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| Titel: |
Image Encryption Using Differential Evolution Approach in Frequency Domain |
| Auteur: |
Ibrahim S I Abuhaiba Maaly A S Hassan |
| Verschenen in: |
Signal & image processing |
| Paginering: | Jaargang 2 (2011) nr. 1 pagina's 51-69 |
| Jaar: |
2011 |
| Inhoud: |
This paper presents a new effective method for image encryption which employs magnitude and phasemanipulation using Differential Evolution (DE) approach. The novelty of this work lies in deploying theconcept of keyed discrete Fourier transform (DFT) followed by DE operations for encryption purpose. Tothis end, a secret key is shared between both encryption and decryption sides. Firstly two dimensional (2-D) keyed discrete Fourier transform is carried out on the original image to be encrypted. Secondlycrossover is performed between two components of the encrypted image, which are selected based onLinear Feedback Shift Register (LFSR) index generator. Similarly, keyed mutation is performed on thereal parts of a certain components selected based on LFSR index generator. The LFSR index generatorinitializes it seed with the shared secret key to ensure the security of the resulting indices. The processshuffles the positions of image pixels. A new image encryption scheme based on the DE approach isdeveloped which is composed with a simple diffusion mechanism. The deciphering process is aninvertible process using the same key. The resulting encrypted image is found to be fully distorted,resulting in increasing the robustness of the proposed work. The simulation results validate the proposedimage encryption scheme. |
| Uitgever: |
Academy & Industry Research Collaboration Center (AIRCC) (provided by DOAJ) |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
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