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Báo cáo hóa học: " Research Article A Speed-Adaptive Media Encryption Scheme for Real-Time Recording and Playback System"

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 A Speed-Adaptive Media Encryption Scheme for Real-Time Recording and Playback System | Hindawi Publishing Corporation EURASIP Journal on Wireless Communications and Networking Volume 2010 Article ID371513 9 pages doi 10.1155 2010 371513 Research Article A Speed-Adaptive Media Encryption Scheme for Real-Time Recording and Playback System Chen Xiao 1 Shiguo Lian 2 Lifeng Wang 3 Shilong Ma 1 Weifeng Lv 1 and Ke Xu1 1 State Key Laboratory of Software Development Environment School of Computer Science Engineering Beihang University Haidian District Beijing 100083 China 2France Telecom R D Beijing Haidian District Beijing 100080 China 3 Department of Electronic Information Engineering Beijing Electronic Science and Technology Institute Fengtai District Beijing 100070 China Correspondence should be addressed to Shiguo Lian sglian@gmail.com Received 29 March 2010 Accepted 2 August 2010 Academic Editor Liang Zhou Copyright 2010 Chen 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 provided the original work is properly cited. The recording and playback system RPS in video conference system needs to store mass of media data real-timely. Considering the security issue media data should be encrypted before storing. Traditional full encryption and partial encryption algorithms are not applicable to RPS because they could not adjust their speed to meet the throughput variation of media data in real-time RPS. In this paper a novel lightweight speed-adaptive media-data encryption SAME scheme is proposed firstly. Secondly the SAME is improved to a packet-based algorithm according to the implementation of data storage in RPS system. Thirdly an RPS oriented queue theory-based autoadaptive speed control mechanism for SAME is designed. Finally these schemes are integrated into the practical system that is AdmireRPS an RPS of a heterogeneous wireless network- HWN- oriented video conference system. Theoretical analysis and experimental results .