Institute of Electrical & Electronic Engineers
With the increasing adoption of cloud computing for data storage, assuring data service reliability, in terms of data correctness and availability, has been outstanding. While redundancy can be added into the data for reliability, the problem becomes challenging in the \"Pay-as-you-use\" cloud paradigm where the authors always want to efficiently resolve it for both corruption detection and data repair. Prior distributed storage systems based on erasure codes or network coding techniques have either high decoding computational cost for data users, or too much burden of data repair and being online for data owners. In this paper, they design a secure cloud storage service which addresses the reliability issue with near-optimal overall performance.