A new chaotic image encryption algorithm based on dynamic DNA coding and RNA computing

In order to improve the complexity of the chaotic system and ensure the relevant security indicators of the cryptographic algorithm, a new chaotic image encryption algorithm based on dynamic DNA coding and RNA computing is proposed. In this paper, we first construct a four-dimensional hyperchaotic s...

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Bibliographic Details
Published in:The Visual computer Vol. 39; no. 12; pp. 6589 - 6608
Main Authors: Cun, Qiqi, Tong, Xiaojun, Wang, Zhu, Zhang, Miao
Format: Journal Article
Language:English
Published: Berlin/Heidelberg Springer Berlin Heidelberg 01.12.2023
Springer Nature B.V
Subjects:
Algorithms
Amino acids
Artificial Intelligence
Chaos theory
Complexity
Computation
Computer Graphics
Computer Science
Cryptography
Data encryption
Deoxyribonucleic acid
DNA
Encryption
Fractals
Image coding
Image Processing and Computer Vision
Indicators
Original Article
Pseudorandom sequences
Ribonucleic acid
RNA
Security
Amino acid substitution box
DNA encode
RNA coding
Hyperchaotic system
Replacement sequence generator
ISSN:0178-2789, 1432-2315
Online Access:Get full text
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Summary:In order to improve the complexity of the chaotic system and ensure the relevant security indicators of the cryptographic algorithm, a new chaotic image encryption algorithm based on dynamic DNA coding and RNA computing is proposed. In this paper, we first construct a four-dimensional hyperchaotic system with more complex dynamics and then use the plaintext-related keystream generated by the hyperchaotic system to dynamically DNA encode the plaintext image, then perform RNA coding conversion and amino acid substitution box generation, and finally use an improved replacement sequence generator to generate pseudo-random sequences for replacement operations to generate the final ciphertext image. Theoretical analysis and simulation results show that the proposed algorithm has excellent performance in security indicators such as key space, the number of pixels change rate, the number average changing intensity, entropy, clipping attack, noise attack, and chosen plaintext attack. Therefore, the algorithm has higher security.
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ISSN:0178-2789
1432-2315
DOI:10.1007/s00371-022-02750-5