The following code snippet comes from the Class "
org.apereo.cas.token.cipher.RegisteredServiceTokenTicketCipherExecutor"
which is in the package cas-server-support-token-core-5.3.6.
@Override
public String encode(final String data, final
Optional<RegisteredService> service) {
if (service.isPresent()) {
final RegisteredService registeredService = service.get();
if (supports(registeredService)) {
LOGGER.debug("Found signing and/or encryption keys for [{}]
in service registry to encode", registeredService.getServiceId());
final String encryptionKey =
getEncryptionKey(registeredService).get();
final String signingKey =
getSigningKey(registeredService).get();
final TokenTicketCipherExecutor cipher = new
TokenTicketCipherExecutor(encryptionKey, signingKey,
StringUtils.isNotBlank(encryptionKey),
StringUtils.isNotBlank(signingKey));
if (cipher.isEnabled()) {
return cipher.encode(data);
}
}
}
return encode(data);
}
@Override
public boolean supports(final RegisteredService registeredService) {
return getSigningKey(registeredService).isPresent() ||
getEncryptionKey(registeredService).isPresent();
}
/**
* Gets signing key.
*
* @param registeredService the registered service
* @return the signing key
*/
public Optional<String> getSigningKey(final RegisteredService
registeredService) {
if
(RegisteredServiceProperties.TOKEN_AS_SERVICE_TICKET_SIGNING_KEY.isAssignedTo(registeredService))
{
final String signingKey =
RegisteredServiceProperties.TOKEN_AS_SERVICE_TICKET_SIGNING_KEY.getPropertyValue(registeredService).getValue();
return Optional.of(signingKey);
}
return Optional.empty();
}
As seen from the "supports" method, jwt supports setting only one of "
EncryptionKey" and "SigningKey".
But if I only set one of them, "getEncryptionKey(registeredService).get()"
or "getSigningKey(registeredService).get()" in the "encode" method will
throw an error "java.util.NoSuchElementException: No value present"
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