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Constructing an overlay storage system based on multiple personal cloud storages is a desirable technique and novel idea for cloud storages. Existing designs provide the basic functions with some customized features. Unfortunately, some important issues have always been ignored including privacy protection, QoS and cipher-text search. In this paper, we present Spy, our design for an anonymous storage...
We present UBackup-II, an anonymous storage overlay network based on personal multi-cloud storages, with flexible QoS awareness. We reform the original Tor protocol by extending the command set and adding a tail part to the Tor cell, which makes it possible for coordination among proxy servers and still keeps the anonymity. Thus, users can upload and download files secretly under the cover of several...
We present a multi-cloud based storage architecture that can effectively protect users' privacy and data security by implementing the concept of Oblivious RAM in a logical layer. It allows users to conceal the reading/writing operation types and access sequences to remote cloud storage in order to prevent the leakage of access patterns, which is a considerable threat to data security. We also use...
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