/**
* @param Context $context
* @param array|object $payload
* @param string|resource $key
* @param string $jwsAlgorithm
* @param array $extraHeaders
*
* @return string
*/
public static function encode(Context $context, $payload, $key, $jwsAlgorithm, $extraHeaders = [])
{
$header = array_merge(['alg' => '', 'typ' => 'JWT'], $extraHeaders);
$hashAlgorithm = $context->jwsAlgorithms()->get($jwsAlgorithm);
if (null == $hashAlgorithm) {
throw new JoseJwtException(sprintf('Unknown algorithm "%s"', $jwsAlgorithm));
}
$header['alg'] = $jwsAlgorithm;
$payloadString = StringUtils::payload2string($payload, $context->jsonMapper());
$signingInput = implode('.', [UrlSafeB64Encoder::encode(json_encode($header)), UrlSafeB64Encoder::encode($payloadString)]);
$signature = $hashAlgorithm->sign($signingInput, $key);
$signature = UrlSafeB64Encoder::encode($signature);
return $signingInput . '.' . $signature;
}
