System and implement method thereof for secret communications based on public communication network voice channel
A voice channel and secure communication technology, applied in voice analysis, transmission system, digital transmission system, etc., can solve the problems of high technical difficulty, inconvenient implementation, and low reliability of voice encryption methods, so as to achieve high algorithm security and reduce application The effect of restrictive, simple and efficient encryption
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[0031] In order to solve the problems in the prior art that the voice encryption method for the public communication network is not reliable, technically difficult, and inconvenient to implement, such as figure 1 As shown, the present invention discloses a system for secure communication based on the voice channel of the public communication network, the system includes:
[0032] Power supply: supply power to each module in the system, the power supply can be external power supply or built-in battery;
[0033] Processor: Control the digital-to-analog mapping modulation / demodulation module to perform signal modulation and demodulation, control the voice compression / decompression module to compress and decompress voice, and encrypt, decrypt and process voice signals;
[0034] Digital / analog conversion module: convert the voice signal from analog voice to digital voice, that is, convert the analog voice signal into a digital voice signal on the sending end, and convert the digita...
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