Types of Cryptography | Blockchain

In this video we will discuss:
Symmetric Key Cryptography
Asymmetric Key Cryptography
Encryption
Decryption
#blockchain
#cryptography
#symmetric key cryptography
#asymmetric key cryptography
Editing Monitors :
amzn.to/2RfKWgL
amzn.to/2Q665JW
amzn.to/2OUP21a.
Check out our website: www.telusko.com
Follow Telusko on Twitter: / navinreddy20
Follow on Facebook:
Telusko : / teluskolearn. .
Navin Reddy : / navintelusko
Follow Navin Reddy on Instagram: / navinreddy20
Subscribe to our other channel:
Navin Reddy : www.youtube.co....
Telusko Hindi :
www.youtube.co....
Donation:
PayPal Id : navinreddy20
Patreon : navinreddy20
www.telusko.com...

[@shouvikpradhan1094]

Thanks Naveen sir , I have attain some seminar , and also see some other stuff but the concept of public key and private key was not cleared to me, thanks sir this time I have clear concept about this only bcoz of u

[@akshbansal7715]

nice to see u posting vids so frequently!!! keep it up

[@mayankbatra4752]

Thanks alot for the explanation. But I have a question, you have mentioned that A will use the public key of B. This means that B has shared its public key to everyone so that anyone can encrypt a message and send that message to B. This means every node on the network will have B's key. In a similar manner, C's and A's public key will be shared. This again refers to the problem which you described in symmetric key cryptography that we need to maintain an overhead of so many keys. Please explain sir?

[@thuannguyenuc1279]

The asymmetric will reduce the number of keys that needs to be used in the system. 'Cause in symmetric cryptography, when A and C want to encrypt a message and send it to B, they will need to use two different keys and of course, B will need two different keys to decrypt the two messages send from A and C. But when you use asymmetric cryptography, A and C only need the same key to encrypt their message (that is B's public key) and then B will only need a key to decrypt (that is B's private key) two different messages sent from A and C. Hope this will help someone in future 😄

[@Murugavel-ee123]

@@thuannguyenuc1279 yes!! Correct

[@yusufmohammeddelvi3882]

I watched so many videos on this topic but I did got it. you explained it so easily in 4 mins Thank you somuch.

[@atharva2004]

symmetric key cryptography: same key is used to encrypt and decrypt. asymmetric key cryptography: everyone has 2 keys,public key and private key. message is encrypted using public key and decrypted using private key(or vice versa). everyone's private key and public key is different. but public key is known to everyone, and private key isn't .

[@crazyshala4571]

Sir make video on what level of maths are required in machine learning and data science and where from can learn it .......

[@arunrajkumard7231]

your video making technique is so awesome... and the content delivery so good... explanation is clear...

[@yugandharsurya]

these videos are too good to understand the concept of blockchain

[@jackfrost8969]

wow, excellent explanation

[@AB-1023]

What keeps a hacker from intercepting the message and the key in symmetric? Thank you great video

[@marysony7018]

thank you sir,but i have a question..u said that in asymmetric key cryptography, we may encrypt using private key and decrypt using public key right? but decryption using public key is not secured right ...i mean public key of B is known to C also...so how will that be secured???you didn't give example for[encryption using private key and decryption using public key] but you gave example only for[encryption using public key and decryption using private key]...so can you kindly explain me the second case where encryption by private key and decryption by public key

[@muhammadyasin9387]

the pair of keys are generated by RSA algorithm in such a way that the private and public keys are mathematically linked. when you know the public key of B you can send it to B but as you send the massage encrypting with a public key, to decrypt the cipher file you must need a private key. AS the public and private keys are linked together only B's private key can decrypt the cipher file. for an example : suppose you know your friends address now you want to send a latter on his/her mailbox which is standing outside of your friends house(the mailbox). and the mail box is locked by a key which belongs to your friend. now here the address of your friend is known to all this address is the public key and the lock of this box will open only by the key which your friend have already. The lock of your friends mailbox will not open by other's private key.

[@dheerajmaske1194]

@@muhammadyasin9387 Read the Question again

[@shaikafreen5337]

The way ur explaining is very crystal clear sir...

[@faisalmomin3110]

Sir any book you suggest about cryptography to us

[@Jeevan_prakash]

Thanks for the video I have learnt new things through this video

[@nadimetlavishwet1355]

Hii sir,I love when you start as welcome back aliens,Why you start like that ?? Any reason behind that ?? 😁😁

[@rishi680]

It help for *Gate preparation*

[@sherajr]

Question: If A sends message to B by encrypting it with a private key and B can decrypt it with a public key. Can't anyone decrypt it, because B's key is public and can be seen by everyone?

[@AkashKumar-op7cu]

I have also same question

[@sherajr]

@@AkashKumar-op7cu after looking over my question, I think the answer is that you don't encrypt with a private key, you encrypt with the public key and decrypt with the private key.

[@AdityaKumar-cc7uw]

You are awesome sir 😋😋😋

[@pavithrasree4303]

Ur way of explanation is awesome sir...please make videos on data structures sir

[@ashwanikr9561]

Thanks Sir for your video which always be helpful to us....

[@AbhishekSingh-tz3uv]

Wonderful explaination!

[@girishparameswaran6699]

In the example of Assymetric Cryptography A node encrypts the message with B public key and B node decrypts with B private key. Can you please explain why we encrypting with receivers public key not using the own public Key i.e A public key.

[@rajsahu3136]

Beautiful Explanations, Loved it

[@farbodalinaghian5791]

So every node has to keep a packet full of other node's Public Key?? What's the advantage over Symmetric Key?

[@dahlialoris1815]

Utopia the most secure and secure system in the world!

[@abiramiparanjothi4747]

Can u plz provide cyber security videos

[@vishalvala4408]

Thank you sir for the series Keep it up

[@sindhubasavanna1927]

Thanks for the fantastic video sir!!!!!!!!!!!!!!!!

[@saurav123singh]

I have a doubt in asymmetric key concept :- How will B know that the msg was sent by A only it could have been sent by C also. How does B get to know who sent him the msg ?

[@saurav123singh]

Got it i just saw your next video thanks.

[@bilalsayeed2396]

Amazing

[@sachin_suthar]

Thanks for the informative video. Keep it up..

[@JK92007]

Very nice sir.....👌👌yr always awesome.....

[@rakeshgoswami1784]

but sir in asymmetric key cryptography how the B will know which key is used to encrypt message?

[@koti2547]

Super

[@nidhisharma-el8lj]

Nicely explained

[@mdjahidulislam9205]

Thanks

[@KremsonKhan]

nice video the concept or logic is so simple once u understand it lol

[@rambabunakanamoni8927]

Sir which is best to get a job java or JavaScript.why I am asking this because in previous videos you said that now with JavaScript we can develop everything.i am new to programming.so please tell me which programming language I have to learn.make a video on this

[@chethanprabhu4475]

As a beginner go for java..once u get a job as java developer..then study JavaScript. You can try 2nd job as JavaScript developer. Im telling this because as a fresher java jobs are way more than JavaScript :)

[@leonardoobay500]

Do you have any more crypto videos?

[@mahendrapanchal301]

Awesome.. 👌👌

[@parihar373]

What happens? if A encrypt cipher text with his private key and sends to B. How will B decrypt the Text. which key B will use

[@Telusko]

A's public key

[@gouravinsan1339]

Gr8 sir

[@mineshjariwala209]

Got it

[@rakshitks7850]

Not clear how is he(B) able to decrypt using his private key since the message is encrypted using public key of B and private key of A....? B is able to unlock the layer 1 of the message using public key he has ....but how can he decrypt the message locked using private key of A?

[@prajeeshprp941]

'A' doesn't use its public key at all to send a file to B A uses B's public key alone to encrypt and then B uses B's private key to decrypt. Only B knows it's private key , and therefore no others can decrypt

[@rakshitks7850]

@@prajeeshprp941 the man in the middle will be able to decrypt it because everyone has B s public key and only one lock..... Could you explain now? I am half satisfied with your answer Thanks in advance

[@prajeeshprp941]

@@rakshitks7850 If public key of a receiver is used to encrypt , private key of the reciever is needed to decrypt . so A sends the msg with B's public key , that msg can only be decrypted using B's private key . private keys are not public so only B will be able to decrypt. man in middle has B's public key but not B's private key .

[@saikrishnareddy3485]

Watch again....A never uses it's private key for encryption...it uses B's public key and B uses it's private key for decryption...

[@MunnaKumar-gf2vr]

Sir but how the two computer get the keys

[@MunnaKumar-gf2vr]

Ok one node can get the public key of other node but how it can get that key

[@DrShafiaSayed]

Itna achha koi kaise padha sakta hai?😮

[@sivakrishnanj9544]

Key ??

[@crazyshala4571]

Sir make video on what level of maths are required in machine learning and data science and where from can learn it .......

[@mysticlunala8020]

What're you doing right now?

[@GenerativeAI-AI]

Search in KZbin " unfold data science"...you will get real data science concept here

[@kranthikumar1501]

awesome video

[@pranjalgupta9427]

Nice explaination

[@saddamahmad2310]

thank you very much sir for this video

[@vidyakrishnan1757]

Wowzer ! Your videos are amazing ! I love that you leave us on a cliff at the end .... like in a netflix show so i definitely watch the next, I am binge watching this playlist right now !

[@careerside4005]

Sir, You are awesome..

[@padmasrivastava3782]

Sir if A uses public keys then A should have 100 public keys i.e Public key of B, public key of C and so on . In short A should have 100 public keys to share data with 100 people ??

[@siddharthnandava]

sir, in today's world we know that machine learning is the fastest-growing technology and everyone wants to learn it. so please if you make a series on how to get started in machine learning and how to be an expert in machine learning it will be very great for us. so I request you to make a series on it. once again thanks for delivering useful content

[@shivamnavthar5851]

How will one encrypt with private key and decrypt with public key?

[@pratikgupta7373]

Content and video quality is awesome

[@kranthikumar1501]

Waiting for more on blockchain

[@siddharthnandava]

hello sir, you are too good. thanks for creating amazing content for us.

[@anshupanda2149]

Sir is Python series over ??

[@Mahesh-gq7fm]

Very superb tutorial. great

[@kartikpandey2685]

U ARE AWESOME

[@sandeepbadimili9742]

Video editing too good? What's the software ?

[@NavinReddyJava]

Camtasia

[@rakeshsanthapuri9933]

Omg

[@nktt9351]

Sir but again one needs to know public key of everyone which means that you need to store a bunch of keys one for every user

[@nktt9351]

@@Telusko Thank you sir.

[@karanagrawal1726]

Sir how private encryption and public decryption will be secure?

[@madhanvb7222]

Naveen ready if possible do video series on full stack devloper !

[@charlesralph9743]

Please is it types of encryption or I am confused since I know types of cryptography are Block Cihers and Stream Ciphers.

[@uoftosgroup2595]

So in Asymmetric Cryptography, we have double number of keys. The public key for the other nodes is also present and not to mention the private keys. In that way, how is it better than symmetric cryptography.

[@Bengal_Tiger33]

I can't understand, how a message will be decrypted a encrypted signal, when both keys are different

[@anushan1668]

Hi can u tell me how to create custom temperature data in python

[@chittarilokesh5838]

Very happy and i am glad to see you on blockchain and making clarity videos with wonderful explanation. Thank you so much sir for this videos........

[@shankarmagarde8171]

Thank you soo much sir... You are really greate.... Me aap ke videos dekhta hu.... Aap visvas nhi krogye ek video 4-5 baar dekta hu 🤭😂😂 or mane aap ki video dekh clg me mari presentation di..... Andy presentation is the best in whole clg.... 🤩🤩👍 Sir... Thank you so much....

[@akshaydevh]

awsome Explanation, and please do a video on key pair generation

[@amitcshah]

I request you one video on seed key. how does it work in blockchain?

[@srinivasreddyk3457]

Excellent Navin

[@lindatsabedze3122]

what if A want to send a message to B and C at the same time?

[@harsiddhisinghdev4650]

clear concept..

[@arindam_i_am]

Awesome sir !!!

[@meena7246]

It was clear

[@rajeevsinghrajput6752]

thanks sir