A Wireless Sensor Network (WSN) is a versatile and distributed sensing system that is able to support a wide variety of application domains. One of the most important issue in WSN design is to guarantee the reliability of the collected data which involves in turn security issues across wireless links. This paper deals with the cryptographic aspects in the broader field of security in WSNs. In p...

Energy is the most limiting resource in sensor networks. This is particularly true for dynamic sensor networks in which the sensor-net application changes its hardware utilization over time. In such networks, offline estimation of energy consumption can not take into account all changes to the application’s hardware utilization profile and thus invariably returns inaccurate estimates. Online ac...

This paper describes the design and implementation of message transformation services for wireless sensor networks. We examine a scheme to integrate heterogeneous sensors at the message level as part of our middleware research. Our framework is implemented on a base station to send and receive message packets from a variety of sensor network platforms and protocols. An advantage of our approach...

Designing Wireless Sensor Networks (WSNs) has proven to be a slow, tedious and error-prone process due to the inherent intricacies of designing a distributed, wireless, and embedded system. Previous projects have shown that it is vital to follow a systematic design approach accompanied by an end-toend test methodology to satisfy all design requirements including robustness and reliability in a ...

In recent years, it has been proposed security architecture for sensor network.[2][4]. One of these, TinySec by Chris Kalof, Naveen Sastry, David Wagner had proposed Link layer security architecture, considering some problems of sensor network. (i.e : energy, bandwidth, computation capability,etc). The TinySec employs CBC_mode of encryption and CBC-MAC for authentication based on SkipJack Block...

s all hardware resources as components. For example, calling the getData() command on a sensor component will cause it to later signal a dataReady() event when the hardware interrupt fires. While many components are entirely software based, the combination of split-phase operations and tasks makes this distinction transparent to the programmer. In both cases an event signals that the encryption...