Title :
Multimedia security in the distributed environment
Author :
Yongliang, Liu ; Gao, Wen ; Liu, Shaohui
Author_Institution :
Sch. of Comput. Sci., Harbin Inst. of Technol., China
fDate :
29 Aug.-1 Sept. 2004
Abstract :
Multicast is very useful way for large-scale distributing multimedia over the network. It can significantly reduce the bandwidth required to transmit same multimedia over the network to multiple receivers. This property makes multicast competitive and attractive. We propose a simple and efficient scheme in order to resolve the issue mentioned above. In our scheme, the content provider generates two different watermarked packets for even´ data packet firstly. Next, he encrypts every two watermarked packets by two different keys, respectively. Finally, he multicasts all of encrypted packets with encrypted keys to intended receivers. In the receiver, only one of every pair of encrypted packets is decrypted relying on the ID stored in tamper-resistant hardware. Every receiver obtains unique watermarked packets because every ID is unique. So, the watermarked packets can be used to trace those receivers who make redistribution of received multimedia content illegally.
Keywords :
cryptography; multicast communication; multimedia communication; telecommunication security; watermarking; content provider; data packet; distributed environment; encrypted packet; intended receiver; large-scale distributing multimedia; multicast security; multiple network receiver; tamper-resistant hardware; watermarked packet; Bandwidth; Computer science; Cryptography; Data security; Hardware; Image storage; Large-scale systems; Mobile communication; Protection; Watermarking;
Conference_Titel :
Communications, 2004 and the 5th International Symposium on Multi-Dimensional Mobile Communications Proceedings. The 2004 Joint Conference of the 10th Asia-Pacific Conference on
Print_ISBN :
0-7803-8601-9
DOI :
10.1109/APCC.2004.1391793