�PNG  IHDR��;���IDATx��ܻn�0���K�� �)(�pA��� ���7�LeG{�� �§㻢|��ذaÆ 6lذaÆ 6lذaÆ 6lom��$^�y���ذag�5bÆ 6lذaÆ 6lذa{���� 6lذaÆ �`����}H�Fkm�,�m����Ӫ���ô�ô!� �x�|'ܢ˟;�E:���9�&ᶒ�}�{�v]�n&�6� �h��_��t�ڠ͵-ҫ���Z;��Z$�.�P���k�ž)�!��o���>}l�eQfJ�T��u і���چ��\��X=8��Rن4`Vw�l�>����n�G�^��i�s��"ms�$�u��i��?w�bs[m�6�K4���O���.�4��%����/����b�C%��t ��M�ז� �-l�G6�mrz2���s�%�9��s@���-�k�9�=���)������k�B5����\��+͂�Zsٲ ��Rn��~G���R���C����� �wIcI��n7jJ���hۛNCS|���j0��8y�iHKֶۛ�k�Ɉ+;Sz������L/��F�*\��Ԕ�#"5��m�2��[S��������=�g��n�a�P�e�ғ�L�� lذaÆ 6l�^k��̱aÆ 6lذaÆ 6lذa;���� �_��ذaÆ 6lذaÆ 6lذaÆ ���R���IEND�B` 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)); } }