Developed and delivered a user-specific security key handling feature for car parameter management in the deanlee/openpilot repository. Focused on backend development using Python, the work introduced robust mechanisms for reading security keys from files and validating key criteria to ensure secure operations. The implementation emphasized error handling to prevent invalid or insecure key usage, aligning with product security requirements and enabling per-user key management. By integrating the SecOCKey into the car’s parameter workflow, the solution enhanced the repository’s security posture. The contribution reflects a targeted approach to feature delivery, prioritizing reliability and maintainability within the project’s backend infrastructure.