Image encryption method based on DNA sub-sequence operation

A DNA sequence and encryption method technology, applied in the fields of digital image encryption and DNA computing, can solve the problems of expensive experimental equipment, high experimental sensitivity, and difficult to control biological experimental environment.

Active Publication Date: 2010-05-05
DALIAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
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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 res

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  • Image encryption method based on DNA sub-sequence operation
  • Image encryption method based on DNA sub-sequence operation
  • Image encryption method based on DNA sub-sequence operation

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Experimental program
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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 novel digital image encryption method, which belongs to the field of DNA calculation and image encryption, in particular an image encryption method based on DNA sub-sequence operation. Current encryption systems based on DNA mostly need complex biological operations that are difficult to realize. Compared with traditional encryption methods based on DNA, the method of the invention abandons the complex biological operations, combines the DNA sub-sequence operations including extending, cutting, deleting and transposition and Logistic chaotic mapping to scramble pixel positions and pixel values of images. The experimental results indicate that the method has the advantages of easy realization, good encryption effect for images, large key space and strong sensibility to key and effective resistance to savage attacks 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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IPC IPC(8): G06T9/00G06N3/12
Inventor 张强薛香莲魏小鹏
Owner DALIAN UNIV
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