Dey, Somdip ORCID: https://orcid.org/0000-0001-6161-4637 (2012) SD-EI: A cryptographic technique to encrypt images. In: Proceedings Title: 2012 International Conference on Cyber Security, Cyber Warfare and Digital Forensic (CyberSec). IEEE

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Abstract

In this paper, the author propose a method, SD-EI, for image encryption, which basically has two stages: 1) In first stage, each pixel of image is converted to its equivalent eight bit binary number and in that eight bit number, the number of bits, which are equal to the length of password are rotated and then reversed; 2) In second stage, extended hill cipher technique is applied by using involutory matrix, which is generated by same password used in second stage of encryption to make it more secure. The technique presented in this paper is very good for encrypting any type of images, and from the encrypted image it is very difficult to extract the real image without proper authorization and algorithm implementation. The proposed approach is implemented for different images and the results were very satisfactory. The proposed technique, SD-EI, can be implemented by any person or organization to encrypt images, which are to be kept secret, or can encrypt the images, where data (messages) are already hidden using steganography.

Item Type:	Book Section
Status:	Published
DOI:	10.1109/cybersec.2012.6246123
School/Department:	School of Science, Technology and Health
URI:	https://ray.yorksj.ac.uk/id/eprint/8637

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