Write-only oblivious RAM-based privacy-preserved access of outsourced data
نویسندگان
چکیده
منابع مشابه
Privacy-Preserving Access of Outsourced Data via Oblivious RAM Simulation
Suppose a client, Alice, has outsourced her data to an external storage provider, Bob, because he has capacity for her massive data set, of size n, whereas her private storage is much smaller—say, of size O(n), for some constant r > 1. Alice trusts Bob to maintain her data, but she would like to keep its contents private. She can encrypt her data, of course, but she also wishes to keep her acce...
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We study the problem of providing privacypreserving access to an outsourced honest-butcurious data repository for a group of trusted users. We show that such privacy-preserving data access is possible using a combination of probabilistic encryption, which directly hides data values, and stateless oblivious RAM simulation, which hides the pattern of data accesses. We give simulations that have o...
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Oblivious RAM technology has advanced rapidly. Under certain clientside storage assumptions, tree-based ORAM designs [19] have achieved established lower bounds even for online adversaries that can monitor everything a client does. Write-only ORAMs target a weaker but often more practical multisnapshot adversary that can monitor only user writes. This adversary is typical in plausible deniabili...
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Outsourcing data to remote storage servers has become more and more popular, but the related security and privacy concerns have also been raised. To protect the pattern in which a user accesses the outsourced data, various oblivious RAM (ORAM) systems have been proposed. However, existing ORAM designs assume a single user or a group of mutuallytrusted users to access a remote storage, which mak...
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Oblivious RAM (ORAM) is a cryptographic primitive which obfuscates the access paerns to a storage thereby preventing privacy leakage. So far in the current literature, only ‘fully functional’ ORAMs are widely studied which can protect, at a cost of considerable performance penalty, against the strong adversaries who can monitor all read and write operations. However, recent research has shown ...
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ژورنال
عنوان ژورنال: International Journal of Information Security
سال: 2016
ISSN: 1615-5262,1615-5270
DOI: 10.1007/s10207-016-0329-x