Method of nullifying digital certificate, apparatus for...

Details Method of nullifying digital certificate, apparatus for... Method of nullifying digital certificate, apparatus for...

2005-01-07

2009-12-15

Barron, Jr., Gilberto (Department: 2432)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Central trusted authority provides computer authentication

Reexamination Certificate

active

07634654

ABSTRACT:
A method of nullifying digital certificates for nullifying, by means of a communications apparatus, a digital certificate for use by a communications counterpart of the communications apparatus in authenticating includes the step of causing the communications apparatus to transfer to the communications counterpart, when determining based on a normal certificate being a valid digital certificate received from the communications counterpart or information received via a communications path based on the normal certificate that the normal certificate is to be nullified, a certificate for nullifying being a digital certificate for nullifying.

REFERENCES:
patent: 7409553 (2008-08-01), Kumagai et al.
patent: 2002-247028 (2002-08-01), None
patent: 2002-251492 (2002-09-01), None
patent: 2002-353959 (2002-12-01), None
patent: 2003-58049 (2003-02-01), None
patent: 2004-213652 (2004-07-01), None

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