Car Sharing Encryption Code Update Mechanism
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Solution Overview
Problem
The existing car sharing systems face security challenges as they lack robust authentication mechanisms, allowing unauthorized use of vehicles when communication between the mobile terminal and car share device is tapped and encoded.
Innovation Solution
A car sharing system that includes a car share device and an encryption code updating unit, which verifies an electronic key ID through wireless communication, uses a mobile terminal as a vehicle key, and updates encryption codes to prevent unauthorized access by switching between valid and invalid states, ensuring secure actuation of on-board devices.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a mobile terminal is used as an electronic key for car sharing, then ease of operation is improved, but security deteriorates due to potential tapping and encoding of communication
Solution Approach 1:
The encryption code is dynamically updated from a first encryption code to a second encryption code when the mobile terminal and car share device are reconnected. This dynamic change prevents static code exploitation and ensures that even if communication is tapped during one session, the stolen codes become invalid upon reconnection, thus resolving the security vulnerability while maintaining ease of operation.
2Reliability
If encryption code updating is implemented, then security is improved, but device complexity increases
Solution Approach 1:
The system performs preliminary authentication using the first encryption code before updating to the second encryption code. This preliminary action ensures secure verification of the mobile terminal's identity before code updates occur, maintaining security while automating the complexity management. The car share device automatically handles the encryption code update process without requiring user intervention, thus managing device complexity internally.
Data Source
AI summary
The car sharing system includes a car share device and an encryption code updating unit. The car share device is configured to perform wireless communicate with a mobile terminal that is operable as a vehicle key. The encryption code updating unit updates a first encryption code, which was used during a previous connection of the mobile terminal and the car share device, to a second encryption code, which differs from the first encryption code, when the mobile terminal and the car share device are reconnected.