A wireless sensor network (WSN) usually consists of a large number of
small, low-cost devices that have limited energy supply, computation,
memory, and communication capacities. Recently, WSNs have drawn a lot of
attention due to their broad applications in both military and civilian
domains. Communi-cation security is essential to the success of WSN
applications, especially for those mission-critical applications working
in unattended and even hostile environments. However, providing
satisfactory security protection in WSNs has ever been a challenging
task due to various network & resource constraints and malicious
attacks. This motivates extensive research on communication security for
WSNs. This book studies communication security in WSNs regarding three
important aspects, namely, broadcast/multicast security, data report
security, and random key pre-distribution. The latest research results
on these topics are discussed in detail. The book will be of interest to
researchers in the area of network security and wireless networks. It is
also directed towards senior undergraduate and graduate students major
in computer networks and information security.