Public and Private Keys - Signatures & Key Exchanges - Cryptography

Public and Private Keys - Signatures & Key Exchanges - Cryptography - Practical TLS

Рет қаралды 240,287

2 жыл бұрын

Asymmetric Encryption requires two keys: a Public key and a Private key. These keys can be used to perform Encryption and Message Signing. Encryption provides Confidentiality, and Message Signatures provides Integrity and Authentication.
This lesson is a free sample lesson from the the greatest 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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Пікірлер: 387

@PracticalNetworking 2 жыл бұрын

👉 *More free lessons:* kzfaq.info/sun/PLIFyRwBY_4bTwRX__Zn4-letrtpSj1mzY ✨ *Full course:* pracnet.net/tls 💲 *Coupon Code* for 50% off: youtube50

@felixgallardo1783 9 ай бұрын

This session was great, thank you!

@mertcancam 2 жыл бұрын

I can't thank you enough! Finally, I am beginning to truly understand all those topics that I have been struggling to grasp.

@PracticalNetworking 2 жыл бұрын

Excellent, Mustafa. Glad it's all "clicking" =)

@yiweima4412 3 ай бұрын

This is easily the most beautiful explanation video on KZfaq to date.

@shayanpz7209 2 жыл бұрын

I watched different videos on KZfaq to understand this concept and no one else explained this as good as you did! Great job 👏🏼

@PracticalNetworking 2 жыл бұрын

Thank you, Shayan. Glad this helped =)

@rogermcnulty887 Жыл бұрын

I’m 38 years old and a newer IT professional after switching careers. I just recently earned my BS degree in IT and got hired at a major defense company. I’m watching these types of videos for better understanding of specific types of concepts covered in Security+. Also I’ve been personally using technology since the days of original Oregon Trail as a hobby. As my first ever KZfaq comment: These videos are fantastic videos. You deserve way more subscribers than you have. Fantastic explanations man. Bravo.

@PracticalNetworking Жыл бұрын

Hi Roger! Thank you so much for the kind note, I'm honored to be the recipient of your first KZfaq comment. =). Hope things are going well at the defense company =). Let me know if your team would benefit from in person training, I'd be happy to oblige. =)

@lawrenceonlineshop7040 Жыл бұрын

Good Teacher! Very rare to see someone taking difficult concepts and making it simple for others to understand better.

@aditisinghpal1116 9 ай бұрын

I am a Law Student and was finding it difficult to understand the certain concepts of Information Technoloagy law involving core aspects of cybersecurity. This video simplified everything and explained articulately. Thank you to the author!

@peterchmelar8886 2 жыл бұрын

Another gem :) Thank you for the uploads Ed. Every video is packed with useful knowledge.

@PracticalNetworking 2 жыл бұрын

Thank you, Peter. Glad you're enjoying all of these =)

@karamjeetpadam4719 8 ай бұрын

this is the most practical explanation of cyryptography in the entire KZfaq.... thanks for such a simplified explanation!!

@santoshkumar-dr4qg 2 жыл бұрын

Again, I am amazed about the nitty gritty details this video is providing. The author starts with basic concept and take it to another level once the basic is done. This increases our horizon in which the techniques can be used. Well done.

@PracticalNetworking 2 жыл бұрын

Thank you, Santosh =) Glad you liked this video!

@bentabarzadi3379 Жыл бұрын

I have never comment for any video EVER! but you are amazing! Simple, short and sweet! THANK YOU SO MUCH! WOW!

@lallu1122 Жыл бұрын

Super work - probably the best SSL videos on KZfaq.

@rkveluvali 10 ай бұрын

I can't thank you enough for the detailed explanations, providing necessary intricate details in a lucid and understandable way.... 🙇

@privatesocialhandle Жыл бұрын

My god, I can't believe I had to search so long for a video that makes sense for beginners. Subscribed.

@rob651 Жыл бұрын

I have taken many tutorials online, watched many educational videos but your tutorial is so different. You are a great teacher sir. I dont understand how but the topic is explained in depth and at the same time in a very brief and concise way. Thank you very much! Keep up the good work!

@bitfluent 11 ай бұрын

Concise, simple, and visual. Great video!

@mistershirokov5067 Жыл бұрын

You are a great tutor and you’ve just got a subscriber, good sir. I’ve read tens of articles about ASE and this video is way better than any of them combined (although some were more about the actual functions than the general idea)

@roytitas 8 ай бұрын

Thank you for explaining each topic with such clarity! This is very very helpful.

@martinmokran6324 2 жыл бұрын

Another great video in Practical TLS series! Thank you.

@PracticalNetworking 2 жыл бұрын

Thank you, Martin. Glad you enjoyed it!

@helena8918 Жыл бұрын

Best video yet, BY FAR. All well explained, and following all the principals that we should have in count when learning encryption and informatic security.

@alistairbarros8192 2 ай бұрын

The best explanation and video I've seen on secure communications using asymmetric and symmetric keys, the illustrations and pacing of explanations are exemplary!

@rockystark9539 2 жыл бұрын

Incredible performance, man needs a solid understanding of encryption to explain it in such a way. Well done.

@PracticalNetworking 2 жыл бұрын

Glad you enjoyed it =).

@AtharvBogra 10 ай бұрын

This video is awesome in explaining this concept and how hashing and encryption come together in PKI as this was what Ive been struggling to grasp in terms of the complete image! Awesome job.

@adityae83 Жыл бұрын

You explain really well, after going through few videos and still not grasping the concept your video and explanation helped me understand this concept well. Thank you for this video.

@mmdbx 2 жыл бұрын

The way you explain things uses the right level of simplification, to facilitate understanding, but doesn't get lost in the details. Thanks for your great work, much appreciated! (I always had challanges to understand the difference between the concept of signatures vs. bulk encryption, but this visualization of yours, with the explanation helped a lot!)

@PracticalNetworking 2 жыл бұрын

Glad this helped make it click. Thanks for the kind words, Gergely =)

@rpinto8800 2 жыл бұрын

Thanks again for making this available to us, just finished the playlist enjoyed it, well explained.

@PracticalNetworking 2 жыл бұрын

Glad you've enjoyed it! Next video releases Monday =)

@tony_0088 Жыл бұрын

This video is awesome, congratulations guys! You explain complex topics in a very simple, elegant and didactic way.

@PracticalNetworking Жыл бұрын

Glad you enjoyed it, Tony =). I'm sure you'll enjoy the rest of the Crypto series: kzfaq.info/sun/PLIFyRwBY_4bTwRX__Zn4-letrtpSj1mzY

@encryptionforbeginners96 Жыл бұрын

Thanks for the great video. I found the factors P and Q for the number 1909: P=23, Q=83. To do this, I used the "Quadratisches Sieb" factorization procedure, which operates as follows: First I calculate the square root of 1909 which gives the value "43.69". After that I set the factors P = 43 and Q = 44. Now the calculations follow. If I calculate P*Q (43*44), then this results in "1892". Since this value is smaller than "1909" I increase Q by one -> Q=45. Now I calculate again the product P*Q (43*45) -> "1935". The value is now greater than "1909", so I decrease P by the value 1 -> P=42. I follow these rules until the value 1909 is calculated. Summary: - P*Q (43*44) -> 1892 < 1909 -> Q+1 (45) - P*Q (43*45) -> 1935 > 1909 -> P-1 (42) - P*Q (42*45) -> 1890 < 1909 -> Q+1 (46) - P*Q (42*46) -> 1932 > 1909 -> P-1 (41) ..... - P*Q (23*83) -> 1909 = 1909 I hope this is helpful.

@PracticalNetworking Жыл бұрын

Great write up! This proves 2 things: 1. Any key can be solved via brute force 2. Brute force doesn't necessarily require trying _every_ possibility, there are shortcuts you can take as you did =) Going to pin your post, to bring more attention to your write up and hopefully your channel. Good stuff!

@encryptionforbeginners96 Жыл бұрын

@@PracticalNetworking Thank you for pinning. The great thing about the algorithm is also that this can be divided into several threads very well. So you could crack your RSA-1024 key on a graphics card quickly :-)!

@PracticalNetworking Жыл бұрын

@@encryptionforbeginners96 The difficulty scales exponentially as the key size increases. To date the 1024 bit "RSA Number" factorization challenge has yet to be solved. en.wikipedia.org/wiki/RSA_Factoring_Challenge en.wikipedia.org/wiki/RSA_numbers#RSA-1024

@scottspa74 Жыл бұрын

Ummm you're sort of a genius

@danialranjbar9805 Жыл бұрын

Thank you for your time and effort for sharing us all this knowledge for free.

@north4220 Ай бұрын

honestly i wish you happiness , i was struggling to get a grasp on this subject , you explained it in a wonderful way thank you !

@tomnguyen1015 Жыл бұрын

FINALLY sometime who actually understand and know how to explain things PROPERLY

@IliyaDamyanov 9 ай бұрын

This is the best video in the internet explaining this topic.

@kaykay02120 4 ай бұрын

no words to explain. excellent series

@terjidjurhuus1917 8 ай бұрын

In a few minutes you managed to simply explain what hours of other videos managed to complicate. Thanks!

@ChaoticBeing-yj3ij 5 ай бұрын

I was legit mind blown after seeing this video wonderful explanation

@vmkkannan Жыл бұрын

the content you explain is in order and clear to the subject... easily understandable...

@rafay1708 2 жыл бұрын

You always know how to make life brighter for everyone you know. Thank you so much for spending your Golden time to make such useful Video. these Keys are not easy to understand and to explain but you make it so much easy to understand. Thanks, waiting for your next Video. ✌

@PracticalNetworking 2 жыл бұрын

Thank you for the kind words, Rafay. Glad you're enjoying this content =)

@scottspa74 Жыл бұрын

Ed, you are absolutely the BEST!. I'm finishing a 2 year degree at Edmonds and feel like I've learned little (all during covid, virtual) and frequently refer back to your amazing instruction. You def have the calling of a professor (not to mention your obvious chops as an engineer).

@PracticalNetworking Жыл бұрын

@fuadyhidayat Жыл бұрын

What a great explanation. Finally it all make sense. Thank you for providing this video. Really really helpful.

@PracticalNetworking Жыл бұрын

Cheers Fuady =) Glad it helped! Thanks for the kind words.

@Scottpie47 Жыл бұрын

Omg FINALLY an explanation of public/private keys that made perfect sense to me!! Thank you!!

@PracticalNetworking Жыл бұрын

Glad this one helped, Scott =). You're very welcome.

@sgwong513 Жыл бұрын

agree, this is the best video series explain how the ssl/tls and encryption works.

@pinoyheartbeat7245 7 ай бұрын

I am currently enrolled in Cisco's cybersecurity course and I always look at this particular video whenever I get symmetric and asymmetric and public and private keys confused with one another. Very very good tutorial.

@chukwukauba2417 7 ай бұрын

You have really simplified this mystery for me. Thank you!

@jeffchen86 2 жыл бұрын

Thanks bro！I struggled a lot to find out this stuff,but you help me a lot just in a few minutes!You are so amazing!

@PracticalNetworking 2 жыл бұрын

Excellent Jeff! Glad it makes sense now. Cheers!

@renansantos8727 6 ай бұрын

Thanks, saved my life with such clear explanation

@MultiBob1010 2 жыл бұрын

Thank you so much, you made my day, I've been reading bunch of articles about it, there was unclear idea to me (which I can use the private key to encrypt the data and use the public one for decypt) by your video you made the pic clear to me

@PracticalNetworking 2 жыл бұрын

Wohoo! Glad I could help. Glad it makes sense now =)

@gangstaberry2496 Ай бұрын

Thanks for the video... This explanation is a lot clearer than the one I saw in class

@alan29115 2 жыл бұрын

So many explanations go right over the actual essence of how these keys interact to encrypt and decrypt. Almost as if they don't even know it themselves, just regurgitating shit from a textbook. THANK YOU

@PracticalNetworking 2 жыл бұрын

You're welcome, Alan =). I too agree I've heard many people attempt to explain this by simply regurgitating what others have said... agreed 100% =).

@digitaldrive1192 2 жыл бұрын

Very nice. Concise, clear with simple and effective animated diagrams. Not sure if it gets any better than this.

@PracticalNetworking 2 жыл бұрын

Glad you liked it! =)

@cevuwolf3077 2 жыл бұрын

I agree with Mustafa Mertcan CAM ,finally someone explained the proper way.Thanks a lot :D

@PracticalNetworking 2 жыл бұрын

;) Thanks for the kind words.

@hasanalmuazzaz4678 Жыл бұрын

thanks, no one else explained this as good as you did.

@zs8850 4 ай бұрын

Absolutely brilliant content! Thank you for taking the time to create this!

@PracticalNetworking 4 ай бұрын

You're very welcome. Glad you enjoyed it.

@paolonervi2208 2 жыл бұрын

Your videos are really super useful and interesting.thank you for the time you dedicate in making these contents.greetings from Italy.Paul.

@PracticalNetworking 2 жыл бұрын

Hi Paolo! Glad you enjoyed them! Thank you for the kind words. Cheers!

@markmanzo2488 Жыл бұрын

New sub here. I'm studying for the A+ after getting the Google IT Support Professional cert, and ran across your channel. It's really helping me fill in the gaps on some big topics I was confused on, and helping me understand more of the basics so I can in turn understand some of the more advanced stuff for the Network+ and Security+. I seem to be learning these concepts the way you are teaching them. Thank you.

@yulanluo7328 4 ай бұрын

Every clear and easy to understand, thanks for sharing!

@atulsurjuse2916 Жыл бұрын

This is one of the best explanation of the difficult subject.I was struggling to understand the base of this topic..Now it's cleared.Thank you very much..!!

@_bryanquinto Жыл бұрын

clearest explanation ive watched. thanks!

@epicuros_ Жыл бұрын

Excellent explanation!! Thank you very much!!

@bill0cao 9 ай бұрын

Thanks for this great lesson which very clearly explains the topic!

@po6577 Жыл бұрын

Best explaination I had seen out there! Thanks!

@tusharludhrani8059 7 ай бұрын

this was the most amazing explaination ive ever heard!!!! thankyou sooooooo muchhhh

@uttpalkant957 11 ай бұрын

Just wow, u explained everything so well

@fishfanaticgokul4758 7 ай бұрын

Most valuable video i have seen in this year 🎉🎉🎉🎉 am really astonished ❤

@thecyberguard426 10 ай бұрын

o one else explained this as good as you did! Great job 👏🏼

@Frack_Black 2 жыл бұрын

This channel has become my go to for catching up on stuff I haven't, previously, fully understood. The simple breakdown of the subject matter makes for easier digestion. 👏👏

@PracticalNetworking 2 жыл бұрын

Welcome, Frack =). Glad you're enjoying this content and how I present it!

@PracticalNetworking 2 жыл бұрын

Congratulations, you won the giveaway. Message me on discord to claim your prize -- pracnet.net/discord

@Frack_Black 2 жыл бұрын

@@PracticalNetworking lovely, thank you. Will pm later.

@Frack_Black 2 жыл бұрын

Thanks for the course. 😀

@momo8718 2 жыл бұрын

I am currently reading a book on cryptography and hash functions and this is a really good illustration. Well done!

@PracticalNetworking 2 жыл бұрын

Thank you, momo. =)

@blackbarry45 9 ай бұрын

the series are awesome! Thank you for your content

@PracticalNetworking 8 ай бұрын

You're very welcome. Thank you for supporting the channel !

@captainsloth5895 7 ай бұрын

This video is fantastic. Thank you.

@southern_smacker Жыл бұрын

I first tried to study Public and Private keys encryption back in 2002 after passing my Java 2 certification, but could not understand the concept. I then kept struggling with understanding how encryption and SSL/TLS works. Today this mystery is solved forever. I would like to thank the creator of this wonderful course.

@hosseinshourabi398 2 жыл бұрын

Woooooooonderful. I am amazed about deep details this video is providing. Well Done, Thank you so much!

@PracticalNetworking 2 жыл бұрын

Glad you enjoyed it, Hosein =) You're very welcome.

@leagueoflags Жыл бұрын

Thank you, thank you, thank you! I finally got how it all works!

@AnantaAkash.Podder Жыл бұрын

This is the BESTTT lecture to Public & Private key & how TLS works... Thanks a Lot Man 😊❤️😊

@DG-fs1pq 2 жыл бұрын

I say this about each of your videos, but seriously....You are the best teacher when it comes to this material!!! I finally understand this clearly.

@PracticalNetworking 2 жыл бұрын

Thank you, David. Glad you are enjoying this content =). If you are willing... could you do me a favor? Do you mind sharing these videos on Linked In, Reddit, Twitter, Facebook, or any other social media you use? As an independent creator, that would be an _enormous_ help, and I would appreciate it _greatly_ .

@DG-fs1pq 2 жыл бұрын

@@PracticalNetworking I share it quite often. Thanks.

@PracticalNetworking 2 жыл бұрын

@@DG-fs1pq In that case, *Thank you **_very_** much for your support.* Much appreciated

@sush_utagi Жыл бұрын

Thanks for the great explanation my man!

@OzyMandias359 9 күн бұрын

Excellent lesson, thank you very much!

@alexl2512 Жыл бұрын

Thank you so much for your explanation. It is very clear and accurate. 🎉🎉🎉

@rajeshrama86 Жыл бұрын

The best explanation I came across after a lot of reading.................Thanks a lot sir

@cassiuscramos 2 ай бұрын

Great lesson! Very clear.

@LuvxJacqu4li8e 8 ай бұрын

Amazingly done again: using Pam's public key to encrypt so she alone can open it with her private key. Wow!!!

@OscarPerez-ox8sq 2 ай бұрын

So far best explaination seen on internet.

@fab5749 Жыл бұрын

This is by far the best explanation on this topic

@PracticalNetworking Жыл бұрын

Agreed =)

@nidhisharma3578 6 ай бұрын

Thank you for making it so easy to understand 🙏

@PracticalNetworking 6 ай бұрын

You’re welcome 😊

@kartiknit1 2 жыл бұрын

Excellent video, finally understood these concepts!

@PracticalNetworking 2 жыл бұрын

Glad to hear, Karthik =). Cheers!

@tihomirvachkov3941 11 ай бұрын

Eurica! Finally I got it !!!!!! Thank you very much dude !!!!!

@trino4965 2 ай бұрын

Thanks for making understand easy what I couldn't understand for years

@ImageNxt 10 ай бұрын

Very good clear explanation. Thanks.

@kaidjohardudhiawala2549 Жыл бұрын

superbly explained

@wwolfram33 2 жыл бұрын

Another great lesson. Actually, this is fantastic! Thanks!

@PracticalNetworking 2 жыл бұрын

Thanks Ward =). Cheers!

@blankblank1273 Жыл бұрын

Perfect explanation. Thanks so much

@chittlingwhittles1198 Жыл бұрын

Thanks for all of this. Superb content and presentation! Does anyone else feel guilty when you forget to like a video as you’re gobbling this stuff up?

@golus4963 2 жыл бұрын

Appreciated and thanks to you for sharing the typical things into easy way....

@PracticalNetworking 2 жыл бұрын

You're welcome, Golu.

@yijingmeng 15 күн бұрын

Thanks for the great video. Really clear and good explaination.... I just need to come back and watch it several more times to make sure I grasp all the details!!!! Mind explosion now, haha!

@arashmahari9570 4 ай бұрын

Thanks, a lot. A great video.

@jugjiwanseewooruttun7198 Жыл бұрын

Great explanation! Thank you.

@PracticalNetworking Жыл бұрын

You're welcome, Jugjiwan!

@Neaks5295 Жыл бұрын

Solid solid SOLIDDDD video. Thanks !!!

@adryelgainza1686 2 жыл бұрын

Man you are simply a blessing

@PracticalNetworking 2 жыл бұрын

@prasadpulaguntla9255 4 ай бұрын

The best video to understand how JWT works (although jwt is not explicitly discussed in the video). Can't thank you enough for such a clear and simple explanation!!

@prasadpulaguntla9255 4 ай бұрын

I meant how JWT signatures work

@PracticalNetworking 4 ай бұрын

Thank you for the kind words, and thank you for supporting the channel =).

@duygutmr 2 жыл бұрын

Amazing instructor! Thanks! 😍

@PracticalNetworking 2 жыл бұрын

Thank you =). Glad you enjoyed it!

@szilardfineascovasa6144 3 ай бұрын

Boy, this video indeed demonstrated the mission of the channel as stated: hitting that sweet spot between basic and too complex. I often find myself frustrated right in that "Twilight Zone", googling and switching between articles and videos (only to become more frustrated). As someone else was saying, this made JWT make sense as well...after reading through stuff that was starting nicely, bulding up nicely, only to then muddy the waters in an epico style 😁. Was tempted for the first time to read the RFC. Bookmarked, subscribed, and will certainly chek the other videos. Thanks!

@PracticalNetworking 3 ай бұрын

Thank you for the kind words! Glad you enjoyed this series. Thank you for supporting the channel =)