期刊名称：International Journal of Computer Science & Technology
印刷版ISSN：2229-4333
电子版ISSN：0976-8491
出版年度：2011
卷号：2
期号：4Ver1
出版社：Ayushmaan Technologies
摘要：Wireless Sensor Networks are deprived of high memory requirements, high processing power, and are limited in usage of efficient security mechanisms. They are susceptible to possible node compromise, passive and active attacks. Most of the public key cryptographic techniques are found to be more work prone with the secure exchange of keys, lengthy hash operations with high processing rounds etc. Even though comprehensive surveys are made in disseminating sensor reports securely to the sink, those mechanisms do not provide adequate verification process of reports from source to destination nor do they completely mitigate false report injection attacks and Denial of Service attacks (DoS). Moreover these mechanisms concentrate on hop-by-hop security paradigms leaving end-to-end security at high risk. In this paper, we propose an en-route bogus filtering mechanism for secured data dissemination with the help of Nested HMAC structures. It filters bogus reports with the help of disseminated and disclosed key structures by the cluster head. The work also specifically addresses false report injection attacks and Denial of Services. The proposed work aims at decreasing the attackers malicious intent and activity compared to the existing mechanisms by the responsibility being taken by the cluster heads in finding the attackers within the clusters and marking them as malicious and later intimating to the base station. The legitimacy of the report being forwarded by the cluster head is collectively endorsed by Message authentication codes. We evaluate our mechanism through extensive analysis of relocating the position of malicious nodes in the event area and thereby analyzing its performance.(?
关键词：Wireless Sensor Networks; Security; Clustering; False injection;and DoS attacks.ce.n.l
