Image Encryption/Decryption based on Rubik Cube 's principle and AES

Overview

Image Encryption/Decryption based on Rubik Cube 's principle and AES

Our final project for Theory of Crytography class.

Our Image Encryption/Decryption method based on:

My implementation can be introduced by four main parts:

Encryption

  • Three channels of the image are splited before encrypting with Rubik cube algorithm. The key of the encryption is encrypted by AES.

  • After that, these encrypted channels are combined to generate the Encrypted Image.

Decryption

The flow of decryption is the inverse transformation which is described below:

  • Split the encrypted image to 3 encrypted channels

  • Get the original key from the AES decrypt function

  • Decrypt 3 channels with the decrypted key

The Encrypted Image

Evaluation

I propose two measures to quantify the differ between the encrypted image and its original form:

  • Number of pixels change rate (NPCR)
  • The unified average changing intensity (UACI)

Results

Original Image and Encrypted Image

ori_enc_img

Histogram

histogram

Owner
Danny
A normal guy who is passionate about Machine Learning.
Danny
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