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Fareed & Yassin                                                                                                                   | 63

3- Similar systems are compared in the comparison table to      with the healthcare industry. In the quest for the healthcare
    prove the proposed system's efficiency.                     field, the people were far more willing to access and
                                                                exchange their data safely through cloud technology without
The rest of the paper is structured as follows: Section two     putting their privacy at risk. This work also found a quick
discusses the latest related work. Section three presents the   and easy way to keep the patients' private information saved
primitive tools, while the section four refers to the proposed  in the intellectual health care system. Their work builds the
scheme. Section five focuses on security analysis. Finally,     system in a way that does not compromise privacy; a trusted
section six concludes this paper. Fig.1. shows the proposed     third party does the computing of patient data. Omar et al.
decentralization model.                                         [3] increased the emerging interest in healthy data in the
                                                                cloud due to malicious attackers. The healthcare centers have
                      II. RELATED WORKS                         suffered severe consequences from the attacks on health
                                                                data; the effect of attacks has decreased with the
Decentralized technology can robustly and effectively solve     decentralization of the cloud's data. Confidential health data
complicated issues like securing healthcare data,               is computed, managed, and processed by decentralized data
transactions, and storage. In addition, this technique enables  of the peer-to-peer (P2P) system. Blockchain technology
an encrypted method for healthcare data [1]. This paper         depends on main features such as decentralized, shared
comprises a state-of-the-art and the most recent study of       properties, secured exchanged data. Although the malicious
applying related work decentralized mechanism for               attack impacts have been controlled by proposing diverse
preserving privacy in the healthcare models. In 2019,           solutions based on a decentralized approach, these solutions
Mubarakali et al. [2] used blockchain technology to make        have failed to ensure the complete privacy of patient-centric
practical and secure transactions for health records. The       systems. Consequently, there paper refers to create
authors used to ensure that everyone who had access to the      healthcare framework to manage data of patient using the
data did so privately. Their study focuses on Blockchain        blockchain technology. This method used cryptographic
technologies that have been used over time to stay in touch     tools for encrypting medical data.

Fig.1. Proposed decentralization model
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