• P.V. Hari Prasad
• Mandava Sampath
• T.Pavitra Sanjana
• M.Yeswitha Chowdary
• A. Yaswanth Kumar

With the rapid development of the computer technology, cloud-based services have become a hot topic. Cloud-based services not only provide users with convenience, but also bring many security issues. Therefore, the study of access control scheme to protect users' privacy in cloud environment is of great significance. In this project, we present an access control system with privilege separation based on privacy protection (PS-ACS). In the PS-ACS scheme, we divide the users into personal domain (PSD) and public domain (PUD) logically. In the PSD, we set read and write access permissions for users respectively. The Key-Aggregate Encryption (KAE) is exploited to implement the read access permission which improves the access efficiency. A high degree of patient privacy is guaranteed simultaneously by exploiting an Improved Attribute-based Signature (IABS) which can determine the users’ write access. For the users of PUD, a hierarchical attribute-based encryption (HABE) is applied to avoid the issues of single point of failure and complicated key distribution. Function and performance testing result shows that the PS-ACS scheme can achieve privacy protection in cloud-based services.

Access control system,key-aggregate encryption,hierarchical attribute-based signature

"PRIVACY PROTECTION BASED ACCESS CONTROL SCHEME IN CLOUD-BASED SERVICES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 3, page no.586-591, March-2019, Available :http://www.jetir.org/papers/JETIR1903B90.pdf

"PRIVACY PROTECTION BASED ACCESS CONTROL SCHEME IN CLOUD-BASED SERVICES", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 3, page no. pp586-591, March-2019, Available at : http://www.jetir.org/papers/JETIR1903B90.pdf