In the evolution of social networks and big data, secure information sharing is a crucial task. When information is shared between the user and the organization admin, security plays a key role in any business organization in terms of privacy. Though many fruitful solutions prevail to protect the data integrity and privacy, there is a huge space for novel data protection schemes where a large set of data are involved. In this article, the Cloud-Based Access Control (C-BAC) framework is proposed which can fit in any business organization application. In this C-BAC, Policy Enforcement Point (PEP) is used to avoid unwanted information sharing with the neighboring employee. C-BAC framework with RSA provides security, based on the number of employees with the data handled by the particular employee, better than the existing access control framework with asymmetric encryption standard (AES) and Rivest–Shamir–Adleman (RSA) in terms of individual information handling.
1 Ensuring data security in cloud is an important research issue.Dataaccess Control isan efficient way for guaranteeing the data security. Data access cannot be controlled safely and efficiently, unless access decision takes semantic relationship among different entities in the access control domain. Accessdecisions made with considering entities in isolation,rather than taking their interrelationships into account may result in security violations. Traditional access control models like MAC, DAC, RBAC fails to consider interrelationships among access control entities. In this paper, we propose a Semantic Based AccessControl model, which considers relationships among the entities in all domains of access control namely Subject(user), Object(Data/resource), Action(select, open, read, write) and so on. We also had shown how to reduce the semantic interrelationships into subsumption problem. This reduction facilitates the propagation of policies in these domains and also enhances time and space complexity of access control mechanisms.
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