摘要
针对语音信息被窃听的问题,提出了一种将语音进行压缩、加密并隐写于彩色图像的方法。首先,通过采样得到音频序列,然后构造了音频的一种压缩方法,利用Logistic映射构造了音频的加密方法,最后利用改进的LSB算法,将加密后的序列嵌入RGB图像中实现数据隐藏。利用输入的密码,通过提取、解密、解码、数模转换等反向操作便可听到图像中嵌入的语音信息。经实验仿真和隐蔽性、密钥安全性、载荷分析表明,采用该方法能在彩色图像中隐藏大量的语音信息而不影响图像的质量,且密图有很强的抗破解能力。
To solve the problem of voice information tapping,a method of compressing,encrypting and hiding voice in color image is proposed.Firstly,the voice is sampled to obtain the digital audio sequence,then,an audio compression method is constructed.And an audio encryption method is established by using the logistic mapping to construct encryption method.Finally,the improved LSB algorithm is used to embed the encrypted sequence into the RGB image to realize data hiding.Using the input password,we can hear the voice information embedded in the image through extraction,decryption,decoding,digital to analog conversion and other reverse operations.After the experiment and analysis of the invisibility,security and hiding capacity,it reveals that using our scheme can hide a lot of voice information in color image without affecting the quality of the imagery,and the secret image has strong anti-cracking ability.
作者
徐畅凯
XU Chang-kai(Pass College of Chongqing Technology and Business University,Chongqing 401520,China)
出处
《信息技术》
2023年第5期41-48,共8页
Information Technology
基金
重庆市教改基金项目(193318)。
