Trusted Device Authentication via ASIC Challenge-Response
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Solution Overview
Problem
Existing cryptographic solutions for secure authentication of devices in networks face logistical security challenges due to reliance on cryptographic key distribution.
Innovation Solution
A method using a trusted device to retrieve and process authentication data with an ASIC, comparing the processed data to a response from a new device to determine authenticity within a threshold difference, and considering response time and version numbers for authentication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cryptographic key distribution is used for device authentication, then authentication security is improved, but logistical security problems worsen
Solution Approach 1:
The patent extracts the authentication verification process from centralized key distribution and places it at the edge devices through ASICs. Each device independently verifies authentication challenges locally without relying on centralized key management infrastructure, eliminating the logistical security complexity of key distribution while maintaining strong authentication security through hardware-based cryptographic operations.
2Reliability
If ASIC processing is used for authentication, then fraud resistance is improved, but computational cost worsens
Solution Approach 1:
The patent implements partial action by using ASICs to perform only the critical authentication verification operations rather than all processing tasks. The ASICs handle the computationally intensive cryptographic verification of authentication challenges, while other less demanding operations can be handled by standard processors, thus achieving high fraud resistance without excessive computational energy cost across the entire system.
3Measurement precision
If strict authentication threshold is applied, then authentication accuracy is improved, but network adaptability worsens
Solution Approach 1:
The patent implements dynamic threshold adjustment where the authentication challenge parameters and verification thresholds can be adapted based on network conditions, device capabilities, and security requirements. The system can dynamically modify the complexity of authentication challenges and the tolerance levels for verification, maintaining high authentication accuracy when needed while adapting to varying network conditions and device capabilities.
Data Source
AI summary
A method, computer program, apparatus, and system for authentication of devices in a network of devices, and more specifically to a challenge-response authentication in which one trusted device presents a question (“challenge”) and another party must provide a valid answer (“response”) to be authenticated. The challenge includes processing data by an application specific integrated circuit (ASIC).