Title :
Secure Key Management for Flexible Digital Rights Management of Scalable Codestreams
Author :
Bin B. Zhu;Min Feng;Shipeng Li
Author_Institution :
Microsoft Research Asia, Beijing 100080, China. binzhu@microsoft.com
Abstract :
The key management for multi-type, multi-level scalable access control of a fine granularity scalability codestream is addressed in this paper. We first present an efficient partially ordered set (poset) to represent scalable access control so that any access control schemes for a poset can be applied and a single secret key is needed to transfer to a user. We then present a secure key scheme modified from our previous scalable access key scheme for the resulting poset. The key scheme is based on the group Diffie-Hellman key agreement, and is secure
Keywords :
"Access control","Cryptography","Scalability","Codecs","Tiles","MPEG 4 Standard","Video coding","DH-HEMTs","Asia","Mathematics"
Conference_Titel :
Multimedia Signal Processing, 2005 IEEE 7th Workshop on
Print_ISBN :
0-7803-9288-4
DOI :
10.1109/MMSP.2005.248617