stegano

stegano hides files or short messages inside carrier media and later extracts them from the resulting image or audio file. This command-line steganography utility uses least-significant-bit encoding, allowing one or several files to be concealed in a single carrier. It is aimed at people who prefer terminal-based security and information-handling tools, with an emphasis on straightforward commands and efficient operation.

PNG images and WAV audio are supported as carrier formats, and a JPG can be used as input while producing a PNG output. Concealed data can be protected with XChaCha20-Poly1305 encryption and Argon2id, while decoded content can also be exported as unfiltered raw binary data for inspection. Written in Rust, stegano is designed for memory safety and remains compatible with the Windows version of stegano for image encoding and decoding.

The project supports Windows, macOS, and Linux, although this cataloged build targets Linux users working from a terminal. Linux use requires snapd, and the available architecture is x86_64 (amd64). Sven Kanoldt publishes stegano as open-source software, and the current version is v0.5.1-9-gfb7c831. It suits privacy-minded users, developers, and researchers who need to demonstrate or perform image and audio steganography without a graphical interface.