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A Hybrid Approach for Querying Numeric data in DAS-Model

Publication Type : Journal Article

Publisher : International Journal of Control Theory and Applications

Campus : Coimbatore

School : School of Engineering

Center : TIFAC CORE in Cyber Security

Year : 2015

Abstract : pDatabase is the key component of any organization. Outsourcing these databases reduces the cost of managing and maintaining the database.nbsp;Datanbsp;innbsp;outsourced database are encrypted to provide privacy and confidentiality.nbsp;Innbsp;the proposednbsp;Hybridnbsp;modelnbsp;thenbsp;datanbsp;is initially bucketized using query optimal bucketization and then we apply an Order Preserving Encryption (OPE) on each bucket. Thehybridnbsp;modelnbsp;combines bucketization and OPE. Since, we apply an OPE the comparison operation can be directly applied without decrypting thenbsp;data. The OPE provides zero false positives with exact match. The proposednbsp;modelnbsp;preserves this zero false positives with increasenbsp;innbsp;efficiency ofnbsp;queryingnbsp;of the database. Even if the attacker has access to the encrypted database he cannot decrypt thedatanbsp;without key and domain information. © 2015 International Science Press./p

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