Security Techniques for Information Retrieval in Ad Hoc Networks

2015 Fiscal Year Final Research Report

• Project/Area Number: 26540035
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Information network
• Research Institution: Osaka University
• Principal Investigator: Hara Takahiro 大阪大学, 情報科学研究科, 教授 (20294043)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: モバイルネットワーク / アドホックネットワーク / 情報検索 / セキュリティ

Outline of Final Research Achievements

Top-k search is a typical information retrieval technique, which retrieves data items with k highest scores calculated by s query specified condition. In mobile ad hoc networks (MANETs), top-k search is basically processed as follows: a query issuer floods the entire network with a query with the query condition, and then every mobile node receiving this query sends back data items with k highest scores among its own and received data items. During this process, if multiple malicious nodes exist and these nodes replace received data items which are included in the final search result as its own data items with low scores, the accuracy of the top-k search decreases. To tackle this problem, in this project, we have proposed some approaches for improving the search accuracy against this kind of attacks and also detecting the malicious nodes.

Free Research Field

データ工学