Image Cryptography Based on Rubix's Cube Principle

Implementation of image encryption and decryption using Rubix's Cube Principle. This algorithm is based on the paper which can be found at https://www.hindawi.com/journals/jece/2012/173931/

Prerequisites

You need to have Python2 on your system. Follow instructions at https://www.python.org/downloads/
You also need to install numpy and Image libraries.

On Ubuntu

sudo apt-get install python-numpy
sudo apt-get install python-imaging

Running

1. To encrypt an image, first place that image in the input/ folder

2. Then run
   python encrypt.py <image_name>
   The encrypted image can be found at the encrypted_images/ folder.
   The keys generated during encryption is stored in the keys.txt file.
   (Note: The number of iterations of encryption to be performed can be adjusted by changing the ITER_MAX value in the encrypt.py file. Larger values will make encryption more secure but it is more time consuming)

3. To decrypt the image, run
   python decrypt.py <image_name>
   And Then enter the value of the Keys (Kr, Kc and ITER_MAX)
   The decrypted image can be found at the decrypted_images/ folder.

Example

1. To encrypt the image pic3.png stored in the input folder

Run python encrypt.py pic3.png

The encrypted Picture can be found at encrypted_images/pic3.png

The keys are stored in keys.txt

2. To decrypt the image

Run python decrypt.py pic3.png

and enter the key values (Kr, Kc and ITER_MAX)

The decrypted Picture can be found at decrypted_images/pic3.png