Data di Pubblicazione:
2018
Citazione:
Three-server swapping for access confidentiality / S. De Capitani di Vimercati, S. Foresti, S. Paraboschi, G. Pelosi, P. Samarati. - In: IEEE TRANSACTIONS ON CLOUD COMPUTING. - ISSN 2168-7161. - 6:2(2018 Apr), pp. 492-505. [10.1109/TCC.2015.2449993]
Abstract:
We propose an approach to protect confidentiality of data and accesses to them when data are stored and managed by external providers, and hence not under direct control of their owner. Our approach is based on the use of distributed data allocation among three independent servers and on a dynamic re-allocation of data at every access. Dynamic re-allocation is enforced by swapping data involved in an access across the servers in such a way that accessing a given node implies re-allocating it to a different server, then destroying the ability of servers to build knowledge by observing accesses. The use of three servers provides uncertainty, to the eyes of the servers, of the result of the swapping operation, even in presence of collusion among them.
Tipologia IRIS:
01 - Articolo su periodico
Keywords:
Shuffle index; content confidentiality; access confidentiality; pattern confidentiality; distributed swapping
Elenco autori:
S. De Capitani di Vimercati, S. Foresti, S. Paraboschi, G. Pelosi, P. Samarati
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