To enhance the security of mobile cloud users, a few proposals have been presented recently. However we argue that most of them are not suitable for mobile cloud where mobile users might join or leave the mobile networks arbitrarily. In this paper, we design a secure mobile user-based data service mechanism (SDSM) to provide confidentiality and fine-grained access control for data stored in the cloud. This mechanism enables the mobile users to enjoy a secure outsourced data services at a minimized security management overhead. The core idea of SDSM is that SDSM outsources not only the data but also the security management to the mobile cloud in a trust way. Our analysis shows that the proposed mechanism has many advantages over the existing traditional methods such as lower overhead and convenient update, which could better cater the requirements in mobile cloud computing scenarios.
The Secure Data Service is a secure environment funded by the ESRC to provide researcher access to disclosive
micro data either from their offices, safe rooms in their institutions or on site at the UK Data Archive. Operation is legally framed by the 2007 statistics Act which makes pos -sible access to the confidential data for statistical purposes. This short paper introduces this new UK Data Archive service and proposed specifications, as well as challenges facing data service providers. We envision that the pro -posed SDS infrastructure will meet the requirements of the
data security model. The paper also aims to be an exem-plar for a secure remote access practice.
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