This paper presents a new effective method for image encryption which employs
magnitude and phase manipulation using Differential Evolution (DE) approach.
The novelty of this work lies in deploying the concept of keyed discrete
Fourier transform (DFT) followed by DE operations for encryption purpose. To
this 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.