Patents by Inventor Dengguo Feng

Dengguo Feng 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).

  • Tolerant digital certificate distribute system and distribute method
    Patent number: 7386131
    Abstract: A digital certificate issuing system with intrusion tolerance ability and the issuing method thereof are disclosed. The system comprises an offline secret key distributor, at least one online task distributor, k online secret share calculators and m online secret share combiners.
    Type: Grant
    Filed: November 5, 2003
    Date of Patent: June 10, 2008
    Assignee: Graduate School of Chinese Academy of Sciences
    Inventors: Jiwu Jing, Dengguo Feng
  • Tolerant digital certificate distribute system and distribute method
    Publication number: 20040103276
    Abstract: Disclosed is a digital certificate issuing system with intrusion tolerance ability and the issuing method thereof. The system comprises a task distributor, k calculators, m combiners and a sub-secret-key distributor. The processing of distributing a private key of a Certificate Authority comprises the steps of: the sub-secret-key distributor expressing a private key d as a sum of t sub-secret-keys dji and one sub-secret-key ca, and t<k; the distributor distributing k×l random numbers dji into i dji per calculator and sends them to k calculators, obtaining a set of ca and their equation combination representations and sending them to m combiners for pre-storage according to the combiner security condition.
    Type: Application
    Filed: November 5, 2003
    Publication date: May 27, 2004
    Inventors: Jiwu Jing, Dengguo Feng