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An encryption method for converting Chinese characters to pictures

An encryption method and Chinese character technology, applied in digital data protection, electronic digital data processing, instruments, etc., can solve the problems of large amount of information, few encryption algorithms of Chinese characters, poor readability and reproducibility of ciphertext, etc., to achieve guaranteed Security and Feasibility, Resistance to Known/Chosen-Plaintext Attacks, Effect of Good Known/Chosen-Plaintext Attacks

Active Publication Date: 2021-12-14
NANTONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, most mainstream information encryption and decryption technologies mainly focus on information composed of single-byte characters such as letters, numbers, and English punctuation marks. There are few existing encryption algorithms for Chinese characters, mainly based on simple inversion, Area code position exchange, XOR, and more complex operations such as chaotic encryption
With the existing Chinese character encryption algorithm, the readability and reproducibility of most of the ciphertexts obtained are too poor. At the same time, because the picture can contain a large amount of information, encrypting Chinese characters into pictures is a better way to carry ciphertext

Method used

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  • An encryption method for converting Chinese characters to pictures
  • An encryption method for converting Chinese characters to pictures
  • An encryption method for converting Chinese characters to pictures

Examples

Experimental program
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Effect test

Embodiment 1

[0068] According to the encryption method of a kind of Chinese character conversion picture in the above-mentioned specific embodiment, the steps are as follows:

[0069](1) Taking a certain Chinese character as "a kind of encryption method for converting Chinese characters to pictures is a relatively simple and feasible method. Pictures refer to flat media composed of graphics, images, etc. There are many formats of pictures, but generally they can be It is divided into two categories: bitmap and vector diagram. The characteristic of chaos is that the orderly motion form that originally followed simple physical laws suddenly deviates from the expected regularity under certain conditions and becomes a disordered form. Chaos refers to Deterministic dynamical system is unpredictable and similar to random motion due to its sensitivity to the initial value. It is also called chaos. The English word comes from Greek, and the original meaning is the scene before the beginning of the ...

Embodiment 2

[0085] According to the above-mentioned encryption method for converting Chinese characters to pictures, a certain section of Chinese characters to be encrypted is still: "A kind of encryption method for converting Chinese characters to pictures is a relatively simple and feasible method. A picture refers to a structure composed of graphics, images, etc. Print media. There are many formats of pictures, but generally they can be divided into two categories: dot matrix and vector graphics. The characteristic of chaos is the orderly movement form that originally follows simple physical laws, and suddenly deviates from the expected regularity under certain conditions Instead, it becomes a disordered form. Chaos refers to the unpredictable, random-like motion of a deterministic dynamical system due to its sensitivity to the initial value. It is also called chaos. The English word comes from Greek, and its original meaning It is the scene before the beginning of the universe, and its...

Embodiment 3

[0091] According to the above-mentioned encryption method for converting Chinese characters into pictures, the encryption steps are similar to those in Embodiment 1, only a certain section of Chinese characters to be encrypted undergoes a slight change: the first Chinese character "one" becomes "two"; or the 27th Chinese character "." becomes "!"; or the 55th Chinese character "But" becomes "Dan"; or the 100th Chinese character "Zhong" becomes "Zhong"; or the 151st Chinese character "De" becomes "地" ; or the 199th Chinese character "random" becomes "enemy"; or the 230th Chinese character "attachment" becomes "fu"; or the 270th Chinese character "heavy" becomes "child"; or the 302nd Chinese character ". " into "combined", and the encryption results of converting Chinese characters to pictures are shown in Table 2. It can be seen from Table 2 that a slight change in a certain Chinese character to be encrypted will cause the encrypted color picture to be "unrecognizable", so it c...

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Abstract

The invention discloses an encryption method for converting Chinese characters into pictures, which includes: first converting a certain segment of Chinese characters into numerical data one by one to obtain a high-digit numerical sequence and a low-digit numerical sequence; then, according to an external encryption key and a certain segment of Chinese characters to be encrypted, Use the chaotic system to generate a chaotic sequence, and scramble the high-order and low-order numerical sequences according to the descending and ascending scrambling rules of the chaotic sequence; The conversion rules for converting a binary sequence into a numerical sequence and the user-defined R, G, and B matrix data filling rules, fill the elements in the transformed numerical sequence into the R, G, and B matrices respectively, thereby generating a color picture , and then convert the color picture into a QR code. The method provided by the invention has good performance of resisting known / chosen plaintext attacks, and ensures the safety and feasibility of the encryption method for converting Chinese characters into pictures.

Description

technical field [0001] The invention relates to the field of data encryption, in particular to an encryption method for converting Chinese characters into pictures. Background technique [0002] With the rapid development of modern network technology, computer network has become a means of information exchange in many fields. Since the computer network is an open network, information exchange often faces security issues such as information theft, tampering and forgery. At this time, the research and application of information encryption technology is imperative. [0003] At present, most mainstream information encryption and decryption technologies mainly focus on information composed of single-byte characters such as letters, numbers, and English punctuation marks. There are few existing encryption algorithms for Chinese characters, mainly based on simple inversion, Area code position exchange, XOR, and more complex operations such as chaotic encryption. With the existing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F21/60G06F40/126
CPCG06F21/602
Inventor 盛苏英苏文博曹倩瑜黄文欢张小美陆平卢成任洁
Owner NANTONG UNIVERSITY