Bluetooth LE Authentication Capability Assessment
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Solution Overview
Problem
Bluetooth devices without user interfaces face complexity in connection management and authentication due to the lack of intuitive methods for establishing secure connections, especially when input/output functions vary across devices.
Innovation Solution
A method using Bluetooth technology that involves exchanging capability information, generating a random code for authentication through a user authentication service, and performing authentication based on specific methods like OOB, Passkey Entry, or Just Works, utilizing user-provided information such as passwords or biometrics, and employing algorithms like AES-CMAC for secure connection establishment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If Bluetooth authentication uses traditional methods without considering device capabilities, then authentication can be performed, but the complexity of connection management increases especially for devices without user interfaces
Solution Approach 1:
The patent applies local quality by tailoring the authentication method to each device's specific input/output capabilities. The system evaluates device capabilities (display, keyboard, NFC, etc.) and selects appropriate authentication schemes (OOB, Passkey Entry, Numeric Comparison, Just Works) for each device individually, making authentication easier without increasing overall system complexity.
Solution Approach 2:
The patent implements dynamics by making the authentication process adaptive rather than static. The system dynamically selects authentication methods based on real-time assessment of device capabilities and user presence, allowing the authentication complexity to match the actual needs of each connection scenario.
2Reliability
If Bluetooth authentication requires user interface interaction, then security can be enhanced, but devices without displays or user interfaces cannot perform authentication
Solution Approach 1:
The patent achieves universality by creating a multi-functional authentication system that works across diverse device types. It implements multiple authentication schemes (OOB for NFC devices, Passkey Entry for keyboard devices, Numeric Comparison for display devices, Just Works for simple devices) that can handle both devices with and without user interfaces, ensuring broad device compatibility while maintaining security.
Solution Approach 2:
The patent uses an intermediary approach by introducing capability assessment and adaptive scheme selection as intermediaries between the authentication requirement and the actual authentication execution. This intermediary layer translates diverse device capabilities into appropriate authentication methods, enabling secure authentication for all device types including those without traditional user interfaces.
3Ease of operation
If Bluetooth authentication uses multiple schemes based on device capabilities, then ease of operation improves, but the complexity of determining and implementing the specific method increases
Solution Approach 1:
The patent applies preliminary action by performing capability assessment and authentication scheme selection before the actual authentication process. The system evaluates device capabilities, determines user presence, and pre-selects the appropriate authentication method in advance, which simplifies the actual authentication execution and reduces operational complexity.
Solution Approach 2:
The patent implements feedback by using the results of capability assessment and user presence detection to dynamically select and adjust the authentication method. The system receives feedback about device capabilities and user interaction status, then adapts the authentication approach accordingly, balancing ease of operation with manageable complexity.
Data Source
AI summary
Disclosed is a method and an apparatus for a first device to perform authentication by using Bluetooth LE (Low Energy). The present invention provides a method and an apparatus comprising exchanging capability information with a second device; generating a random code for first authentication through a user authentication service based on the capability information; transmitting a write request message including the generated random code to the second device; receiving a write response message in response to the write request message from the second device; receiving an authentication indication message from the second device, wherein the authentication indication message includes state information indicating success or failure of the first authentication based on the random code; and transmitting an authentication complete message in response to the authentication indication message.