Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2008-04-29
2008-04-29
Barron, Jr., Gilberto (Department: 2132)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S186000, C713S176000
Reexamination Certificate
active
10082334
ABSTRACT:
The present invention provides a method for modifying validity of a certificate in a public key infrastructure (PKI)-based authentication system, which is capable of performing online suspension, recovery and revocation of a certificate between a user system and a certificate authority by executing user authentication with guaranteed reliability using user biometric information. Accordingly, there is no need for the user to personally visit a registration authority or certificate authority to modify the certificate validity. The user can easily modify the certificate validity using his/her user system connected online to the certificate authority.
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patent: 2002/0176583 (2002-11-01), Buttiker
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Youm; Research & Development Trends and Domestic Standard on.;Telecommunicatios Review, vol. 10, No. 5, pp. 915-938, Oct. 2000.
Cho Sang Rae
Cho Young Seob
Choi Dae Seon
Jin Seung Hun
Kim Hee Sun
Barron Jr. Gilberto
Electronics and Telecomunications Research Institute
Lowe Hauptman & Ham & Berner, LLP
Perungavoor Venkat
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