Past researches on sensor network routing have been focused on e?±ciency
and e?®ectiveness of data dissemination, and many routing protocols have been
proposed for sensor networks, such as Directed Di?®usion [21], TTDD [20],
LEACH [24], Mesh [19], etc. Since most existing routing protocols have not
been designed with security as a goal, these routing protocols are vulnerable
to many attacks. However, it is non-trivial to fix the above problem since it
is unlikely that a routing protocol in a sensor network can be made secure
by incorporating security mechanisms after the design has completed. Studies
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Chapter 17 A Survey on Sensor Network Security
and experiences have shown that considering security during design time is
the best way to provide security for sensor network routing.
In this chapter, we present the current state-of-art of research on sensor
network security. The rest of the chapter is organized as follows. We discuss
various attacks on sensor networks in Section 2. We present typical assumptions
and security objectives of sensor networks in Section 3. In Section 4, we
present a survey of key management schemes designed for sensor networks.
Secure routing issue is discussed in Section 5. Finally, we conclude this article
in Section 6.
2 Attacks on Sensor Networks
A large-scale sensor network consists of thousands of sensor nodes and may be
dispersed over a large area. Typical sensor nodes are small with limited communication
and computing capabilities, and are powered by batteries.
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