openstego

steganography tool for hiding data within images

TLDR

Embed data in image

$ openstego embed -mf [secret.txt] -cf [cover.png] -sf [output.png]

Extract hidden data

$ openstego extract -sf [stego.png] -xd [output_dir]

Embed with password

$ openstego embed -mf [secret.txt] -cf [cover.png] -sf [output.png] -p [password]

Generate signature

$ openstego gensig -sf [image.png] -sgf [signature.sig]

Verify watermark

$ openstego checkmark -sf [image.png] -sgf [signature.sig]

SYNOPSIS

openstego command [options]

DESCRIPTION

OpenStego is a steganography tool for hiding data within images. It can embed secret messages in cover images and extract them later, with optional encryption.

PARAMETERS

embed

Hide data in image.

extract

Extract hidden data.

gensig

Generate signature.

checkmark

Verify watermark.

-mf file

Message file.

-cf file

Cover file (input image).

-sf file

Stego file (output image).

-p password

Password.

-xd dir

Extract directory.

SUPPORTED FORMATS

$ Cover images: PNG, BMP, GIF, JPEG, WBMP

CAVEATS

Java required. Large messages need large cover images. JPEG quality loss affects data. GUI also available.

HISTORY

OpenStego was created by Samir Vaidya as an open-source steganography application supporting multiple algorithms.