TY - GEN
T1 - Oblivious outsourced storage with delegation
AU - Franz, Martin
AU - Williams, Peter
AU - Carbunar, Bogdan
AU - Katzenbeisser, Stefan
AU - Peter, Andreas
AU - Sion, Radu
AU - Sotakova, Miroslava
PY - 2012
Y1 - 2012
N2 - In the past few years, outsourcing private data to untrusted servers has become an important challenge. This raises severe questions concerning the security and privacy of the data on the external storage. In this paper we consider a scenario where multiple clients want to share data on a server, while hiding all access patterns. We propose here a first solution to this problem based on Oblivious RAM (ORAM) techniques. Data owners can delegate rights to external new clients enabling them to privately access portions of the outsourced data served by a curious server. Our solution is as efficient as the underlying ORAM constructs and allows for delegated read or write access while ensuring strong guarantees for the privacy of the outsourced data. The server does not learn anything about client access patterns while clients do not learn anything more than what their delegated rights permit.
AB - In the past few years, outsourcing private data to untrusted servers has become an important challenge. This raises severe questions concerning the security and privacy of the data on the external storage. In this paper we consider a scenario where multiple clients want to share data on a server, while hiding all access patterns. We propose here a first solution to this problem based on Oblivious RAM (ORAM) techniques. Data owners can delegate rights to external new clients enabling them to privately access portions of the outsourced data served by a curious server. Our solution is as efficient as the underlying ORAM constructs and allows for delegated read or write access while ensuring strong guarantees for the privacy of the outsourced data. The server does not learn anything about client access patterns while clients do not learn anything more than what their delegated rights permit.
UR - https://www.scopus.com/pages/publications/84857078897
U2 - 10.1007/978-3-642-27576-0_11
DO - 10.1007/978-3-642-27576-0_11
M3 - Conference contribution
AN - SCOPUS:84857078897
SN - 9783642275753
T3 - Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
SP - 127
EP - 140
BT - Financial Cryptography and Data Security - 15th International Conference, FC 2011, Revised Selected Papers
T2 - 15th International Conference on Financial Cryptography and Data Security, FC 2011
Y2 - 28 February 2011 through 4 March 2011
ER -