Data Integrity - How Hashing is used to ensure data isn't modified - HMAC - Cryptography

Data Integrity seeks to assure that data has not been modified in transit between a sender and receiver. This assurance is provided using a Hashing Algorithm... but not simply by itself, that leaves you open to an attacker modifying your message and re-calculating the digest. Instead, something else must be done in addition to Hashing.

In this video, we discuss that "something else". This will have us introduce the concept of a Message Authentication Code (MAC), and the most common implementation of a MAC known as the HMAC (Hash Based Message Authentication Code).

This lesson is a free sample lesson from the the most effective TLS and SSL training course ever created. No instructor rambling on about pointless stories. No slides with massive walls of text. No time wasting. Only simple, effective, and precise explanations. Complimented with practical illustrations and visuals.

🔐 More details about the course:

🏢 Do you configure or troubleshoot TLS/SSL for work? If so, I'm willing to bet your employer would happily pay for this SSL training. Reach out if you'd like to coordinate an introduction for a bulk license purchase with your company. I'm happy to provide a generous referral bonus =)

💬 Join Practical Networking Discord

🖧 Want to learn how how data moves through a network?

Since you've made it to the bottom of the Description, here's a $100 off coupon code you can use on the full course =)
YT100

[PracticalNetworking]

💲 *Coupon Code* for 50% off: youtube50

[techhack]

The Best Teacher I've ever seen in my lifetime!💯😍

[DeRizzlo]

this video basically explained to me what my entire 3h lecture was tryna say but failed horribly. Youtube is crazy for educational videos like these!! thank you so much

[Eonwe]

I’m binging your vids this weekend. Your explanation of how ports work and why they exist was so clear and easy to grasp that I’ve been completely sucked down this rabbit hole of your videos. You’d be amazing at explaining how the Bitcoin network works.

[sergiopimentel]

Hey man, I just want to thank you for uploading these videos, they have been of incredible help. There are a few videos out on YouTube but honestly, yours are the only ones I can learn from, I'm an audiovisual learner so again Thank you!

[PracticalNetworking]

🥳🥳- Promotion Ended - Congrats @Pratik Dhame and @Mehul 🥳🥳

For the rest of you, you can use this discount code for $100 off the course: YT100

Subscribe + Notification bell to increase your odds of winning when the next video (and giveaway) releases!
📢📢 FREE COURSE GIVEAWAY 📢📢

[Truthseeker_N]

Thank you for taking the time to explain this. I've almost given up understanding the concept. Most websites I read it got me more confused than I was. It's clearer now

[piratevv]

Thanks for these. These are Gold. I am seeing networking now with much a solid path to troubleshoot and know what really is happening!!!

[saravanamanivannan]

If you are following the entire series, remember that he mentioned that Integrity and Authentication provide Non-repudiation as a byproduct. However, that principle does not work in this scenario. Why? Because in HMAC, the use of the same secret key eliminates non-repudiation. In order to achieve non-repudiation, the sender and receiver must use asymmetric keys (a different pair of keys for encryption and decryption).

[ajayb]

Awesome explanation👍 You're the best in making things simple. I can never stop watching your videos.

[skellybin]

I was thinking of this very hard while working on my simple secure communication protocol project. Thank God I understand now

[adedejiemmanuel]

Another great one. Teaching with passion and conviction. I am your believer. Thank you.

[iliandrei]

That's soo nice, great way to understand how important it's the data integrity in the modern world. Thank's to you I am beginning to get more into networking

[VideosfromElle]

This is the definition of crystal clear, and an encouraging way to ultimately F with bahd guyz

[guilhermereis]

Thanks for explaning how hash works, hugs from Brazil!

[theegg]

Thx for the best explanation I’ve seen in months. Helped me a lot. 🙂

[jackyyeh]

Finally, know how it works from this video

[niyeamerika]

Thank you. You have the best explanations on the subject. 🙏👍

[marekgalbavy]

Great video, thx for help, i am preparing for certification and yours video help me a lot.

[silentrandom]

Pretty neat stuff. Thanks for sharing the videos.