Patent ID: 7178029
Filing Date: 2007-02-13
Classification: H04L

Abstract:
1. A system for verifying a digital signature, comprising: a plurality of first computers each having a certificate of a set of certificates and a respective signed message signed in association with the certificate comprising a digest d wherein d=h(h a plurality of second computers in communication with the first computers and configured to receive respective certificates and associated signed messages; and a third computer in communication with the second computers and configured to receive validation requests for the certificates and the signed messages from the plurality of second computers, the third computer configured to validate the certificates, to generate a certificate validation statements, and to provide each of the second computers an acknowledgement and a public key, the acknowledgement comprising in part a certificate validation statement, the signed message, a first proof portion having a confirmation associated with the certificate validation statement and the signed message in combination, and a second proof portion having a signed digest having the confirmation as part of a set of confirmations for the second computers, whereby ones acknowledgement comprises a response to the set of certificates of the first computers in the digest.