SSL证书有什么用？

SSL证书提供了一种在互联网上身份验证的方式，是用来标识和证明双方身份的数字信息文件。使用SSL证书的网站，可以保证用户和服务器间信息交换的保密性具有不可窃听、不可更改、不可否认、不可冒充的功能。

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