Multiple signature authentication in conditional access systems

Details Multiple signature authentication in conditional access systems Multiple signature authentication in conditional access systems

H - Electricity

04

L

H04L 9/32 (2006.01) H04N 7/16 (2006.01)

Patent

CA 2365504

The invention relates to authenticating information sent to a set top box. In one embodiment, a process for distributing information to a plurality of conditional access receivers with a plurality of different signature checking capabilities is disclosed. In one step, a first signature is generated over the information and a second signature is generated over the information. The first and second signatures and the information are sent to the plurality of conditional access receivers.

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