Percona Launches First-Ever Open Source Transparent Data Encryption for Postgres

For now as it also requires modifications to how WAL is handled. In another article they mention that they want to upstream those. The Percona version is exactly the same except for:

- Storage Manager (SMGR) API Exposure: Allows PostgreSQL extensions to integrate custom storage managers. This change was inspired by the patchset introduced to the community.

- WAL Read/Write API Exposure to hook into WAL read and write functions.