一种新型信息隐藏技术的研究与实现

Research and Implementation of A New Information Hiding Technology

信息隐藏是把机密信息隐藏在大量信息中不让对手发觉的一种方法,是一种新型的保密方式,它对计算机、通信技术等领域的研究具有十分重要的意义。在信息隐藏技术和混合扩频的理论基础上,采用FPGA与PC机实现了基于混合扩频技术的信息隐藏系统,将秘密信息隐藏在音频信号中实现信息的秘密传输。测试结果表明,加入秘密信息后的音频失真小,接收端恢复信号误码率维持在10-5左右,可实现完整的保密通信。

information hiding is referred to hiding the secret message in a large amount of information without being noticed by adversaries. It is a new way to keep secret, and is significant for the research work in the area of computer science and communication technology. Based on the basic theories of information hiding and mixed spread spectrum technology, the information hiding system based on mixed spread spectrum technology is realized by using FPGA and personal computer, thus to implement the transmission of secret message in the audio signal. The experiment result shows that the distortion of audio signal containing the secret message is small, and the error rate of recovered information could be retained at about 10^-5. The system could realize the whole process of crypto communication.