Patent ID: 9699188
Date: 2017-07-04
CPC Classifications: G06F,H04H,H04L

Claim:
1. A method for receiving media data at a client device in a multimedia system, the method comprising: receiving, from a server, a signaling message comprising security information and encryption indication information, the security information comprising at least an indication of security software, wherein the security software is at least one of a downloadable conditional access system (CAS) security software and a downloadable digital rights management (DRM) security software; transmitting, to a security entity, a security software request message comprising authentication information of the client device and the security information; receiving, from the security entity, the downloadable CAS security software when the indication of the security information indicates downloadable CAS security software; receiving, from the security entity, the downloadable DRM security software when the indication of the security information indicates downloadable DRM security software; receiving, from the server, at least one of a service component and a service package, and decrypting the at least one of the service component and the service package according to an indication of the encryption indication information using the received security software, wherein the service package comprises at least one service component and information related to delivery of the at least one service component, and the service component is corresponding to the media data, the media data comprising at least one media data item having a same media data identifier.