Novel medical image encryption using DWT block-based scrambling and edge maps

Jeevitha, S.; Prabha, N. Amutha

doi:10.1007/s12652-020-02399-9

Cited by 40 publications

(16 citation statements)

References 20 publications

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“…Jeevitha and Prabha 8 propounded a medical image encryption cryptosystem. First, discrete wavelet transform was applied to transform the medical image into some planes.…”

Section: Previous Workmentioning

confidence: 99%

Improved chaos‐RSA‐based hybrid cryptosystem for image encryption and authentication

Gafsi

Amdouni

Hajjaji

et al. 2022

Concurrency and Computation

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This article puts forward a fast chaos-RSA-based hybrid cryptosystem to secure and authenticate secret images. The SHA-512 is used to generate a 512-bit initial key.The RSA system is used to encrypt the initial secret key and signature generation for both the sender and image authentication. In fact, a powerful block-cipher algorithm is developed to encrypt and decrypt images with a high level of security. At this stage, a strong PRNG based on four chaotic systems is propounded to generate high-quality keys. Therefore, an improved architecture is suggested. It performs confusion and diffusion of images with low computational complexity. In the final step, the encrypted secret key, signature, and encrypted image are combined together in order to obtain an encrypted signed image. The block-cipher algorithm is evaluated in-depth for several ordinary and medical images with different types, content, and size. The obtained simulation results demonstrate that the system enables high-level security. The entropy has achieved a value of 7.9998 which is the most important feature of randomness. A comparative study against numerous recent encryption algorithms demonstrates that the proposed algorithm provides good results.

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“…Jeevitha and Prabha 8 propounded a medical image encryption cryptosystem. First, discrete wavelet transform was applied to transform the medical image into some planes.…”

Section: Previous Workmentioning

confidence: 99%

Improved chaos‐RSA‐based hybrid cryptosystem for image encryption and authentication

Gafsi

Amdouni

Hajjaji

et al. 2022

Concurrency and Computation

View full text Add to dashboard Cite

show abstract

“…The algorithm improves the key sensitivity and has a large key space and uniform pixel distribution, and the encryption speed is within the acceptable range to ensure high security. Image scrambling has a limited number of transformations of the matrix of the image, which is periodic and reverts to the original image after several transformations [10]. The mathematical description corresponding to chaotic systems has no analytic solution, which means that the end position cannot be calculated directly by inputting initial values and time but can only be approximated continuously by iteration, but the approximation is never exact.…”

Section: Current Status Of Researchmentioning

confidence: 99%

Image Processing Method Based on Chaotic Encryption and Wavelet Transform for Planar Design

Liu

2021

Advances in Mathematical Physics

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This paper provides an in-depth study and analysis of image processing for graphic design through chaotic encryption combined with a wavelet transform algorithm. Firstly, the traditional Mallat algorithm is optimized; since the mean value of the transform coefficients generated after the wavelet transform of the image is used as the initial value of the chaotic system to iterate, when the image is modified, then the mean value of the wavelet coefficients will also change, and the final iteration comes out as two different sequences using the property that the chaotic system is extremely sensitive to the initial conditions, so the algorithm has a certain sensitivity to tampering and localization effect. The image of the encrypted graphic design is decrypted by the chaos decryption system, and the final image information of the graphic design is obtained. In terms of the security of the graphic design image itself, the complex dynamical properties of chaos are fully utilized to encrypt it, and the algorithm has a good encryption effect after statistical characteristic analysis, attack complexity, difference analysis, adjacent pixel correlation analysis, and key sensitivity analysis. The plaintext image is decomposed in odd-even sequence using the boosting algorithm to get the sequence with an even index and the sequence with an odd index; then, the diffusion algorithm is applied to the two sequences by the prediction and update algorithm, and this process is repeated many times to get the two ciphertext sequences after scrambling, merging these two sequences, and matrixing them to get the ciphertext image. Finally, the testing of the embedded planar designed image revolves around four aspects, namely, image processing, tamper sensitivity, robustness, and imperceptibility, to examine the designed planar designed image system. In the diffusion manipulation, the key matrix for diffusion is obtained using the threshold processing method of the Local Binary Pattern (LBP) algorithm for the matrices generated by the Logistic Chaos system, which improves the randomness of the algorithm. The experimental results verify the effectiveness and security of the algorithm.

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“…In [10], medical images were protected using cosine number transform. In [11], edge maps and DWT were used to encrypt the medical images. In [12,13], integer wavelet transform (IWT), DNA, and 3D Lorenz chaotic map were utilized to secure the medical images over public networks.…”

Section: Introductionmentioning

confidence: 99%

Securing E-Healthcare Images Using an Efficient Image Encryption Model

Jain

2022

Scientific Programming

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With the advancements in e-healthcare services, it is possible to provide remote medical services to patients and swifter first aid. Medical images play an essential role in e-healthcare applications for providing quick and better remote diagnosis and treatment to patients. Medical images generally comprise secret details about the patients and are therefore prone to various security threats during their transmission over public networks. Thus, it is required to secure these images prior to their communication over public networks. But due to distinctive properties of medical images, like higher correlation and redundancy among the pixels, and larger size, it is required to design an efficient encryption model to resist against various security threats. In this paper, an efficient encryption model for medical images is proposed. To obtain the secret keys, six-dimensional hyperchaotic map (SDHM) is proposed. Firstly, plain medical image is divided into three channels such as red, green, and blue. Secret keys are used to diffuse these channels. Lastly, encrypted channels are concatenated and final encrypted medical image is obtained. Extensive experiments are drawn by considering the benchmark medical images. Also, comparisons are performed among the proposed SDHM and competitive techniques by considering various performance metrics. Comparative analysis reveals that the proposed SDHM achieves remarkably good performance than the existing encryption models.

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Novel medical image encryption using DWT block-based scrambling and edge maps

Cited by 40 publications

References 20 publications

Improved chaos‐RSA‐based hybrid cryptosystem for image encryption and authentication

Improved chaos‐RSA‐based hybrid cryptosystem for image encryption and authentication

Image Processing Method Based on Chaotic Encryption and Wavelet Transform for Planar Design

Securing E-Healthcare Images Using an Efficient Image Encryption Model

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