PGP\u2014Pretty Good Privacy\uff0c\u662f\u4e00\u4e2a\u57fa\u4e8eRSA\u516c\u5319\u52a0\u5bc6\u4f53\u7cfb\u7684\u90ae\u4ef6\u52a0\u5bc6\u8f6f\u4ef6\u3002\u53ef\u4ee5\u7528\u5b83\u5bf9\u4f60\u7684\u90ae\u4ef6\u4fdd\u5bc6\u4ee5\u9632\u6b62\u975e\u6388\u6743\u8005\u9605\u8bfb\uff0c\u5b83\u8fd8\u80fd\u5bf9\u4f60\u7684\u90ae\u4ef6\u52a0\u4e0a\u6570\u5b57\u7b7e\u540d\u4ece\u800c\u4f7f\u6536\u4fe1\u4eba\u53ef\u4ee5\u786e\u4fe1\u90ae\u4ef6\u662f\u4f60\u53d1\u6765\u7684\u3002\u5b83\u8ba9\u4f60\u53ef\u4ee5\u5b89\u5168\u5730\u548c\u4f60\u4ece\u672a\u89c1\u8fc7\u7684\u4eba\u4eec\u901a\u8baf\uff0c\u4e8b\u5148\u5e76\u4e0d\u9700\u8981\u4efb\u4f55\u4fdd\u5bc6\u7684\u6e20\u9053\u7528\u6765\u4f20\u9012\u5bc6\u5319\u3002\u5b83\u91c7\u7528\u4e86\uff1a\u5ba1\u614e\u7684\u5bc6\u5319\u7ba1\u7406\uff0c\u4e00\u79cdRSA\u548c\u4f20\u7edf\u52a0\u5bc6\u7684\u6742\u5408\u7b97\u6cd5\uff0c\u7528\u4e8e\u6570\u5b57\u7b7e\u540d\u7684\u90ae\u4ef6\u6587\u6458\u7b97\u6cd5\uff0c\u52a0\u5bc6\u524d\u538b\u7f29\u7b49\uff0c\u8fd8\u6709\u4e00\u4e2a\u826f\u597d\u7684\u4eba\u673a\u5de5\u7a0b\u8bbe\u8ba1\u3002\u5b83\u7684\u529f\u80fd\u5f3a\u5927\uff0c\u6709\u5f88\u5feb\u7684\u901f\u5ea6\u3002\u800c\u4e14\u5b83\u7684\u6e90\u4ee3\u7801\u662f\u514d\u8d39\u7684\u3002<\/p>\n
\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d\uff1d
PGP \u7b80\u4ecb<\/p>\n
by Loking 01\/23\/1997<\/p>\n
\u672c\u6587\u4e3b\u8981\u4ecb\u7ecd\u4e00\u4e9b\u5173\u4e8ePGP\u5b9e\u73b0\u7684\u539f\u7406\u548c\u80cc\u666f\u77e5\u8bc6\u3002\u5176\u4ed6\u5173\u4e8ePGP\u7684\u5b89\u88c5\u3001\u4f7f\u7528\u7b49\u8bf7\u53c2\u8003\u4e0e\u672c\u6587\u540c\u65f6\u63d0\u4f9b\u7684\u5176\u4ed6\u6587\u6863\u3002<\/p>\n
PGP\u2014Pretty Good Privacy\uff0c\u662f\u4e00\u4e2a\u57fa\u4e8eRSA\u516c\u5319\u52a0\u5bc6\u4f53\u7cfb\u7684\u90ae\u4ef6\u52a0\u5bc6\u8f6f\u4ef6\u3002\u53ef\u4ee5\u7528\u5b83\u5bf9\u4f60\u7684\u90ae\u4ef6\u4fdd\u5bc6\u4ee5\u9632\u6b62\u975e\u6388\u6743\u8005\u9605\u8bfb\uff0c\u5b83\u8fd8\u80fd\u5bf9\u4f60\u7684\u90ae\u4ef6\u52a0\u4e0a\u6570\u5b57\u7b7e\u540d\u4ece\u800c\u4f7f\u6536\u4fe1\u4eba\u53ef\u4ee5\u786e\u4fe1\u90ae\u4ef6\u662f\u4f60\u53d1\u6765\u7684\u3002\u5b83\u8ba9\u4f60\u53ef\u4ee5\u5b89\u5168\u5730\u548c\u4f60\u4ece\u672a\u89c1\u8fc7\u7684\u4eba\u4eec\u901a\u8baf\uff0c\u4e8b\u5148\u5e76\u4e0d\u9700\u8981\u4efb\u4f55\u4fdd\u5bc6\u7684\u6e20\u9053\u7528\u6765\u4f20\u9012\u5bc6\u5319\u3002\u5b83\u91c7\u7528\u4e86\uff1a\u5ba1\u614e\u7684\u5bc6\u5319\u7ba1\u7406\uff0c\u4e00\u79cdRSA\u548c\u4f20\u7edf\u52a0\u5bc6\u7684\u6742\u5408\u7b97\u6cd5\uff0c\u7528\u4e8e\u6570\u5b57\u7b7e\u540d\u7684\u90ae\u4ef6\u6587\u6458\u7b97\u6cd5\uff0c\u52a0\u5bc6\u524d\u538b\u7f29\u7b49\uff0c\u8fd8\u6709\u4e00\u4e2a\u826f\u597d\u7684\u4eba\u673a\u5de5\u7a0b\u8bbe\u3002\u5b83\u7684\u529f\u80fd\u5f3a\u5927\u6709\u5f88\u5feb\u7684\u901f\u5ea6\u3002\u800c\u4e14\u5b83\u7684\u6e90\u4ee3\u7801\u662f\u514d\u8d39\u7684\u3002
<\/p>\n
\u5b9e\u9645\u4e0aPGP\u7684\u529f\u80fd\u8fd8\u4e0d\u6b62\u4e0a\u9762\u8bf4\u7684\uff1a PGP\u53ef\u4ee5\u7528\u6765\u52a0\u5bc6\u6587\u4ef6\uff0c\u8fd8\u53ef\u4ee5\u7528PGP\u4ee3\u66ffUUencode \u751f\u6210 RADIX 64 \u683c\u5f0f\uff08\u5c31\u662fMIME \u7684 BASE 64\u683c\u5f0f\uff09\u7684\u7f16\u7801\u6587\u4ef6\u3002<\/p>\n
PGP \u7684\u521b\u59cb\u4eba\u662f\u7f8e\u56fd\u7684 Phil Zimmermann\u3002\u4ed6\u7684\u521b\u9020\u6027\u5728\u4e8e\u4ed6\u628aRSA\u516c\u5319\u4f53\u7cfb\u7684\u65b9\u4fbf\u548c\u4f20\u7edf\u52a0\u5bc6\u4f53\u7cfb\u7684\u9ad8\u901f\u5ea6\u7ed3\u5408\u8d77\u6765\uff0c\u5e76\u4e14\u5728\u6570\u5b57\u7b7e\u540d\u548c\u5bc6\u5319\u8ba4\u8bc1\u7ba1\u7406\u673a\u5236\u4e0a\u6709\u5de7\u5999\u7684\u8bbe\u8ba1\u3002\u56e0\u6b64PGP\u6210\u4e3a\u51e0\u4e4e\u6700\u6d41\u884c\u7684\u516c\u5319\u52a0\u5bc6\u8f6f\u4ef6\u5305\u3002<\/p>\n
PGP\u662f\u4e00\u79cd\u4f9b\u5927\u4f17\u4f7f\u7528\u7684\u52a0\u5bc6\u8f6f\u4ef6\u3002\u52a0\u5bc6\u662f\u4e3a\u4e86\u5b89\u5168\uff0c\u79c1\u5bc6\u6743\u662f\u4e00\u79cd\u57fa\u672c\u4eba\u6743\u3002\u5728\u73b0\u4ee3\u793e\u4f1a\u91cc\uff0c\u7535\u5b50\u90ae\u4ef6\u548c\u7f51\u7edc\u4e0a\u7684\u6587\u4ef6\u4f20\u8f93\u5df2\u7ecf\u6210\u4e3a\u751f\u6d3b\u7684\u4e00\u90e8\u5206\u3002\u90ae\u4ef6\u7684\u5b89\u5168\u95ee\u9898\u5c31\u65e5\u76ca\u7a81\u51fa\u4e86\uff0c\u5927\u5bb6\u90fd\u77e5\u9053\u5728Internet\u4e0a\u4f20\u8f93\u7684\u6570\u636e\u662f\u4e0d\u52a0\u5bc6\u7684\u3002\u5982\u679c\u4f60\u81ea\u5df1\u4e0d\u4fdd\u62a4\u81ea\u5df1\u7684\u4fe1\u606f\uff0c\u7b2c\u4e09\u8005\u5c31\u4f1a\u8f7b\u6613\u83b7\u5f97\u4f60\u7684\u9690\u79d8\u3002\u8fd8\u6709\u4e00\u4e2a\u95ee\u9898\u5c31\u662f\u4fe1\u606f\u8ba4\u8bc1\uff0c\u5982\u4f55\u8ba9\u6536\u4fe1\u4eba\u786e\u4fe1\u90ae\u4ef6\u6ca1\u6709\u88ab\u7b2c\u4e09\u8005\u7be1\u6539\uff0c\u5c31\u9700\u8981\u6570\u5b57\u7b7e\u540d\u6280\u672f\u3002RSA\u516c\u5319\u4f53\u7cfb\u7684\u7279\u70b9\u4f7f\u5b83\u975e\u5e38\u9002\u5408\u7528\u6765\u6ee1\u8db3\u4e0a\u8ff0\u4e24\u4e2a\u8981\u6c42\uff1a\u4fdd\u5bc6\u6027\uff08Privacy)\u548c\u8ba4\u8bc1\u6027\uff08Authentication\uff09\u3002<\/p>\n
RSA\uff08Rivest-Shamir-Adleman\uff09\u7b97\u6cd5\u662f\u4e00\u79cd\u57fa\u4e8e\u5927\u6570\u4e0d\u53ef\u80fd\u8d28\u56e0\u6570\u5206\u89e3\u5047\u8bbe\u7684\u516c\u5319\u4f53\u7cfb\u3002\u7b80\u5355\u5730\u8bf4\u5c31\u662f\u627e\u4e24\u4e2a\u5f88\u5927\u7684\u8d28\u6570\uff0c\u4e00\u4e2a\u516c\u5f00\u7ed9\u4e16\u754c\uff0c\u4e00\u4e2a\u4e0d\u544a\u8bc9\u4efb\u4f55\u4eba\u3002\u4e00\u4e2a\u79f0\u4e3a\u201c\u516c\u5319\u201d\uff0c\u53e6\u4e00\u4e2a\u53eb\u201c\u79c1\u5319\u201d(Public key & Secret key or Private key)\u3002\u8fd9\u4e24\u4e2a\u5bc6\u5319\u662f\u4e92\u8865\u7684\uff0c\u5c31\u662f\u8bf4\u7528\u516c\u5319\u52a0\u5bc6\u7684\u5bc6\u6587\u53ef\u4ee5\u7528\u79c1\u5319\u89e3\u5bc6\uff0c\u53cd\u8fc7\u6765\u4e5f\u4e00\u6837\u3002\u5047\u8bbe\u7532\u8981\u5bc4\u4fe1\u7ed9\u4e59\uff0c\u4ed6\u4eec\u4e92\u76f8\u77e5\u9053\u5bf9\u65b9\u7684\u516c\u5319\u3002\u7532\u5c31\u7528\u4e59\u7684\u516c\u5319\u52a0\u5bc6\u90ae\u4ef6\u5bc4\u51fa\uff0c\u4e59\u6536\u5230\u540e\u5c31\u53ef\u4ee5\u7528\u81ea\u5df1\u7684\u79c1\u5319\u89e3\u5bc6\u51fa\u7532\u7684\u539f\u6587\u3002\u7531\u4e8e\u6ca1\u522b\u4eba\u77e5\u9053\u4e59\u7684\u79c1\u5319\u6240\u4ee5\u5373\u4f7f\u662f\u7532\u672c\u4eba\u4e5f\u65e0\u6cd5\u89e3\u5bc6\u90a3\u5c01\u4fe1\uff0c\u8fd9\u5c31\u89e3\u51b3\u4e86\u4fe1\u4ef6\u4fdd\u5bc6\u7684\u95ee\u9898\u3002\u53e6\u4e00\u65b9\u9762\u7531\u4e8e\u6bcf\u4e2a\u4eba\u90fd\u77e5\u9053\u4e59\u7684\u516c\u5319\uff0c\u4ed6\u4eec\u90fd\u53ef\u4ee5\u7ed9\u4e59\u53d1\u4fe1\uff0c\u90a3\u4e48\u4e59\u5c31\u65e0\u6cd5\u786e\u4fe1\u662f\u4e0d\u662f\u7532\u7684\u6765\u4fe1\u3002\u8ba4\u8bc1\u7684\u95ee\u9898\u5c31\u51fa\u73b0\u4e86\uff0c\u8fd9\u65f6\u5019\u6570\u5b57\u7b7e\u540d\u5c31\u6709\u7528\u4e86\u3002<\/p>\n
\u5728\u8bf4\u660e\u6570\u5b57\u7b7e\u540d\u524d\u5148\u8981\u89e3\u91ca\u4e00\u4e0b\u4ec0\u4e48\u662f\u201c\u90ae\u4ef6\u6587\u6458\u201d(message digest)\uff0c\u7b80\u5355\u5730\u8bb2\u5c31\u662f\u5bf9\u4e00\u5c01\u90ae\u4ef6\u7528\u67d0\u79cd\u7b97\u6cd5\u7b97\u51fa\u4e00\u4e2a\u80fd\u4f53\u73b0\u8fd9\u5c01\u90ae\u4ef6\u201c\u7cbe\u534e\u201d\u7684\u6570\u6765\uff0c\u4e00\u65e6\u90ae\u4ef6\u6709\u4efb\u4f55\u6539\u53d8\u8fd9\u4e2a\u6570\u90fd\u4f1a\u53d8\u5316\uff0c\u90a3\u4e48\u8fd9\u4e2a\u6570\u52a0\u4e0a\u4f5c\u8005\u7684\u540d\u5b57\uff08\u5b9e\u9645\u4e0a\u5728\u4f5c\u8005\u7684\u5bc6\u5319\u91cc\uff09\u8fd8\u6709\u65e5\u671f\u7b49\u7b49\uff0c\u5c31\u53ef\u4ee5\u4f5c\u4e3a\u4e00\u4e2a\u7b7e\u540d\u4e86\u3002\u786e\u5207\u5730\u8bf4PGP\u662f\u7528\u4e00\u4e2a128\u4f4d\u7684\u4e8c\u8fdb\u5236\u6570\u4f5c\u4e3a\u201c\u90ae\u4ef6\u6587\u6458\u201d\u7684\uff0c\u7528\u6765\u4ea7\u751f\u5b83\u7684\u7b97\u6cd5\u53ebMD5(message digest 5)\uff0cMD5\u7684\u63d0\u51fa\u8005\u662fRon Rivest\uff0cPGP\u4e2d\u4f7f\u7528\u7684\u4ee3\u7801\u662f\u7531Colin Plumb \u7f16\u5199\u7684\uff0cMD5\u672c\u8eab\u662f\u516c\u7528\u8f6f\u4ef6\u3002\u6240\u4ee5PGP\u7684\u6cd5\u5f8b\u6761\u6b3e\u4e2d\u6ca1\u6709\u63d0\u5230\u5b83\u3002MD5\u662f\u4e00\u79cd\u5355\u5411\u6563\u5217\u7b97\u6cd5\uff0c\u5b83\u4e0d\u50cfCRC\u6821\u9a8c\u7801\uff0c\u5f88\u96be\u627e\u5230\u4e00\u4efd\u66ff\u4ee3\u7684\u90ae\u4ef6\u800c\u4e0e\u539f\u4ef6\u5177\u6709\u4e00\u6837\u7684\u201c\u7cbe\u534e\u201d\u3002<\/p>\n
\u56de\u5230\u6570\u5b57\u7b7e\u540d\u4e0a\u6765\uff0c\u7532\u7528\u81ea\u5df1\u7684\u79c1\u5319\u5c06\u4e0a\u8ff0\u7684128\u4f4d\u7684\u201c\u7cbe\u534e\u201d\u52a0\u5bc6\uff0c\u9644\u52a0\u5728\u90ae\u4ef6\u4e0a\uff0c\u518d\u7528\u4e59\u7684\u516c\u5319\u5c06\u6574\u4e2a\u90ae\u4ef6\u52a0\u5bc6\u3002\u8fd9\u6837\u8fd9\u4efd\u5bc6\u6587\u88ab\u4e59\u6536\u5230\u4ee5\u540e\uff0c\u4e59\u7528\u81ea\u5df1\u7684\u79c1\u5319\u5c06\u90ae\u4ef6\u89e3\u5bc6\uff0c\u5f97\u5230\u7532\u7684\u539f\u6587\u548c\u7b7e\u540d\uff0c\u4e59\u7684PGP\u4e5f\u4ece\u539f\u6587\u8ba1\u7b97\u51fa\u4e00\u4e2a128\u4f4d\u7684\u201c\u7cbe\u534e\u201d\u6765\u518d\u7528\u7532\u7684\u516c\u5319\u89e3\u5bc6\u7b7e\u540d\u5f97\u5230\u7684\u6570\u6bd4\u8f83\uff0c\u5982\u679c\u7b26\u5408\u5c31\u8bf4\u660e\u8fd9\u4efd\u90ae\u4ef6\u786e\u5b9e\u662f\u7532\u5bc4\u6765\u7684\u3002\u8fd9\u6837\u4e24\u4e2a\u8981\u6c42\u90fd\u5f97\u5230\u4e86\u6ee1\u8db3\u3002<\/p>\n
PGP\u8fd8\u53ef\u4ee5\u53ea\u7b7e\u540d\u800c\u4e0d\u52a0\u5bc6\uff0c\u8fd9\u9002\u7528\u4e8e\u516c\u5f00\u53d1\u8868\u58f0\u660e\u65f6\uff0c\u58f0\u660e\u4eba\u4e3a\u4e86\u8bc1\u5b9e\u81ea\u5df1\u7684\u8eab\u4efd\uff08\u5728\u7f51\u7edc\u4e0a\u53ea\u80fd\u5982\u6b64\u4e86\uff09\uff0c\u53ef\u4ee5\u7528\u81ea\u5df1\u7684\u79c1\u5319\u7b7e\u540d\u3002\u8fd9\u6837\u5c31\u53ef\u4ee5\u8ba9\u6536\u4ef6\u4eba\u80fd\u786e\u8ba4\u53d1\u4fe1\u4eba\u7684\u8eab\u4efd\uff0c\u4e5f\u53ef\u4ee5\u9632\u6b62\u53d1\u4fe1\u4eba\u62b5\u8d56\u81ea\u5df1\u7684\u58f0\u660e\u3002\u8fd9\u4e00\u70b9\u5728\u5546\u4e1a\u9886\u57df\u6709\u5f88\u5927\u7684\u5e94\u7528\u524d\u9014\uff0c\u5b83\u53ef\u4ee5\u9632\u6b62\u53d1\u4fe1\u4eba\u62b5\u8d56\u548c\u4fe1\u4ef6\u88ab\u9014\u4e2d\u7be1\u6539\u3002<\/p>\n
\u90a3\u4e48\u4e3a\u4ec0\u4e48\u8bf4PGP\u7528\u7684\u662fRSA\u548c\u4f20\u7edf\u52a0\u5bc6\u7684\u6742\u5408\u7b97\u6cd5\u5462\uff1f\u56e0\u4e3aRSA\u7b97\u6cd5\u8ba1\u7b97\u91cf\u6781\u5927\u5728\u901f\u5ea6\u4e0a\u4e0d\u9002\u5408\u52a0\u5bc6\u5927\u91cf\u6570\uff0c\u6240\u4ee5PGP\u5b9e\u9645\u4e0a\u7528\u6765\u52a0\u5bc6\u7684\u4e0d\u662fRSA\u672c\u8eab\uff0c\u800c\u662f\u91c7\u7528\u4e86\u4e00\u79cd\u53ebIDEA\u7684\u4f20\u7edf\u52a0\u5bc6\u7b97\u6cd5\u3002\u6211\u5148\u89e3\u91ca\u4e00\u4e0b\u4ec0\u4e48\u53eb\u4f20\u7edf\u52a0\u5bc6\uff0c\u7b80\u5355\u5730\u8bf4\u5c31\u662f\u7528\u4e00\u4e2a\u5bc6\u5319\u52a0\u5bc6\u660e\u6587\uff0c\u7136\u540e\u7528\u540c\u6837\u7684\u5bc6\u5319\u89e3\u5bc6\u3002\u8fd9\u79cd\u65b9\u6cd5\u7684\u4ee3\u8868\u662fDES(US Federal Data Encryption Standard)\uff0c\u4e5f\u5c31\u662f\u4e58\u6cd5\u52a0\u5bc6\uff0c\u5b83\u7684\u4e3b\u8981\u7f3a\u70b9\u5c31\u662f\u5bc6\u5319\u7684\u4f20\u9012\u6e20\u9053\u89e3\u51b3\u4e0d\u4e86\u5b89\u5168\u6027\u95ee\u9898\uff0c\u4e0d\u9002\u5408\u7f51\u7edc\u73af\u5883\u90ae\u4ef6\u52a0\u5bc6\u9700\u8981\u3002IDEA\u662f\u4e00\u4e2a\u6709\u4e13\u5229\u7684\u7b97\u6cd5\uff0c\u4e13\u5229\u6301\u6709\u8005\u662fETH\u548c\u4e00\u4e2a\u745e\u58eb\u516c\u53f8\uff1aAscom-Tech AG\u3002\u975e\u5546\u4e1a\u7528\u9014\u7684IDEA\u5b9e\u73b0\u4e0d\u7528\u5411\u4ed6\u4eec\u4ea4\u7eb3\u8d39\u7528\u3002IDEA\u7684\u52a0\uff08\u89e3\uff09\u5bc6\u901f\u5ea6\u6bd4RSA\u5feb\u5f97\u591a\uff0c\u6240\u4ee5\u5b9e\u9645\u4e0aPGP\u662f\u7528\u4e00\u4e2a\u968f\u673a\u751f\u6210\u5bc6\u5319\uff08\u6bcf\u6b21\u52a0\u5bc6\u4e0d\u540c\uff09\u7528IDEA\u7b97\u6cd5\u5bf9\u660e\u6587\u52a0\u5bc6\uff0c\u7136\u540e\u7528RSA\u7b97\u6cd5\u5bf9\u8be5\u5bc6\u5319\u52a0\u5bc6\u3002\u8fd9\u6837\u6536\u4ef6\u4eba\u540c\u6837\u662f\u7528RSA\u89e3\u5bc6\u51fa\u8fd9\u4e2a\u968f\u673a\u5bc6\u5319\uff0c\u518d\u7528IDEA\u89e3\u5bc6\u90ae\u4ef6\u672c\u8eab\u3002\u8fd9\u6837\u7684\u94fe\u5f0f\u52a0\u5bc6\u5c31\u505a\u5230\u4e86\u65e2\u6709RSA\u4f53\u7cfb\u7684\u4fdd\u5bc6\u6027\uff0c\u53c8\u6709IDEA\u7b97\u6cd5\u7684\u5feb\u6377\u6027\u3002PGP\u7684\u521b\u610f\u6709\u4e00\u534a\u5c31\u5728\u8fd9\u4e00\u70b9\u4e0a\u4e86\uff0c\u4e3a\u4ec0\u4e48RSA\u4f53\u7cfb70\u5e74\u4ee3\u5c31\u63d0\u51fa\u6765\uff0c\u4e00\u76f4\u6ca1\u6709\u63a8\u5e7f\u5e94\u7528\u5462\uff1f\u901f\u5ea6\u592a\u6162\uff01\u90a3\u4e48PGP\u521b\u610f\u7684\u53e6\u4e00\u534a\u5728\u54ea\u513f\u5462\uff1f\u4e0b\u9762\u6211\u518d\u8c08PGP\u7684\u5bc6\u5319\u7ba1\u7406\u3002<\/p>\n
\u4e00\u4e2a\u6210\u719f\u7684\u52a0\u5bc6\u4f53\u7cfb\u5fc5\u7136\u8981\u6709\u4e00\u4e2a\u6210\u719f\u7684\u5bc6\u5319\u7ba1\u7406\u673a\u5236\u914d\u5957\u3002\u516c\u5319\u4f53\u5236\u7684\u63d0\u51fa\u5c31\u662f\u4e3a\u4e86\u89e3\u51b3\u4f20\u7edf\u52a0\u5bc6\u4f53\u7cfb\u7684\u5bc6\u5319\u5206\u914d\u96be\u4fdd\u5bc6\u7684\u7f3a\u70b9\u3002\u6bd4\u5982\u7f51\u7edchacker\u4eec\u5e38\u7528\u7684\u624b\u6bb5\u4e4b\u4e00\u5c31\u662f\u201c\u76d1\u542c\u201d\uff0c\u5982\u679c\u5bc6\u5319\u662f\u901a\u8fc7\u7f51\u7edc\u4f20\u9001\u5c31\u592a\u5371\u9669\u4e86\u3002\u4e3e\u4e2a\u4f8b\u5b50\uff1aNovellNetware \u7684\u8001\u7248\u672c\u4e2d\uff0c\u7528\u6237\u7684\u5bc6\u7801\u662f\u4ee5\u660e\u6587\u5728\u7ebf\u8def\u4e2d\u4f20\u8f93\u7684\uff0c\u8fd9\u6837\u76d1\u542c\u8005\u8f7b\u6613\u5c31\u83b7\u5f97\u4e86\u4ed6\u4eba\u7684\u5bc6\u7801\u3002\u5f53\u7136 Netware 4.1 \u4e2d\u6570\u636e\u5305\u5934\u7684\u7528\u6237\u5bc6\u7801\u73b0\u5728\u662f\u52a0\u5bc6\u7684\u4e86\u3002\u5bf9PGP\u6765\u8bf4\u516c\u5319\u672c\u6765\u5c31\u8981\u516c\u5f00\uff0c\u5c31\u6ca1\u6709\u9632\u76d1\u542c\u7684\u95ee\u9898\u3002\u4f46\u516c\u5319\u7684\u53d1\u5e03\u4e2d\u4ecd\u7136\u5b58\u5728\u5b89\u5168\u6027\u95ee\u9898\uff0c\u4f8b\u5982\u516c\u5319\u7684\u88ab\u7be1\u6539(Public Key Tampering)\uff0c\u8fd9\u53ef\u80fd\u662f\u516c\u5319\u5bc6\u7801\u4f53\u7cfb\u4e2d\u6700\u5927\u7684\u6f0f\u6d1e\uff0c\u56e0\u4e3a\u5927\u591a\u6570\u65b0\u624b\u4e0d\u80fd\u5f88\u5feb\u53d1\u73b0\u8fd9\u4e00\u70b9\u3002\u4f60\u5fc5\u987b\u786e\u4fe1\u4f60\u62ff\u5230\u7684\u516c\u5319\u5c5e\u4e8e\u5b83\u770b\u4e0a\u53bb\u5c5e\u4e8e\u7684\u90a3\u4e2a\u4eba\u3002\u4e3a\u4e86\u628a\u8fd9\u4e2a\u95ee\u9898\u8bf4\u6e05\u695a\uff0c\u6211\u4e3e\u4e2a\u4f8b\u5b50\uff0c\u7136\u540e\u518d\u8bf4\u5982\u4f55\u6b63\u786e\u5730\u7528PGP\u5835\u4f4f\u8fd9\u4e2a\u6f0f\u6d1e\u3002<\/p>\n
\u4ee5\u4f60\u548cAlice\u7684\u901a\u4fe1\u4e3a\u4f8b\uff0c\u5047\u8bbe\u4f60\u60f3\u7ed9Alice\u53d1\u5c01\u4fe1\uff0c\u90a3\u4f60\u5fc5\u987b\u6709Alice\u7684\u516c\u5319\uff0c\u4f60\u4eceBBS\u4e0a\u4e0b\u8f7d\u4e86Alice\u7684\u516c\u5319\uff0c\u5e76\u7528\u5b83\u52a0\u5bc6\u4e86\u4fe1\u4ef6\u7528BBS\u7684Email\u529f\u80fd\u53d1\u7ed9\u4e86Alice\u3002\u4e0d\u5e78\u5730\uff0c\u4f60\u548cAlice\u90fd\u4e0d\u77e5\u9053\uff0c\u53e6\u4e00\u4e2a\u7528\u6237\u53ebCharlie\u7684\u7528\u6237\u6f5c\u5165BBS\uff0c\u628a\u4ed6\u81ea\u5df1\u7528Alice\u7684\u540d\u5b57\u751f\u6210\u7684\u5bc6\u5319\u5bf9\u4e2d\u7684\u516c\u5319\u66ff\u6362\u4e86Alice\u7684\u516c\u5319\u3002\u90a3\u4f60\u7528\u6765\u53d1\u4fe1\u7684\u516c\u5319\u5c31\u4e0d\u662fAlice\u7684\u800c\u662fCharlie\u7684\uff0c\u4e00\u5207\u770b\u6765\u90fd\u5f88\u6b63\u5e38\uff0c\u56e0\u4e3a\u4f60\u62ff\u5230\u7684\u516c\u5319\u7684\u7528\u6237\u540d\u662f\u201cAlice\u201d\u3002\u4e8e\u662fCharlie\u5c31\u53ef\u4ee5\u7528\u4ed6\u624b\u4e2d\u7684\u79c1\u5319\u6765\u89e3\u5bc6\u4f60\u7ed9Alice\u7684\u4fe1\uff0c\u751a\u81f3\u4ed6\u8fd8\u53ef\u4ee5\u7528Alice\u771f\u6b63\u7684\u516c\u5319\u6765\u8f6c\u53d1\u4f60\u7ed9Alice\u7684\u4fe1\uff0c\u8fd9\u6837\u8c01\u90fd\u4e0d\u4f1a\u8d77\u7591\u5fc3\uff0c\u4ed6\u5982\u679c\u60f3\u6539\u52a8\u4f60\u7ed9Alice\u7684\u4fe1\u4e5f\u6ca1\u95ee\u9898\u3002\u66f4\u6709\u751a\u8005\uff0c\u4ed6\u8fd8\u53ef\u4ee5\u4f2a\u9020Alice\u7684\u7b7e\u540d\u7ed9\u4f60\u6216\u5176\u4ed6\u4eba\u53d1\u4fe1\uff0c\u56e0\u4e3a\u4f60\u4eec\u624b\u4e2d\u7684\u516c\u5319\u662f\u4f2a\u9020\u7684\uff0c\u4f60\u4eec\u4f1a\u4ee5\u4e3a\u771f\u662fAlice\u7684\u6765\u4fe1\u3002<\/p>\n
\u9632\u6b62\u8fd9\u79cd\u60c5\u51b5\u51fa\u73b0\u7684\u6700\u597d\u529e\u6cd5\u662f\u907f\u514d\u8ba9\u4efb\u4f55\u5176\u4ed6\u4eba\u6709\u673a\u4f1a\u7be1\u6539\u516c\u5319\uff0c\u6bd4\u5982\u76f4\u63a5\u4eceAlice\u624b\u4e2d\u5f97\u5230\u5979\u7684\u516c\u5319\uff0c\u7136\u800c\u5f53\u5979\u5728\u5343\u91cc\u4e4b\u5916\u6216\u65e0\u6cd5\u89c1\u5230\u65f6\uff0c\u8fd9\u662f\u5f88\u56f0\u96be\u7684\u3002PGP\u53d1\u5c55\u4e86\u4e00\u79cd\u516c\u5319\u4ecb\u7ecd\u673a\u5236\u6765\u89e3\u51b3\u8fd9\u4e2a\u95ee\u9898\u3002\u4e3e\u4f8b\u6765\u8bf4\uff1a\u5982\u679c\u4f60\u548cAlice\u6709\u4e00\u4e2a\u5171\u540c\u7684\u670b\u53cbDavid\uff0c\u800cDavid\u77e5\u9053\u4ed6\u624b\u4e2d\u7684Alice\u7684\u516c\u5319\u662f\u6b63\u786e\u7684\uff08\u5173\u4e8e\u5982\u4f55\u8ba4\u8bc1\u516c\u5319\uff0cPGP\u8fd8\u6709\u4e00\u79cd\u65b9\u6cd5\uff0c\u540e\u9762\u4f1a\u8c08\u5230\uff0c\u8fd9\u91cc\u5047\u8bbeDavid\u5df2\u7ecf\u548cAlice\u8ba4\u8bc1\u8fc7\u5979\u7684\u516c\u5319\uff09\u3002\u8fd9\u6837David\u53ef\u4ee5\u7528\u4ed6\u81ea\u5df1\u7684\u79c1\u5319\u5728Alice\u7684\u516c\u5319\u4e0a\u7b7e\u540d\uff08\u5c31\u662f\u7528\u4e0a\u9762\u8bb2\u7684\u7b7e\u540d\u65b9\u6cd5\uff09\uff0c\u8868\u793a\u4ed6\u62c5\u4fdd\u8fd9\u4e2a\u516c\u5319\u5c5e\u4e8eAlice\u3002\u5f53\u7136\u4f60\u9700\u8981\u7528David\u7684\u516c\u5319\u6765\u6821\u9a8c\u4ed6\u7ed9\u4f60\u7684Alice\u7684\u516c\u5319\uff0c\u540c\u6837David\u4e5f\u53ef\u4ee5\u5411Alice\u8ba4\u8bc1\u4f60\u7684\u516c\u5319\uff0c\u8fd9\u6837David\u5c31\u6210\u4e3a\u4f60\u548cAlice\u4e4b\u95f4\u7684\u201c\u4ecb\u7ecd\u4eba\u201d\u3002\u8fd9\u6837Alice\u6216David\u5c31\u53ef\u4ee5\u653e\u5fc3\u5730\u628aDavid\u7b7e\u8fc7\u5b57\u7684Alice\u7684\u516c\u5319\u4e0a\u8f7d\u5230BBS\u4e0a\u8ba9\u4f60\u53bb\u62ff\uff0c\u6ca1\u4eba\u53ef\u80fd\u53bb\u7be1\u6539\u5b83\u800c\u4e0d\u88ab\u4f60\u53d1\u73b0\u5373\u4f7f\u662fBBS\u7684\u7ba1\u7406\u5458\u3002\u8fd9\u5c31\u662f\u4ece\u516c\u5171\u6e20\u9053\u4f20\u9012\u516c\u5319\u7684\u5b89\u5168\u624b\u6bb5\u3002<\/p>\n
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\u5bf9\u4e8e\u90a3\u4e9b\u975e\u5e38\u5206\u6563\u7684\u4eba\u4eec\uff0cPGP\u66f4\u8d5e\u6210\u4f7f\u7528\u79c1\u4eba\u65b9\u5f0f\u7684\u5bc6\u5319\u8f6c\u4ecb\u65b9\u5f0f\uff0c\u56e0\u4e3a\u8fd9\u6837\u6709\u673a\u7684\u975e\u5b98\u65b9\u66f4\u80fd\u53cd\u6620\u51fa\u4eba\u4eec\u81ea\u7136\u7684\u793e\u4f1a\u4ea4\u5f80\uff0c\u800c\u4e14\u4eba\u4eec\u4e5f\u80fd\u81ea\u7531\u5730\u9009\u62e9\u4fe1\u4efb\u7684\u4eba\u6765\u4ecb\u7ecd\u3002\u603b\u4e4b\u548c\u4e0d\u8ba4\u8bc6\u7684\u4eba\u4eec\u89c1\u9762\u4e00\u6837\u3002\u6bcf\u4e2a\u516c\u5319\u6709\u81f3\u5c11\u4e00\u4e2a\u201c\u7528\u6237\u540d\u201d(User ID)\uff0c\u8bf7\u5c3d\u91cf\u7528\u81ea\u5df1\u7684\u5168\u540d\uff0c\u6700\u597d\u518d\u52a0\u4e0a\u672c\u4eba\u7684Email\u5730\u5740\uff0c\u4ee5\u514d\u6df7\u6dc6\u3002<\/p>\n
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\u4e0b\u9762\uff0c\u6211\u8bb2\u8bb2\u5982\u4f55\u901a\u8fc7\u7535\u8bdd\u8ba4\u8bc1\u5bc6\u5319\u3002\u6bcf\u4e2a\u5bc6\u5319\u6709\u5b83\u4eec\u81ea\u5df1\u7684\u6807\u8bc6\uff08keyID\uff09\uff0ckeyID\u662f\u4e00\u4e2a\u516b\u4f4d\u5341\u516d\u8fdb\u5236\u6570\uff0c\u4e24\u4e2a\u5bc6\u5319\u5177\u6709\u76f8\u540ckeyID\u7684\u53ef\u80fd\u6027\u662f\u51e0\u5341\u4ebf\u5206\u4e4b\u4e00\uff0c\u800c\u4e14PGP\u8fd8\u63d0\u4f9b\u4e86\u4e00\u79cd\u66f4\u53ef\u9760\u7684\u6807\u8bc6\u5bc6\u5319\u7684\u65b9\u6cd5\uff1a\u201c\u5bc6\u5319\u6307\u7eb9\u201d(keys fingerprint)\u3002\u6bcf\u4e2a\u5bc6\u5319\u5bf9\u5e94\u4e00\u4e32\u6570\u5b57\uff08\u5341\u516d\u4e2a\u516b\u4f4d\u5341\u516d\u8fdb\u5236\u6570\uff09\uff0c\u8fd9\u4e2a\u6570\u5b57\u91cd\u590d\u7684\u53ef\u80fd\u5c31\u66f4\u5fae\u4e4e\u5176\u5fae\u4e86\u3002\u800c\u4e14\u4efb\u4f55\u4eba\u65e0\u6cd5\u6307\u5b9a\u751f\u6210\u4e00\u4e2a\u5177\u6709\u67d0\u4e2a\u6307\u7eb9\u7684\u5bc6\u5319\uff0c\u5bc6\u5319\u662f\u968f\u673a\u751f\u6210\u7684\uff0c\u4ece\u6307\u7eb9\u4e5f\u65e0\u6cd5\u53cd\u63a8\u51fa\u5bc6\u5319\u6765\u3002\u8fd9\u6837\u4f60\u62ff\u5230\u67d0\u4eba\u7684\u516c\u5319\u540e\u5c31\u53ef\u4ee5\u548c\u4ed6\u5728\u7535\u8bdd\u4e0a\u6838\u5bf9\u8fd9\u4e2a\u6307\u7eb9\uff0c\u4ece\u800c\u8ba4\u8bc1\u4ed6\u7684\u516c\u5319\u3002\u5982\u679c\u4f60\u65e0\u6cd5\u548cAlice\u901a\u7535\u8bdd\u7684\u8bdd\uff0c\u4f60\u53ef\u4ee5\u548cDavid\u901a\u7535\u8bdd\u8ba4\u8bc1David\u7684\u516c\u5319\uff0c\u4ece\u800c\u901a\u8fc7David\u8ba4\u8bc1\u4e86Alice\u7684\u516c\u5319\uff0c\u8fd9\u5c31\u662f\u76f4\u63a5\u8ba4\u8bc1\u548c\u95f4\u63a5\u4ecb\u7ecd\u7684\u7ed3\u5408\u3002<\/p>\n
\u8fd9\u6837\u53c8\u5f15\u51fa\u4e00\u79cd\u65b9\u6cd5\uff0c\u5c31\u662f\u628a\u5177\u4e0d\u540c\u4eba\u7b7e\u540d\u7684\u81ea\u5df1\u7684\u516c\u5319\u6536\u96c6\u5728\u4e00\u8d77\uff0c\u53d1\u9001\u5230\u516c\u5171\u573a\u5408\uff0c\u8fd9\u6837\u53ef\u4ee5\u5e0c\u671b\u5927\u90e8\u5206\u4eba\u81f3\u5c11\u8ba4\u8bc6\u5176\u4e2d\u4e00\u4e2a\u4eba\uff0c\u4ece\u800c\u95f4\u63a5\u8ba4\u8bc1\u4e86\u4f60\u7684\u516c\u5319\u3002<\/p>\n
\u540c\u6837\u4f60\u7b7e\u4e86\u670b\u53cb\u7684\u516c\u5319\u540e\u5e94\u8be5\u5bc4\u56de\u7ed9\u4ed6\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u8ba9\u4ed6\u53ef\u4ee5\u901a\u8fc7\u4f60\u88ab\u4f60\u5176\u4ed6\u670b\u53cb\u8ba4\u8bc1\u3002\u6709\u70b9\u610f\u601d\u5427\uff0c\u548c\u73b0\u5b9e\u793e\u4f1a\u4e2d\u4eba\u4eec\u7684\u4ea4\u5f80\u4e00\u6837\u3002PGP\u4f1a\u81ea\u52a8\u4e3a\u4f60\u627e\u51fa\u4f60\u62ff\u5230\u7684\u516c\u5319\u4e2d\u6709\u54ea\u4e9b\u662f\u4f60\u7684\u670b\u53cb\u4ecb\u7ecd\u6765\u7684\uff0c\u90a3\u4e9b\u662f\u4f60\u670b\u53cb\u7684\u670b\u53cb\u4ecb\u7ecd\u6765\u7684\uff0c\u54ea\u4e9b\u5219\u662f\u670b\u53cb\u7684\u670b\u53cb\u7684\u670b\u53cb\u4ecb\u7ecd\u7684\u2026\u2026\u5b83\u4f1a\u5e2e\u4f60\u628a\u5b83\u4eec\u5206\u4e3a\u4e0d\u540c\u7684\u4fe1\u4efb\u7ea7\u522b\uff0c\u8ba9\u4f60\u53c2\u8003\u51b3\u5b9a\u5bf9\u5b83\u4eec\u7684\u4fe1\u4efb\u7a0b\u5ea6\u3002\u4f60\u53ef\u4ee5\u6307\u5b9a\u67d0\u4eba\u6709\u51e0\u5c42\u8f6c\u4ecb\u516c\u5319\u7684\u80fd\u529b\uff0c\u8fd9\u79cd\u80fd\u529b\u662f\u968f\u7740\u8ba4\u8bc1\u7684\u4f20\u9012\u800c\u9012\u51cf\u7684\u3002<\/p>\n
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