An Efficient Key Management Scheme for Secure Data Access Control in Wireless Broadcast Services

Wireless broadcast is an effective approach to disseminate data to a number of users. To provide secure access to data in wireless broadcast services, symmetric key - based encryption is used to ensure that only users who own the valid keys can decrypt the data. Regarding various subscriptions, an efficient key management to distribute and change keys is in great demand for access control in broadcast services. In this paper, the authors propose an efficient key management scheme (namely KTR) to key distribution with regarding to complex subscription options and user activities.