Patents Assigned to Eglobal System Co.
  • Method for indexing encrypted column
    Patent number: 8281153
    Abstract: The present invention relates to a method of creating indexes so that an index scan can be worked for columns in a database encrypted by means of secrete key cipher algorithm. The method of creating indexes according to the present invention comprises the steps of: re-encrypting to be able to maintain the sort ordering based on a plain text; creating new indexes based on the re-encrypted data; and configuring domain index architecture of encrypted columns so that the created index is used for the index scan in a query statement.
    Type: Grant
    Filed: September 28, 2007
    Date of Patent: October 2, 2012
    Assignee: Eglobal System Co.
    Inventors: Hee-Chang Kang, Dae-Won Mun, Yu-ho Kim