I am with you here. It sounds like the security benefit is the key rotation, which IMHO shouldn't have to be done every single time... If this is what the autho

I am with you here. It sounds like the security benefit is the key rotation, which IMHO shouldn't have to be done every single time... If this is what the author meant, then he would have written "key rotation" somewhere in the description?! Another way to secure the authentication is to use a One Time Password to authenticate.