A Cross tenant Secure Data Sharing Scheme Using Cloud Resource Mediation Service

Abstract

Most cloud services are built with multi-tenancy which enables data and configuration segregation upon shared infrastructure. Each tenant essentially operates in an individual silo without interacting with other tenants. However, outsourcing data to a third-party administrative control entails serious security concerns. Data leakage may occur due to attacks by other users and machines in the cloud. Consequently, high-level of security measures is required. Resource sharing on the cloud can be achieved on a large scale as this is location independent and cost effective. In this paper, we propose a cloud resource mediation service (CRMS) which is offered by the cloud service providers (CSP), which acts as the role of trusted third party among their various tenant members. This specific model determines the asset sharing information between two different tenants within the sight of our proposed cloud resource mediation service. The correctness of activation and delegation mechanism is done by four distinct algorithm (Activation, Delegation, Forward Revocation and Backward Revocation) is also illustrated using formal verification.