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Figure 4. The computational cost of each entity in the proposed scheme

8 CONCLUSION
In this paper, we proposed a stereo storage structure assisted one-way anonymous auditing protocol aiming
the e-health system for the particularity of medical data. In our scheme, medical data can be reviewed,
used and verified for integrity by relevant medical personnel and relevant patients. Besides, both the file
origin and the file integrity of medical data in EHS can be verified. In addition, the proposed stereo storage
structure can effectively assist the storage and quick search of various types of medical data. Both the
security analyses and experimental results demonstrate that the proposed scheme in this paper is efficient
and secure in the cloud.

DECLARATIONS
Authors’ contributions
Made substantial contributions to conception and design of the study and write the manuscript: Jiang LH
Provided administrative, technical, and material support: Wang C, Shen J

Availability of data and materials
The related data used to support the findings of this study are included within the article.

Financial support and sponsorship
This work is supported by the National Natural Science Foundation of China (No. U1836115, No. 61672295,
No. 61922045, No. 61672290), the Natural Science Foundation of Jiangsu Province (No. BK20181408),
Henan Key Laboratory of Network Cryptography Technology (No. LNCT2019-A01), the Peng Cheng
Laboratory Project of Guangdong Province (No. PCL2018KP004), the 2020 Research Innovation Program
for Postgraduates of Jiangsu Province (No. KYCX20-0936), the CICAEET fund, and the PAPD fund.

Conflicts of interest
All authors declared that there are no conflicts of interest.