Patents by Inventor Sung Kyong Eun

Sung Kyong Eun 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).

  • Access control method using token having security attributes in computer system
    Patent number: 7290279
    Abstract: Disclosed is an access control method using a token having security attributes in a computer system when a user gains access to a specific file. The computer system adopts a token having encryption, modification, execution, and provision attributes to determine access permission or access denial between a user and a file in such a way that a file access request is controlled. The access control method enciphers a file and stores the enciphered file in a storage unit, so that it can maintain security of the file even though the storage unit is stolen. The access control method enables a system manager to read only enciphered contents of the file when the system manager performs a data backup operation, thereby eliminating limitations in commonly operating a system simultaneously with maintaining file security.
    Type: Grant
    Filed: October 25, 2002
    Date of Patent: October 30, 2007
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Sung Kyong Eun, Jeong Nyeo Kim, Jong Gook Ko, So Young Doo, Joon Suk Yu, Jae Deok Lim
  • Access control method using token having security attributes in computer system
    Publication number: 20030200436
    Abstract: Disclosed is an access control method using a token having security attributes in a computer system when a user gains access to a specific file. The computer system adopts a token having encryption, modification, execution, and provision attributes to determine access permission or access denial between a user and a file in such a way that a file access request is controlled. The access control method enciphers a file and stores the enciphered file in a storage unit, so that it can maintain security of the file even though the storage unit is stolen. The access control method enables a system manager to read only enciphered contents of the file when the system manager performs a data backup operation, thereby eliminating limitations in commonly operating a system simultaneously with maintaining file security.
    Type: Application
    Filed: October 25, 2002
    Publication date: October 23, 2003
    Inventors: Sung Kyong Eun, Jeong Nyeo Kim, Jong Gook Ko, So Young Doo, Joon Suk Yu, Jae Deok Lim