I don't really see how that would help. The victim's computer expected to connect to the router, because the victim's computer was intentionally downloading and

I don't really see how that would help. The victim's computer expected to connect to the router, because the victim's computer was intentionally downloading and running dlls from the router. I don't think it would help with the initial compromise of the router either. Buffer overflows (for example) can be exploited over https just as well as http, and that would be similar for other cryptographic strategies.