OCSP Responder Batch Grouping for Certificate Revocation
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Solution Overview
Problem
Conventional methods for propagating certificate revocation information in cryptographic systems, such as PKI, are inefficient as they often require multiple queries and rely on pre-signed OCSP responses that may not be optimized for user behavior or communication patterns, leading to increased bandwidth and processing requirements.
Innovation Solution
A method that groups certificate entries based on auxiliary data, such as user communication history and request frequency, to generate OCSP responses that include revocation status for multiple certificates, allowing for efficient distribution and verification, and utilizing pre-signed OCSP responses that can be cached and transmitted securely to reduce the number of inquiries.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional OCSP methods are used to propagate certificate revocation information, then certificate validation can be performed, but multiple queries are required and bandwidth usage increases
Solution Approach 1:
The patent combines multiple certificate revocation status responses into a single OCSP response batch. Instead of querying each certificate individually, the system groups multiple certificates and retrieves their revocation statuses in one consolidated response, reducing the number of network queries and bandwidth consumption while maintaining validation efficiency
Solution Approach 2:
The patent implements pre-signed OCSP responses that are generated and signed in advance before client queries are made. These pre-computed responses are cached and can be returned immediately without requiring real-time validation queries, significantly reducing bandwidth usage and improving response speed for frequently requested certificates
2Speed
If pre-signed OCSP responses are used, then response time is reduced, but cache hit ratios are not optimized for user behavior patterns
Solution Approach 1:
The patent incorporates feedback mechanisms that monitor and analyze user query patterns, communication histories, and certificate request frequencies. This feedback information is used to dynamically adjust caching strategies and pre-signing priorities, ensuring that the most frequently requested certificates have pre-signed responses ready, thereby optimizing cache hit ratios based on actual user behavior
Solution Approach 2:
The patent dynamically changes caching and pre-signing parameters based on observed usage patterns. Instead of using fixed cache expiration times or uniform pre-signing strategies, the system adjusts these parameters according to certificate popularity, user communication patterns, and request frequencies, improving the reliability of cache hits while maintaining fast response times
3Measurement precision
If individual certificate queries are made, then accurate revocation status is obtained, but the number of inquiries increases processing requirements
Solution Approach 1:
The patent merges multiple individual certificate validation operations into a single batched OCSP response processing operation. By grouping multiple certificate queries into one consolidated response, the system reduces the total number of processing cycles required while maintaining the accuracy of individual revocation status determinations through structured response parsing
Data Source
AI summary
A method and apparatus for propagating certificate revocation information. A certificate revocation list is received that includes a plurality of entries. The plurality of entries are grouped other than by order of appearance in the certificate revocation list. Certification statements are generated based on the grouped entries.