求教,php如何实现java的加密算法hmac_sha1?
业精于勤,荒于嬉;行成于思,毁于随。
/** * @使用HMAC-SHA1算法生成oauth_signature签名值 * * @param $key 密钥 * @param $str 源串 * * @return 签名值 */ function get_signature($str, $key) { $signature = ""; if (function_exists(‘hash_hmac‘)) { $signature = base64_encode(hash_hmac("sha1", $str, $key, true)); } else { $blocksize = 64; $hashfunc = ‘sha1‘; if (strlen($key) > $blocksize) { $key = pack(‘H*‘, $hashfunc($key)); } $key = str_pad($key,$blocksize,chr(0x00)); $ipad = str_repeat(chr(0x36),$blocksize); $opad = str_repeat(chr(0x5c),$blocksize); $hmac = pack( ‘H*‘,$hashfunc( ($key^$opad).pack( ‘H*‘,$hashfunc( ($key^$ipad).$str ) ) ) ); $signature = base64_encode($hmac); } return $signature;
业精于勤,荒于嬉;行成于思,毁于随。