它是对身份验证、消息来源验证和完整性以及消息机密性进行抽象的一组编程接口集合。

It is a set of programming interfaces that abstracts identity authentication, message origin authentication and integrity, and message confidentiality.

youdao

这意味着您可以通过发送者（和接收者，如果必要的话）的 MAC 地址来验证信息的来源，额外提供了一级安全性。

This means that you can verify the source of the information by using the MAC address of the sender (and the recipient, if necessary), providing an additional level of security.

youdao

对每个场景我都找到了两到三个来源来验证。

I have two or more sources that verify each scene.

youdao