Abstract
This paper proposes a method of encrypting images with password protection for secure sharing based on deoxyribonucleic acid (DNA) sequence operations and the tangent-delay ellipse reflecting the cavity-map system (TD-ERCS). The initial values of the TD-ERCS system are generated from a user’s password, and the TD-ERCS system is used to scramble the pixel locations of the R, G, and B matrices of the original image. Next, three DNA-sequence matrices are generated by encoding the permuted color image such that it can be transformed into three matrices. Then, the TD-ERCS system is employed to generate three chaotic sequences before encoding the DNA into the three matrices. Thereafter, a DNA exclusive OR (XOR) operation is executed between the DNA sequences of the permuted image and the DNA sequences generated by the TD-ERCS system to produce three encrypted scrambled matrices. Finally, the matrices of the DNA sequences are decoded, and the R, G, and B channels are recombined to form an encrypted color image. The results of simulation and security tests reveal that the proposed algorithm offers robust encryption and demonstrates the ability to resist exhaustive, statistical, and differential attacks.
Highlights
With recent developments in technology and Internet-based activities, computer networks have fundamentally transformed human communication
Digital images play a large role in multimedia communication, and it is critical that appropriate mechanisms are in place to protect this information
This paper proposes a new image-encryption approach that employs secure image sharing based on deoxyribonucleic acid (DNA)-sequence operations and tangentdelay ellipse reflecting cavity-map system (TD-ERCS) maps
Summary
With recent developments in technology and Internet-based activities, computer networks have fundamentally transformed human communication. A cryptographic analysis has been introduced in [23] to break a chaotic encryption scheme that employs autoblocking and electrocardiography, which produces a sequence of random numbers using a logistic map and a 2D Arnold map Another chaotic image cryptanalysis scheme based on image entropy has been proposed in [24]; it still retains the insecurity issues of the chaotic image cryptosystem. Hyperchaotic systems within a DNA coding method have proven to be insecure by proposing a chosen plaintext attack method by Feng and He [39] To overcome this problem, this paper proposes a new image-encryption approach that employs secure image sharing based on DNA-sequence operations and tangentdelay ellipse reflecting cavity-map system (TD-ERCS) maps.
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