Patents by Inventor Douglas Q. Dexter

Douglas Q. Dexter has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 8943310
    Abstract: According to one embodiment of the present invention, a method of establishing a digital certificate on an endpoint includes establishing a connection between a proxy function module and the endpoint. The proxy function module is remotely located from the endpoint and operable to communicate with the endpoint and a certificate authority. Authentication information is generated at the endpoint. A portion of the authentication information is transmitted to the proxy function module. The proxy function module obtains a digital certificate based on the portion of the authentication information. The digital certificate is received at the endpoint from the proxy function module.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: January 27, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Robert T. Bell, Douglas Q. Dexter
  • Patent number: 8312263
    Abstract: According to one embodiment of the present invention, a method of updating a certificate trust list on a first endpoint includes receiving an initial certificate trust list at the first endpoint. The initial certificate trust list includes authentication data for at least a second endpoint. Digitally signed information is received at the first endpoint and authentication is initiated against the authentication data for the at least a second endpoint. The authentication occurs only if the digital signature is complementary to the authentication data for the at least a second endpoint. After successful authentication, the initial certificate trust list is updated with the information to yield an updated certificate trust list.
    Type: Grant
    Filed: January 25, 2005
    Date of Patent: November 13, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Robert T. Bell, Douglas Q. Dexter