Identity 2.0 sms使用令牌重置密码

Every time I see this brought up people confuse it with two factor authentication which is laid out in the new Identity 2.0 template. But is there a process in place to generate a usable (not 100 characters long) reset token for a user and deliver it through sms? Before I start to build my own method, I was hoping to see at least some advice on how to generate a secure token that is smaller (possible using PhoneNumberTokenProvider I assume??), and hopefully not have to alter my tables further.Every time I see this brought up people confuse