dude this stuff is more addictive than netflix

@sunnyclassroom24

4 жыл бұрын

You make me laugh. Thank you very much!

@azadjohari

3 жыл бұрын

totally!

@juliohdez5327

2 жыл бұрын

agree

What a great material. I’m amazed by the elegance of simple explanations for complex topics. Solid gold.

@sunnyclassroom24

4 жыл бұрын

Much appreciated!

This is for sure the best introduce-level cyber security series i've ever watched! thank you soooo much for the clear examples and animation, these videos saved hours for me

Sunny is the best person i have ever heard at explaining things. I present IT concepts at work in to non technical people. I take Sunnys videos and copy them word for word, he is amazing.

Easy to follow, clear and to the point. If one needs more, there are RFCs. Keep up the good work and thumbs up for all your videos Sunny !

Thanks Sunny - you helped me pass Security +, now I'm on to CEH. Love these videos!

@sunnyclassroom24

5 жыл бұрын

I am so happy for you and Security+ is not easy to pass. Congratulations!

True! This is also the best video I've watched concerning digital signatures and certificates. After watching this, I've already understood everything related to this topic! Thank you so much sir!

Thank you Sunny! i am doing security+ and following your channel for quite a bit now. Your videos are so amazing and simple. I have been so confused about these topics, i watched so many videos and they complicate things so much. Watching your videos on the topic really helped me to understand this topic and now i can even understand the more complex version of explanations in my course and book. Keep doing what you are doing:)

@sunnyclassroom24

3 жыл бұрын

Best of luck!Thank you for watching!

You make complex-sounding things so easy by concepts and analogies you bring in.

What a quality explanation!. Those very nice animations help a lot to understand the thing. Thanks for these amazing videos. Cheers!

Your explanation is still valuable to me in 2023. Clear and easy to understand! Thank you for your kind sharing!

Sunny, you are the best! Thank our for your videos

@sunnyclassroom24

6 жыл бұрын

Many thanks for your words.

Sunny, you do an amazing job! You are clear, simple to understand, perfect teacher!!! Thank You!

@sunnyclassroom24

4 жыл бұрын

Thank you for your compliments! I appreciate.

After look at many of your tutorials and I conclude that you have give lesson to many people with great explanations. Salute, success for you Sunny 👍

Thank you for clarifying. You make the best tech videos that simplify even the complicated and confusing concepts.

Wow, you've got such an ability to explain things in the easiest way. Thanks so much for that.

The BEST explanation of this complex subject, using the best choice of words. Awesome!!!

Thank you very much for this video and the digital signature video. It helps me a lot to know the back-end theory. The speed and how you present it also helps a lot.

@sunnyclassroom24

3 жыл бұрын

Glad it was helpful!

Thanks for the videos. I really appreciate that you put what you're saying , helps me a lot

@sunnyclassroom24

6 жыл бұрын

You are welcome and I am glad it helped.

Hi Sunny 🖐️ Started watching your videos since yesterday. Your explanation and examples are very clear. Thank you so much.

@sunnyclassroom24

4 жыл бұрын

Thanks and welcome!

Hi Sunny, your video is so warming and it is a leisure to watch your videos. You indeed have the caliber to be the most caring teacher in the world. Everyday is a sunny day by watching your video. Not only informative, it is a real pleasure to watch your video. Thanks a lot.

Sunny, why are you so good at explaining these stuff. Please make more videos on networking

I love how slow you go and the visuals! very easy to follow.

@sunnyclassroom24

4 жыл бұрын

Thanks.

I am a newbie to networking and this is the only video i found easy to understand the digital certificate

@sunnyclassroom24

4 жыл бұрын

Thanks!

another great video! thanks for making certificates easy to understand.

Thank you sir, Your explanation is very simplified. It basically gave a good overview of the concept.

simple yet clarity on your videos amazed me

HEY MAN, YOUR CONTENT IS AMAZING. KEEP UP THE GOOD WORK!!!

ich habe in meinem Leben nicht so viele Erzählern gesehen wie Sie. Thank you very much from Austria...

Amazing stuff. This video and the one on digital signature. It's like stumbling onto a gold mine.

These are solid videos, thanks for uploading them!

Always the best video in cyber security. Thanks, Sunny

@sunnyclassroom24

4 жыл бұрын

Thank you for watching!

God bless you my man. Now I will pass my programming exam. Godspeed!

@sunnyclassroom24

3 жыл бұрын

Good luck!

Very nice, sunny classroom! Your videos helped me a lot. Keep up with good work!

@sunnyclassroom24

6 жыл бұрын

Thanks. I am glad it is helpful.

Thank you so much. The way you explain is the best. Example based learning is always fruitful.

You are really a great teacher. YOU made us understand in better way

@sunnyclassroom24

4 жыл бұрын

Thank you very much!

Sir , you explained difficult things in a very simple way. Thankyou 😊😊

Thank you for your video! Appreciate your time and effort! You saved me hours.

@sunnyclassroom24

5 жыл бұрын

You are welcome! I try my best to save learning time so that everyone is happy :)

A great video again. Thanks Sunny!

Finally understood. Many thanks, Sunny Classroom.

@sunnyclassroom24

6 жыл бұрын

you are welcome!

I was preparing for a seminar... About this topic .. It was so helpful to me . Thank you so much... Seeing frst time ur vids... But it is understandable 🙏🙏🙏🙏

Thanks Sunny, very informative and well presented.

I like that intro music so much btw 😊. Well thanks for so clear explanation ♥

@sunnyclassroom24

5 жыл бұрын

Thanks a lot for your kind words.

Sunny, you are the man.

You're the best teacher!

Sunny you are simply amazing , i got to your video to day but for sure it is like miracle from God, I was preparing my exam but this is absolutely stunning

@sunnyclassroom24

4 жыл бұрын

Wonderful!

Very professional videos, keep on as you save hours for us

Thank you Sunny! Your videos are very helpful!

@sunnyclassroom24

3 жыл бұрын

My pleasure!

Best explanation in simple language

I am every day watching your videos, thank you so much for your effort and clear explanations. 🙏👍👌

Thanks mate :: simple language and well explained ..Thanks

Sunny thanks, I enjoy your videos, well explanatory

Wonderful video! Very nicely explained!

thank you for this great explanation!

Absolutely fantastic

Great video and very simple way of explanation

I love you sunny, what great content!!

thank you so much for posting these videos, they help a lot!!!!!!!!!!!

@sunnyclassroom24

4 жыл бұрын

You are welcome! Thank you for your time! Check out my other videos please!

Thanks for the video, well explicit

Thank you so much! This was very helpful 🤠

you are a great teacher!

@sunnyclassroom24

6 жыл бұрын

Many thanks.

now that was the explanation i want thank you sunny✨✨😊

@sunnyclassroom24

5 жыл бұрын

You are welcome!

thanks sunny, you made it clear!

love what you do !!! thank you so much :)

Great explanation!

Excellent explanation Sir.

Thanks very informative and clear!

@sunnyclassroom24

6 жыл бұрын

you are welcome, Guangzhe!

I love your videos, sir!

you're great sir. Thanks for your videos

Excellent explanation.

Keep it up! You are great.

@sunnyclassroom24

6 жыл бұрын

Many thanks for your encouragement!

Hi Sunny, thank you for hard work and your videos. Only one hint is, that lists 11 and 12 are the same. Greetings from Germany, Pfiley.

@sunnyclassroom24

4 жыл бұрын

Thank you for noticing that.

best explanation!

Sunny you are a champ..

Networking has been made a piece of cake by Sunny - :-) Excellllllent.

@sunnyclassroom24

5 жыл бұрын

Thank you for your appreciation.

Very Well explained

Greatly simplified.. Even a layman can understand it very easily.. Sir as you explained PRIVATE KEY is used for DIGITAL SIGNATURE . My question is what is the use of PUBLIC KEY?

@kattopeter7280

2 жыл бұрын

we use the Public Key to decrypt, that make authentication and non-repudiation

Thank you very much

very well explained sir... thanx

@sunnyclassroom24

5 жыл бұрын

You are welcome!

Dear Sunny, can you please explain how 2 way SSL works where client and server each have to show their certificates. Do we have to take the client certificate and install it in the server keystore and vice-versa. It would be great if you can clarify this with a video or point me to one that you have already created.

Hey Sunny, thank you very much for your well explained videos !! I am really greatful. I saw this video, the one of digital signature and the asymmetric and symmetric key encryptions. I would like to ask you in terms of security objectives: confidentiality, integrity, availability, authenticity and accountability. If I have to relate those objectives to the symmetric and assymmetric key encryptions... Which security objectives achieve the symmetric key encryption and which ones achieve the assymmetric one? What I think according to your videos is that symmetric key encryption ensures confidentiality due to their private key however doesn't ensure authenticy due that they have only one same key which can be intercepted by a hacker and assymmetric key encryption ensures authentication and integrity through the digital certificate. Am I correct? what can you add to that? And one last question is: has the message authentication code (MAC) similar logical to what you explained to the digital certificate? thank you very much in advance :) Greetings from Belgium

@sunnyclassroom24

6 жыл бұрын

First of all, thanks for your great questions. Encryption can be very complicated. To keep it simple, asymmetric key encryption and symmetric key encryption would work together to make sure authenticity and confidentiality. I have videos about "how SSL works" to demonstrate how they work together. for example, you (your browser) wants to talk to a web server and all conversation should be encrypted (that is why we need https: and padlock). first, your browser wants to verify that the server is the server you wants, and your server will use asymmetric key to send you "digital certificate". Once your browser has verified the server, then it will send its private key (symmetric key encryption) to the server encrypted by the server's public key, and then only the server can decode the browser's private key with its own private key. It might be confusing at this point. Once the server get your browser's private key, then all conversation would be encrypted. I have also one video " Kerberos", which only use symmetric key algorithm. In summary, asymmetric key encryption is normally used to verify each other and exchange the secret key (private key of symmetric key) so that they can encrypt their conversation. I hope my answer would be helpful. Please do not hesitate to ask me any questions.

Great video. I've a question: Isn't every public unique? If so, why Alice can't tell the difference between Bob’s public key & hacker’s public key? If not, is there a way to do it without a 3rd party?

Good Man Sunny

Can we say that the X.509 is the framework for Digital Certificate?

excellent !!!

@sunnyclassroom24

4 жыл бұрын

Many thanks!!

Hi Sunny. Great video. But what is to stop hacker from intercepting public key with digital certificate and using this public key to de-crypt (and read) the message? Thanks

Thank you 😬 for the video bro Love from india

Thanks a lot Sir !!!

@sunnyclassroom24

4 жыл бұрын

you are welcome!

thank you so much this helped my cpa exam it section

@sunnyclassroom24

4 жыл бұрын

Great to hear!

How the alice will use the bob public key during middle man attack(how alice know weather to use the bob key or hacker public keys)

your music is the best

Great Video.

@sunnyclassroom24

5 жыл бұрын

thanks.

asymmetric RSA key pair that is signed by Samsung's root key through an X.509 certificate. Can you please explain the meaning of above sentence.

If I secretly give Public key to few of my clients , then DIgital signature is fine with no drawbacks ?

Hi cant the hacker take the msg, edit the msg and exchange public key from digital certificate with his own public key then encrypt his msg with his private key

Sir, but why can't hacker intercept the message with digital certificate and create an entire new message and fake certificate and send it to alice?

@sunnyclassroom24

6 жыл бұрын

great question. our browser would check digital certificate if it is valid because our popular browser has pre-loaded with major CA's public keys and also our browsers would actively work behind scene with CA's servers to make sure digital certificates are real and valid.

@praaksh

5 жыл бұрын

Hi Miirar, Its a good ques! In a real world scenario, ideally an client(browser) interacts with the server and when the server returns the digital certificate, the browser validates the CN(Common name) of the server to verify its identity, normally the domain name(say google.com) would the Common name(CN), when as mentioned by you, if the hacker intercepts the message and presents a fake digital certificate, the browser identifies that the Common Name is different(say xyz.com) than that of the reqested one(which google.com), browser alerts us by throwing the error message NET::ERR_CERT_COMMON_NAME_INVALID, Additionaly also the pad lock turns to red colour.

@cyberlinksitcollege7traini557

4 жыл бұрын

Good question .. actually the receiver will send the certificate of insurance to the CA and after CA confirm than it will start further communication

Great video---can you please tell me . when digital signature is sent to client then its encrypted. also along with this plain text message is sent. so if i take wireshark capture where i can see that plain text message

@sunnyclassroom24

5 жыл бұрын

you are correct. The message will also be encrypted in real life. Here we just focus on digital signature. Otherwise, it involves too much steps. Text message must be encrypted, and the receiver must de-encrypt the message first, then use the message to test if the digital signature is authentic.

Thanks much. You are good.

@sunnyclassroom24

5 жыл бұрын

Thanks a lot for your kindness.

@BrianKisomose

5 жыл бұрын

@@sunnyclassroom24 You are most welcome.

Hi sunny, in the video of digital signature you explained that one of the purpose is authentication but in this video u told it is weakness so we are using digital certificate, can you help me to understand this

I am confused sir I thought if we are using a pair of key... the receiver will create this pair of key to be given to the sender?please enlighten me. Your the best by the way.