{"id":157,"date":"2016-01-09T08:50:42","date_gmt":"2016-01-09T08:50:42","guid":{"rendered":""},"modified":"2016-01-09T08:50:42","modified_gmt":"2016-01-09T08:50:42","slug":"","status":"publish","type":"post","link":"http:\/\/weizn.net\/?p=157","title":{"rendered":"HMAC"},"content":{"rendered":"

\n\t    HMAC\u662f\u5bc6\u94a5\u76f8\u5173\u7684\u54c8\u5e0c\u8fd0\u7b97\u6d88\u606f\u8ba4\u8bc1\u7801\uff08Hash-based Message Authentication Code\uff09,HMAC\u8fd0\u7b97\u5229\u7528\u54c8\u5e0c\u7b97\u6cd5\uff0c\u4ee5\u4e00\u4e2a\u5bc6\u94a5\u548c\u4e00\u4e2a\u6d88\u606f\u4e3a\u8f93\u5165\uff0c\u751f\u6210\u4e00\u4e2a\u6d88\u606f\u6458\u8981\u4f5c\u4e3a\u8f93\u51fa\u3002<\/span>\n<\/p>\n

\n\t \n<\/p>\n

\n\t\u539f\u7406<\/strong><\/span>\n<\/p>\n

\n\t    \u5b83\u9700\u8981\u4e00\u4e2a\u52a0\u5bc6\u7528\u6563\u5217\u51fd\u6570\uff08\u8868\u793a\u4e3aH\uff0c\u53ef\u4ee5\u662fMD5\u6216\u8005SHA-1\uff09\u548c\u4e00\u4e2a\u5bc6\u94a5K\u7528\u4ee5\u8ba1\u7b97\u6d88\u606f\u8ba4\u8bc1\u7801\u3002<\/span>\n<\/p>\n

\n\t    \u8ba1\u7b97HMAC\u9700\u8981\u4e00\u4e2a\u6563\u5217\u51fd\u6570hash\uff08\u53ef\u4ee5\u662fmd5\u6216\u8005sha-1\uff09\u548c\u4e00\u4e2a\u5bc6\u94a5key\u3002\u7528L\u8868\u793ahash\u51fd\u6570\u8f93\u51fa\u5b57\u7b26\u4e32\u957f\uff08md5\u662f16\uff09\uff0c\u7528B\u8868\u793a\u6570\u636e\u5757\u7684\u957f\u5ea6\uff08md5\u548csha-1\u7684\u5206\u5272\u6570\u636e\u5757\u957f\u90fd\u662f64\uff09\u3002\u5bc6\u94a5key\u7684\u957f\u5ea6\u53ef\u4ee5\u5c0f\u4e8e\u7b49\u4e8e\u6570\u636e\u5757\u957fB\uff0c\u5982\u679c\u5927\u4e8e\u6570\u636e\u5757\u957f\u5ea6\uff0c\u53ef\u4ee5\u4f7f\u7528hash\u51fd\u6570\u5bf9key\u8fdb\u884c\u8f6c\u6362\uff0c\u7ed3\u679c\u5c31\u662f\u4e00\u4e2aL\u957f\u7684key\u3002<\/span>
\n\u3000\u3000\u7136\u540e\u521b\u5efa\u4e24\u4e2aB\u957f\u7684\u4e0d\u540c\u5b57\u7b26\u4e32\uff1a<\/span>
\n\u3000\u3000innerpad = \u957f\u5ea6\u4e3aB\u7684 0\u00d736<\/span>
\n\u3000\u3000outterpad = \u957f\u5ea6\u4e3aB\u7684 0\u00d75C<\/span>
\n\u3000\u3000\u8ba1\u7b97\u8f93\u5165\u5b57\u7b26\u4e32str\u7684HMAC\uff1a<\/span>
\n\u3000\u3000hash(key ^ outterpad, hash(key ^ innerpad, str))<\/span>\n<\/p>\n

\n\t \n<\/p>\n

\n\t\u5e94\u7528<\/strong><\/span>\n<\/p>\n

\n\t\n<\/p>\n

\n\t    1\u3001HMAC\u7684\u4e00\u4e2a\u5178\u578b\u5e94\u7528\u662f\u7528\u5728\u201c\u8d28\u7591\/\u5e94\u7b54\u201d\uff08Challenge\/Response\uff09\u8eab\u4efd\u8ba4\u8bc1\u4e2d\u3002
\n\u8ba4\u8bc1\u6d41\u7a0b\uff1a\n<\/p>\n

\n\t    (1) \u5148\u7531\u5ba2\u6237\u7aef\u5411\u670d\u52a1\u5668\u53d1\u51fa\u4e00\u4e2a\u9a8c\u8bc1\u8bf7\u6c42\u3002
\n    (2) \u670d\u52a1\u5668\u63a5\u5230\u6b64\u8bf7\u6c42\u540e\u751f\u6210\u4e00\u4e2a\u968f\u673a\u6570\u5e76\u901a\u8fc7\u7f51\u7edc\u4f20\u8f93\u7ed9\u5ba2\u6237\u7aef\uff08\u6b64\u4e3a\u8d28\u7591\uff09\u3002
\n    (3) \u5ba2\u6237\u7aef\u5c06\u8be5\u968f\u673a\u503c\u4f5c\u4e3a\u5bc6\u94a5\uff0c\u7528\u6237\u5bc6\u7801\u8fdb\u884chmac\u8fd0\u7b97\uff0c\u7136\u540e\u63d0\u4ea4\u7ed9\u670d\u52a1\u5668\uff08\u6b64\u4e3a\u54cd\u5e94\uff09\u3002
\n    (4) \u4e0e\u6b64\u540c\u65f6\uff0c\u670d\u52a1\u5668\u4e5f\u4f7f\u7528\u8be5\u968f\u673a\u6570\u4e0e\u5b58\u50a8\u5728\u670d\u52a1\u5668\u6570\u636e\u5e93\u4e2d\u7684\u8be5\u5ba2\u6237\u5bc6\u94a5\u8fdb\u884chmac\u8fd0\u7b97\uff0c\u5982\u679c\u670d\u52a1\u5668\u7684\u8fd0\u7b97\u7ed3\u679c\u4e0e\u5ba2\u6237\u7aef\u4f20\u56de\u7684\u54cd\u5e94\u7ed3\u679c\u76f8\u540c\uff0c\u5219\u8ba4\u4e3a\u5ba2\u6237\u7aef\u662f\u4e00\u4e2a\u5408\u6cd5\u7528\u6237\u3002\n<\/p>\n

\n\t    2\u3001\u7528\u6765\u505a\u6d88\u606f\u7684\u5b8c\u6574\u6027\u68c0\u67e5\u3002\n<\/p>\n

\n\t      \u901a\u8baf\u53cc\u65b9A\u548cB\u5171\u4eab\u4e00\u4e2asecret key, A\u65b9\u5728\u53d1\u9001\u6570\u636e\u7ed9B\u7684\u65f6\u5019\uff0c\u5148\u5bf9\u8981\u53d1\u9001\u4fe1\u606f\u505a\u4e00\u4e2aHashing\u64cd\u4f5c(MD5 Hashing \u6216 SHA-1 Hashing)\uff0c\u7136\u540e\u518d\u5c06\u7ed3\u679c\u548c\u8fd9\u4e2a\u5171\u4eab\u7684secret key\u8fde\u63a5\u5728\u4e00\u8d77\u518d\u505aHashing\u64cd\u4f5c\uff0c\u5c06\u6700\u540e\u7ed3\u679c\u968f\u4fe1\u606f\u4e00\u8d77\u53d1\u7ed9B. B\u5728\u63a5\u6536\u5230\u8fd9\u4e2a\u4fe1\u606f\u65f6\uff0c\u4e5f\u5bf9\u4fe1\u606f\u505a\u540c\u6837\u64cd\u4f5c\uff0c\u5982\u679c\u7ed3\u679c\u8ddfA\u53d1\u8fc7\u6765\u7684\u4e00\u81f4\uff0c\u5219\u8ba4\u8bc1\u901a\u8fc7\uff1b\u5426\u5219\uff0c\u4e22\u5f03\u8be5\u4fe1\u606f\u5305\u3002\u5177\u4f53\u53c2\u8003RFC 2104\u6587\u6863\u3002https:\/\/www.ietf.org\/rfc\/rfc2104.txt<\/a>\n<\/p>\n

\n\t \n<\/p>\n

\n\t\u5b89\u5168\u6027<\/strong><\/span>\n<\/p>\n

\n\t    \u7531\u4e0a\u9762\u7684\u4ecb\u7ecd\uff0c\u6211\u4eec\u53ef\u4ee5\u770b\u51fa\uff0cHMAC\u7b97\u6cd5\u66f4\u8c61\u662f\u4e00\u79cd\u52a0\u5bc6\u7b97\u6cd5\uff0c\u5b83\u5f15\u5165\u4e86\u5bc6\u94a5\uff0c\u5176\u5b89\u5168\u6027\u5df2\u7ecf\u4e0d\u5b8c\u5168\u4f9d\u8d56\u4e8e\u6240\u4f7f\u7528\u7684HASH\u7b97\u6cd5\uff0c\u5b89\u5168\u6027\u4e3b\u8981\u6709\u5982\u4e0b\u4fdd\u8bc1\uff1a\n<\/p>\n

\n\t    (1) \u4f7f\u7528\u7684\u5bc6\u94a5\u662f\u53cc\u65b9\u4e8b\u5148\u7ea6\u5b9a\u7684\uff0c\u7b2c\u4e09\u65b9\u4e0d\u53ef\u80fd\u77e5\u9053\u3002\u7531\u4ecb\u7ecd\u7684\u5e94\u7528\u6d41\u7a0b\u53ef\u4ee5\u770b\u51fa\uff0c\u4f5c\u4e3a\u975e\u6cd5\u622a\u83b7\u4fe1\u606f\u7684\u7b2c\u4e09\u65b9\uff0c\u80fd\u591f\u5f97\u5230\u7684\u4fe1\u606f\u53ea\u6709\u4f5c\u4e3a\u201c\u8d28\u7591\u201d\u7684\u968f\u673a\u6570\u548c\u4f5c\u4e3a\u201c\u54cd\u5e94\u201d\u7684HMAC\u7ed3\u679c\uff0c\u65e0\u6cd5\u6839\u636e\u8fd9\u4e24\u4e2a\u6570\u636e\u9006\u5411\u63a8\u7b97\u51fa\u5bc6\u7801\u3002          <\/span> \n<\/p>\n

\n\t\u3000\u3000\u5728\u8fd9\u4e2a\u8fc7\u7a0b\u4e2d\uff0c\u53ef\u80fd\u906d\u5230\u5b89\u5168\u653b\u51fb\u7684\u662f\u670d\u52a1\u5668\u53d1\u9001\u7684\u968f\u673a\u503c\u548c\u7528\u6237\u53d1\u9001\u7684hmac\u7ed3\u679c\uff0c\u800c\u5bf9\u4e8e\u622a\u83b7\u4e86\u8fd9\u4e24\u4e2a\u503c\u7684\u9ed1\u5ba2\u800c\u8a00\u8fd9\u4e24\u4e2a\u503c\u662f\u6ca1\u6709\u610f\u4e49\u7684\uff0c\u7edd\u65e0\u83b7\u53d6\u7528\u6237\u5bc6\u7801\u7684\u53ef\u80fd\u6027\uff0c\u968f\u673a\u503c\u7684\u5f15\u5165\u4f7fhmac\u53ea\u5728\u5f53\u524d\u4f1a\u8bdd\u4e2d\u6709\u6548\uff0c\u5927\u5927\u589e\u5f3a\u4e86\u5b89\u5168\u6027\u548c\u5b9e\u7528\u6027\u3002\u5927\u591a\u6570\u7684\u8bed\u8a00\u90fd\u5b9e\u73b0\u4e86hmac\u7b97\u6cd5\uff0c\u6bd4\u5982php\u7684mhash\u3001python\u7684hmac.py\u3001java\u7684MessageDigest\u7c7b\uff0c\u5728web\u9a8c\u8bc1\u4e2d\u4f7f\u7528hmac\u4e5f\u662f\u53ef\u884c\u7684\uff0c\u7528js\u8fdb\u884cmd5\u8fd0\u7b97\u7684\u901f\u5ea6\u4e5f\u662f\u6bd4\u8f83\u5feb\u7684\u3002<\/span><\/p>\n","protected":false},"excerpt":{"rendered":"

\n\tHMAC – hmac\u7684\u539f\u7406<\/strong><\/span>\n<\/p>\n

\n\t    \u57fa\u4e8e\u6563\u5217\u51fd\u6570\u7684\u6d88\u606f\u8ba4\u8bc1\u7801\u3002\u5b83\u9700\u8981\u4e00\u4e2a\u52a0\u5bc6\u7528\u6563\u5217\u51fd\u6570\uff08\u8868\u793a\u4e3aH\uff0c\u53ef\u4ee5\u662fMD5\u6216\u8005SHA-1\uff09\u548c\u4e00\u4e2a\u5bc6\u94a5K\u7528\u4ee5\u8ba1\u7b97\u6d88\u606f\u8ba4\u8bc1\u7801\u3002<\/span>\n<\/p>\n

\n\t    \u8ba1\u7b97HMAC\u9700\u8981\u4e00\u4e2a\u6563\u5217\u51fd\u6570hash\uff08\u53ef\u4ee5\u662fmd5\u6216\u8005sha-1\uff09\u548c\u4e00\u4e2a\u5bc6\u94a5key\u3002\u7528L\u8868\u793ahash\u51fd\u6570\u8f93\u51fa\u5b57\u7b26\u4e32\u957f\uff08md5\u662f16\uff09\uff0c\u7528B\u8868\u793a\u6570\u636e\u5757\u7684\u957f\u5ea6\uff08md5\u548csha-1…<\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[321],"tags":[],"class_list":["post-157","post","type-post","status-publish","format-standard","hentry"],"yoast_head":"\nHMAC - Wayne's Blog<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"http:\/\/weizn.net\/?p=157\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"HMAC - 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