METHOD FOR MAINTAINING META INFORMATION OF SECURE DOCUMENT, APPARATUS FOR THE SAME, COMPUTER PROGRAM FOR THE SAME, AND RECORDING MEDIUM STORING COMPUTER PROGRAM THEREOF

This application describes a method, a device, and a computer readable recording medium for maintaining meta information of a secure document. The method may be performed by identifying a reading target document and acquiring information of the reading target document, identifying a window of a program where the reading target document is read and acquiring information of the window, mapping information of the reading target document and information of the window by using a regular expression for the program, mapping meta information of a secure document and the reading target document based on information of the reading target document and mapping meta information of the secure document mapped to the reading target document to a new document created from the reading target document.