what is ssl certificate how does it work code example

Example 1: what is SSL

SSL, short for Secure Sockets Layer, is 
commonly used on e-commerce sites and pages that 
require users to submit personal or credit card information.
ensurs that all data passed between the two parties remains private and secure
prevents hackers from stealing private information 
such as credit card numbers, bank information, names, and addresses

Example 2: ssl certificates

A SSL certificate is required for all SSL transactions.
SSL allows for authentication and encryption for website connections.
There are two types of certificates:
- Self signed: generated by applications
- CA signed: generated and signed by CAs (Certificate authorities)

Self signed certificates are often used in testing environments whereas CA 
signed ones are what you should use in production. (may cost cashinga)