信阳师范学院学报（自然科学版）2017，Vol.30Issue(1)：134-139,6.DOI:10.3969/j.issn.1003-0972.2017.01.030
一种安全的抗去同步攻击数字语音取证算法
A Security Algorithm for Digital Speech Forensics Robust Against Desynchronization Attacks
摘要
Abstract
On the basic of the undeterminate angle of discrete fractional fourier transform and the close relation be⁃tween Bessel⁃Fourier moments and the corresponding scrambled signal, a security algorithm for digital speech forensics robust against desynchronization attacks was proposed. The scheme solved the problem of insecurity and incapable of tamper location for watermark schemes based on synchronization code. Watermark bits were generated by using frame number and discrete fractional fourier transform ( DFRFT) coefficients, and embedded into amplitudes of Bessel⁃Fou⁃rier moments( BFMs) of scrambled signal. Theoretical analysis and experimental evaluation results showed that, com⁃paring with the existing watermark schemes, the proposed scheme not only was inaudible and tolerance against common signal processing operations, but also had the excellent ability of tamper detection and improved the security of water⁃mark system.关键词
数字水印/语音取证/离散分数傅里叶变换(DFRFT)/贝塞尔-傅里叶矩(BFMs)Key words
digital watermark/speech forensics/discrete fractional fourier transform(DFRFT)/Bessel-Fourier moments( BFMs)分类
信息技术与安全科学引用本文复制引用
杨艳华..一种安全的抗去同步攻击数字语音取证算法[J].信阳师范学院学报（自然科学版）,2017,30(1):134-139,6.基金项目
河南省科技计划项目（152300410223）；河南省高等学校重点科学研究项目（16A110037）；信阳农林学院2014年度青年教师基金 （）
