Novel method for image security system based on improved SCAN method and pixel rotation technique
Autor: | Mohd Shafry Mohd Rahim, Ali Shakir Mahmood |
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Rok vydání: | 2018 |
Předmět: |
Computer Networks and Communications
Computer science ComputingMethodologies_IMAGEPROCESSINGANDCOMPUTERVISION Cryptography 02 engineering and technology Encryption 01 natural sciences Scrambling Attack model Robustness (computer science) Computer Science::Multimedia 0103 physical sciences 0202 electrical engineering electronic engineering information engineering Computer vision Safety Risk Reliability and Quality 010301 acoustics Image resolution Computer Science::Cryptography and Security Pixel business.industry 020207 software engineering Computer Science::Computer Vision and Pattern Recognition Confusion and diffusion Artificial intelligence business Software |
Zdroj: | Journal of Information Security and Applications. 42:57-70 |
ISSN: | 2214-2126 |
Popis: | Image scrambling is the conversion of images to unreadable format for security reasons. Encrypting an image with an acceptable level of security requires a cryptography system that follows the rules of confusion and diffusion. This paper introduces the SCAN method for scrambling and pixel rotation for diffusion. This image encryption method uses a knight tour to generate a scrambling key that is equal to the image size. The main advantage of this generator is that only a small initial value is needed to generate a full image size key. To realize confusion, a plain image is applied with an improved discrete diagonal SCAN (D-SCAN) method to generate a scrambled image for confusion. Then, to achieve diffusion, pixel values are changed by rotating all image pixels according to the generated keys. Results of statistical and security tests indicate that the proposed systems of D-SCAN and pixel rotation scheme can achieve excellent scrambling effect, high security, strong robustness against several attack types, and high sensitivity. |
Databáze: | OpenAIRE |
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