log.info(String.format("Configuring servlet with file '%s'", configurationFile));
Configuration conf = new Configuration();
conf.loadConfiguration(configurationFile);
KeystoreHandler store = new KeystoreHandler();
store.loadKeystore(KeystoreModel.fromMap(conf.getPropertySet("keystore")));
stamper = new Timestamper(store);
log.info("Servlet launched");
}