Week 3

This is the design for the Graphical interface for the program.

This flowchart shows that the program can provide three functions for user to choose. Function 'hide text in image', function 'hide image in image', function 'decrypt the hidden image'. In this program, users can choose the function which they want. In the encode function, users can hide the information in the image and then set the password to ensure the data's security. In the decode function, people can get the hidden information if they input the correct password. But if the password is wrong, they can only get the original image which does not show the concealed data. Also in the program, users can close the window or go back to the last window at anytime they want.