رمزگذاری داده ها بر اساس مکان برای شبکه های حسگر بی سیم (WSN) با کلیدهای دینامیک

ABSTRACT Location-based data encryption for wireless sensor network using dynamic keys

As wireless networks [12, 14] develop over time, more and more wireless applications can be found out in our daily life. To guarantee the data transmission and communication safety, the security requirements of integrity, authentication, confidentiality and non-repudiation [5, 18, 23] must be fulfilled. One of the popular wireless applications is WSNs [3, 4, 16] which consist of a large scale of distributed devices with embedded sensors. These sensors can monitor lots of environmental conditions such as sound, pressure and temperature, etc., and hence are often utilized in military surveillance. Up to the present, the WSN can be also seen in many non-military fields like home automation, healthcare systems, traffic control, fire detection and so on. Because each sensor node has a microprocessor and a wireless communication device, it could be regarded as a mini computer with limited computing power and storage. Energized by batteries, these sensor nodes are usually deployed in wilderness areas without replacement. For facilitating the data transmission between a data aggregator and its nearby sensor nodes, each sensor has a preinstalled secret key. However, once the key is compromised by some malicious adversary, it will endanger the communication messages delivered to the data aggregator. It thus can be seen that a proper data encryption mechanism with efficient key update procedure for WSNs is crucial for increasing the security strength and solving the nodecompromised problem.