{"id":199366,"date":"2024-05-10T01:00:26","date_gmt":"2024-05-09T17:00:26","guid":{"rendered":"https:\/\/docs.pingcode.com\/ask\/ask-ask\/199366.html"},"modified":"2024-05-10T01:00:40","modified_gmt":"2024-05-09T17:00:40","slug":"des-%e7%ae%97%e6%b3%95%e7%9a%84%e8%ae%be%e8%ae%a1%e6%80%9d%e8%b7%af%e6%98%af%e4%bb%80%e4%b9%88","status":"publish","type":"post","link":"https:\/\/docs.pingcode.com\/ask\/199366.html","title":{"rendered":"DES \u7b97\u6cd5\u7684\u8bbe\u8ba1\u601d\u8def\u662f\u4ec0\u4e48"},"content":{"rendered":"

\"DES<\/p>\n

DES\uff08\u6570\u636e\u52a0\u5bc6\u6807\u51c6\uff09\u7b97\u6cd5\u7684\u8bbe\u8ba1\u601d\u8def\u4e3b\u8981\u57fa\u4e8e\u7f6e\u6362\uff08Permutation\uff09<\/strong>\u3001\u66ff\u6362\uff08Substitution\uff09<\/strong>\u3001\u8fed\u4ee3\uff08Iteration\uff09\u8fd9\u4e09\u5927\u6838\u5fc3\u539f\u5219\u3002\u7f6e\u6362<\/strong>\u4f5c\u4e3aDES\u7b97\u6cd5\u7684\u57fa\u77f3\uff0c\u901a\u8fc7\u5bf9\u6570\u636e\u4f4d\u8fdb\u884c\u91cd\u65b0\u6392\u5217\u6765\u9690\u85cf\u4fe1\u606f\u7684\u7ed3\u6784\u7279\u5f81\u3002\u800c<\/strong>\u66ff\u6362<\/strong>\u5219\u4f9d\u8d56\u4e8eS\u76d2\uff08Substitution-boxes\uff09\u5c06\u8f93\u5165\u6620\u5c04\u5230\u67d0\u4e2a\u8f93\u51fa\uff0c\u589e\u5f3a\u4e86\u7b97\u6cd5\u5bf9\u653b\u51fb\u7684\u62b5\u6297\u529b\u3002\u63a5\u7740\uff0c\u8fed\u4ee3<\/strong>\u901a\u8fc7\u591a\u8f6e\u7684\u91cd\u590d\u5904\u7406\uff0c\u589e\u5f3a\u4e86\u52a0\u5bc6\u8fc7\u7a0b\u7684\u590d\u6742\u5ea6\u548c\u5b89\u5168\u6027\u3002\u5176\u4e2d\uff0c\u8fed\u4ee3\u8fc7\u7a0b\u65f6\u7684\u6bcf\u4e00\u8f6e\u90fd\u4f1a\u7528\u5230\u4e0d\u540c\u7684\u5bc6\u94a5\uff0c\u8fd9\u4e9b\u5bc6\u94a5\u662f\u7531\u4e00\u4e2a\u4e3b\u5bc6\u94a5\u901a\u8fc7\u5bc6\u94a5\u8c03\u5ea6\u7b97\u6cd5\u4ea7\u751f\uff0c\u8fd9\u4e00\u673a\u5236\u6781\u5927\u5730\u63d0\u9ad8\u4e86\u7834\u89e3\u7684\u96be\u5ea6\u3002<\/p>\n<\/p>\n

DES\u7b97\u6cd5\u8fc7\u7a0b\u4e2d\u7684\u8fed\u4ee3\uff08Iteration\uff09\u673a\u5236\u5c24\u5176\u503c\u5f97\u8be6\u7ec6\u63cf\u8ff0\u3002\u5b83\u91c7\u752816\u8f6e\u7684Feistel\u7ed3\u6784\uff0c\u5176\u4e2d\u6bcf\u4e00\u8f6e\u90fd\u5c0664\u4f4d\u8f93\u5165\u6570\u636e\u5206\u4e3a\u5de6\u53f3\u4e24\u90e8\u4efd\uff0c\u5e76\u8fdb\u884c\u7279\u5b9a\u7684\u52a0\u5bc6\u64cd\u4f5c\u3002\u5728\u6bcf\u4e00\u8f6e\u4e2d\uff0c\u5de6\u534a\u90e8\u4efd\u901a\u8fc7\u4e00\u4e2a\u56fa\u5b9a\u7684\u7f6e\u6362\u51fd\u6570\u4e0e\u53f3\u534a\u90e8\u4efd\u8fdb\u884c\u4ea4\u6362\uff0c\u800c\u53f3\u534a\u90e8\u4efd\u5219\u4e0e\u901a\u8fc7\u5bc6\u94a5\u6269\u5c55\u548cS\u76d2\u5904\u7406\u540e\u7684\u5de6\u534a\u90e8\u4efd\u8fdb\u884c\u5f02\u6216\uff08XOR\uff09\u64cd\u4f5c\u3002\u8fd9\u79cd\u8bbe\u8ba1\u786e\u4fdd\u4e86\u52a0\u5bc6\u8fc7\u7a0b\u7684\u201c\u6df7\u6dc6\u4e0e\u6269\u6563\u201d\uff0c\u5b9e\u73b0\u4e86\u9ad8\u5ea6\u7684\u5b89\u5168\u6027\u3002\u8fed\u4ee3\u7684\u4f7f\u7528\u4f7f\u5f97\u6bcf\u8f6e\u7684\u8f93\u51fa\u90fd\u4f9d\u8d56\u4e8e\u524d\u4e00\u8f6e\u7684\u8f93\u51fa\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u5f3a\u5927\u7684\u52a0\u5bc6\u6548\u679c\u3002<\/p>\n<\/p>\n

\u4e00\u3001DES\u7b97\u6cd5\u7ed3\u6784<\/h2>\n<\/p>\n

DES\u7b97\u6cd5\u7684\u4e3b\u8981\u7ed3\u6784\u662f\u57fa\u4e8eFeistel\u7f51\u7edc\uff0c\u8fd9\u662f\u4e00\u79cd\u5c06\u6570\u636e\u5757\u5206\u4e3a\u5de6\u53f3\u4e24\u90e8\u5206\uff0c\u7136\u540e\u8fdb\u884c\u4ea4\u53c9\u5904\u7406\u7684\u65b9\u6cd5\u3002Feistel\u7ed3\u6784\u7684\u4e3b\u8981\u4f18\u52bf\u5728\u4e8e\u52a0\u5bc6\u4e0e\u89e3\u5bc6\u8fc7\u7a0b\u975e\u5e38\u76f8\u4f3c\uff0c\u4ec5\u5bc6\u94a5\u7684\u4f7f\u7528\u987a\u5e8f\u76f8\u53cd\uff0c\u8fd9\u5927\u5927\u7b80\u5316\u4e86\u7b97\u6cd5\u7684\u5b9e\u73b0\u3002<\/p>\n<\/p>\n

\u9996\u5148\uff0c\u8f93\u5165\u768464\u4f4d\u6570\u636e\u901a\u8fc7\u4e00\u4e2a\u521d\u59cb\u7f6e\u6362\uff08IP\uff09\u8fdb\u884c\u9884\u5904\u7406\uff0c\u8fd9\u4e2a\u7f6e\u6362\u6ca1\u6709\u63d0\u4f9b\u4efb\u4f55\u5b89\u5168\u6027\uff0c\u800c\u662f\u4e3a\u4e86\u540e\u7eed\u5904\u7406\u65b9\u4fbf\u8bbe\u8ba1\u7684\u3002\u7136\u540e\uff0c\u6b64\u6570\u636e\u5757\u5206\u4e3a\u5de6\u53f3\u4e24\u90e8\u5206\uff0c\u8fdb\u516516\u8f6e\u7684\u8fed\u4ee3\u5904\u7406\u3002<\/p>\n<\/p>\n

\u6bcf\u8f6e\u8fed\u4ee3\u4e2d\uff0c\u53f3\u534a\u90e8\u5206\u7ecf\u8fc7\u4e00\u4e2a\u6269\u5c55\u7f6e\u6362\uff0c\u5c06\u5176\u4ece32\u4f4d\u62d3\u5c55\u523048\u4f4d\uff0c\u4ee5\u4fbf\u4e0e48\u4f4d\u7684\u5b50\u5bc6\u94a5\u8fdb\u884c\u5f02\u6216\u64cd\u4f5c\u3002\u7136\u540e\uff0c\u7ed3\u679c\u4f1a\u901a\u8fc7S\u76d2\u8fdb\u884c\u66ff\u6362\uff0c\u6700\u540e\u901a\u8fc7\u4e00\u4e2aP\u76d2\u8fdb\u884c\u7f6e\u6362\uff0c\u4ea7\u751f\u672c\u8f6e\u7684\u8f93\u51fa\uff0c\u4f5c\u4e3a\u4e0b\u4e00\u8f6e\u8fed\u4ee3\u7684\u8f93\u5165\u4e4b\u4e00\u3002<\/p>\n<\/p>\n

\u4e8c\u3001S\u76d2\u7684\u4f5c\u7528<\/h2>\n<\/p>\n

S\u76d2\uff08Substitution-boxes\uff09\u662fDES\u7b97\u6cd5\u4e2d\u5b9e\u73b0\u66ff\u6362\u539f\u5219\u7684\u6838\u5fc3\u90e8\u5206\u3002\u901a\u8fc7\u5c066\u4f4d\u8f93\u5165\u6620\u5c04\u52304\u4f4d\u8f93\u51fa\uff0cS\u76d2\u589e\u52a0\u4e86\u7b97\u6cd5\u7684\u975e\u7ebf\u6027\u5173\u7cfb\uff0c\u6781\u5927\u5730\u589e\u5f3a\u4e86\u5bf9\u6297\u5dee\u5206\u653b\u51fb\u548c\u7ebf\u6027\u653b\u51fb\u7684\u80fd\u529b\u3002<\/p>\n<\/p>\n

S\u76d2\u5de5\u4f5c\u539f\u7406\u662f\uff0c\u9996\u5148\u5c06\u6269\u5c55\u7f6e\u6362\u540e\u5f97\u5230\u768448\u4f4d\u6570\u636e\u5206\u62108\u7ec4\uff0c\u6bcf\u7ec46\u4f4d\u3002\u6bcf\u7ec4\u6570\u636e\u7684\u9996\u5c3e\u4e24\u4f4d\u51b3\u5b9a\u57284\u884c\u4e2d\u7684\u4f4d\u7f6e\uff0c\u5176\u4f594\u4f4d\u51b3\u5b9a\u572816\u5217\u4e2d\u7684\u4f4d\u7f6e\uff0c\u901a\u8fc7\u67e5\u8be2\u9884\u5148\u5b9a\u4e49\u7684S\u76d2\u8868\uff0c\u5f97\u52304\u4f4d\u8f93\u51fa\u3002\u8fd9\u4e00\u8fc7\u7a0b\u786e\u4fdd\u4e86\u5373\u4f7f\u8f93\u5165\u6570\u636e\u975e\u5e38\u63a5\u8fd1\uff0c\u8f93\u51fa\u6570\u636e\u4e5f\u4f1a\u76f8\u5dee\u5f88\u5927\uff0c\u4ece\u800c\u5b9e\u73b0\u4e86\u52a0\u5bc6\u8fc7\u7a0b\u7684\u201c\u6269\u6563\u201d\u6548\u679c\u3002<\/p>\n<\/p>\n

\u4e09\u3001\u5bc6\u94a5\u8c03\u5ea6\u7b97\u6cd5<\/h2>\n<\/p>\n

\u5bc6\u94a5\u8c03\u5ea6\u7b97\u6cd5\u7684\u4f5c\u7528\u662f\u751f\u621016\u8f6e\u8fed\u4ee3\u6240\u9700\u7684\u5b50\u5bc6\u94a5\u3002\u5b83\u9996\u5148\u5c0664\u4f4d\u7684\u4e3b\u5bc6\u94a5\u901a\u8fc7\u4e00\u4e2a\u7f6e\u6362PC-1\u8f6c\u6362\u4e3a56\u4f4d\uff0c\u53bb\u9664\u4e868\u4f4d\u5947\u5076\u6821\u9a8c\u4f4d\u3002\u7136\u540e\uff0c\u6bcf\u8fdb\u884c\u4e00\u8f6e\u8fed\u4ee3\uff0c56\u4f4d\u88ab\u5206\u4e3a\u5de6\u53f3\u4e24\u90e8\u5206\uff0c\u5404\u81ea\u8fdb\u884c\u5faa\u73af\u5de6\u79fb\uff0c\u79fb\u4f4d\u7684\u6570\u91cf\u6839\u636e\u8f6e\u6570\u56fa\u5b9a\u3002\u6700\u540e\u901a\u8fc7\u7f6e\u6362PC-2\u4ece56\u4f4d\u4e2d\u9009\u51fa48\u4f4d\u4f5c\u4e3a\u672c\u8f6e\u7684\u5b50\u5bc6\u94a5\u3002<\/p>\n<\/p>\n

\u8fd9\u4e2a\u8fc7\u7a0b\u786e\u4fdd\u4e86\u6bcf\u8f6e\u4f7f\u7528\u7684\u5b50\u5bc6\u94a5\u90fd\u4e0d\u540c\uff0c\u589e\u52a0\u4e86\u7b97\u6cd5\u7684\u590d\u6742\u5ea6\u3002\u540c\u65f6\uff0c\u7531\u4e8e\u5bc6\u94a5\u8c03\u5ea6\u7684\u8fc7\u7a0b\u4e2d\u5f15\u5165\u4e86\u79fb\u4f4d\u64cd\u4f5c\uff0c\u8fd9\u589e\u52a0\u4e86\u5b50\u5bc6\u94a5\u4e4b\u95f4\u7684\u5dee\u5f02\uff0c\u63d0\u9ad8\u4e86\u5b89\u5168\u6027\u3002<\/p>\n<\/p>\n

\u56db\u3001\u52a0\u5bc6\u4e0e\u89e3\u5bc6\u8fc7\u7a0b<\/h2>\n<\/p>\n

\u5c3d\u7ba1\u52a0\u5bc6\u548c\u89e3\u5bc6\u8fc7\u7a0b\u5728\u6b65\u9aa4\u4e0a\u76f8\u4f3c\uff0c\u4f46\u4f7f\u7528\u7684\u5b50\u5bc6\u94a5\u987a\u5e8f\u76f8\u53cd\u3002\u5728\u52a0\u5bc6\u8fc7\u7a0b\u4e2d\uff0c\u9996\u5148\u6267\u884c\u521d\u59cb\u7f6e\u6362\uff0c\u7136\u540e\u8fdb\u516516\u8f6e\u7684\u8fed\u4ee3\u8fc7\u7a0b\uff0c\u6700\u540e\u6267\u884c\u4e00\u4e2a\u7ec8\u7ed3\u7f6e\u6362\uff08IP^-1\uff09\u5f97\u5230\u52a0\u5bc6\u7ed3\u679c\u3002\u89e3\u5bc6\u8fc7\u7a0b\u5219\u5c06\u52a0\u5bc6\u8fc7\u7a0b\u53cd\u5411\u6267\u884c\uff0c\u9996\u5148\u4f7f\u7528\u7ec8\u7ed3\u7f6e\u6362\uff0c\u8fdb\u516516\u8f6e\u8fed\u4ee3\uff08\u5b50\u5bc6\u94a5\u4f7f\u7528\u987a\u5e8f\u76f8\u53cd\uff09\uff0c\u6700\u540e\u6267\u884c\u521d\u59cb\u7f6e\u6362\u5f97\u5230\u539f\u59cb\u6570\u636e\u3002<\/p>\n<\/p>\n

\u8fd9\u79cd\u8bbe\u8ba1\u4e0d\u4ec5\u4fdd\u8bc1\u4e86\u52a0\u5bc6\u7684\u5f3a\u5ea6\uff0c\u540c\u65f6\u4e5f\u7b80\u5316\u4e86\u7b97\u6cd5\u7684\u5b9e\u73b0\uff0c\u56e0\u4e3a\u52a0\u5bc6\u548c\u89e3\u5bc6\u8fc7\u7a0b\u975e\u5e38\u7c7b\u4f3c\uff0c\u53ea\u662f\u5b50\u5bc6\u94a5\u7684\u5e94\u7528\u987a\u5e8f\u76f8\u53cd\u3002<\/p>\n<\/p>\n

\u4e94\u3001\u5b89\u5168\u6027\u5206\u6790<\/h2>\n<\/p>\n

DES\u7b97\u6cd5\u81ea1977\u5e74\u88ab\u6b63\u5f0f\u91c7\u7528\u4ee5\u6765\uff0c\u66fe\u662f\u6700\u5e7f\u6cdb\u4f7f\u7528\u7684\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u3002\u867d\u7136\u73b0\u5728\u5df2\u7ecf\u88ab\u8ba4\u4e3a\u4e0d\u591f\u5b89\u5168\uff0c\u4e3b\u8981\u56e0\u4e3a\u517664\u4f4d\u7684\u5bc6\u94a5\u957f\u5ea6\u5728\u73b0\u4ee3\u8ba1\u7b97\u673a\u9762\u524d\u5df2\u7ecf\u4e0d\u591f\u7528\uff0c\u5bb9\u6613\u88ab\u7a77\u4e3e\u653b\u51fb\u3002\u4f46DES\u7b97\u6cd5\u7684\u8bbe\u8ba1\u601d\u8def\u2014\u2014\u7279\u522b\u662f\u7f6e\u6362\u3001\u66ff\u6362\u548c\u8fed\u4ee3\u8fd9\u4e09\u5927\u6838\u5fc3\u539f\u5219\u2014\u2014\u5bf9\u540e\u7eed\u52a0\u5bc6\u7b97\u6cd5\u7684\u53d1\u5c55\u4ea7\u751f\u4e86\u6df1\u8fdc\u5f71\u54cd\u3002<\/p>\n<\/p>\n

3DES\uff08\u6216\u79f0\u4e3aTriple DES\uff09\u901a\u8fc7\u591a\u6b21\u5e94\u7528DES\u7b97\u6cd5\u6765\u589e\u52a0\u52a0\u5bc6\u7684\u5f3a\u5ea6\uff0c\u6b63\u662f\u5bf9DES\u5b89\u5168\u6027\u7684\u4e00\u79cd\u6539\u8fdb\u3002\u7136\u800c\uff0c\u968f\u7740\u8ba1\u7b97\u80fd\u529b\u7684\u4e0d\u65ad\u589e\u5f3a\u548c\u66f4\u52a0\u9ad8\u6548\u7684\u52a0\u5bc6\u7b97\u6cd5\uff08\u5982AES\uff09\u7684\u51fa\u73b0\uff0cDES\u548c3DES\u5728\u5b89\u5168\u6027\u548c\u6548\u7387\u4e0a\u90fd\u9010\u6e10\u4e0d\u88ab\u63a8\u8350\u4f7f\u7528\u3002<\/p>\n<\/p>\n

\u603b\u4e4b\uff0cDES\u7b97\u6cd5\u5728\u5bc6\u7801\u5b66\u5386\u53f2\u4e0a\u626e\u6f14\u4e86\u91cd\u8981\u89d2\u8272\uff0c\u5176\u8bbe\u8ba1\u601d\u8def\u548c\u7ed3\u6784\u81f3\u4eca\u4ecd\u5bf9\u52a0\u5bc6\u6280\u672f\u7684\u53d1\u5c55\u6709\u7740\u91cd\u8981\u5f71\u54cd\u3002<\/p>\n<\/p>\n

\u76f8\u5173\u95ee\u7b54FAQs\uff1a<\/strong><\/h2>\n

1. DES\u7b97\u6cd5\u662f\u57fa\u4e8e\u4ec0\u4e48\u6837\u7684\u8bbe\u8ba1\u601d\u8def\u521b\u5efa\u7684\uff1f<\/strong><\/p>\n

DES\u7b97\u6cd5\u662f\u57fa\u4e8e\u5206\u7ec4\u5bc6\u7801\u7684\u8bbe\u8ba1\u601d\u8def\u521b\u5efa\u7684\u3002\u5b83\u5c06\u660e\u6587\u6309\u7167\u7279\u5b9a\u7684\u5206\u7ec4\u957f\u5ea6\u8fdb\u884c\u5206\u7ec4\uff0c\u7136\u540e\u5c06\u6bcf\u4e2a\u5206\u7ec4\u8fdb\u884c\u4e00\u7cfb\u5217\u7684\u52a0\u5bc6\u8fd0\u7b97\uff0c\u6700\u7ec8\u751f\u6210\u5bc6\u6587\u3002<\/p>\n

2. DES\u7b97\u6cd5\u7684\u5177\u4f53\u8bbe\u8ba1\u601d\u8def\u662f\u4ec0\u4e48\uff1f<\/strong><\/p>\n

DES\u7b97\u6cd5\u91c7\u7528\u4e86 Feistel \u7f51\u7edc\u7ed3\u6784\uff0c\u8be5\u7ed3\u6784\u4f7f\u5f97\u52a0\u5bc6\u548c\u89e3\u5bc6\u7684\u8fc7\u7a0b\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u7b97\u6cd5\u3002\u7b97\u6cd5\u7684\u4e3b\u8981\u601d\u8def\u662f\u901a\u8fc7\u53cd\u590d\u6267\u884c\u4ee3\u6362\u548c\u7f6e\u6362\u64cd\u4f5c\uff0c\u5c06\u8f93\u5165\u7684\u660e\u6587\u8f6c\u6362\u4e3a\u957f\u5ea6\u76f8\u540c\u7684\u5bc6\u6587\u3002<\/p>\n

\u5177\u4f53\u6765\u8bf4\uff0cDES\u7b97\u6cd5\u5305\u62ec\u4e86\u521d\u59cb\u7f6e\u6362(IP)\u3001Feistel\u8fd0\u7b97\u3001\u53cd\u7f6e\u6362(IP^-1)\u8fd9\u4e9b\u6b65\u9aa4\u3002\u6bcf\u8f6eFeistel\u8fd0\u7b97\u5305\u62ec\u5bc6\u94a5\u7684\u751f\u6210\u3001\u660e\u6587\u7684\u6269\u5c55\u3001\u5bc6\u94a5\u4e0e\u660e\u6587\u7684\u5f02\u6216\u8fd0\u7b97\u3001S\u76d2\u66ff\u6362\u3001\u7f6e\u6362\u4ee5\u53ca\u5faa\u73af\u5de6\u79fb\u7b49\u6b65\u9aa4\u3002<\/p>\n

3. DES\u7b97\u6cd5\u7684\u8bbe\u8ba1\u601d\u8def\u6709\u4ec0\u4e48\u4f18\u52bf\uff1f<\/strong><\/p>\n

DES\u7b97\u6cd5\u7684\u8bbe\u8ba1\u601d\u8def\u5177\u6709\u4ee5\u4e0b\u4f18\u52bf\uff1a<\/p>\n

    \n
  • \u7ecf\u8fc7\u591a\u8f6e\u8fed\u4ee3\u52a0\u5bc6\uff0c\u63d0\u9ad8\u4e86\u5bc6\u7801\u7b97\u6cd5\u7684\u5b89\u5168\u6027\uff0c\u5bf9\u6297\u4e86\u5404\u79cd\u5e38\u89c1\u7684\u653b\u51fb\u65b9\u5f0f\uff0c\u5982\u5dee\u5206\u653b\u51fb\u3001\u7ebf\u6027\u653b\u51fb\u7b49\u3002<\/li>\n
  • \u53ef\u4ee5\u901a\u8fc7\u6539\u53d8\u5bc6\u94a5\u6765\u8fdb\u884c\u4e0d\u540c\u7684\u52a0\u5bc6\u3002\u4e00\u4e2a\u597d\u7684\u5bc6\u94a5\u53ef\u4ee5\u5927\u5927\u63d0\u9ad8\u52a0\u5bc6\u7684\u5b89\u5168\u6027\u3002<\/li>\n
  • DES\u7b97\u6cd5\u7684\u8bbe\u8ba1\u975e\u5e38\u7075\u6d3b\uff0c\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u5e94\u7528\u9700\u6c42\u8fdb\u884c\u8c03\u6574\uff0c\u4f8b\u5982\u8c03\u6574\u52a0\u5bc6\u8f6e\u6570\u3001\u8c03\u6574\u5bc6\u94a5\u957f\u5ea6\u3002<\/li>\n<\/ul>\n

    \u603b\u4e4b\uff0cDES\u7b97\u6cd5\u7684\u8bbe\u8ba1\u601d\u8def\u8003\u8651\u4e86\u5b89\u5168\u6027\u548c\u529f\u80fd\u6027\u7684\u5e73\u8861\uff0c\u4f7f\u5f97\u5b83\u6210\u4e3a\u4e86\u4e00\u79cd\u88ab\u5e7f\u6cdb\u5e94\u7528\u7684\u52a0\u5bc6\u7b97\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"DES\uff08\u6570\u636e\u52a0\u5bc6\u6807\u51c6\uff09\u7b97\u6cd5\u7684\u8bbe\u8ba1\u601d\u8def\u4e3b\u8981\u57fa\u4e8e\u7f6e\u6362\uff08Permutation\uff09\u3001\u66ff\u6362\uff08Substitution\uff09\u3001 […]","protected":false},"author":3,"featured_media":199377,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[37],"tags":[],"acf":[],"_links":{"self":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/199366"}],"collection":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/users\/3"}],"replies":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/comments?post=199366"}],"version-history":[{"count":0,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/posts\/199366\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media\/199377"}],"wp:attachment":[{"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/media?parent=199366"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/categories?post=199366"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/docs.pingcode.com\/wp-json\/wp\/v2\/tags?post=199366"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}