Publication

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