Image Encryption Method by Using Chaotic Map and DNA Encoding

Abstract

Confidentiality of image files is a daunting task these days for a variety of reasons in diverse sectors namely in medical, defense, academics and many more. A variety of practical techniques are investigated in past years to protect pictures data but, such existing methods have certain limitations in present systems due to technical advancements. Several researchers have looked at a variety of methods as well as strategies for maintaining image secrecy and protecting top secret information against attackers during the transfer of images throughout communications infrastructure. In this article, a novel image encryption algorithm based on chaotic map as well as the DNA encoding jointly utilized for images encryption in a more pragmatic manner as required in modern world to secure confidential data. This method was tested and verified using the MATLAB R2020a version installed in a personal laptop having system specifications of 64-bit operating system, Window 10 and 16 GB RAM (Random Access Memory). For numerous selected images for testing, the outcomes of this proposed method indicate the best NPCR (Number of Pixel Change Rate) as well as UACI (Unified Average Changed Intensity) scores. This algorithm performs with a number of pictures formats and is in high demand in modern world for securing sensitive data or information throughout transmission via communications infrastructure. In future, there is mammoth scope for more investigations in order to find pragmatic solutions as the modern communication systems are changing rapidly worldwide due to the technological advancements.