Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Central trusted authority provides computer authentication
Reexamination Certificate
2008-05-13
2008-05-13
Tran, Ellen (Department: 2134)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Central trusted authority provides computer authentication
Reexamination Certificate
active
10419251
ABSTRACT:
An authentication system is provided having a revocation list generation apparatus that constructs and stores a revocation list in a tree structure, the revocation list generation apparatus being used in combination with a revocation judgment apparatus. The authentication system improves upon conventional authentication systems because the memory capacity to store a Certificate Revocation List (CRL) in order to identify revoked certificates is reduced. The tree structure corresponds to public key certificate, which are identified by leaf identifies, and nodes from a leaf that corresponds to a revoked public key certificate.
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Ishihara Hideshi
Nakano Toshihisa
Ohmori Motoji
Tatebayashi Makoto
Matsushita Electric - Industrial Co., Ltd.
Tran Ellen
Wenderoth Lind & Ponack LLP
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