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Chaos-based multi-audio high-dimensional encryption method

An encryption method and multi-tone technology, which is applied in the direction of secure communication through chaotic signals, digital transmission systems, electrical components, etc., can solve the problem of weak security of single-tone encryption method

Active Publication Date: 2020-09-18
CHINA UNIV OF MINING & TECH
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Problems solved by technology

[0004] Purpose of the present invention: Aiming at the problem of weak security of the existing single audio encryption method, a multi-audio encryption method based on chaos is proposed

Method used

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  • Chaos-based multi-audio high-dimensional encryption method
  • Chaos-based multi-audio high-dimensional encryption method
  • Chaos-based multi-audio high-dimensional encryption method

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Embodiment Construction

[0034] The implementation process of the present invention will be further described in detail below in conjunction with specific drawings and examples.

[0035] figure 1 is the encryption flowchart of this method.

[0036] The programming software used is Matlab R2017b, and five audio files with a size of 40000×1 are selected as the original audio. Using this method, the detailed process of encrypting the original image is described as follows.

[0037] Step 1: Open 5 audio files A 1 , A 2 , …, A 5 ; Its time-domain waveform is as figure 2 As shown, the step 1 is integerized to get B 1 , B 2 , …, B 5 .

[0038] Step 2: chaotic sequence generation: take the initial value of the key, x 0 =0.85678246971354, y 0 =0.74158763482146, z 0 =0.45213648764128, w 0 =0.368421795243678, p 1 =0.3642871348521, p 2 =0.25136478213497, p 3 =0.35964785134952, p 4 =0.40258126971254, the chaotic sequence is generated by the PLWCM segmentation mapping system of formula (2...

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Abstract

The invention discloses a chaos-based multi-audio high-dimensional encryption method, and belongs to the field of information encryption. At present, activities of audio file transmission and voice communication on a network are increasingly frequent, and in order to protect the security of multiple audio contents, the invention provides a chaos-based multi-audio high-dimensional encryption method. The method comprises the following steps: firstly, splicing a plurality of audios with the same length into a phoneme matrix; secondly, making phonemes in the matrix integers, and converting the phonemes in the matrix into binary numbers; thirdly, scrambling the three-dimensional phoneme matrix through a chaotic sequence; and finally, performing exclusive-OR operation on the scrambled phoneme matrix and the chaotic sequence to realize phoneme diffusion. Experiments show that the method can realize synchronous encryption of a plurality of audio files, and is good in encryption effect, high insecurity and efficient.

Description

technical field [0001] This article involves an audio encryption method, mainly for encrypting multiple audio files. Background technique [0002] In recent years, with the advancement of science and technology, the smart phone industry and the APP application program industry have been greatly developed, followed by the popularity of social networks, and people are increasingly communicating with others through the mobile phone Internet. At the same time, information security issues have gradually attracted people's attention, and the emergence of data leakage, privacy theft and other issues has also forced information encryption security technology to be urgently strengthened. The encryption of audio data is to use the matrix characteristics of digital audio to change the position or value of the phoneme in the spatial domain of the audio according to a certain transformation rule, so as to make the information of the original audio "disorganized". As a new multimedia sec...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04L29/08
CPCH04L9/001H04L67/06H04L2209/60
Inventor 张晓强尹涛李泳锋
Owner CHINA UNIV OF MINING & TECH
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