tailieunhanh - Báo cáo hóa học: " Research Article Dynamic Session-Key Generation for 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 Dynamic Session-Key Generation for Wireless Sensor Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2008 Article ID691571 10 pages doi 2008 691571 Research Article Dynamic Session-Key Generation for Wireless Sensor Networks Chin-Ling Chen and Cheng-Ta Li Department of Computer Science and Information Engineering Chaoyang University of Technology Taichung County 41349 Taiwan Correspondence should be addressed to Chin-Ling Chen clc@ Received 28 November 2007 Revised 19 June 2008 Accepted 15 August 2008 Recommended by Jong Hyuk Park Recently wireless sensor networks have been used extensively in different domains. For example if the wireless sensor node of a wireless sensor network is distributed in an insecure area a secret key must be used to protect the transmission between the sensor nodes. Most of the existing methods consist of preselecting m keys from a key pool and forming a key chain. Then the sensor nodes make use of the key chain to encrypt the data. However while the secret key is being transmitted it can easily be exposed during transmission. We propose a dynamic key management protocol which can improve the security of the key juxtaposed to existing methods. Additionally the dynamic update of the key can lower the probability of the key to being guessed correctly. In addition with the new protocol attacks on the wireless sensor network can be avoided. Copyright 2008 . Chen . Li. 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. 1. INTRODUCTION . The composition and application of the wireless sensor network There are four main modules of the wireless sensor network including the sensor module the processor module the communication module and the power module. The major function of each module is introduced below. 1 Sensor module the sensor module is responsible .