PNG  IHDR;IDATxܻn0K )(pA 7LeG{ §㻢|ذaÆ 6lذaÆ 6lذaÆ 6lom$^yذag5bÆ 6lذaÆ 6lذa{ 6lذaÆ `}HFkm,mӪôô! x|'ܢ˟;E:9&ᶒ}{v]n&6 h_tڠ͵-ҫZ;Z$.Pkž)!o>}leQfJTu іچ\X=8Rن4`Vwl>nG^is"ms$ui?wbs[m6K4O.4%/bC%t Mז -lG6mrz2s%9s@-k9=)kB5\+͂Zsٲ Rn~GRC wIcIn7jJhۛNCS|j08yiHKֶۛkɈ+;SzL/F*\Ԕ#"5m2[S=gnaPeғL lذaÆ 6l^ḵaÆ 6lذaÆ 6lذa; _ذaÆ 6lذaÆ 6lذaÆ RIENDB` signKey = $signKey; } /** * Add an HTTP signature to manipulation parameters. * @param string $path The resource path. * @param array $params The manipulation parameters. * @return array The updated manipulation parameters. */ public function addSignature($path, array $params) { return array_merge($params, ['s' => $this->generateSignature($path, $params)]); } /** * Validate a request signature. * @param string $path The resource path. * @param array $params The manipulation params. * @throws SignatureException */ public function validateRequest($path, array $params) { if (!isset($params['s'])) { throw new SignatureException('Signature is missing.'); } if ($params['s'] !== $this->generateSignature($path, $params)) { throw new SignatureException('Signature is not valid.'); } } /** * Generate an HTTP signature. * @param string $path The resource path. * @param array $params The manipulation parameters. * @return string The generated HTTP signature. */ public function generateSignature($path, array $params) { unset($params['s']); ksort($params); return md5($this->signKey.':'.ltrim($path, '/').'?'.http_build_query($params)); } }