• Kamini Kanchan
• Brij Kishore
• Manish Sharma

Data security is a prime objective of various researchers & organizations. Because we have to send the data from one end to another end so it is very much important for the sender that the information will reach to the authorized receiver & with minimum loss in the original data. Data security is required in various fields like banking, defence, medical etc. So our objective here is that how to secure the data. So for this purpose we have to use encryption schemes. Encryption is basically used to secure the data or information which we have to transmit or to store. Various methods for the encryption are provided by various researchers. Some of the methods are based on the random keys & some are based on the scrambling scheme. Chaotic map, logistic map, Fourier transform & Fractional Fourier transform etc. are widely used for the encryption process. Now day’s image encryption method is very popular for the encryption scheme. The information is encrypted in the form of image. The encryption is done in a format so no one can read that image. Only the person who are authenticated or have authentication keys can only read that data or information. So this work is based on the same fundamental concept. Here we use Linear Canonical Transform for the encryption process. Data encryption technology is used to benefit protection against loss, exploitation or alteration of private information. Encrypting plain text results in indecipherable rubbish called cipher text. Encryption is used to guarantee the hidden information from anyone of concern not intended to, even those who can comprehend the encrypted data. The procedure of backsliding cipher text to its original plain text is considered as decryption. Various parameters are calculated which shows various aspects. Like Change in the value of MSE with change in order of transform tells the quality of encrypted image. Correlation coefficient of encrypted and decrypted image also shows the difference between the encrypted and decrypted image. The original image is then reconstructed and histogram of all these images analyzed. Robustness and imperceptibility of images increases by the proposed method.

Linear Canonical Transform (LCT); Mean Square Error (MSE); Image Scrambling, Image Encryption & Decryption.

"Analysis of Encryption and Decryption of Image using Canonical Transforms & Scrambling Technique", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.6, Issue 5, page no.273-280, May-2019, Available :http://www.jetir.org/papers/JETIR1905842.pdf

"Analysis of Encryption and Decryption of Image using Canonical Transforms & Scrambling Technique", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.6, Issue 5, page no. pp273-280, May-2019, Available at : http://www.jetir.org/papers/JETIR1905842.pdf