This directory contains program RATC used in paper:

Sergio Vicente Denser Pamboukian  and  Hae Yong Kim
REVERSIBLE DATA HIDING AND REVERSIBLE AUTHENTICATION WATERMARKING FOR BINARY IMAGES

ratc.zip - contains executable RATC program and an example.

1) Download ratc.zip and uncompress it. The following files will be extracted: 

mickey.bmp          - an example image.
mickey_modified.bmp - mickey.bmp authenticated, and modified.
ratc.exe            - ratc program
runtest.bat         - sequence of operations to test the program

2) Execute runtest.bat. It will execute the following operations:

::authenticate mickey.bmp using secretkey=7, yielding mickey_marked.bmp
ratc s mickey.bmp 7 mickey_marked.bmp                      
::verify the authenticity of mickey_marked.bmp, and extract the cover image mickey_recovered.bmp
ratc v 7 mickey_marked.bmp mickey_recovered.bmp
::try to verify the authenticity of mickey_modified.bmp
ratc v 7 mickey_modified.bmp mickey_modified_recovered.bmp