Image Encryption using Jumbling-Salting Algorithm

Abstract

With the advent of digital world today, securing images across internet has become an important issue. There exist many image security techniques viz. steganography, encryption, watermarking etc. Image Encryption is one of such fruitful technique which encrypts an image using random secret key and stores the encrypted image on the server. There are many challenges of implementing image encryption algorithms such as higher computational complexity, loss of information during encryption, universality and applicability of algorithm, less scalability etc. Many image encryption algorithms are selective image encryption algorithm which works for specific part of image. It consists of encrypting only a subset of the data. The aim of selective encryption is to reduce the amount of data to encrypt while preserving a sufficient level of security. The selective encryption algorithms have a problem of scalability and data loss. The paper proposes a new algorithm Jumbling-Salting for images. The algorithm was earlier used in encryption passwords, text files, DNS, payment gateway data etc. An application is developed which incorporates the Jumbling salting encryption stategy for images.