Steggy CLI Tool

Written in Rust, features a simple cli and a client-side webapp. This tool hides data within the least significant bit of an image. Obfuscation techniques are utilized to make the

Install

brew tap oliverbutler/steggy
brew install steggy

Usage

Encode

steggy encode -f secret.txt -i image.jpg -o out.png

Decode

Decode will output the image inside an encoded image in the same path, optionally allows an output path for the resulting data.

steggy decode -i out.png

Image Data Structure

This is the structure of a steggy encoded image file.

Pos	Length	Field
0	1 byte	Flags (unused)
1	4 bytes	Name length
2	4 bytes	Data length
6	16 bytes	Salt
22	X	Name
22+x	Y	Data