Cloud storage is an important service of cloud computing, it can offer services for data owners in a pay-as-you-go fashion. In cloud storage, after data files are outsourced, data owner no longer has physical controls...
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In most data sharing protocols for cloud storage, to update the outsourced data, the data updating operation is only executed by data owner. Obviously, it is far from practical owing to the tremendous computational co...
详细信息
Cloud computing is a kind of internet-based computing, it outstanding property is on-demand computing. As an important service, cloud storage is able to provide users and enterprises with various capabilities to store...
详细信息
ISBN:
(纸本)9781509018949
Cloud computing is a kind of internet-based computing, it outstanding property is on-demand computing. As an important service, cloud storage is able to provide users and enterprises with various capabilities to store and access their data in the centers. It relies on sharing of resources to achieve coherence and economies of scale. However, in most of data sharing protocols, to update the outsourced data, the data updating operation is only executed by data owner. Obviously, it is far from practical due to the tremendous computational cost on data owner. To support multi-user modification, we propose a novel public auditing for data sharing with multi-user modification by using ring signature in this paper. Our scheme does not only support public checking and efficient user revocation, but provide backward security. Efficiency analysis shows that our scheme is very efficient.
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