tailieunhanh - Báo cáo hóa học: " Research Article Tree Based Protocol for Key Management in Wireless Sensor Networks"

Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Research Article Tree Based Protocol for Key Management in Wireless Sensor Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID 910695 10 pages doi 2010 910695 Research Article Tree Based Protocol for Key Management in Wireless Sensor Networks . Messai 1 M. Aliouat 2 and H. Seba3 1 Ecole Doctorale ReSyD Universite Abderrahmane Mira Bejaia 06000 Algeria 2Departement Informatique faculte des sciences Universite Ferhat Abbes Setif 19000 Algeria 3Laboratoire LIESP Universite Claude Bernard Lyonl IUTLYON1 71 rue Peter Fink 01000 Bourg-en-Bresse France Correspondence should be addressed to H. Seba Received 6 April 2010 Accepted 26 August 2010 Academic Editor Zhiqiang Liu Copyright 2010 . Messai et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. Securing a wireless communication has generally a vital importance particularly when this communication is in a hostile environment like in wireless sensor networks WSNs . The problem is how to create cryptographic keys between sensor nodes to ensure secure communications. Limited resources of sensor nodes make a public key cryptosystem such as RSA not feasible. So most solutions rely on a symmetric cryptosystem. In this paper we propose a new key management scheme based on symmetric cryptography which is well adapted to the specific properties of WSNs. The evaluation of our solution shows that it minimizes memory occupation ensures scalability and resists against the hardest attack compromised nodes. 1. Introduction The convergence of technological advances in microelectronics and wireless communications has enabled the emergence of a promising area Wireless Sensors Networks WSNs . WSNs come from the combination of embedded systems and distributed systems. WSNs have opened the way for a multitude of research areas and the huge .