Abstract
Because a DNA nucleotide sequence has the characteristics of large storage capacity, high parallelism, and low energy consumption, DNA cryptography is favored by information security researchers. Image encryption algorithms based on DNA coding have become a research hotspot in the field of image encryption and security. In this study, based on a comprehensive review of the existing studies and their results, we present new insights into the existing image encryption algorithms based on DNA coding. First, the existing algorithms were summarized and classified into five types, depending on the type of DNA coding: DNA fixed coding, DNA dynamic coding, different types of base complement operation, different DNA sequence algebraic operations, and combinations of multiple DNA operations. Second, we analyzed and studied each classification algorithm using simulation and obtained their advantages and disadvantages. Third, the DNA coding mechanisms, DNA algebraic operations, and DNA algebraic combination operations were compared and discussed. Then, a new scheme was proposed by combining the optimal coding mechanism with the optimal DNA coding operation. Finally, we revealed the shortcomings of the existing studies and the future direction for improving image encryption methods based on DNA coding.
Highlights
Since Dr Adleman of the United States used DNA molecular biological computing to solve the directed path problem of seven nodes [1] in 1994, DNA computing has attracted the attention of researchers across the world [2,3,4,5]
In DNA computing, DNA nucleotide bases A, C, G, and T coding sequences are used as carriers of information; it has great advantages in dealing with large storage capacity, parallelism, and energy consumption of information [6,7,8,9]
Dagadu [47] proposed a medical image encryption scheme based on multiple chaos and DNA coding, different DNA coding rules, and XOR operation combined with chaotic map to realize image encryption
Summary
Since Dr Adleman of the United States used DNA molecular biological computing to solve the directed path problem of seven nodes [1] in 1994, DNA computing has attracted the attention of researchers across the world [2,3,4,5]. Belazi [45] proposed a novel medical image encryption scheme based on chaos and DNA encoding, and realized two encryption rounds using different coding rules and complement, and XOR operation under chaotic control. This method achieves good encryption, and could resist all types of attacks. Dagadu [47] proposed a medical image encryption scheme based on multiple chaos and DNA coding, different DNA coding rules, and XOR operation combined with chaotic map to realize image encryption. The last section discusses the shortcomings and the future research direction for improving image encryption based on DNA coding
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