ABSTRACT
Wireless sensor networks have been a promising approach to many diverse applications and are playing a major role in the upcoming age of intelligent networking. However, with the increase in popularity of such networks, there is an ever-increasing demand for better security. In many military applications, for instance, sensor networks are involved in mission-critical tasks, and security therefore is a top priority in such situations. In addition, resource, computing, and environmental constraints on WSN (discussed in Chapter 1) pose new challenges in securing such networks. Security in WSN is especially challenging due to the inherent broadcast nature of wireless communication. Any radio equipment can participate, either passively or actively, in any form of radio communication, by tuning the equipment to the same frequency band as that of the communicating nodes.
