Blockchain-based Multi-level Data Security Storage and Sharing System for Credit Scenarios
In the current enterprise credit management system,data held by various entities is both diverse and heterogeneous,leading to sig-nificant challenges in data sharing.Compounding this scenario are issues such as data silos,single points of failure,and privacy breaches.Blockchain technology,renowned for its inherent decentralization and tamper-proof characteristics,effectively addresses these challenges.Accordingly,this paper introduces a multi-tiered credit data storage and sharing system based on blockchain technology.Initially,the system employs a combination of on-chain and off-chain storage to achieve multi-tiered,hybrid data storage,thus overcoming the storage bottle-necks associated with blockchain.Subsequently,a priority-based,multi-level priority queue sorting algorithm is proposed.This innovative al-gorithm ensures equitable resource allocation and performance-prioritized scheduling for multi-level data,thereby enhancing the overall qual-ity of blockchain services.Furthermore,a fine-grained access control strategy is developed.Integrating both channel and file encryption,this strategy effectively mitigates potential file leakage issues in the InterPlanetary File System(IPFS)and substantially improves the security and reliability of blockchain file storage.Experimental results indicate that the system not only effectively resolves the redundancy and security is-sues inherent in traditional sharing models but also achieves efficient,secure data storage and reliable sharing,all while fulfilling the perfor-mance demands of practical applications.
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