文章基本信息

标题：A Technique for Handling Range and Fuzzy Match Queries on Encrypted Data
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作者：Shaukat Ali ; Azhar Rauf ; Huma Javed 等
期刊名称：The International Arab Journal of Information Technology
印刷版ISSN：1683-3198
出版年度：2013
卷号：10
期号：3
出版社：Zarqa Private University
摘要：Data is an important asset of today’s dynamically operating organizations and their businesses. Data is usually stored in databases. An important issue for IT professionals is to secure such data from unauthorized access and intruders. For protecting business centric data, many levels of security are used. Among these levels, data encryption is the final layer of security. Although encryption makes it difficult to breach this level of security, but it has a potential disadvantage of performance degradation, particularly for those queries which require operations on encrypted data. This work proposes to allow users to query over the encrypted column directly without decrypting it. This improves the performance of the SELECT query. In this technique the query retrieves only those records fulfilling the user’s search criteria and the data will be decrypted on the fly. The proposed algorithm handles range, fuzzy match, and exact match type queries. It has no “false positive hits”. From experimental findings the algorithm has shown greater efficiency than the state of art technique.
关键词：Database security; encryption; performance