Abstract:

Data aggregation in wireless sensor networks (WSNs) is an important paradigm which aims to eliminate the problem of redundant data transmission, by combining similar data. Consequently the resources consumption will be reduced. Securing this paradigm is a critical challenge due to constraints it imposes such as the limited resources. Several protocols have been proposed to secure data aggregation process in WSNs. Most of these proposed protocols suggest solutions to secure the communication links between the aggregation nodes and the base station and do not consider security in the low level where compromising the sensor nodes leads to corrupted sensed data, which may alter discreetly the aggregation result. In this paper, we propose a new security mechanism to secure data aggregation in WSNs. Our mechanism aims to secure the sensor nodes level using a lightweight fragile watermarking technique to insure authentication and integrity of sensed data and to secure the links between the nodes and the base station.

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