Data di Pubblicazione:
2023
Citazione:
Distributed query execution under access restrictions / S. De Capitani di Vimercati, S. Foresti, S. Jajodia, G. Livraga, S. Paraboschi, P. Samarati. - In: COMPUTERS & SECURITY. - ISSN 0167-4048. - 127:(2023 Apr), pp. 103056.1-103056.18. [10.1016/j.cose.2022.103056]
Abstract:
The availability of a multitude of data sources has naturally increased the need for subjects to collaborate
for supporting distributed computations that combine different data collections for their elaboration and
analysis. Due to the quick pace at which datasets grow, often the authorities collecting and owning such
datasets resort to external third parties (e.g., cloud providers) for their storage and management. Data un-
der the control of different authorities are autonomously encrypted (using different encryption schemes
and keys) for their external storage. This makes distributed computations combining these sources dif-
ficult to support. In this paper, we propose an approach enabling collaborative computations over data
encrypted in storage, selectively involving also subjects that might not be authorized for accessing the
data in plaintext when their collaboration is considered economically convenient. We also consider the
possible adoption of trusted hardware components, to enable the evaluation of operations over plain-
text data at non-fully trusted computational providers. The experimental results confirm the economic
benefits that can be enabled by our proposal.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Authorization model; Cloud computing; Controlled data sharing; Distributed query execution; Relation profile
Elenco autori:
S. De Capitani di Vimercati, S. Foresti, S. Jajodia, G. Livraga, S. Paraboschi, P. Samarati
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