Collocated Device Pairing Using Proximity Checks Against Replay Attacks
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Solution Overview
Problem
Existing Bluetooth pairing methods are vulnerable to replay attacks and inadequate for securely identifying and pairing collocated devices, particularly in Bluetooth Low Energy systems, and do not effectively utilize user profile data for media content curation.
Innovation Solution
A system is configured to detect proximity of client devices using radio signals, generate secure pairing codes through asymmetric or symmetric key exchanges, and display collocation indicators, while curating media content based on user profiles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional Bluetooth pairing methods are used, then device compatibility and ease of pairing are maintained, but security against replay attacks is insufficient
Solution Approach 1:
The system performs preliminary actions by detecting device proximity through radio signal strength before initiating the pairing process. This preliminary detection ensures that only collocated devices can proceed with pairing, preventing replay attacks from remote devices while maintaining compatibility with existing Bluetooth protocols.
Solution Approach 2:
The system introduces an intermediary mechanism using radio signal strength detection as a mediator between device discovery and traditional pairing. This intermediary layer verifies physical proximity before allowing pairing operations, adding security without fundamentally changing the underlying Bluetooth pairing protocol.
2Reliability
If proximity detection is added to prevent replay attacks, then security is improved, but the pairing process becomes more complex
Solution Approach 1:
The system implements self-service by automatically detecting radio signal strength and determining device proximity without requiring user intervention. The proximity verification occurs transparently in the background, maintaining ease of operation while enhancing security against replay attacks.
Solution Approach 2:
Proximity detection is performed as a preliminary automatic check before pairing initiation. This preliminary action occurs seamlessly without adding visible steps for users, preserving simplicity while establishing security requirements.
3Reliability
If asymmetric key exchange is implemented for secure pairing, then security is enhanced, but computational overhead and pairing time increase
Solution Approach 1:
The system applies partial action by implementing asymmetric key exchange selectively based on proximity verification results. Only devices that pass the proximity check proceed to asymmetric key exchange, while others are rejected earlier. This partial application reduces overall computational overhead and pairing time while maintaining security for legitimate connections.
Solution Approach 2:
Radio signal strength detection and proximity verification are performed as preliminary actions before initiating computationally intensive asymmetric key exchange. This preliminary filtering ensures that asymmetric cryptography is only executed when physically justified, reducing unnecessary computational overhead and pairing time.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
Enhances security by preventing replay attacks and enables secure pairing of collocated devices, while allowing for personalized media content sharing among paired devices.
Implementation Method 1
detecting a radio signal generated by a second client device, wherein the radio signal comprises a signal strength
Data Source
AI summary
A system to perform operations that include: detecting, at a first client device, a second client device in proximity with the first client device; generating a pairing code in response to the detecting the second client device in proximity of the first client device; establishing a communication pathway between the first client device and the second client device based on at least the pairing code; and presenting a collocation indicator at the first client device based on the establishing the communication pathway, according to certain example embodiments.