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Lalitha, T.
- Cluster Based Key Management & Authentication Technique for Wireless Sensor Networks
Authors
1 Bharathiar University, Coimbatore, Tamilnadu, IN
Source
Wireless Communication, Vol 4, No 2 (2012), Pagination: 74-78Abstract
In wireless sensor networks, the security attacks are due to the compromise of the large part of the network which can cause node damage or disturbance in the data flow. At the time of re-keying process, if the re-key from the sink is not securely transmitted to the compromised node, it will lead to denial of service attack. In this paper, we propose a cluster based key management technique for authentication in wireless sensor networks. Initially, clusters are formed in the network and the cluster heads are selected based on the energy cost, coverage and processing capacity. The sink assigns cluster key to every cluster and an EBS key set to every cluster head. The EBS key set contains the pairwise keys for intra-cluster and inter-cluster communication. The cluster head upon detecting a compromised node in its cluster sends a request to sink to perform re-keying operation. The re-keying process utilizes the hashing function for authentication and nodes are recovered in a secured manner.- Energy Efficient Cluster Based key Management Technique for Wireless Sensor Networks
Authors
1 Bharatiar University, Coimbatore, Tamilnadu, IN
Source
Oriental Journal of Computer Science and Technology, Vol 4, No 2 (2011), Pagination: 293-304Abstract
Wireless Sensor Networks (WSN) is vulnerable to node capture attacks in which an attacker can capture one or more sensor nodes and reveal all stored security information which enables him to compromise a part of the WSN communications. Due to large number of sensor nodes and lack of information about deployment and hardware capabilities of sensor node, key management in wireless sensor networks has become a complex task. Limited memory resources and energy constraints are the other issues of key management in WSN. Hence an efficient key management scheme is necessary which reduces the impact of node capture attacks and consume less energy. In this paper, we develop a cluster based technique for key management in wireless sensor network. Initially, clusters are formed in the network and the cluster heads are selected based on the energy cost, coverage and processing capacity. The sink assigns cluster key to every cluster and an EBS key set to every cluster head. The EBS key set contains the pairwise keys for intra-cluster and inter-cluster communication. During data transmission towards the sink, the data is made to pass through two phases of encryption thus ensuring security in the network. By simulation results, we show that our proposed technique efficiently increases packet delivery ratio with reduced energy consumption.
Keywords
Wireless Sensor Networks, Key Management, Data Transmission, Attacks, Cluster.- Ectodermal Dysplasia-a 10-Year Prospective Study of Implant and Tooth Retained Full Mouth Fixed Restoration
Authors
1 Dept of Prosthodontics & Implantology, Sri Balaji Dental College & Hospital, Chennai, IN
2 Dept of Oral Medicine & Radiology, Sri Balaji Dental College & Hospital, Chennai, IN