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Showing 3 results for Rezaei
Mr Mohsen Rezaei, Dr Reza Ebrahimi Atani,
Volume 4, Issue 2 (3-2016)
Abstract
Authenticated Encryption is a block cipher mode of operation which simultaneously provides confidentiality, integrity, and authenticity assurances on the data transmition. In this regard in 2014 CAESAR competition started which aims at finding authenticated encryption schemes that offer advantages over AES-GCM and are suitable for widespread adoption. This paper provides an easy-to-grasp overview over functional aspects, security parameters, and robustness offerings of the CAESAR candidates, clustered by their underlying designs (block-cipher-, stream-cipher-, permutation-/sponge-, compression-function-based, dedicated) and compares encryption/decryption speed of all CAESAR candidates implemented on three processors of three different architectures AMD64, armeabi and mipso32.
Mr Saeid Rezaei, Mr Mohammad Ali Doostari, Mr Majid Bayat,
Volume 5, Issue 1 (9-2016)
Abstract
Cloud environment are known as a revolution in IT industry in the recent decade and many organizations have used this service for data processing and data storage. Despite of fast growing and numerous advantages, some organizations still do not use this service due to security problems and privacy issues related to storing sensitive data on the untrusted cloud servers. Access control management utilizing encryption techniques is one of the most common methods to solve these kinds of problems. Attribute based encryption is a new cryptographic model which uses descriptive attributes and access structures for managing access control. This article discusses the most recent methods of access control in cloud environment using attribute based encryption. We classify these protocols with respect of efficiently and security features. Finally, all the strengths and weaknesses points of reviewed articles are discussed and a comprehensive security and practical comparison is presented.
Mahsa Rezaei, Sadegh Dorri Nogoorani ,
Volume 11, Issue 1 (9-2022)
Abstract
The development and use of electronic health records (EHR) have had remarkable impacts on human life, such as improvements in the quality of medical care, better research results, and enhancements in treatment methods. Despite these improvements, availability, security and privacy concerns have remained to be very important in this field. In this article, we propose a decentralized and distributed system for electronic health records management with the help of the blockchain technology and its potential benefits. In this system, patient information is stored in the cloud. Also, the real owner of the electronic records is the patient, and with the help of smart contracts and encryption, he/she controls how to access his/her health information. In the proposed solution, the problem of sharing and storing the patients’ keys has been solved with the help of smart contracts. In addition, we proposed solutions to special cases which are raised by transferring the control of the records to the patients such as permissions for underage patients, in emergency situations, and after the death of the patient. Comparison of the related works shows that the proposed system has solved the problems of competing systems while maintaining a high level of privacy.
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