TY - GEN
T1 - A dynamic optimal selective control mechanism for multi-datastream security in video conference system
AU - Chen, Xiao
AU - Shilong, Ma
AU - Ke, Xu
AU - Lifeng, Wang
AU - Weifeng, Lv
PY - 2007
Y1 - 2007
N2 - Since media data in streaming media system are high volume and latency sensitive, transmission security of them have been a challenge task. To solve the problem, partial encryption and other media encryption schemes have been proposed. However those schemes are tradeoffs between security and efficiency. In a multi-stream system, using one media encryption scheme to protect all the media streams will induce either unscalability or insecurity. In this paper, the idea of partial encryption is generalized from encrypting a subset of one stream to multi-streams. A mathematical model based dynamic optimal selective control mechanism for multi-datastream security is proposed. Since the simplified model is 0-1 knapsack problem, which is NP-hard, a greedy heuristic incremental approximate algorithm is designed. Theoretical and experimental analyses show the performance of the algorithm is effective enough to support real-time applications. A prototype has been implemented in our Admire system, and used in a confidential project.
AB - Since media data in streaming media system are high volume and latency sensitive, transmission security of them have been a challenge task. To solve the problem, partial encryption and other media encryption schemes have been proposed. However those schemes are tradeoffs between security and efficiency. In a multi-stream system, using one media encryption scheme to protect all the media streams will induce either unscalability or insecurity. In this paper, the idea of partial encryption is generalized from encrypting a subset of one stream to multi-streams. A mathematical model based dynamic optimal selective control mechanism for multi-datastream security is proposed. Since the simplified model is 0-1 knapsack problem, which is NP-hard, a greedy heuristic incremental approximate algorithm is designed. Theoretical and experimental analyses show the performance of the algorithm is effective enough to support real-time applications. A prototype has been implemented in our Admire system, and used in a confidential project.
UR - https://www.scopus.com/pages/publications/46449126932
M3 - 会议稿件
AN - SCOPUS:46449126932
SN - 1424410177
SN - 9781424410170
T3 - Proceedings of the 2007 IEEE International Conference on Multimedia and Expo, ICME 2007
SP - 871
EP - 874
BT - Proceedings of the 2007 IEEE International Conference on Multimedia and Expo, ICME 2007
T2 - IEEE International Conference onMultimedia and Expo, ICME 2007
Y2 - 2 July 2007 through 5 July 2007
ER -