Secure delivery of conditional access applications to mobile receivers

One of the driving forces behind recent developments in mobile communications systems is the potential for such systems to deliver more complex content to con sumers. Current 3G systems are capable of delivering multimedia clips to subscribers' mobile telephones. The next generation of communications systems are expected to develop this service, and collaborate with broadcast systems to provide wireless access to video content from a wide range of mobile devices. For a service like this to achieve its full commercial potential, the owners of the content will require assurance that their material is not illegally accessed. Current broadcast systems accomplish this by using conditional access systems to ensure that only bona fide subscribers have access to the content.