Secure Wireless Pairing via Low-Power Broadcast Zone
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Solution Overview
Problem
Current secure pairing schemes for wireless devices often require significant user interaction or additional hardware, such as NFC chips, microphones, or accelerometers, which can be cumbersome and inconvenient.
Innovation Solution
A system and method for secure zone pairing using low-power broadcast messages with pairing information, allowing wireless devices to pair automatically within a broadcast zone without the need for explicit user input or additional hardware, by transmitting and receiving indications of device presence based on the broadcast message.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional secure pairing schemes are used, then security is improved, but user interaction complexity increases
Solution Approach 1:
The system enables devices to perform pairing automatically without requiring user intervention. The host device broadcasts pairing information and the guest device autonomously responds by transmitting its identifier, achieving self-service pairing while maintaining security through automated authentication mechanisms.
Solution Approach 2:
The host device performs preliminary actions by broadcasting pairing information before the actual pairing occurs. This preliminary broadcast contains all necessary pairing parameters in advance, allowing the guest device to automatically respond without requiring real-time user input during the pairing process.
2Reliability
If additional hardware components are added, then pairing security is improved, but device complexity increases
Solution Approach 1:
The patent makes the existing transceiver perform multiple functions: it serves both as the communication interface for data exchange and as the authentication mechanism for secure pairing. This eliminates the need for separate dedicated pairing hardware, achieving universal functionality with existing components.
Solution Approach 2:
The invention extracts the pairing authentication function from separate hardware components and integrates it into the existing transceiver communication protocol. By removing the dependency on additional hardware like NFC chips or specialized authentication devices, the system achieves security without extra hardware complexity.
3Ease of operation
If automated pairing is implemented, then ease of operation is improved, but security verification is worsened
Solution Approach 1:
The system implements feedback mechanisms where the guest device transmits its identifier in response to the host's broadcast, and the host verifies this response. This feedback loop ensures that automated pairing is secured through mutual verification, where each device confirms the other's presence and authenticity automatically.
Solution Approach 2:
The host device performs preliminary verification by broadcasting pairing information that includes authentication parameters. The guest device must respond with its identifier, which the host pre-verify against the broadcast parameters, ensuring security is built into the automated process before full pairing occurs.
Data Source
AI summary
A method and system of secure zone pairing. Using the method, a low-power broadcast message is generated by a pairing device and transmitted within a broadcast zone, where the low-power broadcast message includes pairing information. A host device that is within the broadcast zone receives the low-power broadcast message and transmits a first indication that the host device is within the broadcast zone. A guest device that is within the broadcast zone receives the low-power broadcast message and transmits a second indication that the guest device is within the broadcast zone. The method pairs the host device and the guest device based on the pairing information, the first indication, and the second indication.