Title: Enhancing the data security of digital records in archives through homomorphic encryption protocol

Authors: Hua Cui

Addresses: School of Literature and Journalism and Communication, Yan'an University, Yan'an, 716000, China

Abstract: In the digital era, archive records face risks of data leakage and unauthorised access. This study proposes a data security method based on homomorphic encryption, allowing computations without decryption. The approach trains models locally, sharing only updates instead of raw data. To enhance efficiency and privacy, it integrates a stepwise strategy, trust reward mechanism, and multi-key aggregation. Experimental results show that the method achieves a data access time of 0.5 s, encryption time of 1.2 s, privacy protection strength of 98.44 points, model accuracy of 99.5%, and communication time of 0.3 s. By preserving data privacy while optimising processing accuracy and efficiency, this approach significantly reduces data leakage risks in digital archives.

Keywords: archives; data security; homomorphic encryption; data sharing; trust reward mechanism; distribution strategy; multi-key aggregation.

DOI: 10.1504/IJICS.2025.150021

International Journal of Information and Computer Security, 2025 Vol.28 No.4, pp.493 - 508

Received: 04 Mar 2025
Accepted: 30 Jul 2025
Published online: 21 Nov 2025 *

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