Error-Triggered Certificate Revocation for Reliable Apparatus Messaging
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Solution Overview
Problem
Existing systems fail to effectively revoke certificates of apparatuses experiencing errors, leading to potential misuse of non-revoked certificates and unreliable message transmission, particularly in networked environments where apparatus reliability is crucial.
Innovation Solution
A system and method for apparatuses to generate and transmit error notification messages with certificate revocation information, allowing timely revocation of certificates by a server or peer apparatuses, ensuring reliable message transmission and reducing communication overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If device authentication based on certificates is used to determine legitimacy, then apparatus authenticity is verified, but message reliability is not guaranteed and certificates may be revoked at inappropriate timings
Solution Approach 1:
The system performs preliminary error detection and notification before certificate revocation is needed. Error detection units continuously monitor apparatus states and notify the certificate authority of errors before they compromise message reliability, allowing proactive certificate management rather than reactive revocation
Solution Approach 2:
The system implements feedback loops where error detection units monitor apparatus states and communicate with the certificate authority. The certificate authority receives error notifications, determines appropriate revocation timing based on error severity and type, and updates certificate revocation lists accordingly, creating a closed-loop system that continuously improves message reliability
2Reliability
If certificates are revoked immediately upon error notification, then message reliability is improved, but unnecessary certificates may be revoked reducing system availability
Solution Approach 1:
The system performs preliminary assessment of error severity and type before executing certificate revocation. The certificate authority evaluates whether the error warrants immediate revocation or can be monitored, allowing selective revocation that maintains system availability while ensuring message reliability for critical errors
Solution Approach 2:
The system changes the state of certificates based on error parameters rather than applying uniform revocation. The certificate authority adjusts certificate validity based on error severity, type, and apparatus criticality, creating a nuanced approach that balances reliability requirements with system availability
3Reliability
If error notification messages are transmitted constantly, then message reliability is ensured, but communication load increases
Solution Approach 1:
The system implements periodic error detection and notification rather than continuous transmission. Error detection units monitor apparatus states at regular intervals and only transmit notifications when errors are detected, reducing communication load while maintaining reliable error reporting for critical issues
Solution Approach 2:
The system extracts and transmits only essential error information rather than continuous data streams. Error notification messages contain only critical error details and apparatus identifiers needed for certificate management, filtering out redundant information to minimize communication energy consumption
Data Source
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Figure 3A~3B
AI summary
A system includes a first apparatus and a second apparatus, the first apparatus comprises a detection unit configured to detect an error, and a notification unit configured to notify occurrence of the error, and the second apparatus comprises a reception unit configured to receive the notification, and a revocation unit configured to revoke a certificate of the first apparatus based on the notification received by the reception unit.