Brief review on application of nonlinear dynamics in image encryption

Özkaynak, Fatih

doi:10.1007/s11071-018-4056-x

Cited by 226 publications

(147 citation statements)

References 75 publications

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“…A large secret key space of a cryptosystem is necessary to resist the brute-force attack and it is considered to be secure if the key space is equal or greater to 2 128 [17].…”

Section: Key Space Analysismentioning

confidence: 99%

Efficient Pseudo-chaotic Number Generator for Cryptographic Applications

Qiao¹,

Taralova²,

Assad³

2020

IJICR

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A secure and efficient pseudo-random number generator is crucial for the security of a stream cipher or block cipher in a cryptosystem. This paper is devoted to the design and analysis of a new robust Pseudo-Chaotic Number Generator (PCNG) based on discrete chaotic maps over a finite field, and a multiplexing mechanism. The proposed PCNG contains three discrete chaotic maps: Piece-Wise Linear Chaotic Map (PWLCM), skew tent and logistic map. XOR operators are applied on these maps to form three optional intermediate outputs that are selected by the multiplexing mechanism to produce the final pseudo-chaotic sequence. The XOR operators and multiplexing mechanism can increase the dynamic pseudo-chaotic properties significantly. The PCNG is designed over a finite 2 32 field, has a simple structure and can be easily implemented. It has been implemented on a new stream cipher. Security analyses and statistical experiments have been carried out and the results have proven that the proposed PCNG can generate effective pseudorandom numbers and the stream cipher exhibits good security properties with large secret key space and high key sensitivity. Therefore, the proposed PCNG can be successfully applied in cryptosystems.

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“…A large secret key space of a cryptosystem is necessary to resist the brute-force attack and it is considered to be secure if the key space is equal or greater to 2 128 [17].…”

Section: Key Space Analysismentioning

confidence: 99%

Efficient Pseudo-chaotic Number Generator for Cryptographic Applications

Qiao¹,

Taralova²,

Assad³

2020

IJICR

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“…Some concrete steps for evaluating security performances of a chaotic image encryption schemes were given in [25]. Unfortunately, IEAIE did not follow the lessons summarized in [18], [24], [25]. To attract the attention of designers of image encryption schemes on cryptanalysis, we check the security of every aspect of IEAIE and its test given in [27] as follows.…”

Section: A Some Security Defects Of Ieaiementioning

confidence: 99%

Cryptanalysis of a Chaotic Image Encryption Algorithm Based on Information Entropy

et al. 2018

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Recently, a chaotic image encryption algorithm based on information entropy (IEAIE) was proposed. This paper scrutinizes the security properties of the algorithm and evaluates the validity of the used quantifiable security metrics. When the round number is only one, the equivalent secret key of every basic operation of IEAIE can be recovered with a differential attack separately. Some common insecurity problems in the field of chaotic image encryption are found in IEAIE, e.g. the short orbits of the digital chaotic system and the invalid sensitivity mechanism built on information entropy of the plain image. Even worse, each security metric is questionable, which undermines the security credibility of IEAIE. Hence, IEAIE can only serve as a counterexample for illustrating common pitfalls in designing secure communication method for image data.

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“…Among the image encryption algorithms, chaos-based ones have become more and more popular in recent years because chaotic systems have some special properties for image encryption, such as pseudorandomness, ergodicity, unpredictability, and extreme sensitivity to system parameters and initial values [3][4][5][6][7]. Generally speaking, there are two ways to perform image encryption, i.e., permutation and diffusion.…”

Section: Introductionmentioning

confidence: 99%

Image Encryption Based on Dynamic Filtering and Bit Cuboid Operations

Xie

et al. 2019

Complexity

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As one of the most widely used media types, images play an important role in the era of the Internet. And hence how to enhance the security of images has become a hot topic in the field of information security. However, due to some intrinsic characteristics of images, image security is still a challenging task. For the purpose of coping with this issue, in this paper, we propose a novel algorithm that combines a hyperchaotic system, dynamic filtering, and bit cuboid operations, namely, DFBC, for image encryption. Specifically, the proposed DFBC consists of four steps: firstly, a 7D Lorenz hyperchaotic system is utilized to generate a pseudorandom sequence; secondly, variable 1D filters are derived from the pseudorandom sequence, and dynamic filtering is conducted on each pixel of an image; thirdly, a diffusion scheme is performed and then the image is transformed to a bit cuboid; and, finally, various types of permutation (rearranging, symmetry, rotation, zigzag, and global bit permutation) are performed on the bit cuboid. The experiments on several testing images demonstrate that the DFBC achieves state-of-the-art results in terms of several evaluation criteria, showing that the DFBC is promising for image encryption.

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Brief review on application of nonlinear dynamics in image encryption

Cited by 226 publications

References 75 publications

Efficient Pseudo-chaotic Number Generator for Cryptographic Applications

Efficient Pseudo-chaotic Number Generator for Cryptographic Applications

Cryptanalysis of a Chaotic Image Encryption Algorithm Based on Information Entropy

Image Encryption Based on Dynamic Filtering and Bit Cuboid Operations

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