{"id":72,"date":"2015-07-31T15:18:45","date_gmt":"2015-07-31T07:18:45","guid":{"rendered":"http:\/\/dachengge.com\/?p=72"},"modified":"2015-07-31T15:18:45","modified_gmt":"2015-07-31T07:18:45","slug":"%e5%8a%a0%e5%af%86%e7%ae%97%e6%b3%95%e6%b1%87%e6%80%bb%e5%8f%8a%e7%a4%ba%e4%be%8b","status":"publish","type":"post","link":"http:\/\/dachengge.com\/?p=72","title":{"rendered":"\u52a0\u5bc6\u7b97\u6cd5\u6c47\u603b\u53ca\u793a\u4f8b"},"content":{"rendered":"

\u5e73\u65f6\u5de5\u4f5c\u603b\u662f\u8981\u767b\u9646\u5404\u79cd\u7cfb\u7edf\uff0c\u5c11\u4e0d\u4e86\u4f7f\u7528\u5bc6\u94a5\uff0c\u4e5f\u5c31\u662f\u4f18\u76fe\uff0c\u4e00\u76f4\u597d\u5947\u4f18\u76fe\u662f\u600e\u4e48\u5b9e\u73b0\u7528\u6237\u8eab\u4efd\u9a8c\u8bc1\u7684\uff0c\u7ecf\u8fc7\u4e00\u6bb5\u65f6\u95f4\u7684\u7814\u7a76\uff0c\u7ec8\u4e8e\u5bf9\u8ba1\u7b97\u673a\u7684\u6458\u8981\u3001\u52a0\u5bc6\u7b97\u6cd5\u6709\u4e86\u4e00\u5b9a\u4e86\u89e3\uff0c\u73b0\u5728\u628a\u8fd9\u4e9b\u77e5\u8bc6\u5206\u4eab\u7ed9\u5927\u5bb6\uff0c\u793a\u4f8b\u4ee5openssl\u7a0b\u5e8f\u4e3a\u4f8b\uff1a<\/span>
\n1 \u00a0\u00a0\u6458\u8981\u7b97\u6cd5<\/span><\/strong>
\n\u6570\u636e\u6458\u8981\u7b97\u6cd5\u662f\u5bc6\u7801\u5b66\u7b97\u6cd5\u4e2d\u975e\u5e38\u91cd\u8981\u7684\u4e00\u4e2a\u5206\u652f\uff0c\u5b83\u901a\u8fc7\u5bf9\u6240\u6709\u6570\u636e\u63d0\u53d6\u6307\u7eb9\u4fe1\u606f\u4ee5\u5b9e\u73b0\u6570\u636e\u7b7e\u540d\u3001\u6570\u636e\u5b8c\u6574\u6027\u6821\u9a8c\u7b49\u529f\u80fd\uff0c\u7531\u4e8e\u5176\u4e0d\u53ef\u9006\u6027\uff0c\u6709\u65f6\u5019\u4f1a\u88ab\u7528\u505a\u654f\u611f\u4fe1\u606f\u7684\u52a0\u5bc6\u3002\u6570\u636e\u6458\u8981\u7b97\u6cd5\u4e5f\u88ab\u79f0\u4e3a\u54c8\u5e0c\uff08Hash\uff09\u7b97\u6cd5\u3001\u6563\u5217\u7b97\u6cd5\u3002\u7b80\u5355\u70b9\u8bf4\uff0c\u6458\u8981\u7b97\u6cd5\u5bf9\u4e00\u6bb5\u6587\u5b57\u6216\u6587\u4ef6\u4ea7\u751f\u4e00\u4e2a\u56fa\u5b9a\u957f\u5ea6\uff08\u5e38\u89c1\u7684md5\u957f\u5ea6\u4f4d16\u621632\u4f4d\u5b57\u7b26\u4e32\uff09\u6458\u8981\u7684\u7b97\u6cd5\uff0c\u800c\u4e14\u65e0\u6cd5\u901a\u8fc7\u9006\u5411\u8fd0\u7b97\u5f97\u5230\u539f\u6587\u4fe1\u606f\uff0c\u6700\u5e38\u89c1\u7684\u7528\u5904\u6709\u5bc6\u7801\u52a0\u5bc6\uff0c\u73b0\u5728\u7f51\u7ad9\u4fdd\u5b58\u7684\u7528\u6237\u5bc6\u7801\u90fd\u662f\u4e00\u6bb5\u5bc6\u7801\u7684\u6458\u8981\uff0c\u7528\u6237\u8f93\u5165\u5bc6\u7801\u65f6\u5c06\u5bc6\u7801\u751f\u6210\u6458\u8981\uff0c\u7136\u540e\u548c\u6570\u636e\u5e93\u4e2d\u7684\u6458\u8981\u8fdb\u884c\u5bf9\u6bd4\u5224\u65ad\u5bc6\u7801\u662f\u5426\u51c6\u786e\u3002\u8fd9\u4e5f\u5c31\u662f\u7528\u6237\u5fd8\u8bb0\u5bc6\u7801\u65f6\u53ea\u80fd\u91cd\u7f6e\u5bc6\u7801\uff0c\u800c\u65e0\u6cd5\u5f97\u5230\u539f\u5bc6\u7801\u7684\u539f\u56e0\uff0c\u56e0\u4e3a\u7f51\u7ad9\u4e5f\u4e0d\u77e5\u9053\u3002\u53e6\u5916\u4e00\u4e2a\u5e38\u89c1\u7528\u9014\u5c31\u662f\u6587\u4ef6\u7684\u6821\u9a8c\uff0c\u6bcf\u5f53\u4e0b\u8f7d\u7a0b\u5e8f\u65f6\uff0c\u540c\u65f6\u4f1a\u5305\u542b\u4e00\u4e2a.md5\u540e\u7f00\u7684\u6587\u4ef6\uff0c\u7528\u6237\u53ef\u4ee5\u901a\u8fc7\u5bf9\u7a0b\u5e8f\u4ea7\u751fmd5\u6458\u8981\uff0c\u548c\u4e0b\u8f7d\u7684md5\u6458\u8981\u8fdb\u884c\u5bf9\u6bd4\u4ee5\u786e\u5b9a\u6587\u4ef6\u6ca1\u6709\u88ab\u7be1\u6539\u3002\u5e38\u89c1\u7684\u6458\u8981\u7b97\u6cd5\u6709\uff1a<\/span>
\n1.1 \u00a0\u00a0CRC8\u3001CRC16\u3001CRC32<\/strong>
\nCRC\uff08Cyclic Redundancy Check\uff0c\u5faa\u73af\u5197\u4f59\u6821\u9a8c\uff09\u7b97\u6cd5\u51fa\u73b0\u65f6\u95f4\u8f83\u957f\uff0c\u5e94\u7528\u4e5f\u5341\u5206\u5e7f\u6cdb\uff0c\u5c24\u5176\u662f\u901a\u8baf\u9886\u57df\uff0c\u73b0\u5728\u5e94\u7528\u6700\u591a\u7684\u5c31\u662f CRC32 \u7b97\u6cd5\uff0c\u5b83\u4ea7\u751f\u4e00\u4e2a4\u5b57\u8282\uff0832\u4f4d\uff09\u7684\u6821\u9a8c\u503c\uff0c\u4e00\u822c\u662f\u4ee58\u4f4d\u5341\u516d\u8fdb\u5236\u6570\uff0c\u5982FA 12 CD 45\u7b49\u3002CRC\u7b97\u6cd5\u7684\u4f18\u70b9\u5728\u4e8e\u7b80\u4fbf\u3001\u901f\u5ea6\u5feb\uff0c\u4e25\u683c\u7684\u6765\u8bf4\uff0cCRC\u66f4\u5e94\u8be5\u88ab\u79f0\u4e3a\u6570\u636e\u6821\u9a8c\u7b97\u6cd5\uff0c\u4f46\u5176\u529f\u80fd\u4e0e\u6570\u636e\u6458\u8981\u7b97\u6cd5\u7c7b\u4f3c\uff0c\u56e0\u6b64\u4e5f\u4f5c\u4e3a\u6d4b\u8bd5\u7684\u53ef\u9009\u7b97\u6cd5\u3002
\n1.2 \u00a0\u00a0MD2 \u3001MD4\u3001MD5<\/strong>
\n\u8fd9\u662f\u5e94\u7528\u975e\u5e38\u5e7f\u6cdb\u7684\u4e00\u4e2a\u7b97\u6cd5\u5bb6\u65cf\uff0c\u5c24\u5176\u662f MD5\uff08Message-Digest Algorithm 5\uff0c\u6d88\u606f\u6458\u8981\u7b97\u6cd5\u7248\u672c5\uff09\uff0c\u5b83\u7531MD2\u3001MD3\u3001MD4\u53d1\u5c55\u800c\u6765\uff0c\u7531Ron Rivest\uff08RSA\u516c\u53f8\uff09\u57281992\u5e74\u63d0\u51fa\uff0c\u88ab\u5e7f\u6cdb\u5e94\u7528\u4e8e\u6570\u636e\u5b8c\u6574\u6027\u6821\u9a8c\u3001\u6570\u636e\uff08\u6d88\u606f\uff09\u6458\u8981\u3001\u6570\u636e\u52a0\u5bc6\u7b49\u3002MD2\u3001MD4\u3001MD5 \u90fd\u4ea7\u751f16\u5b57\u8282\uff08128\u4f4d\uff09\u7684\u6821\u9a8c\u503c\uff0c\u4e00\u822c\u752832\u4f4d\u5341\u516d\u8fdb\u5236\u6570\u8868\u793a\u3002MD2\u7684\u7b97\u6cd5\u8f83\u6162\u4f46\u76f8\u5bf9\u5b89\u5168\uff0cMD4\u901f\u5ea6\u5f88\u5feb\uff0c\u4f46\u5b89\u5168\u6027\u4e0b\u964d\uff0cMD5\u6bd4MD4\u66f4\u5b89\u5168\u3001\u901f\u5ea6\u66f4\u5feb\u3002
\nmd5\u751f\u6210\u6458\u8981\u793a\u4f8b\uff1a
\n[Alex@localhost Desktop]$ cat test.txt
\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
\nsdfffffsssssssssssssssssssssssssssssss
\n[Alex@localhost Desktop]$ openssl dgst -md5 test.txt
\nMD5(test.txt)= f06688b25e76a6194a41c725bb156468
\n1.3 \u00a0\u00a0SHA1\u3001SHA256\u3001SHA384\u3001SHA512<\/strong>
\nSHA\uff08Secure Hash Algorithm\uff09\u662f\u7531\u7f8e\u56fd\u4e13\u95e8\u5236\u5b9a\u5bc6\u7801\u7b97\u6cd5\u7684\u6807\u51c6\u673a\u6784\u2014\u2014 \u7f8e\u56fd\u56fd\u5bb6\u6807\u51c6\u6280\u672f\u7814\u7a76\u9662\uff08NIST\uff09\u5236\u5b9a\u7684\uff0cSHA\u7cfb\u5217\u7b97\u6cd5\u7684\u6458\u8981\u957f\u5ea6\u5206\u522b\u4e3a\uff1aSHA\u4e3a20\u5b57\u8282\uff08160\u4f4d\uff09\u3001SHA256\u4e3a32\u5b57\u8282\uff08256\u4f4d\uff09\u3001 SHA384\u4e3a48\u5b57\u8282\uff08384\u4f4d\uff09\u3001SHA512\u4e3a64\u5b57\u8282\uff08512\u4f4d\uff09\uff0c\u7531\u4e8e\u5b83\u4ea7\u751f\u7684\u6570\u636e\u6458\u8981\u7684\u957f\u5ea6\u66f4\u957f\uff0c\u56e0\u6b64\u66f4\u96be\u4ee5\u53d1\u751f\u78b0\u649e\uff0c\u56e0\u6b64\u4e5f\u66f4\u4e3a\u5b89\u5168\uff0c\u5b83\u662f\u672a\u6765\u6570\u636e\u6458\u8981\u7b97\u6cd5\u7684\u53d1\u5c55\u65b9\u5411\u3002\u7531\u4e8eSHA\u7cfb\u5217\u7b97\u6cd5\u7684\u6570\u636e\u6458\u8981\u957f\u5ea6\u8f83\u957f\uff0c\u56e0\u6b64\u5176\u8fd0\u7b97\u901f\u5ea6\u4e0eMD5\u76f8\u6bd4\uff0c\u4e5f\u76f8\u5bf9\u8f83\u6162\u3002
\nSHA1\u7684\u5e94\u7528\u8f83\u4e3a\u5e7f\u6cdb\uff0c\u4e3b\u8981\u5e94\u7528\u4e8eCA\u548c\u6570\u5b57\u8bc1\u4e66\u4e2d\uff0c\u53e6\u5916\u5728\u4e92\u8054\u7f51\u4e2d\u6d41\u884c\u7684BT\u8f6f\u4ef6\u4e2d\uff0c\u4e5f\u662f\u4f7f\u7528SHA1\u6765\u8fdb\u884c\u6587\u4ef6\u6821\u9a8c\u7684\u3002
\nsha\u751f\u6210\u6458\u8981\u793a\u4f8b\uff1a
\n[Alex@localhost Desktop]$ cat test.txt
\naaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
\nsdfffffsssssssssssssssssssssssssssssss
\n[Alex@localhost Desktop]$ openssl dgst -sha test.txt
\nSHA(test.txt)= d2ad4b7440522b358cfd0f56f0f3fbb4000354b4
\n1.4 \u00a0\u00a0RIPEMD\u3001PANAMA\u3001TIGER\u3001ADLER32 \u7b49<\/strong>
\n2 \u00a0\u00a0\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5<\/strong>
\n\u5bf9\u79f0\u52a0\u5bc6\u6307\u52a0\u5bc6\u548c\u89e3\u5bc6\u4f7f\u7528\u76f8\u540c\u5bc6\u94a5\u7684\u52a0\u5bc6\u7b97\u6cd5\uff0c\u6709\u65f6\u53c8\u53eb\u4f20\u7edf\u5bc6\u7801\u7b97\u6cd5\u800c\u5728\u5927\u591a\u6570\u7684\u5bf9\u79f0\u7b97\u6cd5\u4e2d\uff0c\u52a0\u5bc6\u5bc6\u94a5\u548c\u89e3\u5bc6\u5bc6\u94a5\u662f\u76f8\u540c\u7684\uff0c\u6240\u4ee5\u4e5f\u79f0\u8fd9\u79cd\u52a0\u5bc6\u7b97\u6cd5\u4e3a\u79d8\u5bc6\u5bc6\u94a5\u7b97\u6cd5\u6216\u5355\u5bc6\u94a5\u7b97\u6cd5\u3002\u5b83\u8981\u6c42\u53d1\u9001\u65b9\u548c\u63a5\u6536\u65b9\u5728\u5b89\u5168\u901a\u4fe1\u4e4b\u524d\uff0c\u5546\u5b9a\u4e00\u4e2a\u5bc6\u94a5\u3002\u5bf9\u79f0\u7b97\u6cd5\u7684\u5b89\u5168\u6027\u4f9d\u8d56\u4e8e\u5bc6\u94a5\uff0c\u6cc4\u6f0f\u5bc6\u94a5\u5c31\u610f\u5473\u7740\u4efb\u4f55\u4eba\u90fd\u53ef\u4ee5\u5bf9\u4ed6\u4eec\u53d1\u9001\u6216\u63a5\u6536\u7684\u6d88\u606f\u89e3\u5bc6\uff0c\u6240\u4ee5\u5bc6\u94a5\u7684\u4fdd\u5bc6\u6027\u5bf9\u901a\u4fe1\u6027\u81f3\u5173\u91cd\u8981\u3002\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u7684\u4f18\u70b9\u662f\u7b97\u6cd5\u516c\u5f00\u3001\u8ba1\u7b97\u91cf\u5c0f\u3001\u52a0\u5bc6\u901f\u5ea6\u5feb\u3001\u52a0\u5bc6\u6548\u7387\u9ad8\u3002\u5e38\u89c1\u7684\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u6709\uff1a
\n2.1 \u00a0\u00a0DES<\/strong>
\nDES\u5168\u79f0\u4e3aData Encryption Standard\uff0c\u5373\u6570\u636e\u52a0\u5bc6\u6807\u51c6\uff0c\u662f\u4e00\u79cd\u4f7f\u7528\u5bc6\u94a5\u52a0\u5bc6\u7684\u5757\u7b97\u6cd5\uff0c1976\u5e74\u88ab\u7f8e\u56fd\u8054\u90a6\u653f\u5e9c\u7684\u56fd\u5bb6\u6807\u51c6\u5c40\u786e\u5b9a\u4e3a\u8054\u90a6\u8d44\u6599\u5904\u7406\u6807\u51c6\uff08FIPS\uff09\uff0c\u968f\u540e\u5728\u56fd\u9645\u4e0a\u5e7f\u6cdb\u6d41\u4f20\u5f00\u6765\u3002DES\u7b97\u6cd5\u7684\u5165\u53e3\u53c2\u6570\u6709\u4e09\u4e2a:Key\u3001Data\u3001Mode\u3002\u5176\u4e2dKey\u4e3a7\u4e2a\u5b57\u8282\u517156\u4f4d,\u662fDES\u7b97\u6cd5\u7684\u5de5\u4f5c\u5bc6\u94a5;Data\u4e3a8\u4e2a\u5b57\u828264\u4f4d,\u662f\u8981\u88ab\u52a0\u5bc6\u6216\u88ab\u89e3\u5bc6\u7684\u6570\u636e;Mode\u4e3aDES\u7684\u5de5\u4f5c\u65b9\u5f0f,\u6709\u4e24\u79cd:\u52a0\u5bc6\u6216\u89e3\u5bc6\u3002
\nDES\u793a\u4f8b\uff1a
\n[Alex@localhost Desktop]$ openssl enc -des -in test.txt -out test.out
\n2.2 \u00a0 3DES<\/strong>
\n3DES\uff08\u6216\u79f0\u4e3aTriple DES\uff09\u662f\u4e09\u91cd\u6570\u636e\u52a0\u5bc6\u7b97\u6cd5\uff08TDEA\uff0cTriple Data Encryption Algorithm\uff09\u5757\u5bc6\u7801\u7684\u901a\u79f0\u3002\u5b83\u76f8\u5f53\u4e8e\u662f\u5bf9\u6bcf\u4e2a\u6570\u636e\u5757\u5e94\u7528\u4e09\u6b21DES\u52a0\u5bc6\u7b97\u6cd5\u3002\u7531\u4e8e\u8ba1\u7b97\u673a\u8fd0\u7b97\u80fd\u529b\u7684\u589e\u5f3a\uff0c\u539f\u7248DES\u5bc6\u7801\u7684\u5bc6\u94a5\u957f\u5ea6\u53d8\u5f97\u5bb9\u6613\u88ab\u66b4\u529b\u7834\u89e3\uff1b3DES\u5373\u662f\u8bbe\u8ba1\u7528\u6765\u63d0\u4f9b\u4e00\u79cd\u76f8\u5bf9\u7b80\u5355\u7684\u65b9\u6cd5\uff0c\u5373\u901a\u8fc7\u589e\u52a0DES\u7684\u5bc6\u94a5\u957f\u5ea6\u6765\u907f\u514d\u7c7b\u4f3c\u7684\u653b\u51fb\uff0c\u800c\u4e0d\u662f\u8bbe\u8ba1\u4e00\u79cd\u5168\u65b0\u7684\u5757\u5bc6\u7801\u7b97\u6cd5\u3002
\n2.3 \u00a0 BlowFish\u7b97\u6cd5\u7528\u6765\u52a0\u5bc664Bit\u957f\u5ea6\u7684\u5b57\u7b26\u4e32\u3002<\/strong>
\nBlowFish \u793a\u4f8b\uff1a
\n[Alex@localhost Desktop]$ openssl enc -bf -in test.txt -out test.out
\n2.4 \u00a0\u00a0IDEA<\/strong>
\nIDEA\u662fInternational Data Encryption Algorithm \u7684\u7f29\u5199,\u662f1990\u5e74\u7531\u745e\u58eb\u8054\u90a6\u6280\u672f\u5b66\u9662\u6765\u5b66\u5609X.J.Lai \u548cMassey\u63d0\u51fa\u7684\u5efa\u8bae\u6807\u51c6\u7b97\u6cd5\u79f0\u4f5cPES( Proposed Encryption Standard) \u3002Lai \u548cMassey \u57281992 \u5e74\u8fdb\u884c\u4e86\u6539\u8fdb\u5f3a\u5316\u4e86\u6297\u5dee\u5206\u5206\u6790\u7684\u80fd\u529b\u6539\u79f0\u4e3aIDEA \u5b83\u4e5f\u662f\u5bf964bit\u5927\u5c0f\u7684\u6570\u636e\u5757\u52a0\u5bc6\u7684\u5206\u7ec4\u52a0\u5bc6\u7b97\u6cd5\u5bc6\u94a5\u957f\u5ea6\u4e3a128\u4f4d\u5b83\u57fa\u4e8e”\u76f8\u5f02\u4ee3\u6570\u7fa4\u4e0a\u7684\u6df7\u5408\u8fd0\u7b97”\u8bbe\u8ba1\u601d\u60f3\u7b97\u6cd5\u7528\u786c\u4ef6\u548c\u8f6f\u4ef6\u5b9e\u73b0\u90fd\u5f88\u5bb9\u6613\u4e14\u6bd4DES\u5728\u5b9e\u73b0\u4e0a\u5feb\u7684\u591a\u3002IDEA\u81ea\u95ee\u4e16\u4ee5\u6765\uff0c\u5df2\u7ecf\u7ecf\u5386\u4e86\u5927\u91cf\u7684\u8be6\u7ec6\u5ba1\u67e5\uff0c\u5bf9\u5bc6\u7801\u5206\u6790\u5177\u6709\u5f88\u5f3a\u7684\u62b5\u6297\u80fd\u529b\uff0c\u5728\u591a\u79cd\u5546\u4e1a\u4ea7\u54c1\u4e2d\u88ab\u4f7f\u7528\u3002
\n\u8fd9\u79cd\u7b97\u6cd5\u662f\u5728DES\u7b97\u6cd5\u7684\u57fa\u7840\u4e0a\u53d1\u5c55\u51fa\u6765\u7684\uff0c\u7c7b\u4f3c\u4e8e\u4e09\u91cdDES\u3002\u53d1\u5c55IDEA\u4e5f\u662f\u56e0\u4e3a\u611f\u5230DES\u5177\u6709\u5bc6\u94a5\u592a\u77ed\u7b49\u7f3a\u70b9\uff0c\u5df2\u7ecf\u8fc7\u65f6\u3002IDEA\u7684\u5bc6\u94a5\u4e3a128\u4f4d\uff0c\u8fd9\u4e48\u957f\u7684\u5bc6\u94a5\u5728\u4eca\u540e\u82e5\u5e72\u5e74\u5185\u5e94\u8be5\u662f\u5b89\u5168\u7684\u3002
\n\u7c7b\u4f3c\u4e8eDES\uff0cIDEA\u7b97\u6cd5\u4e5f\u662f\u4e00\u79cd\u6570\u636e\u5757\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5b83\u8bbe\u8ba1\u4e86\u4e00\u7cfb\u5217\u52a0\u5bc6\u8f6e\u6b21\uff0c\u6bcf\u8f6e\u52a0\u5bc6\u90fd\u4f7f\u7528\u4ece\u5b8c\u6574\u7684\u52a0\u5bc6\u5bc6\u94a5\u4e2d\u751f\u6210\u7684\u4e00\u4e2a\u5b50\u5bc6\u94a5\u3002\u4e0eDES\u7684\u4e0d\u540c\u5904\u5728\u4e8e\uff0c\u5b83\u91c7\u7528\u8f6f\u4ef6\u5b9e\u73b0\u548c\u91c7\u7528\u786c\u4ef6\u5b9e\u73b0\u540c\u6837\u5feb\u901f\u3002
\n2.5 RC5<\/strong>
\nRC5\u5206\u7ec4\u5bc6\u7801\u7b97\u6cd5\u662f1994\u7531\u9ebb\u8428\u8bf8\u585e\u6280\u672f\u7814\u7a76\u6240\u7684Ronald L. Rivest\u6559\u6388\u53d1\u660e\u7684\uff0c\u5e76\u7531RSA\u5b9e\u9a8c\u5ba4\u5206\u6790\u3002\u5b83\u662f\u53c2\u6570\u53ef\u53d8\u7684\u5206\u7ec4\u5bc6\u7801\u7b97\u6cd5\uff0c\u4e09\u4e2a\u53ef\u53d8\u7684\u53c2\u6570\u662f\uff1a\u5206\u7ec4\u5927\u5c0f\u3001\u5bc6\u94a5\u5927\u5c0f\u548c\u52a0\u5bc6\u8f6e\u6570\u3002\u5728\u6b64\u7b97\u6cd5\u4e2d\u4f7f\u7528\u4e86\u4e09\u79cd\u8fd0\u7b97\uff1a\u5f02\u6216\u3001\u52a0\u548c\u5faa\u73af\u3002
\n3\u00a0 \u00a0\u975e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5<\/strong>
\n1976\u5e74\uff0c\u7f8e\u56fd\u5b66\u8005Dime\u548cHenman\u4e3a\u89e3\u51b3\u4fe1\u606f\u516c\u5f00\u4f20\u9001\u548c\u5bc6\u94a5\u7ba1\u7406\u95ee\u9898\uff0c\u63d0\u51fa\u4e00\u79cd\u65b0\u7684\u5bc6\u94a5\u4ea4\u6362\u534f\u8bae\uff0c\u5141\u8bb8\u5728\u4e0d\u5b89\u5168\u7684\u5a92\u4f53\u4e0a\u7684\u901a\u8baf\u53cc\u65b9\u4ea4\u6362\u4fe1\u606f\uff0c\u5b89\u5168\u5730\u8fbe\u6210\u4e00\u81f4\u7684\u5bc6\u94a5\uff0c\u8fd9\u5c31\u662f\u201c\u516c\u5f00\u5bc6\u94a5\u7cfb\u7edf\u201d\u3002
\n\u4e0e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u4e0d\u540c\uff0c\u975e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u9700\u8981\u4e24\u4e2a\u5bc6\u94a5\uff1a\u516c\u5f00\u5bc6\u94a5\uff08publickey\uff09\u548c\u79c1\u6709\u5bc6\u94a5\uff08privatekey\uff09\u3002\u516c\u5f00\u5bc6\u94a5\u4e0e\u79c1\u6709\u5bc6\u94a5\u662f\u4e00\u5bf9\uff0c\u5982\u679c\u7528\u516c\u5f00\u5bc6\u94a5\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\uff0c\u53ea\u6709\u7528\u5bf9\u5e94\u7684\u79c1\u6709\u5bc6\u94a5\u624d\u80fd\u89e3\u5bc6\uff1b\u5982\u679c\u7528\u79c1\u6709\u5bc6\u94a5\u5bf9\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\uff0c\u90a3\u4e48\u53ea\u6709\u7528\u5bf9\u5e94\u7684\u516c\u5f00\u5bc6\u94a5\u624d\u80fd\u89e3\u5bc6\u3002\u56e0\u4e3a\u52a0\u5bc6\u548c\u89e3\u5bc6\u4f7f\u7528\u7684\u662f\u4e24\u4e2a\u4e0d\u540c\u7684\u5bc6\u94a5\uff0c\u6240\u4ee5\u8fd9\u79cd\u7b97\u6cd5\u53eb\u4f5c\u975e\u5bf9\u79f0\u52a0\u5bc6\u7b97\u6cd5\u3002\u975e\u5bf9\u79f0\u52a0\u5bc6\u7684\u7f3a\u70b9\u662f\u52a0\u5bc6\u548c\u89e3\u5bc6\u82b1\u8d39\u65f6\u95f4\u957f\u3001\u901f\u5ea6\u6162\uff0c\u53ea\u9002\u5408\u5bf9\u5c11\u91cf\u6570\u636e\u8fdb\u884c\u52a0\u5bc6\u3002\u5e38\u89c1\u7684\u975e\u5bf9\u79f0\u52a0\u52a0\u5bc6\u7b97\u6cd5\u6709\uff1a
\n2.1 \u00a0 RSA\u7b97\u6cd5<\/strong>
\nRSA\u516c\u94a5\u52a0\u5bc6\u7b97\u6cd5\u662f1977\u5e74\u7531\u7f57\u7eb3\u5fb7\u00b7\u674e\u7ef4\u65af\u7279\uff08Ron Rivest\uff09\u3001\u963f\u8fea\u00b7\u8428\u83ab\u5c14\uff08Adi Shamir\uff09\u548c\u4f26\u7eb3\u5fb7\u00b7\u963f\u5fb7\u66fc\uff08Leonard Adleman\uff09\u4e00\u8d77\u63d0\u51fa\u7684\u3002\u5f53\u65f6\u4ed6\u4eec\u4e09\u4eba\u90fd\u5728\u9ebb\u7701\u7406\u5de5\u5b66\u9662\u5de5\u4f5c\u3002RSA\u5c31\u662f\u4ed6\u4eec\u4e09\u4eba\u59d3\u6c0f\u5f00\u5934\u5b57\u6bcd\u62fc\u5728\u4e00\u8d77\u7ec4\u6210\u7684\u3002
\nRSA\u662f\u76ee\u524d\u6700\u6709\u5f71\u54cd\u529b\u7684\u516c\u94a5\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5b83\u80fd\u591f\u62b5\u6297\u5230\u76ee\u524d\u4e3a\u6b62\u5df2\u77e5\u7684\u7edd\u5927\u591a\u6570\u5bc6\u7801\u653b\u51fb\uff0c\u5df2\u88abISO\u63a8\u8350\u4e3a\u516c\u94a5\u6570\u636e\u52a0\u5bc6\u6807\u51c6\u3002
\nRSA \u793a\u4f8b\uff1a
\n2.1.1 \u751f\u6210\u5bc6\u94a5<\/strong>
\nopenssl genrsa -out key.pem 1024
\n-out \u6307\u5b9a\u751f\u6210\u6587\u4ef6\uff0c\u6b64\u6587\u4ef6\u5305\u542b\u516c\u94a5\u548c\u79c1\u94a5\u4e24\u90e8\u5206\uff0c\u6240\u4ee5\u5373\u53ef\u4ee5\u52a0\u5bc6\uff0c\u4e5f\u53ef\u4ee5\u89e3\u5bc6
\n1024 \u751f\u6210\u5bc6\u94a5\u7684\u957f\u5ea6
\n2.1.2 \u63d0\u53d6PEM\u683c\u5f0f\u516c\u94a5
\n<\/strong>
\nopenssl rsa -in key.pem -pubout -out pubkey.pem
\n-in \u6307\u5b9a\u8f93\u5165\u7684\u5bc6\u94a5\u6587\u4ef6
\n-out \u6307\u5b9a\u63d0\u53d6\u751f\u6210\u516c\u94a5\u7684\u6587\u4ef6(PEM\u516c\u94a5\u683c\u5f0f)
\n2.1.3 \u63d0\u53d6PEM\u3000RSAPublicKe\u683c\u5f0f\u516c\u94a5
\n<\/strong>
\nopenssl rsa -in key.pem -RSAPublicKey_out -out pubkey.pem
\n-in \u6307\u5b9a\u8f93\u5165\u7684\u5bc6\u94a5\u6587\u4ef6
\n-out \u6307\u5b9a\u63d0\u53d6\u751f\u6210\u516c\u94a5\u7684\u6587\u4ef6(PEM RSAPublicKey\u683c\u5f0f)
\n2.1.4 \u516c\u94a5\u52a0\u5bc6\u6587\u4ef6
\n<\/strong>
\nopenssl rsautl -encrypt -in input.file -inkey pubkey.pem -pubin -out output.file
\n-in \u6307\u5b9a\u88ab\u52a0\u5bc6\u7684\u6587\u4ef6
\n-inkey \u6307\u5b9a\u52a0\u5bc6\u516c\u94a5\u6587\u4ef6
\n-pubin \u8868\u9762\u662f\u7528\u7eaf\u516c\u94a5\u6587\u4ef6\u52a0\u5bc6
\n-out \u6307\u5b9a\u52a0\u5bc6\u540e\u7684\u6587\u4ef6
\n2.1.5 \u79c1\u94a5\u89e3\u5bc6\u6587\u4ef6<\/strong>
\nopenssl rsautl -decrypt -in input.file -inkey key.pem -out output.file
\n-in \u6307\u5b9a\u9700\u8981\u89e3\u5bc6\u7684\u6587\u4ef6
\n-inkey \u6307\u5b9a\u79c1\u94a5\u6587\u4ef6
\n-out \u6307\u5b9a\u89e3\u5bc6\u540e\u7684\u6587\u4ef6<\/p>\n

<\/div>\n

2.2 \u00a0 EIGamal\u7b97\u6cd5
\n<\/strong>
\n2002\u5e74\uff0c\u7f8e\u56fdSUN\u516c\u53f8\u5c06\u5176\u5f00\u53d1\u7684\u692d\u5706\u52a0\u5bc6\u7b97\u6cd5\u6280\u672f\u8d60\u9001\u7ed9\u5f00\u653e\u6e90\u4ee3\u7801\u5de5\u7a0b\u3002
\n\u516c\u94a5\u5bc6\u7801\u4f53\u5236\u6839\u636e\u5176\u6240\u4f9d\u636e\u7684\u96be\u9898\u4e00\u822c\u5206\u4e3a\u4e09\u7c7b\uff1a\u5927\u6574\u6570\u5206\u89e3\u95ee\u9898\u7c7b\u3001\u79bb\u6563\u5bf9\u6570\u95ee\u9898\u7c7b\u3001\u692d\u5706\u66f2\u7ebf\u7c7b\u3002\u6709\u65f6\u4e5f\u628a\u692d\u5706\u66f2\u7ebf\u7c7b\u5f52\u4e3a\u79bb\u6563\u5bf9\u6570\u7c7b\u3002
\nElGamal\u7b97\u6cd5\uff0c\u662f\u4e00\u79cd\u8f83\u4e3a\u5e38\u89c1\u7684\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5b83\u662f\u57fa\u4e8e1984\u5e74\u63d0\u51fa\u7684\u516c\u94a5\u5bc6\u7801\u4f53\u5236\u548c\u692d\u5706\u66f2\u7ebf\u52a0\u5bc6\u4f53\u7cfb\u3002\u65e2\u80fd\u7528\u4e8e\u6570\u636e\u52a0\u5bc6\u4e5f\u80fd\u7528\u4e8e\u6570\u5b57\u7b7e\u540d\uff0c\u5176\u5b89\u5168\u6027\u4f9d\u8d56\u4e8e\u8ba1\u7b97\u6709\u9650\u57df\u4e0a\u79bb\u6563\u5bf9\u6570\u8fd9\u4e00\u96be\u9898\u3002\u5728\u52a0\u5bc6\u8fc7\u7a0b\u4e2d\uff0c\u751f\u6210\u7684\u5bc6\u6587\u957f\u5ea6\u662f\u660e\u6587\u7684\u4e24\u500d\uff0c\u4e14\u6bcf\u6b21\u52a0\u5bc6\u540e\u90fd\u4f1a\u5728\u5bc6\u6587\u4e2d\u751f\u6210\u4e00\u4e2a\u968f\u673a\u6570K\uff0c\u5728\u5bc6\u7801\u4e2d\u4e3b\u8981\u5e94\u7528\u79bb\u6563\u5bf9\u6570\u95ee\u9898\u7684\u51e0\u4e2a\u6027\u8d28\uff1a\u6c42\u89e3\u79bb\u6563\u5bf9\u6570\uff08\u53ef\u80fd\uff09\u662f\u56f0\u96be\u7684\uff0c\u800c\u5176\u9006\u8fd0\u7b97\u6307\u6570\u8fd0\u7b97\u53ef\u4ee5\u5e94\u7528\u5e73\u65b9-\u4e58\u7684\u65b9\u6cd5\u6709\u6548\u5730\u8ba1\u7b97\u3002\u4e5f\u5c31\u662f\u8bf4\uff0c\u5728\u9002\u5f53\u7684\u7fa4G\u4e2d\uff0c\u6307\u6570\u51fd\u6570\u662f\u5355\u5411\u51fd\u6570\u3002
\n2.3 \u00a0 \u80cc\u5305\u7b97\u6cd5<\/strong>
\n1977\u5e74\uff0cMerkle\u4e0eHellman\u5408\u4f5c\u8bbe\u8ba1\u4e86\u4f7f\u7528\u80cc\u5305\u95ee\u9898\u5b9e\u73b0\u4fe1\u606f\u52a0\u5bc6\u7684\u65b9\u6cd5\u3002
\n\u5176\u5de5\u4f5c\u539f\u7406\u662f\uff1a\u5047\u5b9a\u7532\u60f3\u52a0\u5bc6\uff0c\u5219\u5148\u4ea7\u751f\u4e00\u4e2a\u8f83\u6613\u6c42\u89e3\u7684\u80cc\u5305\u95ee\u9898\uff0c\u5e76\u7528\u5b83\u7684\u89e3\u4f5c\u4e3a\u4e13\u7528\u5bc6\u94a5\uff1b\u7136\u540e\u4ece\u8fd9\u4e2a\u95ee\u9898\u51fa\u53d1\uff0c\u751f\u6210\u53e6\u4e00\u4e2a\u96be\u89e3\u7684\u80cc\u5305\u95ee\u9898\uff0c\u5e76\u4f5c\u4e3a\u516c\u5171\u5bc6\u94a5\u3002\u5982\u679c\u4e59\u60f3\u5411\u7532\u53d1\u9001\u62a5\u6587\uff0c\u4e59\u5c31\u53ef\u4ee5\u4f7f\u7528\u96be\u89e3\u7684\u80cc\u5305\u95ee\u9898\u5bf9\u62a5\u6587\u8fdb\u884c\u52a0\u5bc6\uff0c\u7531\u4e8e\u8fd9\u4e2a\u95ee\u9898\u5341\u5206\u96be\u89e3\uff0c\u6240\u4ee5\u4e00\u822c\u6ca1\u6709\u4eba\u80fd\u591f\u7834\u8bd1\u5bc6\u6587\uff1b\u7532\u6536\u5230\u5bc6\u6587\u540e\uff0c\u53ef\u4ee5\u4f7f\u7528\u6613\u89e3\u7684\u4e13\u7528\u5bc6\u94a5\u89e3\u5bc6\u3002\u4f46\u662f\uff0c\u5728\u5b83\u53d1\u8868\u51e0\u5e74\u540e\uff0c\u5c31\u627e\u5230\u4e86\u653b\u7834\u5b83\u7684\u65b9\u6cd5\u3002\u5373\u4f7f\u5982\u6b64\uff0c\u5b83\u4ecd\u7136\u4ee3\u8868\u7740\u4e00\u7c7b\u5f88\u96be\u95ee\u9898\u7684\u7b97\u6cd5\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5e73\u65f6\u5de5\u4f5c\u603b\u662f\u8981\u767b\u9646\u5404\u79cd\u7cfb\u7edf\uff0c\u5c11\u4e0d\u4e86\u4f7f\u7528\u5bc6\u94a5\uff0c\u4e5f\u5c31\u662f\u4f18\u76fe\uff0c\u4e00\u76f4\u597d\u5947\u4f18\u76fe\u662f\u600e\u4e48\u5b9e\u73b0\u7528\u6237\u8eab\u4efd\u9a8c\u8bc1\u7684\uff0c\u7ecf\u8fc7\u4e00\u6bb5\u65f6\u95f4\u7684\u7814 … \u7ee7\u7eed\u9605\u8bfb\u52a0\u5bc6\u7b97\u6cd5\u6c47\u603b\u53ca\u793a\u4f8b<\/span> →<\/span><\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[23],"tags":[215,270,399,892],"views":4290,"_links":{"self":[{"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/posts\/72"}],"collection":[{"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"http:\/\/dachengge.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=72"}],"version-history":[{"count":0,"href":"http:\/\/dachengge.com\/index.php?rest_route=\/wp\/v2\/posts\/72\/revisions"}],"wp:attachment":[{"href":"http:\/\/dachengge.com\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=72"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/dachengge.com\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=72"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/dachengge.com\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=72"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}