Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Central trusted authority provides computer authentication
Reexamination Certificate
2005-04-15
2009-11-17
Zand, Kambiz (Department: 2434)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Central trusted authority provides computer authentication
C713S155000, C713S165000, C713S168000, C713S175000, C380S043000, C726S004000
Reexamination Certificate
active
07620809
ABSTRACT:
A method of registering network devices in a digital rights management system (DRMS) includes receiving a digital certificate transmitted by the network device requesting registration and verifying the validity of the certificate. The DRMS may then send cryptographic information to the applying network device. The network device may be authorized for registration via a user interface to the DRMS. The DRMS may conduct a proximity test to determine of the network device is proximate to the DRMS. If the certificate is validated, authorization is received, and the proximity test indicates that the network device is proximate to the DRMS, the network device may be registered. A registered network device is then authorized to play protected digital content.
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Cutter Benjamin Brooks
Evans Brian P.
Oliveira Eduardo P.
Paka Anand D.
Prologo Richard D.
Bayou Yonas
Microsoft Corporation
Woodcock & Washburn LLP
Zand Kambiz
LandOfFree
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