HMAC & Message Authentication Codes (MACs): Ensuring Data Integrity Beyond Hashing

This is one of the many videos in the mini-series of HTTPS
https://www.youtube.com/playlist?list=PLql0J2JIDXdOREGUibCXlsevKDK4o8EzN

Read it as article from:
https://medium.com/@jaypmedia/hmac-message-authentication-codes-why-hashing-alone-is-not-enough-for-data-integrity-96f636aa0c11
https://dev.to/jaypmedia/hmac-message-authentication-codes-why-hashing-alone-is-not-enough-for-data-integrity-36ad


Any developer should understand the importance of TLS, and understanding Message Authentication Codes is a critical prerequisite.
Understand in this video why hashing alone won't do it for integrity, and learn why HMAC is used in TLS

0:00 Introduction
0:40 Bit Flipping Attack
1:14 Hashing
1:55 The problem with Hashing
2:19 What is HMAC
3:25 MAC algorithms
3:51 HMAC in TLS
4:07 HMAC is flexible
4:17 HMAC is standardized
4:32 Security of HMAC
5:25 Why HMAC modifies key internally
5:55 THE END