The increasing use of cloud computing, especially in commercial, government and\nhealthcare institutions, started with the use of computerized clouds. Clouds store important data,\nwhich reduces the cost of management and ensures easy access. To protect this data, cryptographic\nmethods are used to ensure confidentiality of the data, as well as to secure access to user data and\nincrease trust in cloud technology. In our paper, we suggest a new scheme to support an attributebased\nencryption system (ABE) that involves multiple parties such as data owners, data users, cloud\nservers and authority. A verified and authenticated decryption process for the cloud environment\nis the imperative feature of our proposed architecture. The data owner encrypts their data and sends\nit to the cloud. The cloud server performs partial decryption and the final decrypted data are shared\nfor users as per their privileges. Thus, the data owner reduces complexity of productivity by\ndelegating the decryption process to the cloud server. Analysis of the experimental results confirms\nthat data access in the electronic cloud atmosphere is safer due to a controlled multiple-users-rights\nscheme. Our performance evaluation results show that the proposed model condensed the\ncommunication overhead and made Digital Imaging and Communications in Medicine (DICOM)\nmore secure.
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