Asymmetric Encryption - Simply explained

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  • Опубліковано 29 жов 2017
  • How does public-key cryptography work? What is a private key and a public key? Why is asymmetric encryption different from symmetric encryption? I'll explain all of these in plain English!
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  • Наука та технологія

КОМЕНТАРІ • 833

  • @johnathonbatz662
    @johnathonbatz662 2 роки тому +47

    the mailbox analogy of everyone knowin the address of the mailbox being the public key, and only the mailbox owner with the keys to his own mailbox as the private key, is a really really really well done analogy. probably the best one ive seen so far with relating public/private keys as a concept to everyday life and making it easier to understand.

  • @mjk012579
    @mjk012579 3 роки тому +313

    Very clear and straightforward. I’ve been beating myself over the head with this topic in my fundamentals class and this just made the differences make a whole lot more sense

  • @SannySinghs
    @SannySinghs 6 років тому +287

    LoL 221b BakerStreet . I have been trying to understand Asymmetric encryption concept for nearly 3 hours. None of the clips i watch explained as clearly as you do about exchanging public key. Well done. Thank you so much

    • @simplyexplained
      @simplyexplained  6 років тому +19

      You're the first one who noticed the address! Thanks for the kind words ;)

    • @JonathanCoffey1087
      @JonathanCoffey1087 6 років тому +14

      Same here, this idea helped me a little. Since most of these videos keep mentioning TONS of keys, why not use a lock analogy? We generate a key pair, one public and one private. Think of the public key as the unique "lock" you've just made. You can give that lock to as many friends as you want. If you send me your lock, I can put anything in a box and put your lock on it. Once secured with your custom lock, I can no longer open or see the contents of that box without your key that's paired with that lock.

    • @juancamilo1370
      @juancamilo1370 5 років тому +6

      everyone talks about keys here and there but nobody mention the interchange step... good explanation!

    • @teddyboggs1851
      @teddyboggs1851 5 років тому +3

      As an American I can honestly say 221 baker is literally the only address I know in that entire country.

    • @TheVirumXD
      @TheVirumXD 5 років тому +1

      Teddy Boggs Sherlock

  • @kairollmann
    @kairollmann 6 років тому +764

    And the next important thing to understand is: Asymmetric encryption algorithms take WAY longer than symmetric encryption algorithms. So people 1) use symmetric encryption to encrypt LARGE amounts of data / files, 2) encrypt the symmetric key with asymmetric encryption and 3) send that (asymmetrically) encrypted symmetric key together with the (symmetrically) encrypted file.

    • @simplyexplained
      @simplyexplained  6 років тому +115

      +Kai Rollmann jep, 100% true. Should've added that to the video.

    • @Markd315
      @Markd315 5 років тому +20

      And after that, probably how RSA can also be used to sign and verify data integrity.

    • @lallu1122
      @lallu1122 5 років тому +13

      I never thought about it! Great!!

    • @sivasankarclouddeveloper1114
      @sivasankarclouddeveloper1114 5 років тому +5

      Thank you Kai Rollmann

    • @uayfb1
      @uayfb1 4 роки тому +1

      I believe that is how Pretty Good Privacy works.

  • @scienceblossom6197
    @scienceblossom6197 5 років тому +8

    It used to be super complicated for me but even watching this awesome video up to 02:16 helped me understand how public/private keys work in general and now it makes TOTAL sense. THANKS!

  • @alvfig
    @alvfig 6 років тому +49

    Great introduction, even for non-technical people. Thanks a lot! I'd love if you could make a similar video to digital signature.

  • @ACEofMCB
    @ACEofMCB 6 років тому +22

    Awesome explanation and graphics for a visual understanding. I was looking for something simple to show friends and family and you've covered it better than I ever could, thank you!

  • @aditi3112
    @aditi3112 5 років тому +6

    Wow..how clearly & beautifully explained. From a long -long time, I was highly confused why 2 keys in asymmetric encryption...never been able to understand...but your explanation made it clear completely. Tons of thanks to you :)

  • @supadupaforever
    @supadupaforever 6 років тому +14

    Thanks for keeping it simple, yet intriguingly educational for a layman curious as to how this technology works in the World Wide Web. Much appreciated sir!

  • @OHTV2016
    @OHTV2016 6 років тому +23

    Excellent video, I’ve been watching many videos about this topic and you’re the only one who I actually understood from. Wonderful Job ❤️

  • @drabberfrog
    @drabberfrog 14 днів тому +1

    This is the first time I actually understood this after watching many videos about it. Thx

  • @RM_1964
    @RM_1964 5 років тому +2

    Man you explained it in so much simple manner. I don't even need to note it anywhere. It was like a story that's in my head. Thanks a lot sir.

  • @lakerfan4life308
    @lakerfan4life308 Рік тому

    Excellent explanation on asymmetric encryption. I was uncertain on how could the encryption of locking/unlocking the data worked since the private key never crossed the wire. You introduced and delivered that difficult concept in an easy relatable manner. Thank you for that! Best video ever. I now feel more confident about asymmetric encryption.

  • @anirudhpathak2559
    @anirudhpathak2559 5 років тому +9

    The best and clearest description of public-private key cryptography I have seen so far!

  • @Nawdiral
    @Nawdiral 6 років тому +50

    The key words here I was really looking for since a while are: "...algorithm will generate a public and private key that are mathematically linked to each othere. Public keys can be used to encrypt data and only the matching private key can be used to decrypt it.".

    • @futuresocieties.
      @futuresocieties. 5 років тому

      High levels of security with mathematics.

    • @futuresocieties.
      @futuresocieties. 5 років тому

      Mathematics that provide high levels of security.

    • @JayLim-bn9fh
      @JayLim-bn9fh 3 роки тому

      Holy lil fuck! Thanks!

    • @TheGadgetwiz
      @TheGadgetwiz 3 роки тому +6

      This kind of irritated me because this was the reason I was watching the video. I wanted to know HOW that part worked. I already knew all the other pieces.

    • @penguin-tc1cx
      @penguin-tc1cx 3 роки тому

      @@TheGadgetwiz this channel and video is called "simply explained" for a reason... if you want to learn the more complex process behind it, you should do research or watch other videos. don't complain lmao

  • @sabrinemaiz234
    @sabrinemaiz234 5 років тому

    its awesome how u explain thank you a lot, its beeing one year trying to unterstand this complex IT Security,but i couldnt with all videos in Internet. u just explain it in few minuts and i didnt need to repeat the video thausend time, thank you a lot for your hard work

  • @marriagedance8657
    @marriagedance8657 6 років тому +13

    You deserve so much more subscribers.. Hats off

  • @phanurutpeammetta2066
    @phanurutpeammetta2066 Рік тому

    After watching so many videos about encryption, this is the first one that makes sense to me. Thanks for the simple explanation and beautiful illustration!

  • @tmyh
    @tmyh 6 років тому +3

    Great presentation, you make it easier to figure this new tech for a no-tech person. Keep the blockchain videos coming mate.

  • @Yell3x
    @Yell3x Рік тому

    Thank you so much! This really answered all my remaining questions, just got taught it and asked things like, why would it be public when you can reverse the process and etc. That mailbox example really did it for me!

  • @mkc0321
    @mkc0321 3 роки тому

    excellent video, i had so much confusion with private and public key stuff ..you explained it so beautifully..your channel deserve the title

  • @MEME-re5jl
    @MEME-re5jl Рік тому +1

    Thank you this is my first comment in the UA-cam you deserve it. Thank you.

  • @user-uf6fs2rn6s
    @user-uf6fs2rn6s 2 роки тому

    This really helped loud, clear and straight to the point!!! Thank you so much

  • @briannawooden411
    @briannawooden411 5 місяців тому

    Best explanation of this concept I have come across so far. Thanks!!

  • @lilcoconut3116
    @lilcoconut3116 3 роки тому +1

    Thanks man... I watched a lot of videos but was not able to clearly understand the exact concept, then I came across your video and yoo!! I understand the concept in no time... Thank you so much 😇😊

  • @aparnaiyer1199
    @aparnaiyer1199 Місяць тому

    Straight to the point ! Gives good groundwork to take this forward!

  • @falmanna
    @falmanna 6 років тому +338

    Very nice and clear presentation

  • @brolysmash9333
    @brolysmash9333 Рік тому

    Omg, dude, this was so straightforward; thank you very much. Cryptography is one of those areas that blows my mind, and today I understood it with a simple video of you.

  • @N3vermake
    @N3vermake 3 роки тому

    Thanks, you summed up a 2h lecture in 4 minutes. Lovely!

  • @theblueraven764
    @theblueraven764 Рік тому

    Brilliant explanation, thanks! I've been wracking my head over this for ages and then I saw this video. It makes way more sense now!

  • @emufandango
    @emufandango 5 років тому +2

    You’ve got my sub! Thanks for the video, as I’ve been trying to understand this for quite a while, and no one else has been able to explain it to me. Simply put, Alice is encrypting the file in a way that only Bob can understand, and vice versa.

  • @AbhijitChandekar
    @AbhijitChandekar 4 роки тому +1

    This is the best video on public key encryption. What i found was that, many other videos does not mention the fact that the public keys are exchanged between the two parties. Thank you to the maker of this video!!!

  • @buzztrucker
    @buzztrucker 9 місяців тому

    Short, sweet, and to the point. Thanks for this great info condensed in short amount of time.

  • @chenbiton9469
    @chenbiton9469 5 років тому +3

    Really clarified this topic for me. Thank you for this video!

  • @zokir.finance
    @zokir.finance 2 роки тому

    Thank GOD, finally I understood the concept, after days of research, this video and youtube channel should be on top))) Simplicity is genious.
    Thank you so much.

  • @AmirAli-gv7kn
    @AmirAli-gv7kn 4 роки тому +3

    Thank you. Watching mins before next lecture so that I stay aligned

  • @fotoMwahine
    @fotoMwahine 2 роки тому +4

    Thank you so much for this easy to understand explanation. Studying cybersecurity and symmetric/asymmetric encryption; this is right on time. Excellent!

  • @mosespeter9711
    @mosespeter9711 Рік тому

    The is the best video on internet for this topic. Thanks a bunch!

  • @anandarivu
    @anandarivu 6 років тому +2

    This is the best video to understand the algorithm. I was always amused at how ssh works with keys. No one ever showed the exchange of public keys.
    Thanks a lot for the video.

  • @MegaKalkas
    @MegaKalkas 6 років тому +9

    You should also mention that encryption works in the other way too. An encrypted message with a private key can be decrypted only by the paired public key and this insures that the sender (or whoever encrypted the message) is indeed trusted.

  • @user-ps3zo7ux1e
    @user-ps3zo7ux1e 6 місяців тому

    the only video that explained it properlly, thank you very much!

  • @mailinlindved6214
    @mailinlindved6214 5 років тому

    Very pedagogically explain. Thanks, keep up the good work!

  • @mr2_pg
    @mr2_pg Рік тому +1

    Thank you so much for this helpful video. You're communication and explanation skills are on point!

  • @mrlima2953
    @mrlima2953 2 роки тому

    Excellent video. The most well explained I have found so far on the internet!

  • @carcamp5451
    @carcamp5451 5 місяців тому

    Damn. I understood after trying to understand for months. You're a life saver. Thanks for your amazing work.

  • @codecleric4972
    @codecleric4972 Рік тому

    This is probably the best explanation of this on UA-cam

  • @UnowknKlol
    @UnowknKlol 2 місяці тому

    Good content! the explanation is very easy to understand. I hope all concepts in this world has videos that explained them as good as this.

  • @ernestgrouns8710
    @ernestgrouns8710 2 роки тому +1

    Thank you for explaining this in a way that now makes sense to me!! Much appreciated!!

  • @francis191
    @francis191 2 роки тому

    Clear and concise. To the point with great graphical representation.

  • @Ahmad-iu8dq
    @Ahmad-iu8dq 29 днів тому

    The mailbox analogy is a state of the art. Well done!

  • @benny.6588
    @benny.6588 2 роки тому

    Excellent, this kind of analogies, depicts better the problem for being understood, as the coffer or something like it, than a plain explanation declaring rules and results, because is better mentally thought in mind...beyond and respecting the math matter that is another more complex and low lever discussion. i love this class of analogy when is well applied. thanks for the video

  • @Tamilkaraokevideos
    @Tamilkaraokevideos 2 роки тому +1

    The mailbox example nailed it.. Thanks for the ghaphics and explanation.

  • @eraykacmaz
    @eraykacmaz 5 років тому

    The only video that help me to understand the topic really well. "Mathematically linked with each other..." is the key phrase of understanding. Thanks for video.

  • @Notaraehs
    @Notaraehs 6 років тому +5

    Your channel is amazing. Keep them coming!

  • @kisme01
    @kisme01 5 років тому +2

    thank you. finally someone who can explain

  • @iCortex1
    @iCortex1 2 місяці тому +1

    This took years for my brain to click, it's hard to grasp when you don't have much experience (IE still in school) - but it all makes sense now :) If you're struggling with this concept don't give up, it finally clicked for me after revisiting the subject once in a while

  • @fatinistiaque5892
    @fatinistiaque5892 Рік тому +1

    This solved my confusion very easily. Great presentation

  • @eyewaves...
    @eyewaves... 2 роки тому

    Watched some of your videos - they are really cool, informative and accurate enough. Great job and thank you.

  • @xuanhoahoang6959
    @xuanhoahoang6959 2 роки тому

    Really nice vid, clear and straight forward with a non-IT person like me. Thank you very much

  • @cryptocosmos7128
    @cryptocosmos7128 5 років тому

    You have definitely lived up to your channel name with this one. Nice work.

  • @lesleykramer7207
    @lesleykramer7207 5 років тому +7

    Finally! I understand this! Thanks for a clear, simple explanation.

  • @naeemlhrpk
    @naeemlhrpk 23 дні тому

    It's really funny that I went through many short video but none was found an easy way to understand this concept.
    This video and the analogy of mailbox messaging made the concept more easy to understand. Thanks

  • @ecommercetechbuild1354
    @ecommercetechbuild1354 Рік тому

    Simple and clean explanation. Kudos to you

  • @diegoguzman4631
    @diegoguzman4631 5 років тому +16

    I was able to understand how asymmetric encryption works in just 4:40 mins! Thanks a lot!!!

    • @happyboy2323
      @happyboy2323 3 роки тому

      Just what is it, not how it works

  • @ttaylor705
    @ttaylor705 5 місяців тому

    Simply explained! I really enjoyed the video. Thanks for this.

  • @marcinsola4179
    @marcinsola4179 6 років тому +3

    Great job! I'm just going through Bitcoin's whitepaper and this video helped me a lot with understanding the mechanism behind bitcoin transactions. Thank you!

  • @godlychild7925
    @godlychild7925 5 років тому

    Fantastically explained! Thank you.

  • @moredigitalyou
    @moredigitalyou 2 роки тому

    great video, thanks! the best explainer videos like this one take a complex topic and simplify it

  • @mehul1458h
    @mehul1458h 3 роки тому

    that's very smooth explain of asymmetric encryption.
    I have read many paragraph to learn that but i didn't understand.
    very heplfull. thanks for that

  • @incomparable642
    @incomparable642 6 років тому

    Finally a video that explains it correctly and super clearly.

  • @Karen-jj9xe
    @Karen-jj9xe 11 місяців тому

    Excellent explanation - greatly appreciated!

  • @joehaynes6829
    @joehaynes6829 5 років тому

    Watched three videos on symmetrical Encryption , only this one made sense to me , good video

  • @krishnabala8403
    @krishnabala8403 Місяць тому

    Brilliantly, simply explained!

  • @jamarama2242
    @jamarama2242 2 роки тому

    Finally Understand it. Thanks man!

  • @kaushal4nanda867
    @kaushal4nanda867 5 років тому

    Best and simple explanation.. Thank you

  • @theartofhacking6896
    @theartofhacking6896 2 роки тому +10

    I was always struggling to grasp the concept of asymmetric keys but now, within only 4:40 mins it became crystal clear. Keep it up. :)

    • @brd8764
      @brd8764 Рік тому

      rightly and it is prosper.

  • @abelashenafi6291
    @abelashenafi6291 4 роки тому +1

    Video truly worth watching. Thanks for the vivid explanation

  • @saar331
    @saar331 5 років тому

    Perfect explanation, better than my lecturer and now I got the idea clear.

  • @gpardhu
    @gpardhu Рік тому

    blessed are the souls who impart such valuable information for free

  • @kishcool
    @kishcool 2 роки тому +2

    Great explanation. It would be great to see you explain how you can be sure that you’re using the Alice (or bob) public key and not an attacker public key who would be in the middle.

  • @user-np5ig1pn1o
    @user-np5ig1pn1o Рік тому +1

    sweet and simple , just what i needed , thanks a ton

  • @keithfreeman2139
    @keithfreeman2139 3 роки тому

    I have a Cyber-Security Test coming up Tuesday. These videos have helped me a lot. Thank you.

  • @catharperfect7036
    @catharperfect7036 Рік тому

    Best explanation of this on youtube.

  • @joshvanathan1000
    @joshvanathan1000 4 роки тому

    Perfect explain !! Thank you for your effort

  • @MrRahulKumarKandula
    @MrRahulKumarKandula 5 років тому

    You cleared my confusion. Thanks a ton. Good presentation too.

  • @vivianw7363
    @vivianw7363 6 років тому

    Good job! Very straightforward.

  • @samuelodell5215
    @samuelodell5215 5 років тому +3

    So helpful, thanks!

  • @beatboxerme
    @beatboxerme 4 роки тому

    This the best explanation. Superb!!!

  • @anshumanbaruah4161
    @anshumanbaruah4161 6 місяців тому

    Beautifully explained. Thanks!
    I now have a better understanding.

  • @GrantClementi
    @GrantClementi 9 місяців тому

    Beautifully put, thank you.

  • @penguinmonk7661
    @penguinmonk7661 4 роки тому

    Thank you, this was a very good refresher and a great example to share with students.

  • @barbi111
    @barbi111 5 років тому

    Very good and clear explanation, thank you!

  • @pranavchebolu7961
    @pranavchebolu7961 5 років тому

    This video really helps explain this concept. Awesome presentation

  • @IbrahimMohammad2023
    @IbrahimMohammad2023 3 роки тому

    Amazing illustration , Thanks so much

  • @zomgoose
    @zomgoose 2 роки тому

    Clear and concise! Thanks!

  • @tasapornv
    @tasapornv 2 роки тому

    Thanks for this. It is well explained and very easy to understand. Keep up good work.

  • @alyssayoung421
    @alyssayoung421 4 роки тому

    thanks for helping me understand this concept!

  • @BruceLee-gh7oi
    @BruceLee-gh7oi 4 роки тому

    Best explanation I have ever seen

  • @-MikaelaWuisan
    @-MikaelaWuisan 2 роки тому

    Thank youu so much for this easy to understand explanation! Truly truly helpful :)

  • @adityabhat3108
    @adityabhat3108 4 роки тому +1

    Thank you.. the concept was really well explained :)