Method and apparatus for managing key revocation

Details Method and apparatus for managing key revocation Method and apparatus for managing key revocation

1997-04-02

2000-03-28

Cangialosi, Salvatore

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Central trusted authority provides computer authentication

380 30, H04L 900

Patent

active

060444622

ABSTRACT:
The validity status of a digital certificate is accessible even after a certificate has expired. Certificate validity status is stored and retained in a certificate status history database that allows for ease of certificate status retrieval. The validity status of a certificate can be determined for a specified point in time. It is no longer necessary to review multiple certificate revocation lists to determine the validity status of a digital certificate. Status historical information regarding multiple certificate renewals, suspensions and reinstatements can also be obtained from the database.

REFERENCES:
patent: 5371794 (1994-12-01), Diffie et al.
patent: 5687235 (1997-11-01), Perlman et al.
patent: 5745574 (1998-04-01), Muftic
patent: 5889862 (1999-03-01), Kazuo et al.

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