/**
 * Configures the authentication providers.
 *
 * @param auth a builder
 * @throws Exception ex
 */
@Override
protected void configure(AuthenticationManagerBuilder auth) throws Exception {
	OpenIDAuthenticationProvider openidProvider = new OpenIDAuthenticationProvider();
	openidProvider.setAuthenticationUserDetailsService(new SimpleUserService());
	auth.authenticationProvider(openidProvider);

	RememberMeAuthenticationProvider rmeProvider = new RememberMeAuthenticationProvider(Config.APP_SECRET_KEY);
	auth.authenticationProvider(rmeProvider);

	JWTAuthenticationProvider jwtProvider = new JWTAuthenticationProvider();
	auth.authenticationProvider(jwtProvider);

	LDAPAuthenticationProvider ldapProvider = new LDAPAuthenticationProvider();
	auth.authenticationProvider(ldapProvider);
}
 

@Bean
public RememberMeAuthenticationProvider rememberMeAuthenticationProvider() {
    return new RememberMeAuthenticationProvider(env.getProperty("appconf.security.rememberme.key"));
}