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为了保证数字信号与所传信息的安全,防止无权用户干扰和窃密,一般应采取加密措施。数字信号比起模拟信号来易于加密,且效果也好。这是数字通信突出的优点之一。国内的网间隔离安全设备(如防火墙等)产品较多,但服务器的安全和与之通信的客户的安全更为重要。服务器和客户端的软件应具有信息加解密、
In order to ensure the security of the digital signal and the information transmitted and to prevent the unauthorized users from interfering with the theft of the signal, encryption measures should generally be taken. Digital signals are easier to encrypt than analog signals, and the effect is good. This is one of the highlights of digital communications. There are a lot of products in the domestic network that isolate the security devices (such as firewalls), but the security of the server and the security of the clients with whom it communicates are more important. Server and client software should have information encryption and decryption,