Key Technologies for Financial Data Security Protection Based on Blockchain

Authors

  • Su Meng Shenyang Institute of Engineering, Shenyang 110000, Liaoning, China

Abstract

Thecentralized database structure ofthe traditional financial system hassignificant risks in terms ofaudit and internal control, increasing its vulnerability to hacker attacks and making it difficult to trace and audit data. In addition, data privacy protection is inadequate and there is a high risk of information leakage. This study used the decentralized and tamper-proof characteristics of blockchain technology (BT) to improve the security and credibility of financial data in audit and internal control. The research used distributed storage to ensure data anti-attack capabilities, and smart contracts automatically perform data verification and management operations to reduce the impact of human intervention on the internal control process. Data encryption is combined with zero-knowledge proof methods to achieve privacy protection. Timestamp-based traceability and audit mechanisms are designed to ensure financial data compliance and verifiability. In terms of data consistency between nodes, the PBFT (practical Byzantian Fault Tolerance) consensus algorithm is used to optimize the efficiency of financial information synchronization, and the accurate access of authorized users in financial and audit activities is guaranteed through the role-based authority control system. Experimental results show that the blockchain based solution has a successful interception rate of more than 90%, and a data integrity verification pass rate of 100%, while the interception rate of the traditional DES (Data Encryption Standard) encryption solution does not exceed 70%. In regard to data privacy protection, the leakage rate of the zero-knowledge proof mechanism is only 0.35%, which is better than the 3% of RSA (Rivest-Shamir-Adleman) encryption. For financial data
tracing and auditing, the average tracing time of BT is 0.46 seconds, which is significantly better than the 2.22 seconds of traditional databases. The comprehensive evaluation results show that BT has excellent anti-attack ability, data privacy protection performance and financial data management efficiency in audit and internal control, and is expected to play an important role in a wider range of financial management applications.

Keywords: Financial Data Security Protection, Blockchain Technology, Data Privacy Protection, Smart Contracts, Attack Resistance Capability

Cite As

S. Meng, "Key Technologies for Financial Data Security Protection Based on Blockchain", Engineering Intelligent Systems, vol. 33
no. 4, pp. 457-467, 2025.





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Published

2025-07-01

Issue

Vol. 33 No. 4 (2025): International Journal of Engineering Intelligent Systems

Section

Article

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