PKI Explained: Securing Web Communication 🔐

This video dives deep into the world of Public Key Infrastructure (PKI), explaining how it secures communication between your browser and a web server.

We start with the basics of setting up a website and quickly move to the issue of hacker interception and the need for secure communication.

What you will learn:

- The difference between a public key (for encryption) and a private key (for decryption).
- How asymmetric encryption and a symmetric key work together to secure a session efficiently.
- What a man-in-the-middle attack is and how a Certificate Authority (CA) prevents it.
- The purpose of a Trust Store and why operating systems trust certain CAs.
- The Chain of Trust flow: Root Certificate, Intermediate Certificate, and Leaf Certificate.
- The use of Subject Alternative Name (SAN) and wildcard certs for domain protection.

If you are setting up a secure website or want to understand foundational internet security, this video is for you!

0:00:00 - Intro
0:01:04 - Switching from Asymmetric to Symmetric Encryption
0:01:54 - Man-in-the-Middle Attacks
0:02:58 - The Trust Store
0:03:41 - The Chain of Trust
0:04:47 - Subject Alternative Names (SAN)


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