Chaos based encryption of quantum images
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Chaos based encryption of quantum images Deepak Vagish K 1 & Rajakumaran C 2 & Kavitha R 3 Received: 26 April 2019 / Revised: 31 March 2020 / Accepted: 7 May 2020 # Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract
Content, be it any form text, image or video, which needs to be sent from one place to another is vulnerable to third party attacks if it is sent without proper encryption. Therefore, each encryption should be extremely sensitive to change, that is a small change in the key should drastically change the cipher text. In this paper we propose such an image encryption algorithm which is extremely sensitive to such changes. A novel encryption algorithm for quantum images based on chaotic maps is designed. The image is converted into a scrambled state using quantum circuits using the principle of Quantum Hilbert Image Scrambling algorithm. The scrambled image is encrypted using the quantum XOR gate using the chaotic maps algorithm. Numerical and simulation analyses show that the proposed quantum image encryption approach is robust, realizable, and has high efficiency compared to its classical counterpart. Keywords Quantum image encryption . Quantum Hilbert image scrambling . Chaotic maps
1 Introduction With the rapid growth of multimedia and the means of communicating it from one place to another an ever increasing need for the requirement of an efficient encryption algorithm also arises. Lately image has become one of the most essential and popular element of multimedia. Protection of the *
Deepak Vagish K [email protected] Rajakumaran C [email protected] Kavitha R [email protected]
1
B. Tech ICT, SASTRA Deemed University, Thanjavur, Tamil Nadu, India
2
B. Tech ECE, SASTRA Deemed University, Thanjavur, Tamil Nadu, India
3
Assistant Professor-III, School of Computing SASTRA Deemed University, Thanjavur, Tamil Nadu, India
Multimedia Tools and Applications
essential data in images has become vital where the applications range from military to the corporate world. Encryption of information present in images is required to preserve the privacy of the individual. For the past couple of years there has been several such encryption algorithms proposed. Quantum computation which has been developed using quantum mechanics, is now used in numerous domains to solve various problems efficiently which were traditionally solved by classical computation. This process of solving has been realized by the usage of quantum computers. In quantum computers, images are stored and captured using many representational models [12, 13]. The colour and position of the image can be mapped into one quantum state by flexible representation of quantum image (FRQI) [9]. In the novel enhanced quantum image representation (NEQR) [15] the basis state of a qubit sequence is used to store the grayscale value of every pixel and moreover unlike FRQI, two entangled qubit sequences are used to store the entire image, which represents the pixel and position value of all the pixels. Caraiman a
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