code: Key getSharedSecretKey(JwtConsumerConfig config) throws KeyException {
  		if (config == null) {
  			if (tc.isDebugEnabled()) {
  				Tr.debug(tc, "JWT consumer config object is null");
  			}
  			return null;
  		}
  		String sharedKey = config.getSharedKey();
  		return createKeyFromSharedKey(sharedKey);
  	}
docs: Creates a Key object from the shared key specified in the provided
  configuration.