Secure Ranging Parameter Generation in a Terminal Security Region
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Solution Overview
Problem
Wireless carrier communication technologies, such as UWB, face security vulnerabilities in ranging and positioning scenarios, leading to potential parameter leakage and threats to user information and property safety.
Innovation Solution
A ranging method utilizing a terminal device with a security region and a ranging chip, where a ranging security parameter is generated in the security region and communicated safely to the ranging chip, enhancing security by avoiding data leakage during the ranging process.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If wireless carrier communication technology (UWB) is used for ranging and positioning, then ranging and positioning functionality is achieved, but security vulnerabilities occur leading to parameter leakage
Solution Approach 1:
The terminal device is segmented into distinct functional modules: a processor with a security region for generating ranging security parameters, and a ranging chip for performing ranging operations. This segmentation isolates sensitive security operations from the ranging communication functions, preventing parameter leakage while maintaining ranging capability.
Solution Approach 2:
A security region acts as an intermediary between the processor and the ranging chip. The security region generates and manages ranging security parameters, which are then transmitted to the ranging chip through a secure interface. This intermediary structure ensures that sensitive parameters are handled in a controlled environment, preventing direct exposure and potential leakage.
2Reliability
If security region is introduced to generate ranging security parameter, then parameter security is improved, but device complexity increases
Solution Approach 1:
The security region is merged within the processor architecture, and the processor is integrated with the ranging chip in a single terminal device. This merging approach consolidates security functions into existing processor structures rather than requiring completely separate security hardware, thereby improving parameter security while minimizing the increase in device complexity.
Data Source
AI summary
A ranging method is performed using a terminal device including a processor and a ranging chip. The processor having a security region, and the security region is communicatively connected to the ranging chip. The ranging method includes: acquiring a session parameter generated from an initial communication between the terminal device and a device to be ranged; generating, in the security region, a ranging security parameter according to the session parameter; sending the ranging security parameter to the ranging chip via a communication channel between the security region and the ranging chip; and generating, by the ranging chip, a ranging time parameter according to the ranging security parameter, and performing, by the ranging chip, a ranging communication with the device to be ranged using the ranging time parameter to acquire a ranging result.