steghide
Steganography tool for JPEG, BMP, WAV, and AU file formats. tldr-pages
On Linux
Linux
Embed data in a PNG, prompting for a passphrase
steghide embed --coverfile path/to/image.png --embedfile path/to/data.txtIdentifyExtract data from a WAV audio file
steghide extract --stegofile path/to/sound.wavIdentifyDisplay file information, trying to detect an embedded file
steghide info path/to/file.jpgIdentifyEmbed data in a JPEG image, using maximum compression
steghide embed --coverfile path/to/image.jpg --embedfile path/to/data.txt --compress 9IdentifyGet the list of supported encryption algorithms and modes
steghide encinfoIdentifyEmbed encrypted data in a JPEG image, e.g. with Blowfish in CBC mode
steghide embed --coverfile path/to/image.jpg --embedfile path/to/data.txt --encryption blowfish cbcIdentify