Multiple signature authentication in conditional access systems
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Aug 2, 2001
app pub date -
Dec 18, 2000
filing date -
Nov 12, 1999
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
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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