Research and design of a low-cost communication security system

Abstract

In the information society, voice communication is the most common and indispensable in daily life, so the communication security issue is particularly important. Aiming at the security problem of voice communication, a low-cost communication security system based on single chip microcomputer is designed. The system is mainly divided into a confidential sending module and a confidential receiving module, which can realize two functions of ordinary call and confidential call, and realize synchronous confidential communication by using a single chip computer to generate random keys. The test results show that the system can realize the function of communication security, and can realize the module miniaturization, which is convenient to make a high density communication security tool.