• Vidyavathi D P
• Sowmya C J
• Shruthi K B

Cloud computing is a new computing paradigm that is built on virtualization, parallel and distributed computing, utility computing, and service- oriented architecture. In the last several years, cloud computing has emerged as one of the most influential paradigms in the IT industry.Number of papers has proposed access control of outsourced data in cloud computing, but it seems to be more inflexible to implement complex access control policies.This paper propose a hierarchical attribute-set-based encryption scheme for access control in cloud computing. It extends the cipher text-policy attribute-set-based encryption (CP-ASBE, or ASBE for short) scheme by with a hierarchical structure of system users, so as to achieve scalable, flexible and fine-grained access control. The contribution of the paper is multifold. First, to show how to extend the ASBE algorithm with a hierarchical structure to improve scalability and flexibility while at the same time inherits the feature of fine-grained access control of ASBE. Second, to demonstrate how to implement a full-fledged access control scheme for cloud computing . The scheme provides full support for hierarchical user grant, file creation, file deletion, and user revocation in cloud computing. Third, to formally prove the security of the proposed scheme based on the security of the CP-ABE scheme and analyze its performance in terms of computational overhead.

Access Control in Cloud Computing with Key-Policy Attribute Based Encryption

"Access Control in Cloud Computing with Key-Policy Attribute Based Encryption", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 8, page no.f646-f650, August-2021, Available :http://www.jetir.org/papers/JETIR2108685.pdf

"Access Control in Cloud Computing with Key-Policy Attribute Based Encryption", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 8, page no. ppf646-f650, August-2021, Available at : http://www.jetir.org/papers/JETIR2108685.pdf