Abstract: For the features of G.723.1 and chaos-based system, this paper introduces an approach that hides the information in chaos-based secure communication system by sending information in the less significant bits of the coded audio data. Experimental result proves that hidden transfer and real-time update of the key makes the system more secure. It can be widely used in places where secure communication is needed to avoid wiretapping and guarantee security.

Key words: G.723.1, chaos-based system, information hiding

摘要： 对G.723.1语音编解码算法和混沌系统的特点进行分析，提出了一种在语音混沌保密通信过程中进行信息隐藏的方案，利用编码语音数据的低有效位安全传递保密信息。试验证明，该方案可以实现密钥的隐蔽传输和实时更新，进一步提高通信过程的抗破译能力。能够广泛应用于各种需要保密通信的场所，防止遭到窃听，保证信息安全。

关键词: G.723.1, 混沌系统, 信息隐藏

CLC Number: 

• TP393