A Scalable and Resilient Dynamic Key Management Scheme for Wireless Sensor Networks

Today we are using tiny devices to make our life comfortable. These devices are also helpful to alert the society about unwanted happenings and discover the hidden knowledge from the environment/nature. In this process, the communication among the devices must to be reliable, robust, and more secure. But these networked devices (WSNs) are operated with limited resources like computation, communication, memory, and battery power. These types of networks surely require energy efficient and lightweight communication systems/protocols. Wireless sensor network (WSNs) of nodes often handle sensitive information. So, the security/privacy (i.e. confidentiality, integrity, and availability (CIA)) of such networks is a typical baseline requirement. These lightweight security solutions do not support traditional security solutions, which are used in computer networks and other networking i.e., Asymmetric Cryptography is not preferable approach for this type of networks. Trustworthy cryptographic security solutions to preserve in WSN are possible with good key management. This paper presents a dynamic key establishment and management systemfor WSNs. Each sensor can be pre-loaded with session key before deployment. The session keyensures the establishment of pairwise keys in the network with a small amount of mathematical computation. The analytical study defines the key connectivity parameter of proposed scheme with respect to existing schemes. In addition, the security analysis presents the preventions of different kind of security attacks including node compromising attack.