一种基于PSTN加密调制解调器方法研究

One Way of Encrypting Modem Based on Public Switched Telephone Network

提出了一种基于PSTN的信息安全的研究方法 ,即用DSP控制通用的调制解调器芯片 ,实施口令验证、身份鉴别、混沌信源加密等保密方法 ,并配以液晶显示模块 ,从而实现一种具有显示功能加密的调制解调器。此种调制解调器适合于利用PSTN网络进行信息的高强度的保密传输。

This paper introduces one way of information security based on Public Switched Telephone Network (PSTN),that is using Digital Signal Processor (DSP) to control the normal modem chip,implementing encryption, decryption and authentication of messages. The liquid crystal display was designed in encrypted modem