Taxonomy of Image Encryption Techniques - A Survey

Image encryption employs complex algorithms to transform digital images into indecipherable formats, safeguarding them from unauthorized access and ensuring sensitive visual data remains secure. It’s crucial in various domains like business, government, healthcare, military, and multimedia systems due to the paramount importance of information security. In today’s context, the primary challenge is preserving data confidentiality and integrity during communication. Unauthorized access to sensitive image data can have severe consequences, and the potential for data interception or theft during transmission is a pressing concern. This paper aims to conduct a thorough survey and categorization of image encryption techniques. It also explores different terminology, commonly used encryption algorithms, and modified methods in the field. The main aim is to identify gaps in existing image encryption techniques, which can pave the way for improved methods of securing digital image data. The paper incorporates both qualitative and quantitative analyses of various encryption algorithms. These vital insights of information security equip researchers and practitioners for creating more robust encryption solutions. These advancements benefit the broader community by safeguarding sensitive data, preserving confidentiality, and maintaining data integrity in our increasingly digitized society.