Server-Controlled Verifiable Credential Validity by Holder Credibility
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Solution Overview
Problem
The risk of fraudulent use of verifiable credentials (VCs) increases with advancements in encryption technology, necessitating a strengthened system to reduce this risk.
Innovation Solution
A server issues verifiable credentials with a validity period based on holder attribute information, reissues the credentials when the period expires, and uses the latest encryption technology for electronic signatures, with shorter periods for lower credibility holders to enhance security.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If verifiable credentials are issued with long validity periods, then administrative burden is reduced, but the risk of fraudulent use increases due to outdated encryption technology
Solution Approach 1:
The validity period of verifiable credentials is made dynamic rather than static. The server automatically adjusts the validity period based on the holder's credibility level, issuing shorter periods for lower credibility and longer periods for higher credibility. This dynamic approach allows the system to balance security requirements with administrative efficiency for different user groups.
Solution Approach 2:
The system implements periodic reissuance of verifiable credentials at predetermined intervals. This periodic action ensures that credentials are regularly updated with the latest encryption technology while maintaining administrative efficiency through automation. The server automatically reissues credentials without requiring manual intervention for each individual case.
2Reliability
If verifiable credentials are reissued frequently to use latest encryption technology, then security against fraud is improved, but administrative burden increases
Solution Approach 1:
Different validity periods and reissuance frequencies are applied to different holders based on their individual credibility levels. High-credibility holders receive longer validity periods with less frequent reissuance, while low-credibility holders receive shorter validity periods with more frequent reissuance. This localized quality approach ensures security is strengthened where needed while maintaining administrative efficiency overall.
Solution Approach 2:
The system implements automatic reissuance of verifiable credentials by the server without requiring manual administrative intervention for each reissuance. The server automatically manages the reissuance process based on predetermined validity periods and holder credibility levels, significantly reducing administrative burden while maintaining frequent updates with latest encryption technology.
3Reliability
If identity verification is performed for all holders, then security against fraud is improved, but processing time increases
Solution Approach 1:
The system performs identity verification selectively rather than for all holders equally. Verification frequency and depth are adjusted based on holder credibility levels - high-credibility holders undergo verification less frequently, while low-credibility holders undergo more frequent and thorough verification. This partial action approach maintains security while reducing overall processing time.
Data Source
AI summary
A server includes: a communication device configured to communicate with a communication terminal of a holder; and a processor. The processor is configured to issue a verifiable credential in response to an issuance request signal received from the communication terminal. The issuance request signal is a signal requesting issuance of the verifiable credential, and contains attribute information of the holder and a first decentralized identifier that is a decentralized identifier of the holder. The processor is configured to set a validity period for the verifiable credential based on the attribute information of the holder. The processor is configured to associate the set validity period with the first decentralized identifier.