But not after the feedback program has finished?
"The information will be encrypted"
So that only Google can read it?
"and stored in the cloud"
Yes, of course. What can possibly go wrong.
Hope this fails in the grandest of fashions long before they go to market.
They just need to ensure that's the client side that deciphers the data, and that the private key never leaves the browser side neither. I think that can be audited through JS debug tools.
Anyway, this is Google. There’s no way they’re planning to client-side encrypt. Even if they did, they’d eventually realize it wasn’t generating enough indirect ad revenue to be too big to kill. At that point they’d ungracefully shut it down.
Until advances in mathematics or computation obsolete the crypto. We might decide that it doesn't matter within each respective patient's lifetime (a debate) but that is getting longer and longer.