Handle edge cases in encryption

**Description**
Currently models lacks proper sorting support.

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

**Priority**: Low/Medium

The issue provides no file, test, or entry point. First clarify whether the work concerns encryption edge cases or model sorting, then locate the affected model code and its existing tests. Done should mean the agreed edge cases or sorting behavior are covered and the relevant test suite passes.

Written by the indexing model from the issue text.