Patents by Inventor Hongsub Lee

Hongsub Lee 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).

  • Publication number: 20030012386
    Abstract: The present invention discloses a software-based commercial key escrow system (KES) for the PKI environment that enables an entity such as the court to monitor communications of users suspected of unlawful activities while protecting the privacy of law-abiding users.
    Type: Application
    Filed: November 30, 2001
    Publication date: January 16, 2003
    Inventors: Jeeyeon Kim, Seungjoo Kim, Hyun-Jo Kwon, Hae-Ryong Park, Hongsub Lee
  • Publication number: 20020064278
    Abstract: A method and apparatus are disclosed for improving RSA public key cryptographic scheme. The present invention discloses a cryptographic system with a modulus of the form n=ptqs where p and q are distinct prime numbers and t and s are distinct positive integers.
    Type: Application
    Filed: March 2, 2001
    Publication date: May 30, 2002
    Inventors: Seongam Lim, Seungjoo Kim, Hongsub Lee