Hidefy is a simple tool for embedding text messages into bitmap images.
For simplicity, only 24-bit color bitmaps are supported.
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Developed as an excercise and a proof of concept (PoC).
To compile, simply run:
$ gcc -Wall -pedantic hidefy.c -o hidefy
To encode:
$ ./hidefy -m "secret message" sample.bmp
To decode: (text is printed to stdout by default)
$ ./hidefy -x sample_stego.bmp