摘要
利用实时语音传递秘密信息在隐蔽通信中具有重要意义。采用改进的LSB算法和同步技术,将秘密信息隐藏在传输的语音帧中。根据嵌入秘密信息的容量,将密文分段并对每段密文添加同步码,最终将含有同步码的秘密信息嵌入到载体数据的倒数第二位。同时,比较分析了实时传输时每帧的嵌入容量。实验结果表明,该方法具有较强的鲁棒性和不可感知性,且嵌入容量为50个字符时比较合理。
The transmission of confidential information using real-time voice has great significance in the covert communication. The secret information can be hidden in the transmission of voice frames by using improved LSB algorithms and synchronization technology. Based on the capacity of embedding secret information, the algorithm will divide secret information into pieces and add synchronization code into each piece, and ultimately embed the secret information containing synchronization codes to the penultimate position of carrier data. At the same time, the embedding capacity of each frame during real-time transmission is compared and analyzed. The experimental results show that this method has strong robustness and unperceptibility, and the embedding capacity of 50 characters is reasonable.
出处
《北京石油化工学院学报》
2010年第2期50-54,共5页
Journal of Beijing Institute of Petrochemical Technology
关键词
实时语音
信息隐藏
同步码
LSB
real-time voice
information hiding
synchronization code
LSB
