A potent approach to enhance security extent of an image during image encryption

Abstract

Encryption is process of converting data into a cipher text in so that only solely licensed parties will have access to it. Image encryption is essentially an important aspect of encryption where 2-D pictorial data is encrypted; hence all the encryption process is performed upon it. In this paper some addition to an antecedent image encryption approach based on SCAN patterns is done in such a simple way that it provides security to great extent. In SCAN methodology the carrier image is generated by employing a distinctive code known as four out of eight-code and addition of carrier image to original image that result into the encrypted image. Rather than encrypting an image in its original pattern, this paper provides another approach within which image is split into totally different elements so that it merged in to a pattern which is solely known to authorized parties and then further encryption and decryption process method is completed. Approach outlined during this paper provides security to bigger extent. All the method of encryption and decryption are enforced in MATLAB and an analysis has been created for various image quality.