Patent ID: 8667304

Claim:
A non-transitory machine readable medium containing executable computer program instructions which when executed by a data processing system cause said system to perform a method to control a presentation of content, wherein a first conditional access server has authenticated a client of the first conditional access server through a first authentication process that used a first root of trust, the method comprising: receiving, at a second conditional access server, content from the client of the first conditional access server in a first security domain; processing the content on the second conditional access server; authorizing a client of the second conditional access server to present content in accordance with authorization the second conditional access server received from the first conditional access server; transmitting, from the second conditional access server to the client of the second conditional access server through a network connection in a second security domain, the content that is in an access controlled format that is specified by the second conditional access server; and wherein the second conditional access server authenticates client devices of the second conditional access server through a second authentication process which is independent of the first authentication process and wherein the second authentication process uses a second root of trust which is independent of and different than the first root of trust, and wherein the second conditional access server is configured to substitute the first security domain with the second security domain for the client devices under the second root of trust.