{"id":479402,"date":"2023-08-09T10:35:54","date_gmt":"2023-08-09T10:35:54","guid":{"rendered":""},"modified":"2023-09-05T11:18:46","modified_gmt":"2023-09-05T11:18:46","slug":"triple-des","status":"publish","type":"wiki","link":"https:\/\/oneproxy.pro\/cn\/wiki\/triple-des\/","title":{"rendered":"\u4e09\u91cd DES"},"content":{"rendered":"<p>Triple DES \u662f\u4e09\u91cd\u6570\u636e\u52a0\u5bc6\u6807\u51c6\u7684\u7f29\u5199\uff0c\u662f\u4e00\u79cd\u5bf9\u79f0\u5bc6\u94a5\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5e7f\u6cdb\u7528\u4e8e\u4fdd\u62a4\u5404\u79cd\u5e94\u7528\u548c\u884c\u4e1a\u4e2d\u7684\u654f\u611f\u6570\u636e\u3002\u5b83\u662f\u539f\u59cb\u6570\u636e\u52a0\u5bc6\u6807\u51c6 (DES) \u7684\u589e\u5f3a\u7248\u672c\uff0c\u901a\u8fc7\u5e94\u7528\u591a\u8f6e\u52a0\u5bc6\u663e\u7740\u63d0\u9ad8\u4e86\u5b89\u5168\u6027\u3002 Triple DES \u91c7\u7528 168 \u4f4d\u7684\u5bc6\u94a5\u957f\u5ea6\uff0c\u4f7f\u5176\u6bd4\u5176\u524d\u8eab\u66f4\u80fd\u62b5\u5fa1\u66b4\u529b\u653b\u51fb\u3002<\/p>\n<h2>Triple DES \u7684\u8d77\u6e90\u5386\u53f2\u53ca\u5176\u9996\u6b21\u63d0\u53ca<\/h2>\n<p>\u7531\u4e8e\u5bc6\u7801\u5206\u6790\u4eba\u5458\u8bc1\u660e\u539f\u59cb DES \u7531\u4e8e\u5176 56 \u4f4d\u5bc6\u94a5\u957f\u5ea6\u76f8\u5bf9\u8f83\u77ed\uff0c\u56e0\u6b64\u5f88\u5bb9\u6613\u53d7\u5230\u66b4\u529b\u653b\u51fb\uff0c\u56e0\u6b64\u5bf9\u589e\u5f3a\u5b89\u5168\u6027\u7684\u9700\u6c42\u51fa\u73b0\u4e86\u3002\u4e3a\u6b64\uff0c\u5f00\u53d1\u4e86 Triple DES \u6765\u63d0\u4f9b\u989d\u5916\u7684\u52a0\u5bc6\u5c42\uff0c\u663e\u7740\u589e\u52a0\u6709\u6548\u5bc6\u94a5\u957f\u5ea6\u5e76\u4f7f\u5176\u66f4\u52a0\u5b89\u5168\u3002<\/p>\n<p>\u6309\u987a\u5e8f\u5e94\u7528\u591a\u4e2a DES \u8fd0\u7b97\u7684\u6982\u5ff5\u53ef\u4ee5\u8ffd\u6eaf\u5230 20 \u4e16\u7eaa 70 \u5e74\u4ee3\uff0c\u5f53\u65f6\u5b83\u662f\u4f5c\u4e3a\u5b66\u672f\u7ec3\u4e60\u5f15\u5165\u7684\u3002\u7136\u800c\uff0c\u5b83\u4e8e 1998 \u5e74\u88ab\u7f8e\u56fd\u56fd\u5bb6\u6807\u51c6\u4e0e\u6280\u672f\u7814\u7a76\u6240 (NIST) \u6b63\u5f0f\u6807\u51c6\u5316\u4e3a TDEA\uff08\u4e09\u91cd\u6570\u636e\u52a0\u5bc6\u7b97\u6cd5\uff09\uff0c\u4e5f\u79f0\u4e3a Triple DES\u3002<\/p>\n<h2>\u6709\u5173\u4e09\u91cd DES \u7684\u8be6\u7ec6\u4fe1\u606f\u3002\u6269\u5c55\u4e3b\u9898\u4e09\u91cd DES<\/h2>\n<p>Triple DES \u901a\u8fc7\u8fde\u7eed\u4f7f\u7528\u4e09\u8f6e\u6570\u636e\u52a0\u5bc6\u6807\u51c6\u7b97\u6cd5\u6765\u8fd0\u884c\u3002\u6bcf\u8f6e\u90fd\u5305\u542b\u52a0\u5bc6\u548c\u89e3\u5bc6\u6b65\u9aa4\uff0c\u4f7f\u5f97\u7b97\u6cd5\u9ad8\u5ea6\u5b89\u5168\uff0c\u9002\u5408\u5404\u79cd\u5bc6\u7801\u5e94\u7528\u3002\u8fd9\u4e09\u8f6e\u6d89\u53ca\u4e09\u4e2a\u4e0d\u540c\u7684 56 \u4f4d\u5bc6\u94a5\uff0c\u5bfc\u81f4\u5bc6\u94a5\u603b\u957f\u5ea6\u4e3a 168 \u4f4d\u3002<\/p>\n<p>Triple DES \u4e2d\u7684\u52a0\u5bc6\u548c\u89e3\u5bc6\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\n<p>\u52a0\u5bc6\uff1a<\/p>\n<ul>\n<li>\u9996\u5148\u4f7f\u7528 DES \u7b97\u6cd5\u4f7f\u7528\u5bc6\u94a5 1 \u5bf9\u660e\u6587\u8fdb\u884c\u52a0\u5bc6\u3002<\/li>\n<li>\u7136\u540e\u4f7f\u7528\u5bc6\u94a5 2 \u89e3\u5bc6\u7b2c\u4e00\u6b21\u52a0\u5bc6\u7684\u8f93\u51fa\u3002<\/li>\n<li>\u6700\u540e\uff0c\u4f7f\u7528\u5bc6\u94a5 3 \u518d\u6b21\u5bf9\u7b2c\u4e8c\u6b21\u52a0\u5bc6\u8f93\u51fa\u8fdb\u884c\u52a0\u5bc6\uff0c\u5f97\u5230\u5bc6\u6587\u3002<\/li>\n<\/ul>\n<\/li>\n<li>\n<p>\u89e3\u5bc6\uff1a<\/p>\n<ul>\n<li>\u9996\u5148\u4f7f\u7528\u5bc6\u94a5 3 \u4ee5\u4e0e\u52a0\u5bc6\u8fc7\u7a0b\u76f8\u53cd\u7684\u987a\u5e8f\u5bf9\u5bc6\u6587\u8fdb\u884c\u89e3\u5bc6\u3002<\/li>\n<li>\u7136\u540e\u4f7f\u7528\u5bc6\u94a5 2 \u5bf9\u7b2c\u4e00\u6b21\u89e3\u5bc6\u7684\u8f93\u51fa\u8fdb\u884c\u52a0\u5bc6\u3002<\/li>\n<li>\u6700\u540e\uff0c\u4f7f\u7528\u5bc6\u94a51\u5bf9\u7b2c\u4e8c\u4e2a\u89e3\u5bc6\u8f93\u51fa\u8fdb\u884c\u89e3\u5bc6\uff0c\u663e\u793a\u539f\u59cb\u660e\u6587\u3002<\/li>\n<\/ul>\n<\/li>\n<\/ol>\n<h2>Triple DES \u7684\u5185\u90e8\u7ed3\u6784\u3002\u4e09\u91cd DES \u7684\u5de5\u4f5c\u539f\u7406<\/h2>\n<p>Triple DES \u5229\u7528 Feistel \u7f51\u7edc\u7ed3\u6784\uff0c\u8fd9\u662f\u4e00\u79cd\u5e7f\u6cdb\u4f7f\u7528\u7684\u5206\u7ec4\u5bc6\u7801\u8bbe\u8ba1\u65b9\u6cd5\u3002 Feistel\u7f51\u7edc\u5c06\u8f93\u5165\u6570\u636e\u5206\u6210\u4e24\u534a\uff0c\u6bcf\u4e00\u8f6e\u5bf9\u4e00\u534a\u8fdb\u884c\u64cd\u4f5c\uff0c\u800c\u53e6\u4e00\u534a\u4fdd\u6301\u4e0d\u53d8\u3002\u7136\u540e\u591a\u6b21\u91cd\u590d\u8be5\u8fc7\u7a0b\uff0c\u786e\u4fdd\u6570\u636e\u7684\u6269\u6563\u548c\u6df7\u6dc6\uff0c\u4ece\u800c\u589e\u5f3a\u7b97\u6cd5\u7684\u5b89\u5168\u6027\u3002<\/p>\n<p>Triple DES \u7684 Feistel \u7f51\u7edc\u7ed3\u6784\u6d89\u53ca\u4e09\u4e2a\u9636\u6bb5\uff0c\u6bcf\u4e2a\u9636\u6bb5\u4f7f\u7528 56 \u4f4d\u5bc6\u94a5\u4e4b\u4e00\u3002\u52a0\u5bc6\u8fc7\u7a0b\u5982\u4e0b\uff1a<\/p>\n<ol>\n<li>\u7b2c 1 \u9636\u6bb5\uff1a\u4f7f\u7528\u5bc6\u94a5 1 \u52a0\u5bc6\u5e76\u4f7f\u7528\u5bc6\u94a5 2 \u89e3\u5bc6\u3002<\/li>\n<li>\u7b2c 2 \u9636\u6bb5\uff1a\u4f7f\u7528\u5bc6\u94a5 3 \u89e3\u5bc6\u7b2c 1 \u9636\u6bb5\u7684\u8f93\u51fa\uff0c\u5e76\u4f7f\u7528\u5bc6\u94a5 1 \u518d\u6b21\u52a0\u5bc6\u3002<\/li>\n<li>\u7b2c 3 \u9636\u6bb5\uff1a\u4f7f\u7528\u5bc6\u94a5 2 \u89e3\u5bc6\u7b2c 2 \u9636\u6bb5\u7684\u8f93\u51fa\uff0c\u5e76\u4f7f\u7528\u5bc6\u94a5 3 \u518d\u6b21\u52a0\u5bc6\u3002<\/li>\n<\/ol>\n<p>\u89e3\u5bc6\u8fc7\u7a0b\u98a0\u5012\u5bc6\u94a5\u7684\u987a\u5e8f\uff1a<\/p>\n<ol>\n<li>\u7b2c 1 \u9636\u6bb5\uff1a\u4f7f\u7528\u5bc6\u94a5 2 \u89e3\u5bc6\u5e76\u4f7f\u7528\u5bc6\u94a5 3 \u52a0\u5bc6\u3002<\/li>\n<li>\u7b2c 2 \u9636\u6bb5\uff1a\u4f7f\u7528\u5bc6\u94a5 1 \u52a0\u5bc6\u7b2c 1 \u9636\u6bb5\u7684\u8f93\u51fa\uff0c\u5e76\u4f7f\u7528\u5bc6\u94a5 2 \u518d\u6b21\u89e3\u5bc6\u3002<\/li>\n<li>\u7b2c 3 \u9636\u6bb5\uff1a\u4f7f\u7528\u5bc6\u94a5 3 \u52a0\u5bc6\u7b2c 2 \u9636\u6bb5\u7684\u8f93\u51fa\uff0c\u5e76\u4f7f\u7528\u5bc6\u94a5 1 \u518d\u6b21\u89e3\u5bc6\u3002<\/li>\n<\/ol>\n<h2>Triple DES \u5173\u952e\u7279\u6027\u5206\u6790<\/h2>\n<p>Triple DES \u62e5\u6709\u51e0\u4e2a\u57fa\u672c\u7279\u6027\uff0c\u4f7f\u5176\u6210\u4e3a\u5b89\u5168\u6570\u636e\u52a0\u5bc6\u7684\u9996\u9009\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u589e\u5f3a\u5b89\u5168\u6027<\/strong>\uff1a\u4f7f\u7528\u4e09\u8f6e\u52a0\u5bc6\u548c168\u4f4d\u603b\u5bc6\u94a5\u957f\u5ea6\u663e\u7740\u63d0\u9ad8\u4e86\u5bf9\u66b4\u529b\u653b\u51fb\u7684\u62b5\u6297\u529b\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5411\u540e\u517c\u5bb9\u6027<\/strong>\uff1a\u4e09\u91cd DES \u53ef\u4e0e\u73b0\u6709 DES \u5b9e\u65bd\u7ed3\u5408\u4f7f\u7528\uff0c\u4f7f\u5176\u6210\u4e3a\u9010\u6e10\u8fc7\u6e21\u5230\u66f4\u5f3a\u52a0\u5bc6\u7684\u7ec4\u7ec7\u7684\u7406\u60f3\u9009\u62e9\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5b8c\u5584\u7684\u7b97\u6cd5<\/strong>\uff1a\u591a\u5e74\u6765\uff0c\u4e09\u91cd DES \u7ecf\u8fc7\u5bc6\u7801\u5b66\u4e13\u5bb6\u7684\u6df1\u5165\u7814\u7a76\u548c\u5206\u6790\uff0c\u8d62\u5f97\u4e86\u5176\u5f3a\u5927\u800c\u53ef\u9760\u7684\u52a0\u5bc6\u65b9\u6cd5\u7684\u58f0\u8a89\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5b9e\u65bd\u7b80\u5355<\/strong>\uff1a\u4e09\u91cd DES \u53ef\u4ee5\u5728\u786c\u4ef6\u548c\u8f6f\u4ef6\u4e2d\u6709\u6548\u5b9e\u65bd\uff0c\u786e\u4fdd\u5e7f\u6cdb\u91c7\u7528\u548c\u517c\u5bb9\u6027\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8868\u73b0<\/strong>\uff1a\u867d\u7136 Triple DES \u63d0\u4f9b\u4e86\u589e\u5f3a\u7684\u5b89\u5168\u6027\uff0c\u4f46\u7531\u4e8e\u5176\u591a\u8f6e\uff0c\u5b83\u53ef\u80fd\u4e0d\u5982\u67d0\u4e9b\u73b0\u4ee3\u52a0\u5bc6\u7b97\u6cd5\u90a3\u4e48\u5feb\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u5199\u51fa\u5b58\u5728\u54ea\u4e9b\u7c7b\u578b\u7684 Triple DES\u3002\u4f7f\u7528\u8868\u683c\u548c\u5217\u8868\u6765\u5199\u4f5c\u3002<\/h2>\n<p>Triple DES \u6709\u4e24\u79cd\u4e3b\u8981\u64cd\u4f5c\u6a21\u5f0f\uff1a<\/p>\n<ol>\n<li>\n<p><strong>TDEA (EDE)<\/strong>\uff1a\u4ee3\u8868\u201c\u52a0\u5bc6-\u89e3\u5bc6-\u52a0\u5bc6\u201d\u3002\u5728\u6b64\u6a21\u5f0f\u4e0b\uff0c\u6240\u6709\u4e09\u4e2a\u5bc6\u94a5\u90fd\u662f\u72ec\u7acb\u7684\uff0c\u52a0\u5bc6\u8fc7\u7a0b\u9075\u5faa\u524d\u9762\u8ba8\u8bba\u7684\u987a\u5e8f\uff1a\u4f7f\u7528\u5bc6\u94a5 1 \u52a0\u5bc6\u3001\u4f7f\u7528\u5bc6\u94a5 2 \u89e3\u5bc6\u3001\u4f7f\u7528\u5bc6\u94a5 3 \u52a0\u5bc6\u3002<\/p>\n<\/li>\n<li>\n<p><strong>TDEA (EEE)<\/strong>\uff1a\u4ee3\u8868\u201c\u52a0\u5bc6-\u52a0\u5bc6-\u52a0\u5bc6\u201d\u3002\u5728\u6b64\u6a21\u5f0f\u4e0b\uff0c\u4e09\u4e2a\u5bc6\u94a5\u76f8\u540c\uff0c\u5355\u4e2a\u5bc6\u94a5\u63d0\u4f9b\u4e09\u500d\u7684\u52a0\u5bc6\u5f3a\u5ea6\u3002\u52a0\u5bc6\u8fc7\u7a0b\u5982\u4e0b\uff1a\u7528\u5bc6\u94a51\u52a0\u5bc6\u3001\u7528\u5bc6\u94a52\u52a0\u5bc6\u3001\u7528\u5bc6\u94a53\u52a0\u5bc6\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u4ee5\u4e0b\u662f\u4e24\u79cd Triple DES \u6a21\u5f0f\u7684\u6bd4\u8f83\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u6a21\u5f0f<\/th>\n<th>\u5173\u952e\u72ec\u7acb\u6027<\/th>\n<th>\u94a5\u5319\u6570\u91cf<\/th>\n<th>\u52a0\u5bc6\u5f3a\u5ea6<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>TDEA (EDE)<\/td>\n<td>\u72ec\u7acb\u7684<\/td>\n<td>3<\/td>\n<td>168 \u4f4d\uff08\u6bcf\u4e2a\u5bc6\u94a5 56 \u4f4d\uff09<\/td>\n<\/tr>\n<tr>\n<td>TDEA (EEE)<\/td>\n<td>\u76f8\u540c\u7684<\/td>\n<td>1<\/td>\n<td>168 \u4f4d\uff08\u6bcf\u4e2a\u5bc6\u94a5 56 \u4f4d\uff09<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Triple DES \u7684\u4f7f\u7528\u65b9\u6cd5\u3001\u95ee\u9898\u4ee5\u53ca\u4e0e\u4f7f\u7528\u76f8\u5173\u7684\u89e3\u51b3\u65b9\u6848\u3002<\/h2>\n<p>\u4e09\u91cd DES \u5df2\u5e7f\u6cdb\u5e94\u7528\u4e8e\u6570\u636e\u5b89\u5168\u81f3\u5173\u91cd\u8981\u7684\u5404\u79cd\u5e94\u7528\u4e2d\u3002\u4e00\u4e9b\u5e38\u89c1\u7684\u7528\u4f8b\u5305\u62ec\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u91d1\u878d\u4ea4\u6613<\/strong>\uff1a\u4e09\u91cd DES \u7528\u4e8e\u4fdd\u62a4\u7f51\u4e0a\u94f6\u884c\u4ea4\u6613\u3001ATM \u901a\u4fe1\u548c\u7535\u5b50\u652f\u4ed8\u7cfb\u7edf\uff0c\u786e\u4fdd\u8d22\u52a1\u6570\u636e\u7684\u673a\u5bc6\u6027\u548c\u5b8c\u6574\u6027\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5b89\u5168\u901a\u8baf<\/strong>\uff1a\u5b83\u7528\u4e8e\u865a\u62df\u4e13\u7528\u7f51\u7edc (VPN) \u548c\u5176\u4ed6\u5b89\u5168\u901a\u4fe1\u901a\u9053\uff0c\u4ee5\u4fdd\u62a4\u654f\u611f\u4fe1\u606f\u514d\u906d\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u9057\u7559\u7cfb\u7edf<\/strong>\uff1a\u4e09\u91cd DES \u7528\u4e8e\u4fdd\u62a4\u4ecd\u4f9d\u8d56\u539f\u59cb DES \u52a0\u5bc6\u7684\u65e7\u7cfb\u7edf\u4e2d\u7684\u6570\u636e\uff0c\u786e\u4fdd\u5411\u540e\u517c\u5bb9\u6027\u800c\u4e0d\u5f71\u54cd\u5b89\u5168\u6027\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u6311\u6218\u548c\u89e3\u51b3\u65b9\u6848\uff1a<\/p>\n<ul>\n<li>\n<p><strong>\u8868\u73b0<\/strong>\uff1a\u7531\u4e8e\u4e09\u91cd DES \u5177\u6709\u591a\u8f6e\uff0c\u56e0\u6b64\u4e0e\u66f4\u73b0\u4ee3\u7684\u52a0\u5bc6\u7b97\u6cd5\u76f8\u6bd4\uff0c\u4e09\u91cd DES \u53ef\u80fd\u4f1a\u66f4\u6162\u3002\u7136\u800c\uff0c\u786c\u4ef6\u52a0\u901f\u548c\u4f18\u5316\u7684\u8f6f\u4ef6\u5b9e\u73b0\u53ef\u4ee5\u7f13\u89e3\u8fd9\u4e2a\u95ee\u9898\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u5bc6\u94a5\u7ba1\u7406<\/strong>\uff1a\u7ba1\u7406\u548c\u5b89\u5168\u5206\u53d1\u4e09\u4e2a 56 \u4f4d\u5bc6\u94a5\u53ef\u80fd\u5f88\u590d\u6742\u3002\u5bc6\u94a5\u7ba1\u7406\u7cfb\u7edf\uff0c\u4f8b\u5982\u5bc6\u94a5\u7ba1\u7406\u4e92\u64cd\u4f5c\u534f\u8bae (KMIP)\uff0c\u6709\u52a9\u4e8e\u5e94\u5bf9\u8fd9\u4e00\u6311\u6218\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u8fc7\u6e21\u5230\u66f4\u5f3a\u5927\u7684\u7b97\u6cd5<\/strong>\uff1a\u968f\u7740\u6280\u672f\u7684\u8fdb\u6b65\uff0c\u7ec4\u7ec7\u53ef\u80fd\u9700\u8981\u8fc7\u6e21\u5230\u66f4\u5b89\u5168\u7684\u7b97\u6cd5\uff0c\u4f8b\u5982 AES\u3002\u89c4\u5212\u548c\u9010\u6b65\u8fc1\u79fb\u6709\u52a9\u4e8e\u786e\u4fdd\u5e73\u7a33\u8fc7\u6e21\u800c\u4e0d\u5f71\u54cd\u5b89\u5168\u6027\u3002<\/p>\n<\/li>\n<\/ul>\n<h2>\u4ee5\u8868\u683c\u548c\u5217\u8868\u7684\u5f62\u5f0f\u5217\u51fa\u4e3b\u8981\u7279\u5f81\u4ee5\u53ca\u4e0e\u7c7b\u4f3c\u672f\u8bed\u7684\u5176\u4ed6\u6bd4\u8f83\u3002<\/h2>\n<p>\u8ba9\u6211\u4eec\u5c06 Triple DES \u4e0e\u53e6\u4e00\u79cd\u5e7f\u6cdb\u4f7f\u7528\u7684\u52a0\u5bc6\u7b97\u6cd5\u2014\u2014\u9ad8\u7ea7\u52a0\u5bc6\u6807\u51c6 (AES) \u8fdb\u884c\u6bd4\u8f83\uff1a<\/p>\n<table>\n<thead>\n<tr>\n<th>\u7279\u5f81<\/th>\n<th>\u4e09\u91cd DES<\/th>\n<th>AES<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td>\u7b97\u6cd5\u7c7b\u578b<\/td>\n<td>\u5bf9\u79f0<\/td>\n<td>\u5bf9\u79f0<\/td>\n<\/tr>\n<tr>\n<td>\u5757\u5927\u5c0f<\/td>\n<td>64\u4f4d<\/td>\n<td>128\u4f4d<\/td>\n<\/tr>\n<tr>\n<td>\u5bc6\u94a5\u957f\u5ea6<\/td>\n<td>168 \u4f4d\uff08\u6709\u6548\uff09<\/td>\n<td>128\u3001192 \u6216 256 \u4f4d<\/td>\n<\/tr>\n<tr>\n<td>\u52a0\u5bc6\u8f6e\u6b21<\/td>\n<td>3<\/td>\n<td>10\u300112 \u6216 14\uff08\u53d6\u51b3\u4e8e\u5bc6\u94a5\u957f\u5ea6\uff09<\/td>\n<\/tr>\n<tr>\n<td>\u5b89\u5168\u5f3a\u5ea6<\/td>\n<td>\u7f13\u548c<\/td>\n<td>\u9ad8\u7684<\/td>\n<\/tr>\n<tr>\n<td>\u8868\u73b0<\/td>\n<td>\u6bd4 AES \u6162<\/td>\n<td>\u901a\u5e38\u6bd4 Triple DES \u66f4\u5feb<\/td>\n<\/tr>\n<tr>\n<td>\u6807\u51c6\u5316<\/td>\n<td>\u5e7f\u6cdb\u6807\u51c6\u5316<\/td>\n<td>\u9ad8\u5ea6\u6807\u51c6\u5316<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>\u4e0e Triple DES \u76f8\u5173\u7684\u672a\u6765\u524d\u666f\u548c\u6280\u672f\u3002<\/h2>\n<p>\u867d\u7136 Triple DES \u591a\u5e74\u6765\u4e00\u76f4\u4f5c\u4e3a\u4e00\u79cd\u53ef\u9760\u7684\u52a0\u5bc6\u65b9\u6cd5\uff0c\u4f46\u6280\u672f\u7684\u8fdb\u6b65\u548c\u66f4\u5f3a\u5927\u7b97\u6cd5\u7684\u53ef\u7528\u6027\u5bfc\u81f4\u5176\u5e7f\u6cdb\u4f7f\u7528\u7684\u4e0b\u964d\u3002\u7ec4\u7ec7\u73b0\u5728\u6b63\u5728\u91c7\u7528\u66f4\u73b0\u4ee3\u7684\u52a0\u5bc6\u7b97\u6cd5\uff0c\u4f8b\u5982 AES\uff0c\u5b83\u63d0\u4f9b\u66f4\u9ad8\u7684\u5b89\u5168\u6027\u548c\u6539\u8fdb\u7684\u6027\u80fd\u3002\u52a0\u5bc6\u9886\u57df\u4e0d\u65ad\u53d1\u5c55\uff0c\u7814\u7a76\u4eba\u5458\u4e0d\u65ad\u5f00\u53d1\u65b0\u7684\u52a0\u5bc6\u6280\u672f\u6765\u5e94\u5bf9\u65b0\u51fa\u73b0\u7684\u5a01\u80c1\u5e76\u4fdd\u62a4\u654f\u611f\u6570\u636e\u3002<\/p>\n<h2>\u5982\u4f55\u4f7f\u7528\u4ee3\u7406\u670d\u52a1\u5668\u6216\u5982\u4f55\u5c06\u4ee3\u7406\u670d\u52a1\u5668\u4e0e Triple DES \u5173\u8054\u3002<\/h2>\n<p>\u4ee3\u7406\u670d\u52a1\u5668\u5728\u589e\u5f3a\u8bbf\u95ee\u4e92\u8054\u7f51\u65f6\u7684\u9690\u79c1\u548c\u5b89\u5168\u65b9\u9762\u53d1\u6325\u7740\u81f3\u5173\u91cd\u8981\u7684\u4f5c\u7528\u3002\u901a\u8fc7\u5145\u5f53\u7528\u6237\u548c Web \u670d\u52a1\u5668\u4e4b\u95f4\u7684\u4e2d\u4ecb\uff0c\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u4fc3\u8fdb\u4f7f\u7528 Triple DES \u8fdb\u884c\u5b89\u5168\u6570\u636e\u4f20\u8f93\u3002\u4ee5\u4e0b\u662f\u4ee3\u7406\u670d\u52a1\u5668\u4e0e Triple DES \u5173\u8054\u7684\u4e00\u4e9b\u65b9\u6cd5\uff1a<\/p>\n<ol>\n<li>\n<p><strong>\u5b89\u5168\u6570\u636e\u4f20\u8f93<\/strong>\uff1a\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u5728\u5c06\u6570\u636e\u8f6c\u53d1\u5230\u76ee\u7684\u5730\u4e4b\u524d\u4f7f\u7528 Triple DES \u52a0\u5bc6\u548c\u89e3\u5bc6\u6570\u636e\uff0c\u786e\u4fdd\u7528\u6237\u548c\u7f51\u7ad9\u4e4b\u95f4\u7684\u5b89\u5168\u901a\u4fe1\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u9690\u79c1\u4fdd\u62a4<\/strong>\uff1a\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u9690\u85cf\u7528\u6237\u7684 IP \u5730\u5740\u5e76\u52a0\u5bc6\u5176\u6570\u636e\uff0c\u4e3a\u4ed6\u4eec\u7684\u5728\u7ebf\u6d3b\u52a8\u6dfb\u52a0\u989d\u5916\u7684\u5b89\u5168\u5c42\u548c\u533f\u540d\u6027\u3002<\/p>\n<\/li>\n<li>\n<p><strong>\u6d41\u91cf\u8fc7\u6ee4<\/strong>\uff1a\u4ee3\u7406\u670d\u52a1\u5668\u53ef\u4ee5\u4f7f\u7528 Triple DES \u6765\u68c0\u67e5\u548c\u8fc7\u6ee4\u4f20\u5165\u548c\u4f20\u51fa\u7684\u6570\u636e\uff0c\u6709\u52a9\u4e8e\u9632\u6b62\u672a\u7ecf\u6388\u6743\u7684\u8bbf\u95ee\u548c\u6f5c\u5728\u5a01\u80c1\u3002<\/p>\n<\/li>\n<\/ol>\n<h2>\u76f8\u5173\u94fe\u63a5<\/h2>\n<p>\u6709\u5173 Triple DES \u53ca\u5176\u5e94\u7528\u7a0b\u5e8f\u7684\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u8003\u8651\u63a2\u7d22\u4ee5\u4e0b\u8d44\u6e90\uff1a<\/p>\n<ol>\n<li>\n<p><a href=\"https:\/\/csrc.nist.gov\/publications\/detail\/sp\/800-67\/rev-1\/final\" target=\"_new\" rel=\"noopener nofollow\">NIST \u7279\u522b\u51fa\u7248\u7269 800-67 Rev.1<\/a>\uff1aNIST \u7684\u6587\u6863\u63d0\u4f9b\u6709\u5173\u4e09\u91cd\u6570\u636e\u52a0\u5bc6\u7b97\u6cd5\u7684\u6307\u5357\u3002<\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/crypto.stanford.edu\/~dabo\/cryptobook\/\" target=\"_new\" rel=\"noopener nofollow\">\u5bc6\u7801\u5b66\u7b80\u4ecb<\/a>\uff1a\u6709\u5173\u5bc6\u7801\u5b66\u548c\u52a0\u5bc6\u6280\u672f\u7684\u7efc\u5408\u8d44\u6e90\u3002<\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/www.cloudflare.com\/learning\/security\/glossary\/symmetric-vs-asymmetric-encryption\/\" target=\"_new\" rel=\"noopener nofollow\">\u4e86\u89e3\u5bf9\u79f0\u548c\u975e\u5bf9\u79f0\u52a0\u5bc6<\/a>\uff1a\u4e00\u7bc7\u89e3\u91ca\u5bf9\u79f0\u52a0\u5bc6\u65b9\u6cd5\u548c\u975e\u5bf9\u79f0\u52a0\u5bc6\u65b9\u6cd5\u4e4b\u95f4\u5dee\u5f02\u7684\u6587\u7ae0\u3002<\/p>\n<\/li>\n<li>\n<p><a href=\"https:\/\/oneproxy.pro\/cn\/blog\/the-role-of-proxy-servers-in-data-security\/\" target=\"_new\" rel=\"noopener\">\u4ee3\u7406\u670d\u52a1\u5668\u5728\u6570\u636e\u5b89\u5168\u4e2d\u7684\u4f5c\u7528<\/a>\uff1aOneProxy \u7f51\u7ad9\u4e0a\u7684\u4e00\u7bc7\u535a\u5ba2\u6587\u7ae0\u8ba8\u8bba\u4ee3\u7406\u670d\u52a1\u5668\u5982\u4f55\u4fc3\u8fdb\u6570\u636e\u5b89\u5168\u548c\u9690\u79c1\u3002<\/p>\n<\/li>\n<\/ol>\n<p>\u4e09\u91cd DES \u4ecd\u7136\u662f\u5404\u79cd\u9057\u7559\u7cfb\u7edf\u548c\u5e94\u7528\u7a0b\u5e8f\u7684\u91cd\u8981\u52a0\u5bc6\u65b9\u6cd5\u3002\u7136\u800c\uff0c\u968f\u7740\u6280\u672f\u7684\u8fdb\u6b65\uff0c\u7ec4\u7ec7\u8bc4\u4f30\u5176\u5b89\u5168\u9700\u6c42\u5e76\u8003\u8651\u91c7\u7528\u66f4\u5f3a\u5927\u7684\u52a0\u5bc6\u7b97\u6cd5\u6765\u9632\u5fa1\u73b0\u4ee3\u5a01\u80c1\u81f3\u5173\u91cd\u8981\u3002\u53ca\u65f6\u4e86\u89e3\u52a0\u5bc6\u6280\u672f\u7684\u6700\u65b0\u53d1\u5c55\uff0c\u4ee5\u6709\u6548\u4fdd\u62a4\u60a8\u7684\u654f\u611f\u4fe1\u606f\u3002<\/p>","protected":false},"featured_media":479403,"menu_order":0,"template":"","meta":{"_acf_changed":false,"content-type":"","inline_featured_image":false,"footnotes":""},"class_list":["post-479402","wiki","type-wiki","status-publish","has-post-thumbnail","hentry"],"acf":{"faq_title":"Frequently Asked Questions about <mark>Triple DES: Secure Data Encryption for Modern Communication<\/mark>","faq_items":[{"question":"What is Triple DES?","answer":"<p>Triple DES, short for Triple Data Encryption Standard, is a symmetric key encryption algorithm that provides enhanced security by applying three rounds of the Data Encryption Standard (DES) in succession. This creates a total key length of 168 bits, significantly improving resistance to brute-force attacks compared to the original DES.<\/p>"},{"question":"How did Triple DES originate?","answer":"<p>The need for stronger encryption arose as cryptanalysts demonstrated vulnerabilities in the original DES due to its short 56-bit key length. Triple DES was developed to address these concerns and was standardized by NIST in 1998. Its concept of applying multiple DES operations dates back to the 1970s.<\/p>"},{"question":"How does Triple DES work?","answer":"<p>Triple DES operates using the Feistel network structure and three stages of encryption and decryption. In the encryption process, the plaintext is encrypted with Key 1, decrypted with Key 2, and then encrypted again with Key 3. Decryption reverses this process, providing robust data protection.<\/p>"},{"question":"What are the key features of Triple DES?","answer":"<p>Triple DES boasts several important features:<\/p><ol><li>Enhanced Security: With its 168-bit key length, Triple DES offers strong resistance to attacks.<\/li><li>Backward Compatibility: It can be used with existing DES implementations, facilitating gradual transitions to stronger encryption.<\/li><li>Well-Established: Triple DES has been widely studied and is trusted for its reliability.<\/li><li>Simple Implementation: It can be efficiently implemented in both hardware and software systems.<\/li><\/ol>"},{"question":"What are the different modes of Triple DES?","answer":"<p>There are two primary modes of Triple DES:<\/p><ol><li>TDEA (EDE): This mode uses three independent keys and follows the sequence of encryption, decryption, and encryption (EDE).<\/li><li>TDEA (EEE): In this mode, all three keys are the same, providing three times the encryption strength with a single key.<\/li><\/ol>"},{"question":"Where can Triple DES be used?","answer":"<p>Triple DES is employed in various applications, including:<\/p><ol><li>Financial Transactions: Securing online banking, ATM communication, and electronic payment systems.<\/li><li>Secure Communication: Used in Virtual Private Networks (VPNs) for secure data transmission.<\/li><li>Legacy Systems: Ensuring security in older systems that rely on the original DES encryption.<\/li><\/ol>"},{"question":"What are the challenges related to Triple DES usage?","answer":"<p>While Triple DES offers robust security, it does come with some challenges:<\/p><ol><li>Performance: It may be slower compared to modern encryption algorithms.<\/li><li>Key Management: Managing and distributing three 56-bit keys can be complex.<\/li><li>Transition to Stronger Algorithms: Organizations may need to transition to more secure algorithms like AES in the future.<\/li><\/ol>"},{"question":"How does Triple DES compare to AES?","answer":"<p>Triple DES and AES are both widely used encryption algorithms, but they differ in key aspects:<\/p><ul><li>Triple DES offers moderate security with a 168-bit key length, while AES provides high security with 128, 192, or 256-bit key lengths.<\/li><li>AES generally outperforms Triple DES due to its design and use of larger block sizes.<\/li><\/ul>"},{"question":"How can proxy servers enhance Triple DES usage?","answer":"<p>Proxy servers act as intermediaries between users and web servers, and they can enhance Triple DES usage in several ways:<\/p><ol><li>Secure Data Transmission: Proxy servers can encrypt and decrypt data using Triple DES, ensuring secure communication.<\/li><li>Privacy Protection: They can hide users' IP addresses and encrypt data, adding an extra layer of security and anonymity.<\/li><li>Traffic Filtering: Proxy servers can inspect and filter data to prevent unauthorized access and potential threats.<\/li><\/ol>"}]},"_links":{"self":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/479402","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki"}],"about":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/types\/wiki"}],"version-history":[{"count":0,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/wiki\/479402\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media\/479403"}],"wp:attachment":[{"href":"https:\/\/oneproxy.pro\/cn\/wp-json\/wp\/v2\/media?parent=479402"}],"curies":[{"name":"\u53ef\u6e7f\u6027\u7c89\u5242","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}