Modified Transposition Cipher Algorithm for Images Encryption

Abstract

Digital images stored in computers or owned smartphones are particularly vulnerable to the danger of theft. Not all digital images can be freely shared to others. If personalized digital images fall into the hands of others then their potential will increase to abuse. There have been many cases where images were spread without permission, thus harming certain parties. Therefore, a method that can be used to secure digital images from the dangers of abuse is required. Cryptographic methods for example have been commonly used to secure various types of digital data. One of the known cryptographic methods is the Transposition Cipher. This method can transpose the content of digital data in text form. So that the original text will be scrambled and no longer meaningful to the reader. This method can be modified in order to encrypt digital images. The result is a scrambled image content that is safe from abuse when the image is stolen.