An Efficient Verifiable Multi-Authority Secret Access control scheme in Cloud Storage

Abstract

Data  access  control  is  an  efficient  way  to  provide  the  data  security  in  the  cloud  but  due  to  data outsourcing over untrusted cloud servers, the data access control becomes a challenging issue in cloud storage systems. Despite many advantages of cloud storage, there still remain various challenging obstacles, among which, privacy and security of users’ data have become major issues, especially in public cloud storage Attribute-based  Encryption  (ABE)  technique  is  regarded  as  a  most  trustworthy  cryptographic conducting tool to guarantee data owner’s direct control on their data in public cloud storage. The previous ABE schemes involve only one authority to maintain the complete attribute set, which can bring a single-point hindrance on both security and performance. Paper proposed the design, an expressive, efficient and revocable decentralized manner data access control  scheme for  multi-authority cloud  storage  systems,  where  there  are multiple authorities exist and every authority is able to issue attributes independently.