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Image encryption method based on dna subsequence operation

A technology of DNA sequence and encryption method, which is applied in the field of digital image encryption and DNA calculation, and can solve the problems of difficult control of the biological experiment environment, high experimental sensitivity, and expensive experimental equipment.

Active Publication Date: 2012-02-15
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the existing DNA encryption-based algorithms need to be operated in biological experiments, but the biological experiment environment is difficult to control, the experiment sensitivity is high, and the experimental equipment is expensive. At present, the research based on DNA encryption is still more theoretical than practical.
Recently, some researchers proposed to use pseudo-DNA calculation to realize the encryption process. Their method has better encryption effect, but it can only realize the encryption of characters.

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  • Image encryption method based on dna subsequence operation
  • Image encryption method based on dna subsequence operation
  • Image encryption method based on dna subsequence operation

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Embodiment Construction

[0092] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0093] The image encryption method proposed by the present invention mainly includes three parts: first, generate four groups of DNA sequences S 1 , S 2 , S 3 , S 4 , and divide it into several DNA subsequences; then, through the interaction of Logistic mapping and DNA subsequence operations to scramble the image pixel values ​​and pixel positions; finally, the encrypted image is obtained by performing DNA decoding and bit-plane recombination. The decryption process is the reverse of the encryption process.

[0094] The flow chart of the algorithm is attached figure 1 ,in figure 1 (a) shows a flowchart of the encryption process, figure 1 (b) is a flowchart of the decryption process. The detailed execution process of the encryption and decryption method is as follows:

[0095] Image encryption method based on DNA subsequence operation:

[0096] Input: an 8...

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Abstract

The invention discloses a new digital image encryption method. This method belongs to the field of DNA computing and image encryption. An image encryption algorithm based on DNA subsequence operation is proposed. Most of the existing DNA-based encryption systems are difficult to achieve through complex biological operations. Different from the traditional DNA encryption method, the present invention abandons complex biological operations, and only uses the idea of ​​DNA subsequence operations (extension operation, truncation operation, deletion operation and transposition operation) combined with Logistic chaotic mapping to scramble the pixel position of the image. and pixel values. The experimental results show that the algorithm is easy to implement, has good encryption effect on images, large key space, strong sensitivity to keys, and can effectively resist exhaustive and statistical attacks.

Description

technical field [0001] The invention relates to the fields of DNA calculation and digital image encryption, in particular to a digital image encryption method. Background technique [0002] In today's society, computer networks have changed the way people communicate, and people can conveniently transmit various multimedia information through the network. Due to the openness of the network, people pay more and more attention to the security and confidentiality of multimedia information. Digital image is an important information carrier in multimedia communication, so how to protect image information has become a common concern. [0003] Chaos has become the focus of researchers because of its characteristics of randomness, sensitivity to initial values, and difficulty in predicting. According to the object of scrambling, chaos-based image encryption methods can be divided into two categories: pixel position scrambling and pixel value scrambling. The pixel position scrambl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T9/00G06N3/12
Inventor 张强薛香莲魏小鹏
Owner DALIAN UNIV