/**
* @param Request $request
* @param Consumer $consumer
* @param Token $token
* @return string
*/
public function buildSignature(Request $request, Consumer $consumer, Token $token)
{
$signatureBase = $request->getSignatureBaseString();
$parts = array($consumer->getSecret(), null !== $token ? $token->getSecret() : '');
$parts = Util::urlencodeRFC3986($parts);
$key = implode('&', $parts);
return base64_encode(hash_hmac('sha1', $signatureBase, $key, true));
}
