SSL/TLS证书
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SSL（安全套接字层）及其后继TLS（传输层安全）是加密Web浏览器与服务器之间数据的加密协议。SSL/TLS证书将域名与加密密钥绑定，启用HTTPS连接。
示例
The padlock icon in your browser indicates an active SSL/TLS certificate, meaning data between you and the website is encrypted.