Add Unit Tests for Global Utilities (Encryption, GlobalMessageConstants, ZiRedisCons)

 **Description:**
 - Missing tests for:
   - `Encryption.encrypt` / `decrypt` methods.
   - Constants in `GlobalMessageConstants`.
   - Key-building logic in `ZiRedisCons`.
   
 **Acceptance Criteria:**
 - Ensure round-trip encryption/decryption yields original data.
 - Validate all constants and key prefixes match expected patterns.