csteg

LSB steganography tool written in C

Building

Make sure to have a version of libpng installed

git clone https://github.com/jakergrossman/csteg
cd csteg
make

Usage

To encode files:

csteg -w -i png_in -d data_file_in -o png_out

To decode files:

csteg -r -i png_in

Flag descriptors:

-f             do not prompt for confirmation when 
               operation would overwrite existing files

-w             write data to file

-r             write data from file

-i <filename>  specify input PNG file

-d <filename>  specify input data file

-o <filename>  specify output PNG file