Patents by Inventor Gyeng Che CHO

Gyeng Che CHO 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).

  • Apparatus and method for authenticating network video recorder security
    Patent number: 11778146
    Abstract: Provided is a security authentication method of a network video recorder (NVR) including assigning a terminal unique index to each of pseudo-random functions included in a pseudo-random function set using terminal information; transmitting a session key having a predetermined expiry time and the pseudo-random function set with the assigned terminal unique index to a terminal; calculating a first terminal unique index for authenticating a first message using a predetermined bitstream of the first message received from the terminal; selecting a first pseudo-random function for authenticating the first message using the calculated first terminal unique index; generating a first independent private key of the terminal for authenticating the first message by inputting the session key and a MAC address of the terminal to the first pseudo-random function; and generating a message authentication code for the first message using the first independent private key and authenticating the first message.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: October 3, 2023
    Assignee: DUDU Information Technologies, Inc.
    Inventors: Young Sun Park, Gyeng Che Cho, Su Man Nam, Jun Geol Kim, Jin Woo Lee
  • APPARATUS AND METHOD FOR AUTHENTICATING NETWORK VIDEO RECORDER SECURITY
    Publication number: 20220311973
    Abstract: Provided is a security authentication method of a network video recorder (NVR) including assigning a terminal unique index to each of pseudo-random functions included in a pseudo-random function set using terminal information; transmitting a session key having a predetermined expiry time and the pseudo-random function set with the assigned terminal unique index to a terminal; calculating a first terminal unique index for authenticating a first message using a predetermined bitstream of the first message received from the terminal; selecting a first pseudo-random function for authenticating the first message using the calculated first terminal unique index; generating a first independent private key of the terminal for authenticating the first message by inputting the session key and a MAC address of the terminal to the first pseudo-random function; and generating a message authentication code for the first message using the first independent private key and authenticating the first message.
    Type: Application
    Filed: January 11, 2022
    Publication date: September 29, 2022
    Inventors: Young Sun PARK, Gyeng Che CHO, Su Man NAM, Jun Geol KIM, Jin Woo LEE