Collocated User Pairing with Proximity Checks Against Replay Attacks
Find Innovative SolutionsGenerate Solutions
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 implemented to detect proximity between 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 deteriorates
Solution Approach 1:
The system performs preliminary actions by detecting device proximity through radio signal strength comparison before initiating the pairing process. The first device determines whether the second device is within a threshold distance, and only then proceeds to generate and exchange pairing codes. This preliminary proximity verification prevents replay attacks by ensuring devices are physically collocated before establishing trusted communication.
Solution Approach 2:
The patent introduces an intermediary mechanism using radio signal strength as a mediator to verify physical proximity between devices. Instead of relying solely on cryptographic protocols, the system uses the radio signal itself as an intermediary proof of collocation. The signal strength comparison acts as a trusted intermediary that confirms devices are physically close, thereby preventing remote replay attacks.
2Reliability
If proximity detection and secure pairing protocols are implemented, then security against replay attacks is improved, but device complexity and processing requirements increase
Solution Approach 1:
The pairing process is segmented into distinct phases: (1) proximity detection through radio signal monitoring, (2) generation of unique pairing codes based on user profile data, (3) exchange and verification of pairing codes, and (4) establishment of trusted communication. This segmentation allows each phase to be optimized independently and makes the complex security protocol more manageable and implementable.
Solution Approach 2:
The system changes parameters dynamically during the pairing process. Radio signal strength thresholds are adjusted based on environmental conditions, pairing code complexity is modified based on user profile data, and verification parameters are adapted based on the detected proximity level. This parameter adaptation allows the system to maintain high security while reducing complexity in low-risk scenarios.
3Measurement precision
If radio signal strength monitoring is used for proximity detection, then accurate collocation identification is achieved, but energy consumption increases
Solution Approach 1:
Instead of continuously monitoring radio signal strength, the system employs periodic detection at critical moments during the pairing process. The radio signal monitoring is activated periodically to detect the presence and proximity of potential pairing devices, then enters low-power mode between detections. This periodic action maintains measurement precision when needed while significantly reducing overall energy consumption.
Solution Approach 2:
The system uses the existing Bluetooth radio infrastructure to perform proximity detection, leveraging the same hardware components already required for communication. The radio signal strength monitoring repurposes the communication radio's inherent capabilities rather than requiring separate dedicated sensing hardware, thereby avoiding additional energy consumption from extra components.
Data Source
Figure 1
Figure 2
Figure 3
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.