Method for maintaining meta information of secure document, apparatus for the same, computer program for the same, and recording medium storing computer program thereof

A device of maintaining meta information of a secure document, the device comprising:

• a control unit configured to:
• identify a reading target document and acquiring information of the reading target document,
• identify a window of a program where the reading target document is read and acquiring information of the window,
• map information of the reading target document and information of the window by using a regular expression for the program,
• map meta information of the secure document and the reading target document based on information of the reading target document, and
• map meta information of the secure document mapped to the reading target document to a new document created from the reading target document;
• and
• a memory for storing information generated by the control unit,
• wherein information of the window includes a caption name of the window.