Challenge-Response Proximity Verification Using Token-to-Symbol Mapping
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Solution Overview
Problem
Conventional pairing techniques for video conference devices in collaborative workspaces lack sufficient device authentication, leading to potential spoofing issues and insecure proximity verification.
Innovation Solution
Implementing a challenge-response proximity verification system using token-to-symbol mapping definitions, where an access server communicates with video conference devices and user devices to authenticate endpoints based on predetermined mappings, ensuring only authorized devices in close proximity can access secure communication channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional pairing techniques are used for device authentication, then the pairing process is simple and quick, but the authentication security is insufficient and vulnerable to spoofing
Solution Approach 1:
The authentication process is segmented into multiple distinct phases: initial token transmission, challenge token generation, response verification, and secure channel establishment. Each phase performs a specific authentication function, collectively providing robust security while maintaining manageable complexity through modular design
Solution Approach 2:
The system performs preliminary actions by pre-establishing token-to-symbol mapping relationships and pre-generating challenge tokens before the actual authentication occurs. This allows the verification process to proceed efficiently with predetermined security parameters already in place
Solution Approach 3:
Token-to-symbol mapping definitions serve as an intermediary mechanism between the device identifier and the authenticated token. This mapping layer adds a security buffer that prevents direct exposure of authentication credentials while enabling verification through symbolic representation
2Reliability
If multiple authentication verification steps are implemented, then spoofing is prevented and security is enhanced, but the verification time and processing overhead increase
Solution Approach 1:
The authentication system employs periodic action through time-stamped challenge tokens and sequential verification steps. Each authentication challenge occurs at a specific time interval with predetermined tokens, allowing verification without requiring continuous or prolonged interaction
Solution Approach 2:
The system changes parameters by using different token values and mapping relationships for each authentication challenge. This dynamic parameter variation prevents replay attacks and spoofing while maintaining consistent verification timing through structured parameter transitions
Data Source
AI summary
An access server communicates with a video conference device and a user device. The access server and the user device may access known mappings, including a default mapping. Each mapping is configured to map between tokens and symbols according to a distinct mapping relationship between the multi-bit tokens and the symbols. The access server instructs the video conference device to map an initial token to an initial symbol based on the default mapping and to transmit the initial symbol. The access server receives from the user device the initial token and a challenge mapping selected by the user device. The access server determines a challenge token that the challenge mapping maps to a challenge symbol, and instructs the video conference device to transmit the challenge symbol. The access server grants the user device access to an information carrying channel only if the challenge token is received from the user device.