Secure Cloud Storage Protocols with Data Dynamics Using Secure Network Coding [article]

Binanda Sengupta and Akanksha Dixit and Sushmita Ruj
<span title="2018-08-29">2018</span> <i > arXiv </i> &nbsp; <span class="release-stage" >pre-print</span>
In the age of cloud computing, cloud users with a limited amount of storage can outsource their data to remote servers. The cloud servers, in lieu of monetary benefits, offer retrievability of their clients' data at any point of time. A client's data can be dynamic (or static) in nature depending on whether the client can (or cannot) update the uploaded data as needed. Secure cloud storage protocols enable a client to check the integrity of her outsourced data by auditing the data. In this
more &raquo; ... we explore the possibility of constructing a secure cloud storage for dynamic data by leveraging the idea of secure network coding. We show that some of the secure network coding schemes can be used to construct efficient secure cloud storage protocols for dynamic data, and we construct such a secure cloud storage protocol (DSCS I) based on a secure network coding protocol. To the best of our knowledge, DSCS I is the first secure cloud storage protocol for dynamic data that is based on a secure network coding protocol and that is secure in the standard model. Although generic dynamic data support arbitrary insertions, deletions and modifications, append-only data find numerous applications in the real world and have been already deployed for various log structures. Thus, we provide another construction of a secure cloud storage protocol (DSCS II) specific to append-only data --- that overcomes some limitations of DSCS I. We compare the asymptotic performance of DSCS I and DSCS II with that of other secure cloud storage schemes. Finally, we provide prototype implementations for DSCS I and DSCS II in order to evaluate their performance.
<span class="external-identifiers"> <a target="_blank" rel="external noopener" href="">arXiv:1612.08029v6</a> <a target="_blank" rel="external noopener" href="">fatcat:xzkrmw2havfddjgqwo63bino7u</a> </span>
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