音频数据加密的二值音频可听密码方案

张选平 1; 王旭 2; 邵利平 3; 赵仲孟 1

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音频数据加密的二值音频可听密码方案

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- 音频数据加密的二值音频可听密码方案
- An Audio Cryptography Scheme for Binary Audio
- 西安交通大学学报 2012年46卷第8期页码：27-32
- 作者机构：
  
  西安交通大学电子与信息工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2012-01-07. 作者简介: 张选平(1963-),男,副教授. 基金项目: 国家自然科学基金青年科学基金资助项目(61100239);教育部高等学校博士学科点专项科研基金资助项目(61100239)
- DOI：
  中图分类号： TP309.7
- 网络首发：2012-08-10，
  
  纸质出版：2012
- 稿件说明：
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张选平 1, 王旭 2, 邵利平 3, 等. 音频数据加密的二值音频可听密码方案[J]. 西安交通大学学报, 2012,46(8):27-32.

An Audio Cryptography Scheme for Binary Audio[J]. 2012, 46(8): 27-32.
张选平 1, 王旭 2, 邵利平 3, 等. 音频数据加密的二值音频可听密码方案[J]. 西安交通大学学报, 2012,46(8):27-32. DOI：

An Audio Cryptography Scheme for Binary Audio[J]. 2012, 46(8): 27-32. DOI：

摘要

数字音频文件数据量大、相关性强、冗余度高

传统加密算法难以满足其实时安全性要求.针对此问题

根据人耳听觉特性提出了一种基于二值音频的可听密码方案.该方案借鉴图像半色调技术对秘密音频数据进行二值化处理

以降低音频信息的数据量; 结合可视密码技术的(k

n)门限方案的基本阵对二值数字音频进行分存和加密

从而破坏了原始音频数据之间的相关性.在解密时只需同步播放任意k份秘密音频就可直接通过人耳听觉系统解密

少于k份的任意秘密音频同步播放不会暴露原始音频的任何信息.实验结果表明

加密后的音频具有良好的随机性和安全性.与原始秘密音频相比

恢复后的秘密语音虽有一些失真

但其语音内容易于辨识、可懂.

Abstract

The characteristics of digital audio such as a large quantity of data

strong correlation and high redundancy

make it difficult to meet real-time security to encrypt digital audio by using conventional encryption algorithms. An audio cryptography scheme based on binary audio is proposed by using the auditory properties of human being. In order to reduce the amount of audio data

the secret audio is transformed into binary audio by halftone as in the image process. The basic array of(k

n)threshold in visual cryptography scheme is used to share the binary audio so that correlations in audio data is removed. The secret audio information can be directly decrypted through human auditory system by synchronously playing any k shares of the binary audio

but synchronously playing any m(m<k)shares does not disclose any information. Experiments show that the encrypted audio by the proposed scheme has high randomicity and security. Comparisons with original secret audio show that although the decrypted secret voice has some distortion

its content is still natural and comprehensible.

关键词

Keywords

references

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