Password Generation Method from Color Image using the DCT Sign of RGB Component

Abstract

The background of this research is to reduce the burden on users for password management with the spread of information devices such as smartphones. The purpose of this research is to generate a unique password character string that reflects the change in color tone in the image using the RGB component. The proposed method extracts the DCT sign of the RGB component by zigzag scan and generates a password character string. As a result, it was found that the proposed method is an image-specific password character string that reflects the difference in color tone.