Support filtering configuration

**Description**
Currently controllers lacks proper encryption support.

**Proposed solution**
Add configurable encryption with sensible defaults.

**Priority**: Low/Medium

Start by locating the controllers and the configuration entry points in the repository, then read how current controller settings are handled. Compare the existing behavior with the issue's encryption goal and identify the required defaults and configuration boundaries. Done means controllers support configurable encryption with sensible defaults and the relevant behavior is covered by verification.

Written by the indexing model from the issue text.