https://github.com/pyrou/morpheus

Stop reading matrix, write on it ! Library to encrypt and decrypt data in colors of a picture. Process also known as steganography
https://github.com/pyrou/morpheus

gd-library imagemagick intervention-image php steganography

Last synced: 2 months ago
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Stop reading matrix, write on it ! Library to encrypt and decrypt data in colors of a picture. Process also known as steganography

• Host: GitHub
• URL: https://github.com/pyrou/morpheus
• Owner: pyrou
• License: mit
• Created: 2015-03-19T13:36:55.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2021-03-08T11:15:55.000Z (almost 4 years ago)
• Last Synced: 2024-10-14T10:48:38.082Z (3 months ago)
• Topics: gd-library, imagemagick, intervention-image, php, steganography
• Language: PHP
• Homepage: https://pyrou.github.io/morpheus
• Size: 86.9 KB
• Stars: 25
• Watchers: 6
• Forks: 8
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Morpheus (莫菲斯)

![License](https://img.shields.io/packagist/l/pyrou/morpheus.svg)  

[![Code Climate](https://codeclimate.com/github/pyrou/morpheus/badges/gpa.svg)](https://codeclimate.com/github/pyrou/morpheus)

Morpheus is a library to encrypt and decrypt data in colors of a picture. Process also known as steganography.

The project works regardless with imageMagick, GD library, or the well written [intervention](http://image.intervention.io/) library.

### Installing via Composer

The recommended way to install Morpheus is through [Composer](http://getcomposer.org).

```bash

composer require pyrou/morpheus

```

After installing, you need to require Composer's autoloader:

```php

require 'vendor/autoload.php';

```

### How to use it

With GD library

```php

# write data in image

$im = imagecreatefrompng("source.png");

Morpheus\Data::write("Helloworld", $im);

imagepng($im, "output.png");

# read data from image

$im = imagecreatefrompng("output.png");

assert("Helloworld" === Morpheus\Data::read($im));

```

With Image Magick

```php

# write data in image

$im = new Imagick("source.png");

Morpheus\Data::write("Helloworld", $im);

$im->writeImage("output.png");

# read data from image

$im = new Imagick("output.png");

assert("Helloworld" === Morpheus\Data::read($im));

```

### How does it work ?

Let's explain how it works with an example. Consider this beautiful octocat.

![input](https://raw.githubusercontent.com/pyrou/Morpheus/master/docs/example.png)

```php

require 'vendor/autoload.php';

$im = imagecreatefrompng("source.png");

$data = base64_encode(

    "L'homme est un homme tant qu'il s'évertue ".

    "à s'élever au dessus de la nature, et cette ".

    "nature est à la fois intérieure et extérieure.");

Morpheus\Data::write($data, $im);

imagepng($im, "output.png");

```

Bellow is how humans and computers \(or perspicuous humans\) can see the `output.png` file.

| source.png | output.png | `--debug`\* |

| --- | --- | --- |

| ![input](https://raw.githubusercontent.com/pyrou/Morpheus/master/docs/example.png) | ![output.png](https://raw.githubusercontent.com/pyrou/Morpheus/master/docs/[email protected]) | ![What library sees](https://raw.githubusercontent.com/pyrou/Morpheus/master/docs/[email protected]) |

In fact, the library has slightly changed the coloration of each pixels in upper-half of the file. So slightly that human eyes are NOT able to detect it.

\*For understand what Morpheus did, and what he sees now.