u7ec6\u7684\u68c0\u67e5\uff0c\u770b\u5b83\u4eec\u662f\u5426\u4e3a\u56fa\u5b9a\u516c\u5171\u5217\u8868\u4e0a\u7684\u53ef\u9760\u6570\u503c\u3002\u5728SSL 3.0\u4e2d\uff0c\u901a\u8fc7\u5bf9\u670d\u52a1\u5668\u7aef\u7684Diffie-Hellman\u6307\u6570\u7684\u9274\u522b\uff0c\u53ef\u4ee5\u62b5\u5fa1\u4f17\u6240\u5468\u77e5\u7684\u4e2d\u95f4\u4eba\uff08man-in-the-middle\uff09\u653b\u51fb\u3002\uff08\u533f\u540d\u5ba2\u6237\u4e0d\u5fc5\u62e5\u6709\u8bc1\u4e66\u3002\uff09\u53e6\u5916\uff0c\u5728SSL 3.0\u4e2d\u5e76\u4e0d\u652f\u6301\u5177\u6709\u8f83\u9ad8\u6027\u80fd\u7684Diffie-Hellman\u53d8\u91cf\uff0c\u5982\u8f83\u5c0f\u7684\u6307\u6570\u53d8\u91cf\uff08160bit\uff09\u6216\u692d\u5706\u66f2\u7ebf\u53d8\u91cf\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
SSL\u6280\u672f\u8be6\u7ec6\u8bf4\u660e<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[31],"tags":[],"class_list":["post-936","post","type-post","status-publish","format-standard","hentry","category-usa-vps"],"_links":{"self":[{"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/posts\/936","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=936"}],"version-history":[{"count":0,"href":"https:\/\/tao0.date\/index.php?rest_route=\/wp\/v2\/posts\/936\/revisions"}],"wp:attachment":[{"href":"https:\/\/tao0.date\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=936"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=936"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tao0.date\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=936"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}