Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Protection at a particular protocol layer
Reexamination Certificate
2005-04-19
2005-04-19
Wright, Norman M. (Department: 2134)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Protection at a particular protocol layer
C713S152000
Reexamination Certificate
active
06883100
ABSTRACT:
In accordance with the invention, on-line group servers issue group membership or group non-membership certificates upon request. Furthermore, when a requester requests a group certificate for a particular entity, the associated group server makes a dynamic decision regarding the entity's membership in the group rather than simply referring to a membership list. These capabilities provide for, among other things, the implementation of “nested” groups, wherein an entity may indirectly prove membership in a first, or nested, group by proving membership in a second group which is a member of the first group. In the nested group situation, the dynamic decision may involve the group server of the nested group obtaining proof of the entity's membership or non-membership in the second group. Proof of membership or non-membership may include a group certificate and/or a group membership list.
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Anderson Anne H.
Elley Yassir K.
Hanna Stephen R.
Mullan Sean J.
Perlman Radia J.
Kudirka & Jobse LLP
Sun Microsystems Inc.
Wright Norman M.
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