Q:  We are currently using SmithCart 7.22 version and I need to verify that it supports TLS 1.2 for internet connection as Authorize.net will be disabling TLS 1.0 & 1.1 versions .

A:  The Auth.Net sandbox has already been upgraded to TLS 1.2 so if you test you store against the auth.net sandbox and it works then you are good. If a test transaction against the auth.net sandbox does not work then you need to upgrade your smithcart.