Secure Mobile Storage for Digital Vehicle Key Reservation
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Solution Overview
Problem
Existing storage solutions for mobile user devices do not adequately secure and manage sensitive data, particularly for motor vehicles, and lack efficient handling of key generation information for digital access.
Innovation Solution
A storage device with a secure and insecure area, managed by a storage management system, reserves space for key generation information and dynamically releases it upon request, ensuring secure and economical handling of data, with separate power supply and access control.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secure storage area is implemented for sensitive data, then data security is improved, but device complexity increases
Solution Approach 1:
The storage system is divided into a secure storage area and an insecure storage area, with the secure area specifically designed for sensitive data such as key generation information. This segmentation allows high-security data to be isolated with dedicated security measures while other data remains in the standard insecure area, thus improving overall data security without making the entire storage system overly complex.
Solution Approach 2:
The storage management system proactively reserves storage sections in the secure storage area for key generation information before actual storage operations occur. This preliminary reservation ensures that sensitive data always has a pre-prepared secure location, eliminating the need for complex real-time security decisions during data operations and simplifying the overall system architecture.
2Reliability
If storage space is reserved for key generation information, then security is improved, but storage availability deteriorates
Solution Approach 1:
The storage management system dynamically adjusts storage section reservations based on actual needs. When key generation information is present, the secure storage sections are reserved and protected; when such information is absent or transferred, the reservations are released and the storage sections become available for other uses. This dynamic approach maintains high security for sensitive data while maximizing storage availability during normal operations.
Solution Approach 2:
The system releases reserved storage sections in the secure storage area when key generation information is no longer needed or has been transferred to the vehicle. This recovery of reserved storage space allows the same secure storage sections to be reused for other purposes, thereby maintaining security posture while improving overall storage availability and utilization.
3Reliability
If a secure storage area with separate power supply is implemented, then data integrity is improved, but device complexity increases
Solution Approach 1:
The power supply system is segmented into a first power supply for the secure storage area and a second power supply for the rest of the mobile user device. This segmentation ensures that the secure storage area maintains operational integrity even when the main device experiences power issues, thereby improving data integrity while keeping the power supply architecture relatively simple through clear functional separation.
Data Source
AI summary
A storage device for a mobile user device includes a secure storage area and a storage management system configured to manage access to the secure storage area. The storage management system is further configured to reserve a storage section in the secure storage area for key generation information of a digital key for a motor vehicle and to release a part of the reserved storage section in response to a release request.