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Request validation

Each request is escorted with a query param "key" with a value of a sha1 cached query string and a salt key. Salt key should be generated on your side and provided at the start of integration. Valid characters are A-z, 0-9. Hashing should be done without any sorting of parameters.

The query param "key" value must match sha1([SALT KEY]+[QUERY STRING])

QUERY STRING does not need to be sorted before hashing.

$data = array(
            'callerId' => "danitestdev_s",
            'callerPassword' => "hidden",
			....
			whole query string
        );

$hash = sha1($salt.http_build_query($data));
$data['key'] = $hash;