Patents by Inventor Mingua Qu

Mingua Qu 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).

  • Key agreement and transport protocol
    Patent number: 6487661
    Abstract: A key establishment protocol includes the generation of a value of cryptographic function, typically a hash, of a session key and public information. This value is transferred between correspondents together with the information necessary to generate the session key. Provided the session key has not been compromised, the value of the cryptographic function will be the same at each of the correspondents. The value of the cryptographic function cannot be compromised or modified without access to the session key.
    Type: Grant
    Filed: April 21, 1995
    Date of Patent: November 26, 2002
    Assignee: Certicom Corp.
    Inventors: Scott A. Vanstone, Alfred John Menezes, Mingua Qu
  • Key agreement and transport protocol with implicit signatures
    Patent number: 6122736
    Abstract: A key establishment protocol between a pair of correspondents includes the generation by each correspondent of respective signatures. The signatures are derived from information that is private to the correspondent and information that is public. After exchange of signatures, the integrity of exchange messages can be verified by extracting the public information contained in the signature and comparing it with information used to generate the signature. A common session key may then be generated from the public and private information of respective ones of the correspondents.
    Type: Grant
    Filed: November 7, 1997
    Date of Patent: September 19, 2000
    Assignee: Certicom Corp.
    Inventors: Scott Vanstone, Alfred John Menezes, Mingua Qu
  • Key agreement and transport protocol with implicit signatures
    Patent number: 5889865
    Abstract: A key establishment protocol between a pair of correspondents includes the generation by each correspondent of respective signatures. The signatures are derived from information that is private to the correspondent and information that is public. After exchange of signatures, the integrity of exchange messages can be verified by extracting the public information contained in the signature and comparing it with information used to generate the signature. A common session key may then be generated from the public and private information of respective ones of the correspondents.
    Type: Grant
    Filed: October 18, 1996
    Date of Patent: March 30, 1999
    Assignee: Certicom Corp.
    Inventors: Scott A. Vanstone, Alfred John Menezes, Mingua Qu