Chapter 9, Loading Secure Web Pages with HTTPS and OpenSSL

1. What port does HTTPS typically operate on?

HTTPS connects over TCP port 443.

2. How many keys does symmetric encryption use?

Symmetric encryption uses one key. Data is encrypted and decrypted with the same key.

3. How many keys does asymmetric encryption use?

Asymmetric encryption use two different, but mathematically related, keys. Data is encrypted with one and decrypted with the other.

4. Does TLS use symmetric or asymmetric encryption?

TLS use both symmetric and asymmetric encryption algorithms to function.

5. What is the difference between SSL and TLS?

TLS is the successor to SSL. SSL is now deprecated.

6. What purpose do certificates fulfill?

Certificates allow a server or client to verify their identity.