Two factor authentication with JWT and SMS

Hi,

I am trying to do two factor authentication using JWT and SMS code verification. Please direct me, how can I to do it? Should I extend NbPasswordAuthStrategy or something else, or maybe its impossible and I have create my own implementation?

I have implemented JWT authentication with NbPasswordAuthStrategy and on backend side with Spring Security at this moment, and now I need to extend it to 2FA.

Thanks.