Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2005-12-27
2005-12-27
Vu, Kim (Department: 2135)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S156000, C713S157000, C713S158000, C713S168000, C713S173000, C713S175000, C713S176000, C707S793000, C707S793000
Reexamination Certificate
active
06981148
ABSTRACT:
A verification method and system including a verifier which can both interpret policies and determine if they are satisfied, and request and obtain relevant certificates. This new architecture includes a verifier which itself can both direct a retrieval mechanism and use a local database of information. Users and applications can obtain and supply certificates to the verifier and the local database. The verifier may invoke a retrieval mechanism to obtain necessary certificates from other authenticated data servers and store them in a secondary database. The flexibility to allow for both on-line and off-line authenticated data server responses for verification is encompassed, as is an enhanced system for security including revocation of certificates using a polarity discipline, which allows data used for revocation to be handled with the same system used for other verification data without imperiling security.
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Gunter Carl A.
Jim Trevor
Dada Beemnet W
RatnerPrestia
University of Pennsylvania
Vu Kim
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