/**
* @param string $input
* @return array
* @throws InvalidJWTException
*/
public static function deserialize($input)
{
$e_parts = explode(IBasicJWT::SegmentSeparator, $input);
if (count($e_parts) < 2) {
throw new InvalidJWTException(sprintf('%s has only 2 or less encoded parts!'));
}
$e_header = $e_parts[0];
$e_payload = $e_parts[1];
$e_signature = count($e_parts) > 2 ? $e_parts[2] : '';
$header = JOSEHeaderSerializer::deserialize($e_header);
$payload = $header->getType()->getString() === 'JWT' ? JWTClaimSetSerializer::deserialize($e_payload) : JWTRawSerializer::deserialize($e_payload);
$signature = !empty($e_signature) ? JWTRawSerializer::deserialize($e_signature) : '';
return array($header, $payload, $signature);
}
/**
* https://tools.ietf.org/html/rfc7516#section-9
* @param string $compact_serialization
* @return IBasicJWT
* @throws InvalidJWKType
* @throws InvalidCompactSerializationException
*/
public static function build($compact_serialization)
{
$segments = explode(IBasicJWT::SegmentSeparator, $compact_serialization);
// JWSs have three segments separated by two period ('.') characters.
// JWEs have five segments separated by four period ('.') characters.
switch (count($segments)) {
case 3:
// JWS or unsecured one
$header = JOSEHeaderSerializer::deserialize($segments[0]);
if ($header->getAlgorithm()->getString() === 'none' && empty($segments[2])) {
return UnsecuredJWT::fromCompactSerialization($compact_serialization);
}
return JWSFactory::build(new JWS_CompactFormatSpecification($compact_serialization));
break;
case 5:
// JWE
return JWEFactory::build(new JWE_CompactFormatSpecification($compact_serialization));
break;
default:
throw new InvalidCompactSerializationException();
break;
}
return null;
}