Add TypeScript types for types

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

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

**Priority**: Low/Medium

Start by locating the controllers area mentioned in the issue and determine which TypeScript types and encryption behavior are currently present. No file, test, or entry point is specified, so first clarify the intended configuration surface and supported defaults; done means controllers have configurable encryption with sensible defaults and coverage for the resulting behavior.

Written by the indexing model from the issue text.