What are SSL/TLS Certificates? Why do we Need them? and How do they Work?

In this video I explain the purpose of TLS/SSL Certificates, why did we invent them and what are their limitations. This is what gives you the green padlock on your browser which indicates you have a secure website.

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Stay Awesome,
Hussein

[palaniappanrm]

The missing puzzle in all your existing CA/TLS video was what the CA exactly does which is explained here. It takes the public key of the server and signs (generates digital signature) with his private key so that any clients can decrypt the content and verify if the public keys are the same to trust the server. Love to learn more from you. Thanks 👍

[ahmedakef]

really this is a great explanation
but at 11:45 you say that the way of verification is that it encrypt the certificate with the certificate authority public key and check if it output the same signature, I think this is not a way of verification as if the signature is the encryption of the certificate using the public-key then any one can fake the certificate easily

I think the only of verification is the other way you mentioned in 11:54 which is decrypting the digital signature using the public-key of CA which result in a hash then compare this hash with the hash of the content of the certificate and if it match, then everything is correct

I think that I read before that in digital signature, it is created by encrypting the content using private-key and other people decrypt it using the public-key

[preetiptl]

Man, you are genius!! I’ve spent almost an hour checking other videos about ssl but couldn’t understand it completely. But the way you explain it, it’s super clear now. Thanks a lot

[dhruvkaith]

I understood public key cryptography, but was looking for how these certificates are exchanged. This explanation was spot on, thank you so much.

[melika]

This is the best explanation that I've seen about keys and certs. Tanx Man!

[aaronestes]

"take my public key beautiful" lmfao

[mosup]

I like your personality and your way of teaching. Listening to you is entertainment and learning at the same time. Keep up man ❤️

[len_kimjones]

This is by far the best explanation I've seen on SSL certificates. Thank you!!

[giri]

Really helpful lecture to understand the fundamental of exchanging the keys and how do they encrypt.

[Sathish]

Wow what a clear insight.when i search for this in youtube i got a video a guy in dark light and writing in transparent board but it was nothing near to your videos but his video got 100k views wondering comparing to that your content deserves 1M views. You’re missing some YouTube strategies

[SalmanAli-mece]

I've just watched this video ten times just to enjoy the stuff. Really cool way of teaching.

[sauravmaity]

Oh man !! You just made it perfectly simple. Enjoyed learning.

[Rb_Laden]

I just want to say, i love your energy!! Great video btw!

[mybaestgameisnfsmw]

Such an amazing video Hussein. Thank you so much for a fun and interesting way of teaching this. Liked and Subbed :)

[davee.]

This left no questions open, amazing.

[richardwang]

Here is my comment, son.
This is a great video, thanks

[jainkapil]

Hii Hussein
Thanks for all the videos you make and share ur knowledge with us. i have gained alot of knowledge from your videos ❤️❤️❤️

I am little bit confused on cipher suit which is exchanged during SSL or TLS it will great if you can make a video on how each algorithm in cipher suit syntax helps in establishing a secure connection

Lots of love from India ❤️❤️❤️

[kumaravelrajan]

I was really struggling to understand the chain of trust concept. Thanks for this wonderful explanation.

[sandeepgamot]

Thanks alot for the content youre puttting out man. Really appreciate it captain
.

[piyushpasari]

This explanation was exactly I was looking for. Thank you!