A dual speech encryption algorithm based on improved Henon mapping and hyperchaotic

Qiuyu ZHANG; Yujie SONG

doi:10.11959/j.issn.1000-0801.2021271

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A dual speech encryption algorithm based on improved Henon mapping and hyperchaotic

Research and Development | 更新时间：2024-06-05

- A dual speech encryption algorithm based on improved Henon mapping and hyperchaotic
- Telecommunications Science Vol. 37, Issue 12, Pages: 11-24(2021)
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- DOI：10.11959/j.issn.1000-0801.2021271
  CLC： TP309
- Published Online：2021-12，
  
  Published：20 December 2021
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Qiuyu ZHANG, Yujie SONG. A dual speech encryption algorithm based on improved Henon mapping and hyperchaotic[J]. Telecommunications science, 2021, 37(12): 11-24.
DOI：

Qiuyu ZHANG, Yujie SONG. A dual speech encryption algorithm based on improved Henon mapping and hyperchaotic[J]. Telecommunications science, 2021, 37(12): 11-24. DOI： 10.11959/j.issn.1000-0801.2021271.

摘要

针对现有语音混沌加密算法密钥空间小、安全性差、加密效率低且无法实现密钥复杂度与加密效率的权衡等问题，提出了一种改进Henon映射和超混沌的双重语音加密算法。首先，为了使Henon映射具有更大的混沌空间和更高的混沌复杂度，通过扩展控制参数范围将非线性三角函数作为输入参数变量等手段对经典Henon映射进行了改进；其次，利用改进的Henon映射生成伪随机序列，并对语音数据进行单次不重复置乱加密，获得语音数据的初次加密结果；最后，利用Lorenz超混沌系统对初次加密后的语音数据进行Arnold二次置乱加密和异或扩散加密，获得最终的密文语音数据。实验结果表明，与现有方法相比该算法具有更大的密钥空间和更高的加密效率，且对各种密码攻击拥有更好的鲁棒性。

Abstract

Aiming at the problems of small key space

poor security

low encryption efficiency

and the inability to realize the trade-off between key complexity and encryption efficiency of existing speech chaotic encryption algorithms

a dual speech encryption algorithm based on improved Henon mapping and hyperchaotic was proposed.Firstly

the traditional Henon mapping was improved by extending the control parameter range and taking the nonlinear trigonometric function as the input parameter variable

which made the Henon mapping have larger chaotic space and higher chaotic complexity.Secondly

the improved Henon mapping was used to generate pseudorandom sequence

and the speech data was encrypted single time without repeated scrambling to obtain the first time encryption results of the speech data.Finally

Lorenz hyperchaotic system was adopted to encrypt the speech data after the first time encryption by Arnold secondary scrambling encryption and XOR diffusion encryption to obtaining the final ciphertext speech data.The experimental results show that

compared with the existing methods

the proposed algorithm have larger key space

higher encryption efficiency

and stronger robustness against various cryptographic attacks.

关键词

Keywords

references

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