Securing Coding-Based Cloud Storage Against Pollution Attacks
| Autor: | Cosimo Anglano, Marco Grangetto, Rossano Gaeta |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Cloud storage
Computer science Distributed computing Cloud computing security 02 engineering and technology Computer security computer.software_genre Outsourcing 0202 electrical engineering electronic engineering information engineering Redundancy (engineering) coding pollution attack 020203 distributed computing business.industry 020206 networking & telecommunications Disk sector integrity performance Service provider Computational Theory and Mathematics Hardware and Architecture Data redundancy Signal Processing business computer |
| Zdroj: | IEEE Transactions on Parallel and Distributed Systems. 28:1457-1469 |
| ISSN: | 1045-9219 |
| Popis: | The widespread diffusion of distributed and cloud storage solutions has changed dramatically the way users, system designers, and service providers manage their data. Outsourcing data on remote storage provides indeed many advantages in terms of both capital and operational costs. The security of data outsourced to the cloud, however, still represents one of the major concerns for all stakeholders. Pollution attacks , whereby a set of malicious entities attempt to corrupt stored data, are one of the many risks that affect cloud data security. In this paper we deal with pollution attacks in coding-based block-level cloud storage systems, i.e., systems that use linear codes to fragment, encode, and disperse virtual disk sectors across a set of storage nodes to achieve desired levels of redundancy, and to improve reliability and availability without sacrificing performance. Unfortunately, the effects of a pollution attack on linear coding can be disastrous, since a single polluted fragment can propagate pervasively in the decoding phase, thus hampering the whole sector. In this work we show that, using rateless codes, we can design an early pollution detection algorithm able to spot the presence of an attack while fetching the data from cloud storage during the normal disk reading operations. The alarm triggers a procedure that locates the polluting nodes using the proposed detection mechanism along with statistical inference. The performance of the proposed solution is analyzed under several aspects using both analytical modelling and accurate simulation using real disk traces. Our results show that the proposed approach is very robust and is able to effectively isolate the polluters, even in harsh conditions, provided that enough data redundancy is used. |
| Databáze: | OpenAIRE |
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