Sparse Compression-Based Image Encryption using Data Encryption Standards RC5

Abstract

In this work, we have used the standard symmetric key block cipher data encryption algorithm RC5(32,16,8) for the encryption of digital greyscale images. For this, we have only considered the nonzero elements of the sparse matrix of the images which have been generated using the sparse representation technique. The security strength of the proposed technique is verified through different quality parameters, e.g. information entropy, correlation coefficients, NPCR, UACI, and NIST test. Our proposed algorithm achieved the maximum information entropy value of 7.9977 for the cameraman image and nearly zero correlation coefficient values establish the robustness of the cryptosystem. The highest NPCR and UACI values obtained in our work are 99.6916 and 33.9605, which are closer to the maximum theoretical values. The proposed technique is also compared with some of the contemporary works to validate the credibility of our proposed algorithm.

KEYWORDS:

• Sparse representation
• Data compression
• Dictionary learning
• RC5 encryption
• Symmetric block Cipher

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Notes on contributors

Arghya Pathak

Arghya Pathak received his BSc degree in physics from J K College Purulia (University of Burdwan), India in 2012 and MSc degree from National Institute of Technology Durgapur, India in 2014. Presently, he is pursuing his doctoral research work. His research interests include image processing, sparse representation of signals, data security and cryptography. He has published one paper in international journals. Email: [email protected]

Hrishikesh Mondal

Hrishikesh Mondal received the BSc and MSc degrees from the University of Burdwan, Burdwan, West Bengal, India in 1998 and 2000, respectively. Presently working as an assistant professor of physics in Durgapur Government College and completed PhD from NIT, Durgapur (in 2022) West Bengal, India. He has published three research papers in national and international journals. Email: [email protected]

Jayashree Karmakar

Jayashree Karmakar received her BSc degree in physics from the University of Burdwan, India in 2014 and MSc degree from National Institute of Technology Durgapur, India in 2016. She has completed her PhD degree from NIT Durgapur in the year 2021. Presently, she is pursuing her post-doctoral research work at MUSE Lab IIT, Gandhinagar. Her research interests include image processing, sparse representation of signals, data compression and security. She has published four papers in International Journals. Email: [email protected]

Subhashish Pal

Subhashish Pal received the BSc and MSc degrees from the CCS University, Meerut, Uttar Pradesh, India in 2000 and 2002, respectively. Presently, working as an assistant professor of physics in Dr B C Roy Engineering College (BCREC), Durgapur, West Bengal, India and pursuing PhD from NIT, Durgapur, West Bengal, India. His area of interest is image processing, data security and cryptography. Email: [email protected]; [email protected]

Debasish Nandi

Debashis Nandi received the BE degree in electronics and communication engineering from R E College, Durgapur (University of Burdwan), India, in 1994 and MTech degree from Burdwan University in microwave engineering in 1997. He received his PhD degree from IIT, Kharagpur, India in medical imaging technology in 2012. His area of research includes computer security and cryptography, secure chaotic communication, video coding, image processing, deep learning, etc. He has published more than 39 research papers in national and international journals and one patent. He is a professor in the Department of Computer Science and Engineering, National Institute of Technology, Durgapur, India. Email: [email protected]; [email protected]

Mrinal Kanti Mandal

Mrinal Kanti Mandal received the BSc degree in physics (hons) from Burdwan University, India in 1998, and the MSc and PhD degrees from the same University in 2000 and 2008, respectively. Presently, he is an associate professor in the Department of Physics, National Institute of Technology, Durgapur. He has published more than 60 international journal papers and 50 conference papers in proceedings. His research interests include design of electronic circuits & systems, nonlinear dynamics & chaos, cryptography and image processing. He is a reviewer of Nonlinear Dynamics, Security and Communication Networks, International Journal of Electronics, Indian Journal of Pure and Applied Physics, Indian Journal of Physics, etc. He is a life member of IEEE, IETE, IPS and IAPT. His bio-data has been included in the database of science and technology chapter of ‘MarquisWho'sWho’ since 2010 edition.