An efficient and secure partial image encryption for wireless multimedia sensor networks using discrete wavelet transform, chaotic maps and substitution box
Journal Article
Khan, M. A., Ahmad, J., Javaid, Q., & Saqib, N. A. (2017)
An efficient and secure partial image encryption for wireless multimedia sensor networks using discrete wavelet transform, chaotic maps and substitution box. Journal of Modern Optics, 64(5), 531-540. https://doi.org/10.1080/09500340.2016.1246680
Wireless Sensor Networks (WSN) is widely deployed in monitoring of some physical activity and/or environmental conditions. Data gathered from WSN is transmitted via network to...
TD-ERCS map-based confusion and diffusion of autocorrelated data
Journal Article
Khan, J. S., Ahmad, J., & Khan, M. A. (2017)
TD-ERCS map-based confusion and diffusion of autocorrelated data. Nonlinear Dynamics, 87(1), 93-107. https://doi.org/10.1007/s11071-016-3028-2
In this article, we proposed a new scheme to encrypt highly autocorrelated image pixel data. In existing literature, single substitution was used to break autocorrelation in i...
A compression sensing and noise-tolerant image encryption scheme based on chaotic maps and orthogonal matrices
Journal Article
Ahmad, J., Khan, M. A., Hwang, S. O., & Khan, J. S. (2016)
A compression sensing and noise-tolerant image encryption scheme based on chaotic maps and orthogonal matrices. Neural Computing and Applications, 28(S1), 953-967. https://doi.org/10.1007/s00521-016-2405-6
With the evolution of technologies, the size of an image data has been significantly increased. However, traditional image encryption schemes cannot handle the emerging proble...
A New Image Encryption Scheme Based on Dynamic S-Boxes and Chaotic Maps
Journal Article
Rehman, A. U., Khan, J. S., Ahmad, J., & Hwang, S. O. (2016)
A New Image Encryption Scheme Based on Dynamic S-Boxes and Chaotic Maps. 3D research, 7(1), https://doi.org/10.1007/s13319-016-0084-9
Substitution box is a unique and nonlinear core component of block ciphers. A better designing technique of substitution box can boost up the quality of ciphertexts. In this p...
A secure image encryption scheme based on chaotic maps and affine transformation
Journal Article
Ahmad, J., & Hwang, S. O. (2016)
A secure image encryption scheme based on chaotic maps and affine transformation. Multimedia Tools and Applications, 75(21), 13951-13976. https://doi.org/10.1007/s11042-015-2973-y
Due to the interesting nonlinear dynamic properties of chaotic maps, recently chaos-based encryption algorithms have gained much attention in cryptographic communities. Howeve...
Chaos-based diffusion for highly autocorrelated data in encryption algorithms
Journal Article
Ahmad, J., & Hwang, S. O. (2015)
Chaos-based diffusion for highly autocorrelated data in encryption algorithms. Nonlinear Dynamics, 82(4), 1839-1850. https://doi.org/10.1007/s11071-015-2281-0
In a single substitution box, the same regions (pixels) of an image are encrypted to one unique symbol. To reduce this type of autocorrelation in data, chaos has been extensiv...
An Experimental Comparison of Chaotic and Non-chaotic Image Encryption Schemes
Journal Article
Ahmad, J., Hwang, S. O., & Ali, A. (2015)
An Experimental Comparison of Chaotic and Non-chaotic Image Encryption Schemes. Wireless Personal Communications, 84(2), 901-918. https://doi.org/10.1007/s11277-015-2667-9
During last few years, transmission of digital multimedia data (images, audios and videos) over Internet, wireless cell phones, television broadcasting etc., has been signific...