tailieunhanh - Báo cáo hóa học: " MAC Security and Security Overhead Analysis in the IEEE 802.15.4 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: MAC Security and Security Overhead Analysis in the IEEE Wireless Sensor Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2006 Article ID 93830 Pages 1-12 DOI WCN 2006 93830 MAC Security and Security Overhead Analysis in the IEEE Wireless Sensor Networks Yang Xiao 1 Hsiao-Hwa Chen 2 Bo Sun 3 Ruhai Wang 4 and Sakshi Sethi5 1 Department of Computer Science The University of Alabama Box 870290 Tuscaloosa AL 35487-0290 USA 2 Institute of Communications Engineering National Sun Yat-Sen University Kaohsiung 804 Taiwan 3 Department of Computer Science Lamar University Beaumont TX 77710 USA 4 Department of Electrical Engineering Lamar University Beaumont TX 77710 USA 5Equifax Inc. 1505 Windward Concourse Alpharetta GA USA Received 11 October 2005 Revised 14 May 2006 Accepted 17 May 2006 Sensor networks have many applications. However with limited resources such as computation capability and memory they are vulnerable to many kinds of attacks. The IEEE specification defines medium access control MAC layer and physical layer for wireless sensor networks. In this paper we propose a security overhead analysis for the MAC layer in the IEEE wireless sensor networks. Furthermore we survey security mechanisms defined in the specification including security objectives security suites security modes encryption authentication and so forth. Then security vulnerabilities and attacks are identified. Some security enhancements are proposed to improve security and to prevent these attacks such as same-nonce attack denial-of-service attack reply-protection attack ACK attack and so forth. Our results show that for example with 128-bit key length and 100 MIPS encryption overhead is Ms per block and with 100 MIPS and 1500-byte payload the encryption overhead is as high as Ms. Copyright 2006 Yang Xiao 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 .