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Image encryption method

An encryption method and image technology, applied in image data processing, image data processing, instruments, etc., can solve the problems of slow image encryption speed and low efficiency, and achieve low possibility of information leakage, small time complexity, and resistance to statistics The effect of strong attack and differential attack capabilities

Inactive Publication Date: 2018-06-05
HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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Problems solved by technology

The mainstream encryption algorithm is slow and inefficient for image encryption with a large amount of data, and is not suitable for real-time encryption

Method used

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  • Image encryption method
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Embodiment Construction

[0047] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0048] The present invention proposes an image encryption method based on hyperchaotic mapping and DNA coding (abbreviated as IEHDC). This method combines chaotic mapping and DNA coding, which has higher security than using one of the technologies alone.

[0049] An embodiment of the present invention provides an image encryption method, including: encrypting a plaintext image by combining a chaotic map and a DNA code. refer to figure 1 , the combination of chaos mapping and DNA encoding to encrypt plaintext images includes:

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Abstract

The invention discloses an image encryption method which encrypts a clear text image through combination of chaotic mapping and DNA encoding. The image encryption method comprises the following steps:generating an initial key; generating a chaotic sequence and a scrambling vector by use of the initial key; performing scrambling encryption on the clear text image by use of the scrambling vector toobtain a scrambling image; performing DNA encoding on the chaotic sequence to obtain a first DNA sequence, and performing DNA encoding on the scrambling image to obtain a second DNA sequence; performing diffusion encryption on the DNA sequence by use of the first DNA sequence to obtain a third DNA sequence; and performing DNA decoding on the third DNA sequence to obtain a cipher text image.

Description

technical field [0001] This application relates to image encryption processing technology. Background technique [0002] In modern life, with the rapid development of the Internet, people can publish information through the Internet all the time. Although it brings great convenience to our life, we are also facing the situation of a large amount of data being leaked and tampered with. Especially the use and dissemination of a large amount of image information has caused more and more people to pay attention to its information security. In scenarios such as military operations, e-commerce, medical systems, and real-time monitoring, all rely on secure image encryption technology. Therefore, how to ensure the security of image information has become an important issue of public concern. [0003] In cryptography, there is no algorithm for encrypting the special data type of digital image. The encryption algorithm is to encrypt plaintext data into ciphertext data, so that atta...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T1/00
CPCG06T1/0021G06T2201/0053
Inventor 陈建铭吴祖扬范晓宁王景行
Owner HARBIN INST OF TECH SHENZHEN GRADUATE SCHOOL
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