Information security – Policy
Reexamination Certificate
2005-05-23
2010-11-30
Parthasarathy, Pramila (Department: 2436)
Information security
Policy
C726S002000, C726S027000
Reexamination Certificate
active
07844996
ABSTRACT:
In multimedia systems requiring secure access, a method and apparatus for constructing an access control matrix for a set-top box security processor are provided. A security processor may comprise multiple security components and may support multiple user modes. For each user mode supported, at least one access rule table may be generated to indicate access rules to a security component in the security processor. An access control list comprises information regarding the access rules for a particular user mode to the security components in the security processor. An access control matrix may be generated based on the access control lists for the user modes supported by the security component. The access control matrix may be implemented and/or stored in the security processor for verifying access rights of a user mode.
REFERENCES:
patent: 6028937 (2000-02-01), Tatebayashi et al.
patent: 6038563 (2000-03-01), Bapat et al.
patent: 6850252 (2005-02-01), Hoffberg
patent: 6948183 (2005-09-01), Peterka
patent: 2004/0088558 (2004-05-01), Candelore
Federal Information Processing Standards Publication, Fips Pub 46-3,Data Encryption Standard(DES), Oct. 25, 1999.
Chen Iue-Shuenn
Chen Xuemin
Tan Shee-Yen
Ye Qiang
Zhu Hongbo
Broadcom Corporation
McAndrews Held & Malloy Ltd.
Parthasarathy Pramila
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