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TABLE V. thentication in electronic health records,” Cogent Engi-
NOTATION USED IN THE PROPOSED SCHEME. neering, vol. 9, no. 1, 2022.

Symbol Description [7] H. A. Younis, I. M. Hayder, I. S. Seger, and H. A. Younis,
User “Design and implementation of a system that preserves
Ui the confidentiality of stream cipher in non-linear flow
CHS Cloud Healthcare Server coding,” Journal of Discrete Mathematical Sciences and
Key Generator Center Cryptography, vol. 23, no. 7, pp. 1409–1419, 2020.
KGC XOR operation
? [8] Y. Chen, J. Sun, Y. Yang, T. Li, X. Niu, and H. Zhou,
Man-In the middle attack “Psspr: a source location privacy protection scheme
MITM Electronic healthcare record based on sector phantom routing in wsns,” International
Public key of cloud health server Journal of Intelligent Systems, vol. 37, no. 2, pp. 1204–
E H Ri Private key of cloud health server 1221, 2022.
PUCHSk
PrCHSk Identity of patient Wi. [9] N. C. Basjaruddin, S. Ramadhan, F. Adinugraha, and
Password of patient Wi K. Kuspriyanto, “Baggage tracing at airports using near
IDWi The current medical establishment field communication,” in in 2019 International Confer-
PWWi ence on Advanced Mechatronics, Intelligent Manufac-
CH Sk Shared key of user ture and Industrial Automation (ICAMIMIA), pp. 109–
SKUi QRcode of user 113, 2019.
QRU i
EH(Wi) Homomorphic encryption of Wi [10] D. C. Nguyen, P. N. Pathirana, M. Ding, and A. Senevi-
h(.) One-way hash function ratne, “Bedgehealth: A decentralized architecture for
edge-based iomt networks using blockchain,” IEEE In-
ri The one-time random number generated by user ternet of Things Journal, vol. 8, no. 14, pp. 11743–
11757, 2021.
CONFLICT OF INTEREST
[11] I. Indu, P. R. Anand, and V. Bhaskar, “Identity and access
The authors have no conflict of relevant interest to this article. management in cloud environment: Mechanisms and
challenges,” Engineering science and technology, an
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