Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2006-07-18
2006-07-18
Jung, David (Department: 2134)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S168000, C713S150000
Reexamination Certificate
active
07080251
ABSTRACT:
A time period which is expended since a request for the authentication of the validity of a public key certificate till the authentication of the validity, is shortened. A certificate validity authentication center VC periodically searches for and verifies paths which extend from a bridge certification authority CAbridgeto individual terminal admitting certification authorities CA, and it registers the paths whose verifications have held good, in a path database in association with the respective terminal admitting certification authorities CA. Besides, in a case where the request for the authentication of the validity of a certificate has been made by an end entity EE, whether or not a path associated with the terminal admitting certification authority CA which admits the end entity, and a path associated with the terminal admitting certification authority CA which has issued the certificate being a subject for the request are registered in the path database is checked, and the subject certificate is judged valid only when both the paths are registered.
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Fujishiro Takahiro
Kumagai Yoko
Miyazaki Yutaka
Morio Tomoharu
Tezuka Satoru
Hitachi , Ltd.
Jung David
Mattingly ,Stanger ,Malur & Brundidge, P.C.
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