Blockchain Variant Index Information for Secure Content Matching
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Solution Overview
Problem
Current blockchain-based transaction systems face security hazards due to the centralized maintenance of plaintext sensitive thesauri, which can lead to potential leaks during synchronization, compromising transaction information security.
Innovation Solution
A blockchain-based information processing method that records index information in a variant form, rather than plaintext, using a network node device to obtain and match original index information, generating variant index information that does not directly display specific content, thereby enhancing security by reducing the likelihood of security hazards.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If plaintext sensitive thesaurus is maintained in a centralized organization for content detection and filtering, then content security detection capability is improved, but security hazards occur during synchronization due to potential cover file leaks
Solution Approach 1:
The patent creates a copy of the sensitive thesaurus in a distributed manner across multiple nodes in the blockchain network. Instead of maintaining a single centralized plaintext thesaurus that is vulnerable to leaks during synchronization, the system distributes copies of the thesaurus data to multiple participants, eliminating the single point of failure and reducing security risks associated with centralized storage and synchronization.
Solution Approach 2:
The patent segments the centralized thesaurus maintenance function into distributed components across multiple blockchain nodes. Each node maintains and contributes to the sensitive thesaurus, transforming a monolithic centralized system into a distributed system where no single node holds complete control, thereby improving both security and reliability.
2Productivity
If centralized plaintext thesaurus synchronization is used for updating sensitive words, then update efficiency is improved, but potential security hazards occur that compromise transaction information
Solution Approach 1:
The patent enables each blockchain node to autonomously maintain and update its local copy of the sensitive thesaurus based on consensus mechanisms and distributed protocols. Instead of relying on centralized updates that create security vulnerabilities during synchronization, each node independently manages its copy, reducing the attack surface and eliminating the need for insecure centralized synchronization processes.
3Ease of operation
If index information is maintained in plaintext form, then ease of access and processing is improved, but security risks increase due to direct display of specific content
Solution Approach 1:
The patent introduces an intermediary layer (the distributed blockchain network and consensus mechanisms) between the sensitive thesaurus data and external access points. This intermediary structure allows the system to maintain plaintext index information for efficient processing while protecting it from direct exposure through distributed storage, access controls, and consensus-based validation, thereby reducing security risks without sacrificing accessibility.
Data Source
AI summary
Embodiments of this application provide a blockchain-based information processing method, including: obtaining an original index information set, the original index information set comprising at least one piece of original index information, each piece of original index information comprising plaintext sensitive content; obtaining information in to-be-matched blocks in a blockchain system, the information comprising information content and an information index, the information content having a correspondence with the information index; matching the information content in the information by using the original index information set, to obtain a matching result; and determining a variant index information set when the matching result indicates that the matching succeeds, the variant index information set comprising at least one piece of variant index information, the variant index information comprising the information index corresponding to the information content in the information.