Data access method and electronic device
By using a Bloom filter to record location information in the TEE, the terminal device and the host only need to perform a hash calculation and signature verification once, which solves the problem of low efficiency caused by frequent changes in the location of the terminal device, achieves efficient signing and verification, and saves computing resources.
CN115186280BActive Publication Date: 2026-06-05INDUSTRIAL AND COMMERCIAL BANK OF CHINA
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- INDUSTRIAL AND COMMERCIAL BANK OF CHINA
- Filing Date
- 2022-07-12
- Publication Date
- 2026-06-05
AI Technical Summary
Technical Problem
In existing technologies, the frequent changes in the location of terminal devices during movement lead to low efficiency in location signature and verification, wasting computing resources.
Method used
Terminal devices use Bloom filters to record the location of trajectory information in a Trusted Execution Environment (TEE). Through hash calculation and private key signing, the host uses a public key to verify the hash value of the signature to improve efficiency.
Benefits of technology
It improves signing and verification efficiency, saves computing resources, and enhances data security.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN115186280B_ABST
Abstract
The application provides a data access method and an electronic device, and relates to the field of information security. The data access method extracts the latest N position information associated with a target event from the acquired trajectory information of a terminal device in a TEE. The terminal device performs hash calculation on a set Bloom filter in the TEE to obtain a first hash value, and signs the first hash value by using a private key, wherein the Bloom filter records each position information of the trajectory information. The terminal device sends an access request to a host. The terminal device receives data sent by the host after the access request is verified. The terminal device only needs to sign the first hash value by using the private key once, thereby improving the efficiency of signature and saving the computing resources on the basis of ensuring data security. When verifying the signature, the host only needs to verify the first hash value once, thereby improving the verification efficiency and saving the computing resources.
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