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

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[shaikafreen]

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

[crazyshala]

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

[mayankbatra]

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?

[atharva]

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 .

[akshbansal]

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

[shouvikpradhan]

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

[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

[vidyakrishnan]

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 !

[padmasrivastava]

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 ??

[yusufmohammeddelvi]

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

[chittarilokesh]

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

[saddamahmad]

thank you very much sir for this video

[arunrajkumard]

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

[marysony]

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

[shankarmagarde]

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 Andy presentation is the best in whole clg.... 🤩🤩👍 Sir... Thank you so much....

[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?

[siddharthnandava]

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

[yugandharsurya]

these videos are too good to understand the concept of blockchain

[faisalmomin]

Sir any book you suggest about cryptography to us

[Jeevan_prakash]

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