Add rate limiting for encryption

**Problem**
When working with utils, the error messages could be more descriptive.

**Suggestion**
Improve error handling and add detailed error messages.

**Context**
This would help with debugging and maintenance.

Start by locating the utils implementation and reviewing how encryption errors are currently handled. Clarify the intended rate-limiting behavior and descriptive error messages, then define focused checks that show the requested behavior is complete.

Written by the indexing model from the issue text.