任何人都可以阅读该消息中的数据，但是您可以检查内容的完整性。
Anyone can read the data in the message, but you can check the integrity of the content.
它可用于验证消息、提供完整性检查，以及提供加密密钥来保证数据的机密性。
It can be used to authenticate the messages, to provide integrity, as well as encryption key to ensure confidentiality of the data.
基本上你正在构建一个安全检查数据完整性每次从用户发送一条消息。
Essentially you're building in a failsafe that checks data integrity everytime a message is sent from the user.
基本上你正在构建一个安全检查数据完整性每次从用户发送一条消息。
Essentially you're building in a failsafe that checks data integrity everytime a message is sent from the user.
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