Wireless Device Trust Verification via Trusted Authority
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Solution Overview
Problem
Existing wireless devices face challenges in determining the trustworthiness of other devices, particularly in scenarios where malicious information may be processed from untrusted sources, and conventional verification methods require significant resources or infrastructure, such as public key infrastructure (PKI), which can be cumbersome and costly.
Innovation Solution
A computer-implemented verification method that employs trusted authorities to provide recommendations on the trustworthiness of wireless devices, allowing NFC readers to decide whether to process information from NFC tags without the need for signatures, certificates, or public/private key pairs, thereby reducing memory and setup burdens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional verification methods (PKI, signatures, certificates) are used to determine trustworthiness of wireless devices, then security and data integrity are improved, but device complexity and resource requirements increase significantly
Solution Approach 1:
The patent introduces a trusted authority as an intermediary that issues recommendations about device trustworthiness. Instead of implementing complex PKI infrastructure in each device, the system uses a centralized trusted authority that wireless devices can query for verification information, simplifying the overall system architecture while maintaining security.
Solution Approach 2:
The patent extracts the complex verification infrastructure (PKI, certificates, key pairs) from individual wireless devices and concentrates it in a separate trusted authority. This allows devices to have minimal verification components while still achieving secure verification through the external trusted authority.
2Reliability
If PKI infrastructure with signatures and certificates is deployed, then verification reliability is improved, but memory requirements and setup costs increase
Solution Approach 1:
By using a trusted authority as an intermediary, the system avoids storing large certificate structures and key pairs in device memory. Instead, devices store minimal verification data and obtain comprehensive verification information on-demand from the trusted authority, significantly reducing memory requirements.
Solution Approach 2:
The patent uses lightweight verification tokens or identifiers from the trusted authority that can be generated and discarded as needed, replacing the need for persistent, large-scale certificate storage. These lightweight verification objects consume minimal memory while providing equivalent security functionality.
Data Source
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AI summary
In some aspects of what is described here, a first wireless device detects proximity of a second wireless device (e.g., by a Near Field Communication (NFC) interface or another type of interface). Based on detecting proximity of the second wireless device, the first wireless device generates a recommendation request from information received from the second wireless device. The first wireless device sends the recommendation request to a trusted authority and receives a response. The response includes the trusted authority's recommendation whether to trust the second wireless device. The first wireless device can determine whether to trust the second wireless device based on the recommendation.