A chaos-based image encryption algorithm with simple logical functions
      
Yazarlar (4)
Erdem Yavuz Istanbul Ticaret Üniversitesi, Türkiye
Rıfat Yazıcı Istanbul Ticaret Üniversitesi, Türkiye
Doç. Dr. Mustafa Cem KASAPBAŞI Istanbul Ticaret Üniversitesi, Türkiye
Ezgi Yamaç
Istanbul Üniversitesi, Türkiye
Makale Türü Özgün Makale (SSCI, AHCI, SCI, SCI-Exp dergilerinde yayınlanan tam makale)
Dergi Adı Computers and Electrical Engineering (Q4)
Dergi ISSN 0045-7906 Wos Dergi Scopus Dergi
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce Basım Tarihi 08-2016
Cilt / Sayı / Sayfa 54 / 1 / 471–483 DOI 10.1016/j.compeleceng.2015.11.008
Makale Linki https://linkinghub.elsevier.com/retrieve/pii/S004579061500364X
Özet
This paper proposes an effective chaos-based encryption algorithm specialised for images. A system of two independent chaotic functions with high sensitivity to initial states, is utilised to sufficiently apply confusion and diffusion principles for images with any entropy. One of the functions is used for shuffling pixel positions while the other for changing the values of pixels. In the resulting new pixel organisation, adjacent pixels with naturally close values will take on considerably different values, making it difficult to crack the encrypted image. To increase resistance of the system to differential attacks, some logical operations such as exclusive-or and circular rotation are used to spread the effect of a slight change in single pixel intensity of plain image over many pixels in cipher-image. A variety of analyses and tests has been carried out to prove the security and the validity of the algorithm. Even with low entropy images the proposed algorithm has been proved to be more secure and faster than the previous algorithms.
Anahtar Kelimeler
Image encryption | Chaos | Low entropy | Security analysis