Transparent Column Encryption with Postgres

This is a follow on from Supabase's Vault[0] Launch in August. We're preparing to launch this on the platform, and wanted to do a deep-dive on how the encryption works.

You can see the previous discussion on the Vault here: https://news.ycombinator.com/item?id=32532313

[0] Vault: https://supabase.com/blog/supabase-vault