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: IResearch Article Efficient Key Agreements in Dynamic Multicast Height Balanced Tree for Secure Multicast Communications in Ad Hoc Networks | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2011 Article ID 382701 15 pages doi 2011 382701 Research Article Efficient Key Agreements in Dynamic Multicast Height Balanced Tree for Secure Multicast Communications in AdHoc Networks Hua-Yi Lin1 and Tzu-Chiang Chiang2 1 Department of Information Management China University of Technology Hsing-Chu 30301 Taiwan 2 Department of Information Management Tunghai University Taichung 41349 Taiwan Correspondence should be addressed to Tzu-Chiang Chiang steve312kimo@ Received 1 June 2010 Revised 14 September 2010 Accepted 21 November 2010 Academic Editor Damien Sauveron Copyright 2011 . Lin and . Chiang. 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. Alterations and unpredictability of the network topology in mobile ad hoc networks MANETs are less capable of ensuring the security of multicast data transmissions than in conventional networks. Despite the recent development of many key agreement protocols for MANETs to our knowledge only a few secure multicast data transmissions have been integrated into the key agreement. This study proposes a dynamic multicast height balanced group key agreement DMHBGKA that allows a user in a multicast group to efficiently and dynamically compose the group key and securely deliver multicast data from a multicast source to the other multicast group users in wireless ad hoc networks. The hierarchical structure of the proposed key agreement partitions the group members into location-based clusters capable of reducing the cost of communication and key management when member joins or leave networks. Moreover based on elliptic curve Diffie-Hellman ECDH cryptography key management the proposed scheme not only provides effective and efficient dynamic group key .
