Towards a secure incremental proxy re-encryption for e-healthcare data sharing in mobile cloud computing

摘要

Cloud computing provides universal access to a pool of shared resources to numerous stakeholders/shareholders of the e-healthcare industry. The speedy adoption of cloud computing has inevitably raised security concerns for the outsourced data. Since mobile devices are resource constrained, the security solutions must discharge the computing comprehensive operations on the cloud for implementation. Conventionally, any modification to uploaded record would compel the mobile client to encrypt and compute the hash value from scratch. Through this paper, we intend to propose a pairing-free incremental proxy re-encryption scheme, without certificates, which would run proportionate to the number of modifications in time, instead of the document length for improvement in the file modification tasks. The proposed scheme shows a significant improvement in the file modification system regarding the energy consumption and the turnaround timer taken. The proposed scheme has been verified through a formal method using Z(3) solver.