I’m new to HA. I have a HA Green and HA VPE which I’ve just begun setting up. I was suprised it connected over web browser and app through http not https and didn’t have a force https setting. In some ways I understand why, in others I don’t (but that’s not my question).
So then I presumed VPE was connecting to HA over http and some things online say it can’t do https (even if you set it up on HA via self certs or Let’s Encrypt, etc). But I had to reset the VPE and this says the VPE stores
“The encryption key that is used to encrypt the communication between Home Assistant Voice Preview Edition and your Home Assistant hub”
Is this just encrypting the data or connecting over https?
If just encrypting does the app encrypt too? Or do I need to set up https and mess around with certificates?
Also, does anyone know if VPE does the STT processing and then sends text to HA or is it sending a voice file which then undergoes STT on HA? (I have STT processing set up as Full Local)
Thanks for any help 
(To clarify if needed: I have patchy knowledge of networking. My understanding is: with http someone on the same network (LAN in this case) can snoop and see the data. With https it’s encrypted so they can’t. But I can also encrypt a file on my phone, send it to my PC over http and then unencrypt it on PC and they can’t see that. Hence wondering if the ‘encryption key’ is an https one or seperate).