A robust and efficient scheme for image encryption-decryption
Prerana Sharma, Shiv Kumar · 2013
Fractional Fourier transform and chaos functions play a key role in many of encryption-decryption algorithms. In this work performance of image encryption-decryption algorithms is quantified and compared using the resemblance of input image to the restored image, quantified by MSE. This work verifies robustness of the proposed image encryption-decryption algorithms. Further, simulations are performed using MATLAB7.7 to quantify performance of the proposed algorithms using MSE. The results obtained in these simulations prove that for the proposed algorithms MSE between restored and original images has a very high value, if decrypted at an incorrect thereby maintaining the robustness of the algorithms. These algorithms are found sensitive to a variation of 1x10 -1 in the fractional orders used in encryption-decryption process.