The key thing to remember before sending any woman a message is to be real and confident at the same time.
在给任何女人发信息之前，要记住的关键一点是要同时做到真实和自信。
2
Instead of simply sending its public key to the receiver, the sender sends its digital certificate issued by a ca.
发送方发送由CA签发的数字证书，而不仅仅是向接收方发送其公钥。
3
This proof of possession is similar to how the SSL handshake protocol uses encryption to prove that a client is in fact the holder of a private key, without sending the key itself.