Authentication of digital certificates used by portable...

Details Authentication of digital certificates used by portable... Authentication of digital certificates used by portable...

2002-05-24

2010-11-23

Parthasarathy, Pramila (Department: 2436)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S150000, C713S151000, C713S156000

Reexamination Certificate

active

07840812

ABSTRACT:
A synchronization device checks the revocation status of a digital certificate used by a portable computing device, such as a personal digital assistant or mobile phone. The synchronization device typically sends the revocation status to the portable device during a periodic synchronization operation. Revocation status checking can occur using minimal processing, memory or network access resources of the portable device. In some embodiments, the synchronization device is a desktop personal computer, or a server within a mobile communication network. In other embodiments, the portable device uses a certificate and sends the certificate to the synchronization device during a subsequent synchronization operation. In yet other embodiments, the synchronization device checks the status of a certificate, generates a summary for the certificate and transmits the summary to the portable device prior to its use of the certificate. In yet other embodiments, the synchronization device manages certificates for one or more portable devices.

REFERENCES:
patent: 5666416 (1997-09-01), Micali
patent: 2005/0148323 (2005-07-01), Little et al.

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