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A Secure Frequency Hiding Index for Encrypted Databases

Authors:
Somayeh Sobati Moghadam

Keywords: Data outsourcing; data privacy; querying encrypted data

Abstract:
Cloud computing offers the opportunity of data outsourcing as well as the data management tasks. However, for the sake of various privacy issues, confidential data must be encrypted before outsourcing to the cloud. But query processing over encrypted data without decrypting the data is a very challenging task. Deterministic (DET) encryption scheme allows encrypting data while still enabling efficient querying over encrypted data. The inherit merits of DET make it very suitable and efficient scheme for cloud data outsourcing. But the security of DET scheme is still a challenge while DET is vulnerable to frequency attacks. We present a new scheme for indexing encrypted data, which hides data frequency to achieve a strictly stronger notion of security. The proposed indexing method is secure against frequency attacks, hence, data cannot be recovered from indexes. Moreover, our scheme is still efficient for query processing

Pages: 32 to 33

Copyright: Copyright (c) IARIA, 2016

Publication date: July 24, 2016

Published in: conference

ISSN: 2162-2116

ISBN: 978-1-61208-493-0

Location: Nice, France

Dates: from July 24, 2016 to July 28, 2016