Encryption - Symmetric Encryption vs Asymmetric Encryption - Cryptography - Practical TLS

Encryption is how data confidentiality is provided. Data before it is encrypted is referred to as Plaintext (or Cleartext) and the process of encryption turns it into Cipher text. Cipher text should be unintelligible. Only the intended recipient should have the ability to Decrypt data, which turns Cipher text back into Plaintext.
There are two strategies for Encryption: Symmetric Encryption vs Asymmetric Encryption. In this video we discuss each of their strengths and weaknesses, and provide a simple illustration of them both.
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.
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[@PracticalNetworking]

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[@sunyatalove]

🙏🙏🙏

[@gmeister3022]

My friend, I've heard many people tried to explain this, some with many years in the tech industry, but you do it so clearly that you put other explanations to shame. Thanks for this video!!

[@PracticalNetworking]

You're very welcome, friend. Glad you enjoyed this.

[@drakezen]

Easily one of the best explanations between the two types of encryption. Well done!

[@PracticalNetworking]

Thank you kindly, glad you enjoyed it!

[@solowolf5304]

@@PracticalNetworking I didn't understand the fact that private key is required to decrypt the cipher text, if that is the case then why don't u need to share this private key to the receiver ? How will a receiver decrypt the cypher text without having a private key ?

[@PracticalNetworking]

@@solowolf5304 Private Keys only exist in Asymmetric Encryption -- which features _two_ keys, a Private Key, and a Public Key. With Symmetric Encryption, there is only 1 key, and you could consider it also "Private". Try this video, see if it helps make sense of it: kzbin.info/www/bejne/lavcfKmGq81rZpo

[@KENDYJOSEPH-ef8md]

One of the best explanations between the two types of encryption. Awesome.

[@worop]

This is the best explanation of this concept I’ve seen to date. Great stuff! Thanks! The other videos in this playlist are equally helpful!

[@x0rZ15t]

The way you explained symmetric vs asymmetric encryption was simply magnificent in it's simplicity and effectiveness. Bravo!

[@RenzoCotta]

this is one of the best explanations about ssl out there .... thanks a lot

[@PracticalNetworking]

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[@e2622]

Sweet jesus, this is the best tutorial on youtube regarding the types of encryption! Thank you!

[@dustinhxc]

Fantastic explanation!!!! Thank you!

[@peterchmelar8886]

The level of clarity in your explanation is absolute :) Thanks for that

[@PracticalNetworking]

Thank you, Peter =)

[@ajayb9392]

Awesome explanation. As always you make it simpler. Thank you very much for making these contents free for us.

[@PracticalNetworking]

My pleasure, Ajay =) Enjoy!

[@Spellzzzweaver]

The cypher forwards backwards is a genius way of showing asymmetric.

[@PracticalNetworking]

Thank you =)

[@scottspa74]

I NEEDED this video so bad. In college, cybersecurity fundamentals 274, my instructor (highly regarded, consults DHS, etc) could not seem to get it thru to me, or I just couldn't get it. Sooo looking forward to this video. Thank you!

[@PracticalNetworking]

You're in for a treat next week then =). And the weeks that follow! Lot's of good stuff coming out.

[@PracticalNetworking]

Congrats! You won free access to the course! Reach out to me on Discord to claim your prize! pracnet.net/discord

[@ragemoody]

This is the third video of yours I've watched today and I'm super impressed by how good your explanations of all these topics are. So many people struggle explaining these concepts but you make it sound very easy. Again, I'm super impressed. I will make sure to share your channel whenever I can, thank you for your work!!

[@aspected]

These videos are absolutely fantastic. You explain stuff so well

[@PracticalNetworking]

Glad you like the explanation =)

[@alittax]

Man, this is BEAUTIFUL! I don't say this very often, but your explanations really are that!!! You've probably given us an insight into the minds of those people who have invented these concepts or work with them on a regular basis: I imagine that they have this clear understanding of the concepts! Bravo!

[@PracticalNetworking]

Thanks for the kind words AlittA. It's nice to hear this content is appreciated =)

[@user-cc8kb]

GREAT explanation! Thanks a lot.

[@GurkanALTAY]

Very simple and clear definition. Thanks! 💚

[@PracticalNetworking]

Thank you!

[@arishkhan8325]

Outstanding explanation .all content of this channel are mind-blowing ....thank you for making video for free of cost.

[@PracticalNetworking]

Thank you, Arish =)

[@richasharma598]

In awe of your explanation.

[@fashion_walker]

My dear , I owe you a bear on this one, I don't know what to say but you are fully gifted with the ability to transfer information, many of your courses make my world flows like a Niagara falls after trying others teaching

[@PracticalNetworking]

[@Moocow2003]

thank you! this video broke down the topic really well :)

[@rockinron5113]

Great tutorial. Thanks. 👍🏻

[@pautome461]

Great job! I'll recomend your videos to my pupils at school. Thanks

[@PracticalNetworking]

Thank you for your support, Pau =).

[@vishalrugle538]

The way you explain the concept is highly appreciated. I am commenting on this after going through your courses NAT, NAT on ASA, NAT on IOS ,CCNA Basic videos on KZbin and the one-course INE. Really looking for BGP, Security and F5-related courses from you in the future. I request other audiences to please share and encourage Ed Harmoush so that we will get quality content on a different topic. Thanks a lot Ed.

[@PracticalNetworking]

Thank you for the kind words, Vishal, and for all your support =). I hope the TLS course will free me up to put all my effort into course creation!

[@ramkowsu5295]

Awesome, I watched all outside videos but they are cipher text to me; but your videos are "clear text". Thanks for the great work. Keep up

[@PracticalNetworking]

Lol, nice! That made me chuckle. Glad you enjoyed the videos!

[@youthfull3616]

Amazing explanation. ❤

[@scottspa74]

Super excited for the next video you teased, getting more into public and private, and asymmetric. My understanding is that the primary function of asymmetric keys is to securely share the symmetric key - bit I could certainly have misunderstood (in class). And, that the private key facilitates authentication, in that, since only the sender (encryptor) of a message has their own private key to decrypt said message, that proves it was sent from their machine and that they encrypted it. I don't know if I'm right about all this. I'm sooo hoping you can touch on this in the follow up video. Thanks for the great content.

[@PracticalNetworking]

We'll be touching on all this in the next two videos, actually. But yes, you're on the right track =)

[@divyagupta3685]

So many praises from the persons from computer technology world but your explanation also made me to understand this topic while I am a layman in this world

[@PracticalNetworking]

Glad this helped you =)

[@lallu1122]

Best video i ever watched.

[@misterkevin_rs4401]

One of the best explainations on the topic.

[@PracticalNetworking]

[@TotallyNotAuroras2ndChannel]

Amazingly done

[@andriykuts1981]

the best explanations of the encryption

[@PracticalNetworking]

[@jaehyi2009]

You never disappoint! Thanks again for a great video!

[@PracticalNetworking]

You're very welcome, Jae.

[@user-vg5gn3zp2m]

THANKS

[@maciejwodecki9294]

Thank you very much for those videos, they helped me a lot to fill gaps in my knowledge.

[@maryanne2025]

Absolutely superb

[@santoshkumar-dr4qg]

Excellent explanation - I have been trying to learn SSL/TLS for the last few years but am unable to grab a basic understanding. A couple of points I would like to highlight that were observed while going through the content. > Just enough talk ( not too short or too long videos) > Each video is mostly equivalence of reading several pages of the textbooks/articles/blogs > Simple demonstrations that can be easily followed. > Animations used to lay down the foundation/concepts are very effective. > Use of simple English that can be understood by non-spoken English people like me. > Along with SSL/TLS, Basic networking concepts are also very effective for people who want to learn how networking works. > Last but not the least, author/speaker/teacher also explains international events (like Facebook outage) as an example to let other people understand the concept behind the scene. > Even though few videos are long enough but they are very engaging, you will never feel bore. So thank you once again for distributing clear and concise knowledge. God bless you.

[@PracticalNetworking]

Thanks for the thorough feedback and the kind words, Santosh. That is kind of you to say! You're very welcome, I'm so happy you've found a lot of value from this channel =)

[@wwolfram33]

This is a great lesson. Thanks Ed!

[@PracticalNetworking]

You're welcome, Ward. Glad you enjoyed it!

[@lahmeurayoub6106]

the way your break down things and make them simpler is mind blowing, thanks for sharing with us this video.

[@PracticalNetworking]

Thank you for the kind words Lahmeur. =)

[@adrianairda]

Very informative and easy to understand, thank you

[@PracticalNetworking]

You're welcome, Adrian.

[@hosseinshourabi398]

Very well explained. Thanks Ed.

[@PracticalNetworking]

You're welcome, Hosein.

[@rafay1708]

thank you Sir. I love the way you explain. Like always perfect, waiting for next Video.✌

[@PracticalNetworking]

Thanks again, Rafay =). Next video releasing Monday !

[@user-iw7wr5yk1d]

thank you very mach for best working

[@sunyatalove]

Very good explanation . Am working with symmetric and asymmetric encryption libraries in telecoms systems without knowing the internals. This video gives a really clear explanation

[@PracticalNetworking]

Glad these helped you, Kevin. If the work involves SSL/TLS in any way, I'm sure your employer would happily fund the full Practical TLS course =).

[@sunyatalove]

@@PracticalNetworking Yes i will enroll for sure

[@PracticalNetworking]

@@sunyatalove Excellent. Looking forward to having you in class =)

[@adnanfaridi]

Better than many books sold on the market.

[@lallu1122]

Great work-

[@utoobbott8817]

I have shared your video with my friends!! Excellent video!!!!!

[@PracticalNetworking]

Thank you kindly, Uto. Thank you for supporting the channel with shares =).

[@silverbell6160]

Excellent! Thank you!

[@PracticalNetworking]

You're welcome !

[@IliyaDamyanov]

This is very good video.

[@ROckOn66000]

You are amazing. May ALLAH (GOD) gives you success. You explained the complex things into simple and understandable words.

[@robertapalmert]

Thank youu!

[@NW-lj6oo]

Excellent and simple explanation.

[@PracticalNetworking]

Thank you, NW4911 =)

[@TotallyNotAuroras2ndChannel]

Nice. This is more than what I learned in my Master's cryptography course. LOL. No wonder college is nor worth it anymore.

[@haroldhale3964]

Thank you.✌🏾

[@PracticalNetworking]

[@xcelnt2000in]

Very well explained...Thanks

[@PracticalNetworking]

Glad you liked it, =)

[@realnanact]

Very informative. Keep it up.,Sir.

[@PracticalNetworking]

Will do. Glad you enjoyed it.

[@adedejiemmanuel1]

Another great video. Thank you

[@PracticalNetworking]

You're welcome, Azza =)

[@runner4102]

Thanks!

[@PracticalNetworking]

Thank you for supporting this channel, Runner. Much appreciated =)

[@randyg666]

Man this was great!!!!

[@PracticalNetworking]

Cheers, Randy!

[@NikhodeCastro]

Hi! I have something to ask, if the Symmetric Encryption called Caesar Cipher can I know what method called for Asymmetric Encryption?

[@JordanScanlon]

It will be interesting to see how quantum computing affects the industry.

[@dalao3]

You are excellent ...

[@PracticalNetworking]

Thank you for the kind words =)

[@TotallyNotAuroras2ndChannel]

Aaaah public vs private greatly explained.

[@NikhodeCastro]

Hi! I have something to ask, if the Symmetric called Caesar cipher, can I know what is called for Asymmetric?

[@a143r]

Excellent we need more videos

[@PracticalNetworking]

They're on the way =)

[@blackberry9283]

Please explain Chiper Text Expansion ?

[@Gerry_Raserole]

Nice 1....I should have been here earlier!!!

[@jonathannagy786]

At 8:07, the data is encrypted with the public key to be later decrypted with the private key. What is it that prevents someone from decrypting it with the public key?

[@PracticalNetworking]

Answered around 6:00~ -- the math features trap door algorithms which can only go one way. Knowing the public key does not let you decrypt the content back into clear text.

[@davinderkumar903]

Wow, thanks :)

[@yadgayan]

what if user use asymmetric encrypt key to decrypt pkt? or we cnt decrypt with with encrypt key?

[@PracticalNetworking]

The key itself is completely different. You won't be able to decrypt with an asymmetric key something that was encrypted with a symmetric key.

[@duggy2114]

How can we have 'h' in the cipher "khoor" when we shift forward the letters in the word hello by 3 positions for symmetric encryption? Shouldn't the result be "knqqt"?

[@PracticalNetworking]

Hrmm... how are you getting N / Q / T for the letters E / L / O? By my calculation, shifting 3 from E / L / O gets H / O / R

[@duggy2114]

@@PracticalNetworking Thanks! I misunderstood because I thought my current position will be used as a point of reference instead of the letters in the message.

[@PracticalNetworking]

@@duggy2114 There it is ;) GLad you figured it out now! Cheers, Duggy!

[@nocare3356]

Iam learning this lesson today…. KZbin algorithm is cryzy 😜

[@PracticalNetworking]

You'll enjoy the next lesson too, releasing on Monday =)

[@vanweldenpaul]

Hello, diffie-Hellman is not a asymmetric ecrypition algorithm. It is a key exchange algoritm. Paul

[@menofy22]

WDF TPD What does it mean ?

[@basmamjouel2893]

i didn't quite undertsand why not move backwards with the asymetric encryption.

[@PracticalNetworking]

Asymmetric Math uses trap door functions that can only be done in one direction. Actually, when I talked about TLS with David Bombal, I provided an example of the "can't go backwards" with Asymmetric encryption. The exact portion starts around the 12 minute mark in this video: kzbin.info/www/bejne/aGbCl6emf5Jlg6c

[@SpencerBoucher]

Nice

[@PracticalNetworking]

Thanks

[@Don-Carillo]

Thanks 😊.

[@PracticalNetworking]

You're welcome, Don!

[@prasadfalke376]

This person is god.

[@PracticalNetworking]

[@Nunesi]

👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻👏🏻❤️

[@PracticalNetworking]

[@ahmetkarakartal9563]

THANK YOU SO MUCCCHHH, I WİLL BUY YOUR COURSES IF I HAVE MONEYYYYY

[@skeletron9505]

el barto was here

[@PracticalNetworking]

Welcome, El Barto !

[@Gorlung]

Still unclear. Why an attacker couldn't take the public key (5) and decrypt the "hello" going back and not forward, ignoring the asymmetric decryption algorithm?

[@grandevalpha]

For the symetric one? The key is shouldnt be sent together with the data itsel

[@shanebutler9876]

Thanks!

[@PracticalNetworking]

Thank you for supporting the channel, Shane.

[@shanebutler9876]

It is by far the best content I have ever come across bar none in this space, keep the content coming 🤩🤩🤩

[@PracticalNetworking]

@@shanebutler9876 =) I'll do my best. If you enjoyed this video, consider the full TLS course. It's the same quality instruction covering the entire TLS ecosystem =).