Blockchain OCSP Responder Using Smart Contracts for Certificate Revocation
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Solution Overview
Problem
Traditional Online Certificate Status Protocol (OCSP) responders are centralized servers that suffer from single points of failure, reliance on Certificate Authorities' infrastructure, and potential privacy concerns.
Innovation Solution
A blockchain-based OCSP responder using smart contracts and a custom URI scheme for decentralized certificate revocation management, where smart contracts are deployed on a blockchain network and interacted with via a custom URI embedded in digital certificates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized OCSP responders are used, then certificate status verification can be performed, but single points of failure and reliance on CA infrastructure occur
Solution Approach 1:
The patent segments the centralized OCSP responder into multiple distributed smart contracts deployed across different blockchain nodes. Each smart contract independently handles certificate status verification, eliminating the single point of failure in centralized infrastructure while maintaining verification functionality.
Solution Approach 2:
The patent introduces blockchain technology as an intermediary layer between certificate authorities and clients. Smart contracts on the blockchain serve as intermediaries that perform OCSP responses without requiring direct reliance on CA infrastructure, thereby reducing infrastructure complexity while improving reliability.
2Loss of information
If centralized OCSP responders are used, then certificate revocation information can be provided, but privacy concerns arise
Solution Approach 1:
The patent enables clients to independently query certificate status directly from blockchain smart contracts without going through centralized OCSP responders. This self-service approach allows clients to obtain revocation information autonomously, reducing the information loss associated with centralized intermediaries while also minimizing privacy risks by eliminating third-party involvement in the verification process.
3Reliability
If blockchain-based OCSP responder is implemented, then reliability and privacy are improved, but system complexity increases
Solution Approach 1:
The patent designs smart contracts that serve multiple functions: they store certificate revocation information, process OCSP requests, and provide verification services. This multi-functionality reduces the need for separate specialized components, thereby managing system complexity while improving reliability through the blockchain-based architecture.
Data Source
AI summary
Systems and methods for a blockchain-based OCSP responder using smart contracts and custom URI scheme for certificate revocation management. Various embodiments include, responsive to a requirement to determine status of a digital certificate, obtaining blockchain information from the digital certificate; interacting with a specified blockchain network based on the blockchain information; and determining a status of the digital certificate based on the Interacting.