A chaos based partial image encryption scheme

Som, Sukalyan; Kotal, Atanu; Mitra, Abhijit; Palit, Sarbani; Chaudhuri, B. B.

doi:10.1109/icbim.2014.6970933

Cited by 21 publications

(9 citation statements)

References 11 publications

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“…is the measurement vector, vec(•) is used to construct the 1D vector, φ ∈ R M 2 ×N 2 represents the measurement matrix. Solar radio spectrogram is used to record the fine structure of solar radio burst and has the characteristics of huge data volume [27][28][29][30]. Therefore, it is necessary to block it and then apply the compressed sensing theory, which is called block compressed sensing.…”

Section: Compressed Sensingmentioning

confidence: 99%

A novel spectrogram visual security encryption algorithm based on block compressed sensing and Five-Dimensional chaotic system

Yan

Shen

Zou

et al. 2022

Preprint

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Based on the block compressed sensing theory (BCS), combined with the five-dimensional chaotic system, we propose and analysis a novel spectrogram visual security encryption algorithm. The research is devoted to solving the compression, encryption and steganography problems of spectrograms with large data volume and high complexity. Firstly, Discrete wavelet transform (DWT) is applied to process the spectrogram to generate the coefficient matrix. Then block compressed sensing is applied to compress and pre-encrypt the spectrogram. Secondly, the study designed a new five-dimensional chaotic system. Then several typical evaluation methods, such as phase diagram, Lyapunov exponent (LE), bifurcation diagram and sample entropy (SE) are applied to deeply analyze the chaotic behavior and dynamic performance of the system. Moreover, the corresponding Simulink model has been built, which proves the realizability of the chaotic system. Importantly, the measurement matrix required for compressed sensing is constructed by the chaotic sequence. Thirdly, performing dynamic Josephus scrambling and annular diffusion on the secret image to get the cipher image. Finally, an improved least significant bit embedding method (LSB) and Alpha channel synchronous embedding are designed to obtain the steganographic image with visual security properties. To make the initial keys of each image is completely different from other images, the required keys are produced using the SHA-256 algorithm. The experimental results confirm that the visual security cryptosystem designed in this study has better compression performance, visual security and reconstruction quality, and are able to effectively defense a variety of conventional attack methods, such as statistical attacks and entropy attacks.

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Section: Compressed Sensingmentioning

confidence: 99%

A novel spectrogram visual security encryption algorithm based on block compressed sensing and Five-Dimensional chaotic system

Yan

Shen

Zou

et al. 2022

Preprint

View full text Add to dashboard Cite

show abstract

“…In Fig. 4 we can see the result and how the diffusion of the encrypted image appear with its histogram equalization, although this doesn't mean we got the required Unless there are analytical approach, the statistical analysis in this work represented by calculating information entropy to ensure the uniformity of pixels distribution, as well as, NPCR to calculate the percentage of different number of pixels, also we have calculated the UACI for average difference of intensity level [16], finally we have analyzed Correlation Coefficient, this is to measure the quality of pixels pair relocation.…”

Section: Encryption Performance Measurementioning

confidence: 99%

Chained QR Keys Generation Based on Chaotic Hybrid Encoding and Fourier Transform Shifting for Image Encryption

Jumiawi

Mohammed

2020

International Journal of Simulation Systems Science &Amp; Technology

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Image encryption has unique characteristics that differs from other data, with pixels representation having undergone many encryption techniques, such as data embedding, AES, chaotic transpositions, DES etc. Some of these techniques are not really practical for the modern security application, although other techniques proposed against reversible attack, by combining both Chaotic Steganography and Cryptography together, in order to increase encryption strength. In this proposal work, we used structural and non-linear technique, using pre-defined encoding system and FFT shifting, to produce QRs keys for both encryption and decryption processes, the initial keys are present, but not dependent as secrets keys, they are encoded dynamically each time, to generate vector of Bar Codes, then reshaped to QR codes thru generation phases. We calculated the information entropy that reached up to 7.995 for the encrypted image, and NPCR is 99.62%, as well as, the average changing intensity UACI up to 33.95% for some results on our samples. These results are compared with some previous methods and it came with good ranking.

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“…where 5-D multi-wing hyper chaotic system enabled to generate key stream and pseudo random numbers.Chaos based expand and shrink techniques [2] applied for image encryption to increase the security. Multiple times of chaos based permutation technique applied to reduce the correlation among the pixels and substitution increases the entropy of encrypted image.Sukalyan Som etc.al [3] presents an chaos based partial image encryption scheme. Plain image decomposed to bit planes.…”

Section: Introductionmentioning

confidence: 99%

A Novel Partial Thermal Image Encryption Scheme Based on Multiple Chaotic Systems

Lokesh

Manjunatha²

2018

IJET

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In this paper, proposed an novel partial encryption scheme for protecting thermal images during transmission. The adopted technique having pixel level and bit level permutation process. To reduce time and computational complexity, an partial encryption technique is adopted. Arnold cat map technique involved in the pixel level permutation process to decrease correlation of original image. The proposed scheme selects only higher four binary planes for the bit level shuffling process. Where this process consists of row and column wise circular shift operation with the help of pseudo random numbers generated from chaotic map system. Mixing of binary planes of the thermal image will leads to prevent the differential attacks. Experimental results shows that proposed scheme exhibits good performance in terms entropy, NPCR and the speed of system.

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A chaos based partial image encryption scheme

Cited by 21 publications

References 11 publications

A novel spectrogram visual security encryption algorithm based on block compressed sensing and Five-Dimensional chaotic system

A novel spectrogram visual security encryption algorithm based on block compressed sensing and Five-Dimensional chaotic system

Chained QR Keys Generation Based on Chaotic Hybrid Encoding and Fourier Transform Shifting for Image Encryption

A Novel Partial Thermal Image Encryption Scheme Based on Multiple Chaotic Systems

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