Patents by Inventor Woo-Kwon KOO

Woo-Kwon KOO 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).

  • Public encryption method based on user ID
    Patent number: 9419798
    Abstract: A public encryption method based on user ID includes: setting, by a key generation server, at least one public parameter and master key used for generating a private key; receiving, by the key generation server, an inherent ID of a user from a receiving terminal, generating a private key based on the public parameter, the master key and the ID, and transmitting the generated private key to the receiving terminal; receiving, by a transmitting terminal, the public parameter and the ID from the key generation server, encrypting a message to generate a ciphertext, and transmitting the generated ciphertext to the receiving terminal; and receiving, by the receiving terminal, the ciphertext and the private key, and decrypting the ciphertext based on the received private key to obtain a message.
    Type: Grant
    Filed: January 17, 2014
    Date of Patent: August 16, 2016
    Assignee: KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Dong Hoon Lee, Jong-Hwan Park, Woo-Kwon Koo
  • PUBLIC ENCRYPTION METHOD BASED ON USER ID
    Publication number: 20150019868
    Abstract: A public encryption method based on user ID includes: setting, by a key generation server, at least one public parameter and master key used for generating a private key; receiving, by the key generation server, an inherent ID of a user from a receiving terminal, generating a private key based on the public parameter, the master key and the ID, and transmitting the generated private key to the receiving terminal; receiving, by a transmitting terminal, the public parameter and the ID from the key generation server, encrypting a message to generate a ciphertext, and transmitting the generated ciphertext to the receiving terminal; and receiving, by the receiving terminal, the ciphertext and the private key, and decrypting the ciphertext based on the received private key to obtain a message.
    Type: Application
    Filed: January 17, 2014
    Publication date: January 15, 2015
    Applicant: Korea University Research and Business Foundation
    Inventors: Dong Hoon LEE, Jong-Hwan Park, Woo-Kwon KOO