Healthcare Application Cloud - Ensuring Data Storage Security and Error Localization

Cloud computing is a recent trend in IT that moves computing and data away from desktop and portable PCs into large data centers. It refers to applications delivered as services over the Internet as well as to the actual cloud infrastructure � namely, the hardware and systems software in data centers that provide these services. Cloud computing faces many of the same challenges as other information and network technologies: performance, security, resiliency, interoperability, data migration, and transition from legacy systems. To ensure the correctness of users’ Healthcare data in the Healthcare cloud, it is propose a scheme which is flexible and effective with two features, opposing to its predecessors. By making use of homomorphic token with distributed verification of erasure-coded data, the scheme achieves the integration of storage correctness insurance and data error localization, which means the identification of misbehaving server.