发明名称 |
Multiple signature authentication in conditional access systems |
摘要 |
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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申请公布号 |
US2001010720(A1) |
申请公布日期 |
2001.08.02 |
申请号 |
US20000739982 |
申请日期 |
2000.12.18 |
申请人 |
KIMBALL BRIDGET D.;MILLER KENNETH P.;PETTY DOUGLAS M.;EISENBART ROBERT S.;SPRUNK ERIC J. |
发明人 |
KIMBALL BRIDGET D.;MILLER KENNETH P.;PETTY DOUGLAS M.;EISENBART ROBERT S.;SPRUNK ERIC J. |
分类号 |
H04N5/765;H04H1/00;H04L9/32;H04N7/16;(IPC1-7):H04N7/167;H04L9/00 |
主分类号 |
H04N5/765 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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