This is a really great article. The level of detail is perfect. I feel that I could implement a similar encryption system as a proof of concept after reading it

This is a really great article. The level of detail is perfect. I feel that I could implement a similar encryption system as a proof of concept after reading it. It seems so obvious but it really does go against the grain of many of the more common approaches (as explained in the article) because respecting the privacy of a user is so unusual.