2 research outputs found
fVSS: A New Secure and Cost-Efficient Scheme for Cloud Data Warehouses
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
Secret Sharing for Cloud Data Security
Cloud computing helps reduce costs, increase business agility and deploy
solutions with a high return on investment for many types of applications.
However, data security is of premium importance to many users and often
restrains their adoption of cloud technologies. Various approaches, i.e., data
encryption, anonymization, replication and verification, help enforce different
facets of data security. Secret sharing is a particularly interesting
cryptographic technique. Its most advanced variants indeed simultaneously
enforce data privacy, availability and integrity, while allowing computation on
encrypted data. The aim of this paper is thus to wholly survey secret sharing
schemes with respect to data security, data access and costs in the
pay-as-you-go paradigm