What is an SSL Certificate?
It is a certificate that can be verified as coming from a trusted source. They also come with an encryption key pair, or a public and a private key, just like PGP and GPG used for emails and other encryption needs.
#### How is the SSL certificate used?
1. Browser connects to a website that is secured with SSL. Browser requests that the server identify itself.
2. Server sends a copy of its SSL Certificate, including the server’s public key.
3. Browser checks the certificate root against a list of trusted CAs that it is valid for the website that it is connecting to. If trustworthy it creates, encrypts, and sends back a symmetric session key using the server’s public key.
4. Server decrypts the symmetric session key using its private key and sends back an acknowledgement encrypted with the session key to start the encrypted session.
5. Server and Browser now encrypt all transmitted data with the session key.
You can get more info 👉 [here](https://www.digicert.com/what-is-an-ssl-certificate).
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