Handle edge cases in encryption

**Description**
Currently helpers lacks proper pagination support.

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

**Priority**: Low/Medium

Start by locating the helpers referenced in the description and checking how pagination is currently handled. Clarify the mismatch between the encryption title and pagination request, then define done as configurable pagination with documented sensible defaults and coverage for the stated edge cases.

Written by the indexing model from the issue text.