这些协议提供机密性、身份验证和消息完整性。

These protocols provide confidentiality, authentication and message integrity.

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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.

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了解了身份验证和授权之后，消息完整性部分就容易理解了。

Now that authentication and authorization has been covered, the message integrity part is easy.

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