imcode

Imcode

Encode your data into a PNG.

In short

The tool receives data and a cypher PNG image and then encodes that data into the given PNG:

It can then decode the data back using the encoded image and the original cypher.

Due to lossless compression of the PNG format, data is also compressed when encoded.

Usage

Imcode can be used as a binary package:

# encode data with cypher and save from stdout
./imcode --from path/to/data.txt --cypher path/to/cypher.png > path/to/encoded.png

# read encoded result from stdin and restore the original data
cat path/to/encoded.png | ./imcode --from=- --cypher path/to/cypher.png --to path/to/result.txt --decode

It can also be imported and used as a Go package:

package main

import (
	"os"

	"github.com/vlad-pbr/imcode/src/codec"
)

func main() {

	// open data to encode
	data, err := os.Open("path/to/data.txt")
	if err != nil {
		panic(err)
	}
	defer data.Close()

	// open cypher png
	cypher, err := os.Open("path/to/cypher.png")
	if err != nil {
		panic(err)
	}
	defer cypher.Close()

	// create destination file
	out, err := os.Create("path/to/encoded.png")
	if err != nil {
		panic(err)
	}
	defer out.Close()

	// encode
	if err := codec.Encode(data, cypher, out); err != nil {
		panic(err)
	}
}

Compile from source

Clone this repository, cd to cloned directory, git checkout to a release tag and build:

go build -ldflags="-X 'main.VERSION=$(git describe --tags)'"