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- fVSS: A New Secure and Cost-Efficient Scheme for Cloud Data Warehouses doi link

Auteur(s): Attasena V., Harbi N., Darmont J.

Conference: 17th International Workshop on Data Warehousing and OLAP (DOLAP 2014) (Shangai, CN, 2014-11-07)
Actes de conférence: , vol. p.81-90 (2014)

Ref HAL: hal-01081882_v1
Ref Arxiv: 1412.3538
DOI: 10.1145/2666158.2666173
Ref. & Cit.: NASA ADS

Cloud business intelligence is an increasingly popular choice to deliver decision support capabilities via elastic, pay-per-use resources. However, data security issues are one of the top concerns when dealing with sensitive data. In this pa-per, we propose a novel approach for securing cloud data warehouses by flexible verifiable secret sharing, fVSS. Secret sharing encrypts and distributes data over several cloud ser-vice providers, thus enforcing data privacy and availability. fVSS addresses four shortcomings in existing secret sharing-based approaches. First, it allows refreshing the data ware-house when some service providers fail. Second, it allows on-line analysis processing. Third, it enforces data integrity with the help of both inner and outer signatures. Fourth, it helps users control the cost of cloud warehousing by balanc-ing the load among service providers with respect to their pricing policies. To illustrate fVSS' efficiency, we thoroughly compare it with existing secret sharing-based approaches with respect to security features, querying power and data storage and computing costs.