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A Key Establishment Scheme for Mobile Wireless Sensor Networks Using Post-Deployment Knowledge

2011; Volume: 3; Issue: 4 Linguagem: Inglês

10.5121/ijcnc.2011.3405

0975-2293

Ashok Kumar Das,

Mobile Ad Hoc Networks

Establishment of pairwise keys between sensor nodes in a sensor network is a difficult problem due to resource limitations of sensor nodes as well as vulnerability to physical captures of sensor nodes by the enemy.Public-key cryptosystems are not much suited for most resource-constrained sensor networks.Recently, elliptic curve cryptographic techniques show that public key cryptosystem is also feasible for resource-constrained sensor networks.However, most researchers accept that the symmetric key cryptosystems are viable options for resource-constrained sensor networks.In this paper, we first develop a basic principle to address the key pre-distribution problem in mobile sensor networks.Then, using this developed basic principle, we propose a scheme which takes the advantage of the post-deployment knowledge.Our scheme is a modified version of the key prioritization technique proposed by Liu and Ning.Our improved scheme provides reasonable network connectivity and security.Moreover, the proposed scheme works for any deployment topology.