Forgive me if I don't understand this correctly, but hasn't every content filter done this for years?
I've used Websense (Forcepoint) for several years, it has the ability to un-encrypt, analyse, and re-encrypt traffic to see if something is malicious. I know Barracuda also has an appliance that will do the same thing. I think even the Dell SonicWALLs can do it with the appropriate license...
What am I missing here?