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Security services and policy enforcement for electronic data

  • US 6,510,513 B1
  • Filed: 01/13/1999
  • Issued: 01/21/2003
  • Est. Priority Date: 01/13/1999
  • Status: Expired due to Term
First Claim
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1. A computerized method for providing security services and policy enforcement for electronic data, the method comprising the steps of:

  • submitting, by a first client, a certificate request to a server;

    receiving, by the server, the certificate request, authenticating the first client, generating a certificate, registering the certificate, and transmitting the certificate to the first client;

    receiving, by the first client, the certificate, creating an authenticated file containing the certificate and a distribution unit, generating a first digest from the authenticated file using a hashing algorithm, and submitting the first digest to the server;

    time stamping, by the server, the digest, logging the digest, and transmitting a time stamped receipt to the first client;

    acquiring, by a second client, the authenticated file, generating a second digest from the authenticated file using the hashing algorithm, and submitting the second digest to the server; and

    receiving, by the server, the second digest, comparing the second digest to the logged first digest, and transmitting a message to the second client as a result of the comparison.

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