Computer Science

Computer Science ›› 2026, Vol. 53 ›› Issue (3): 459-468.doi: 10.11896/jsjkx.241200102

• Information Security • Previous Articles    

Efficient Data Sharing Scheme with Integrity Auditing Functions in Cloud Storage

ZHANG Yuhang1, CHANG Jinyong1,2, YANG Luyao1, XU Maozhi3   

  1. 1 School of Information and Control Engineering, Xi’an University of Architecture and Technology, Xi’an 710055, China
    2 State Key Laboratory of ISN, Xidian University, Xi’an 710055, China
    3 School of Mathematic Sciences, Peking University, Beijing 100871, China
  • Received:2024-12-16 Revised:2025-03-10 Published:2026-03-12
  • About author:ZHANG Yuhang,born in 1999,postgraduate,is a member of CCF(No.Y0752G).His main research interests inlcude cryptography and communications.
    CHANG Jinyong,born in 1982,Ph.D,professor.His main research interests include cryptography and information security.
  • Supported by:
    National Natural Science Foundation of China(62476212,62072363),Open Project of State Key Laboratory of Integrated Services Networks(ISN25-02) and Project of Interdisciplinary Cultivation in Xi’an University of Architecture and Technology(X20220088).

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Abstract: With the popularity of cloud storage technology,the accompanying security is becoming more and more prominent:cloud servers may lose users’ stored data due to failures or external attacks,while the process of sharing data based on cloud sto-rage may also face the risk of unauthorized access by malicious users.Existing research mostly focuses on the implementation of a single security feature in cloud storage environments.In this paper,secure access control of data sharing process is accomplished on the basis of security audit of cloud storage data integrity.In the process of data integrity auditing,identity-based homomorphic authentication technology is used to generate tags for the stored data,and the user can be informed of the integrity of the stored data by verifying the aggregated tags returned by the cloud server,thus solving the problem of accidental loss of cloud storage data.In the data sharing phase,the hybrid form of attribute-based encryption and symmetric encryption can not only reduce the computation,communication and storage overhead of outsourced data,but also achieve the control of privilege management for unauthorized users,thus solving the problem of balancing high efficiency and privilege management during data sharing.The performance analysis shows that thedesigned system has low computation and communication overheads as well as storage redundancy in both data integrity auditing and sharing processes,which provides new research ideas for secure data storage and efficient sharing in cloud storage environment.

Key words: Cloud storage, Integrity auditing, Data sharing, Attribute-based encryption

CLC Number: 

  • TP391
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