Implementation of image cryptography using Rubik's Cube Principle https://www.hindawi.com/journals/jece/2012/173931/
Implementation of image encryption and decryption using Rubix's Cube Principle. This algorithm is based on the paper "A Secure Image Encryption Algorithm Based on Rubik's Cube Principle" by Khaled Loukhaoukha, Jean-Yves Chouinard and Abdellah Berdai.
Given an input image having the three R,G,B matrices of size M X N
Hyperparameters include
α
- used for vector creation
ITER_MAX
- maximum number of times to carry out operations
Create two vectors Kr
and Kc
with |Kr|=M
& |Kc|=N
. The values of these vectors are randomly picked from 0 to 2α -1
Repeat below steps ITER_MAX
number of times
i. Rolling Rows:
The sum of all pixel values of every row of the image RGB matrices are calculated one by one.
If the sum of a given row rowNumber
is even, Roll the row to the right Kr[rowNumber]
times
Otherwise roll to the left Kr[rowNumber]
times.
ii. Rolling Columns:
The sum of all pixel values of every column of the image RGB matrices are calculated one by one.
If the sum of a given row columnNumber
is even, roll the column up Kc[columnNumber]
times.
Otherwise roll the column down Kc[columnNumber]
times.
iii. XORing Pixels:
For every pixel(i,j), XOR the pixel with the below two values
Value #1 - Kc[columnNumber]
if i
is odd else 180 rotated bit version of Kc[columnNumber]
Value #2 - Kr[rowNumber]
if j
is even else 180 rotated bit version of Kr[rowNumber]
Given an encrypted image, vectors Kr
and Kc
& ITER_MAX
, decryption can be done by following the reverse procedure - XORing pixels → Rolling Columns → Rolling Rows ITER_MAX
number of times
Python3 ( https://www.python.org/downloads/ )
rubikencryptor package - Run pip3 install rubikencryptor
$ python3 crypto_client.py -h
usage: crypto_client.py [-h] [--type TYPE] [--image IMAGE]
[--alpha ALPHA] [--iter_max ITER_MAX]
[--key KEY] [--output_image OUTPUT_IMAGE]
from rubikencryptor.rubikencryptor import RubikCubeCrypto
from PIL import Image
# Encrypt image
input_image = Image.open('image1.png')
encryptor = RubikCubeCrypto(input_image)
encrypted_image = encryptor.encrypt(alpha=8, iter_max=10, key_filename='key.txt')
encrypted_image.save('encrypted_image.png')
# Decrypt image
decryptor = RubikCubeCrypto(encrypted_image)
decrypted_image = decryptor.decrypt(key_filename='key.txt')
decrypted_image.save('decrypted_image.png')
Original Image -
Run Encryption on the Original Image
$ python3 crypto_client.py --type encrypt
--image example/original.png
--output_image example/encrypted.png
--key example/encoded_key.txt
--alpha 8 --iter_max 10
encrypted image is stored at example/encrypted.png
& key is stored at example/encoded_key.txt
Encrypted Image -
Run Decryption on the Encryped Image using the Key
$ python3 crypto_client.py --type decrypt
--image example/encrypted.png
--output_image example/decrypted.png
--key example/encoded_key.txt
decrypted image is stored at example/decrypted.png
Decrypted Image -
Note - this is still in early beta version. Performance enhancements, bug fixes & improved styling are expected.
App hosted at https://dannyi96.github.io/Image-Cryptography/
https://github.com/dannyi96/Image-Cryptography/assets/15380498/da99a862-fa52-46eb-9ff2-306e8d504da0
Refer the proposed Roadmap
Main goals include