Patent ID: 7707406
Filing Date: 2010-04-27
Classification: G06F,H04L

Abstract:
1. A method for providing a certificate in a digital security system, the method utilizing at least one computer configured to perform the steps of: issuing a first certificate from a first certificate authority (CA), wherein the first certificate has a first renewal period; issuing a second certificate from a second CA by using at least a portion of information in the first certificate, said second certificate having a validity period, said first renewal period and said validity period overlapping one another; issuing a third certificate unique to a given device by using at least a portion of information in the second certificate; and creating a new certificate at the first CA to be used in subsequent issuing steps of the first and second CAs in place of the first certificate, wherein a validity chain of the second certificate remains valid after the step of creating the new certificate has been performed, said third certificate being stored in said given device.