Symmetric key image encryption using chaotic Rossler system
Article first published online: 10 DEC 2013
Copyright © 2013 John Wiley & Sons, Ltd.
Security and Communication Networks
How to Cite
Mandal, M. K., Kar, M., Singh, S. K. and Barnwal, V. K. (2013), Symmetric key image encryption using chaotic Rossler system. Security Comm. Networks. doi: 10.1002/sec.927
- Article first published online: 10 DEC 2013
- Manuscript Accepted: 12 OCT 2013
- Manuscript Revised: 24 AUG 2013
- Manuscript Received: 10 JAN 2013
- image encryption;
- pixel shuffling;
In this article, an algorithm for encryption of digital image based on chaos theory is proposed. This encryption algorithm includes two main operations of image element shuffling and pixel replacement. The analysis of cryptographic strength (resistance attack) has been performed to confirm the fact. The results of several experimental tests, such as key space analysis, key sensitivity analysis, and statistical analysis, show that the proposed algorithm for image cryptosystems provides an efficient and secure way for image encryption and the hacker cannot decrypt an encrypted image without original key. A comparison in terms of correlation between the original and encrypted images, number of pixels change rate, unified average changing intensity, and mean absolute error is performed, which proves that the plain image is very different from the encrypted one. We have also performed fixed point analysis to know how many pixels remain fixed after pixel shuffling operation. Copyright © 2013 John Wiley & Sons, Ltd.