on getSignature (adrparams, url, consumerSecret, tokenSecret="", method="GET") {

	local (s = "");

	for adr in adrparams {

		s = s + nameof (adr^) + "=" + string.urlencode (adr^) + "&"};

	s = method + string.urlencode (url) + "&" + string.urlencode (s);

	local (key = string.urlencode (consumerSecret) + "&" + string.urlencode (tokenSecret));

	s = base64.encode (OAuth.getHmac (s, key), 255);

	return (s)}