Secure Device Pairing via Electronic Signature Verification
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Solution Overview
Problem
Public safety officers face difficulties in quickly and securely pairing their wireless accessory devices with selected mobile radios due to interference from other devices and the need to re-pair every work-shift, with existing technologies being costly and inefficient.
Innovation Solution
A method and apparatus for securely pairing devices by using a host device to initiate a scanning process, receive wireless pairing information from target devices, and establish a short-range communication link based on electronic signatures and user credentials, allowing for automatic re-pairing of previously signed target devices with the same user credential.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If out-of-band pairing technologies such as near-field communications are used, then pairing security is improved, but device cost increases
Solution Approach 1:
The patent introduces an electronic signature as an intermediary mechanism that mediates between the existing Bluetooth pairing technology and the security requirements. The electronic signature is generated based on device identifiers and pairing information, and verified without requiring additional hardware or out-of-band communication channels. This resolves the contradiction by achieving enhanced security through a software-based intermediary rather than expensive hardware modifications.
2Reliability
If pairing information is cleared when radios are returned to the multi-unit charger, then security is improved, but pairing time increases
Solution Approach 1:
The patent applies preliminary action by pre-generating electronic signatures during the initial pairing process. These signatures are stored and can be reused when the radio is returned to the charger, eliminating the need for complete re-pairing. The electronic signature serves as a preliminary authentication mechanism that remains valid across multiple use cycles, thus maintaining security while reducing repeated pairing time.
Solution Approach 2:
The system implements self-service through automatic verification of electronic signatures during the pairing process. When a radio is returned to the charger, the pairing process automatically retrieves and verifies the stored electronic signature without requiring manual user intervention or complete re-pairing. This self-verification mechanism maintains security protocols while significantly reducing the time required for re-pairing operations.
3Productivity
If multiple officers attempt to pair accessories simultaneously, then productivity is improved, but pairing accuracy deteriorates
Solution Approach 1:
The patent implements feedback mechanisms through the electronic signature verification process. Each device presents its electronic signature during pairing, and the system provides immediate feedback by verifying the signature against the expected value. This feedback loop ensures that even when multiple officers are pairing devices simultaneously, each pairing operation is accurately verified and matched to the correct radio, preventing cross-pairing errors while maintaining high productivity.
Data Source
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AI summary
A process for securely pairing devices. A host device receives an input indicating a user credential for logging into the host device and initiates a scanning process for discovering target devices available for pairing with the host device. During the scanning process, the host device receives wireless pairing information from a target device. The wireless pairing information includes a unique device identifier associated with the target device and an electronic signature generated as a function of a signature key stored at the target device and the unique device identifier. The host device compares the electronic signature with a run-time signature generated at the host device as a function of the user credential received at the host device and the unique device identifier. The host device then initiates a pairing process to establish a short-range communication link with the target device when the electronic signature matches with the run-time signature.