Embed data in a PNG, prompting for a passphrase

steghide

  • Steganography tool for JPEG, BMP, WAV and AU file formats.
    More information: <https://github.com/StefanoDeVuono/steghide>.
  • Trick copyright: tl;dr; <https://github.com/tldr-pages/tldr>

steghide embed --coverfile {{path/to/image.png}} --embedfile {{path/to/data.txt}}

click the source code to copy install steghide on any operating system with command-not-found.com