Patents by Inventor Keen Chan

Keen Chan 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).

  • Splitting knowledge of a password
    Patent number: 6959394
    Abstract: A password is split into a plurality of pieces. The pieces are stored at different remote servers. The different remote servers have the property that together they can determine that the user has knowledge of the correct password. If any subset of the servers are compromised, the compromised subset cannot convince any remaining servers that they know the password.
    Type: Grant
    Filed: September 29, 2000
    Date of Patent: October 25, 2005
    Assignee: Intel Corporation
    Inventors: Ernie Brickell, Keen Chan
  • Method and apparatus for improved digital message transaction model
    Patent number: 5999628
    Abstract: The invention is a machine-readable medium for implementing an improved electronic transaction model. The machine-readable medium stores at least one non-certficate data block, at least one prior certificate, and a new certificate, the new certificate certifying a combination of less than all of a union of the at least one non-certificate data block and the at least one prior certificate.
    Type: Grant
    Filed: June 22, 1998
    Date of Patent: December 7, 1999
    Assignee: Intel Corporation
    Inventor: Keen Chan
  • Method and apparatus for improved digital message transaction model
    Patent number: 5781635
    Abstract: The invention is a machine-readable medium for implementing an improved electronic transaction model. The machine-readable medium stores at least one non-certificate data block, at least one prior certificate, and a new certificate, the new certificate certifying a combination of less than all of a union of the at least one non-certificate data block and the at least one prior certificate.
    Type: Grant
    Filed: December 29, 1995
    Date of Patent: July 14, 1998
    Assignee: Intel Corporation
    Inventor: Keen Chan