Color Image Encryption by Component Based Partial Random Phase Encoding
Shyamli Jain, Ajay Khunteta · 2018 International Conference on Inventive Research in Computing Applications (ICIRCA) · 2018
A variety of image encryption algorithms have been initiated to prevent personal and confidential images from various security attacks. This paper is proposing an encryption and decryption idea on colour image by using component based Partial Random Phase Encoding (PRPE) and Fractional Fourier Transformation. The encoding converts the input RGB colour image into HSV (Hue, Saturation, Value) format. In the formation of HSV, the order of Hue and Saturation contains phase masking of higher same order while V consists of lower order than H and S. A Fractional Fourier transform pretend as a key which offers extra degree of security in different orders. By using correct keys and Fractional orders, primary images can be recovered. The HSV image has reverted back to the RGB format again in decryption method. The level of encryption of various techniques compute the robustness of image and it is verified by mean square error (MSE) as well as peak signal to noise ratio (PSNR) value. Simulation results of versatile analysis shows that this algorithm provides high security and resourceful for colour image.