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Steg

This repository contains a PPM image steganography program, written in C

Running

To compile this program into an exe in a command prompt do:

  • $ gcc -o steg.exe steg.c

To run this program(encode):

  • $ ./steg.exe e readin.ppm > decodeMe.ppm
  • steg prompts for a message and a secret and shows file1.ppm with the message encoded within it. Here, the output is redirected to decodeMe.ppm.

To run this program(Decode):

  • $ ./steg.exe d decodeMe.ppm
  • steg prompts for the secret, then shows the message hidden in file.ppm if the secret is the right one (or a wrong message, extracted from the image using the wrong secret).