Digital signature
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- čas přidán 4. 12. 2019
- #DigitalSignature #Hashing #abhishekdit #NetworkSecurity #Cryptography #InformationSecurity
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My name is Abhishek Sharma.
This is the series of Cryptography and network security.
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In this video, i have explained what is Digital Signature in Cryptography and network security.
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Can you please let me know the text book you are using.
Cryptography and network security by behrouz A Forouzan
@@AbhishekSharmaDit thanks a lot
@@AbhishekSharmaDit thanks again
yeah it was good
you are from pakistan
That why I love indian boy explaining things on pen paper
Integrity= hash function
authentication= digital signature
confidentiality= encryption
Waah kya baat hai
Authentication=Mac 🤔
waise availibility hota hai a ke lie
a very good work and thank you for clearing our concepts . loved your video, it is very useful as semester exam point of view.
Bhai fan ho gaya main tumhara.. Bas tumhare hi lecture se padha hai maine... Love u bro..
Very nice explanation.. thank u so much
This is the best channel for semster preperation .The content is really structural and exact.
Realy like ur way of Teaching thumbs up👍❣️
Bahut achha explain kiye hai bhaiya
Thank you bhaiya , ye kafi accha explanation tha
Once again, here one night before the exam. Thank you...
Sir ,I like the way you teaching
Sir if we want confidentiality too which algorithm should be used!???Should DESor AES be used??
Well understood .thanku bro!
great help thanks great video
Very nice explanation
Nice,explanation bro..👍👍
thanku bhaya this big and soo... big help for me in my exam shree ram ji aap ko bhala karay bhaya🕣🙏🙏🙏🙏🙏👇👇👇👇👇👇👇👇👇👇👇👇🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏👇👇👇👇👇👇👇👇👇🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏
Amazing explanation
Can you explain the hash thing it with an example? Explain it with some msg written in email
A good explanation 😊
Bhaiya ye hash function se only signature ko digitial signaure me convert krate h ky ,
Ya fir pura msg bhi convert hota h private key se,
Well explained 👍💯
superb 👍👍
Superb ♥️
If someone agree and give his concent through email but no signature on agreement is this considered as valid document?
U r to good bhai ....❤️
Before teaching us our teacher learns from ur video then teach us ..... :)
kindly sir upload the lecture on Arbitrated Digital Signature ...
Can you share your notes of all encryption series???
*Great*
Good explanation liked it can u plz explain about elliptical curve digital signature algorithm......
Very important information you will get
Kya hum project me use kr sakte he apka knowledge?
Can u plz make the vdo of kerberos encryption using non-cryptographic tools
Can we get PDFs? Of your lecture notes
Bhaiya apne jo general copect ka diagram banaya usme aapne Singing algo toh use he nahi kiya
toh vo digital signature ka general concept kese hua?
Even the message also changes right if some hacker attacks.....why will it be the same? @7:53
Agr beech me message alter hua hai to last step me message ko hash function me daalne pr jo hash aaya aur jo first step me message ko hash function me dalne pr hash aaya tha, vo same kse hoga jb message hi change hogya ??
If public key is used to decrypt then intruders can attack during transmission because public key can be known to others also..so what is the use of encryption here if you could answer?
ya he made blunder out there
I think the encryption he is talking about is not about the message,its about the signature. Only sender (let's say A) can create his signature so private key makes sense,anyone can verify that signature belongs to A so public key of A can be used
JAZAK ALLAH sir
Thank you..
Can we get PDFs Of your lecture notes?
Thank you
msg aur hash dono ko kyu encrypt krenge, only hash ko encrypt krenge na using private key of A ?
thank you sir
bhai jaan bacha liya yaar
tmro is my end sem exam and this video stopped my cry
Bro, can u share your book's PDF file?
Please make video on hyperelliptic curve cryptography
Bhai mcqs hr topic pr btado.. Bca final year is mcqs based this time
Your videos are very helpful to us....thank you... 😊
in your earlier video of Hash/MAC Function, you didn't mention anything about Integrity. Could you confirm if in any scenario (that you discussed) we would be achieving integrity along with authentication and confidentially?
There is the concept of message integrity basis where the message will have the digest if the digest matches the public key of the receiver then the integrity of the message is achieved
Bhai digital signature ka koi mathematical base example nhi h ky?
Sir app word expand algorithm of rsa ma ek video bna do plxx
To everyone who is asking about hw we can decrypt the data using the public key. To validate the data's integrity, the recipient first uses the signer's public key to decrypt the digital signature. The recipient then uses the same hashing algorithm that generated the original hash to generate a new one-way hash of the same data.
Vha hash/message ki place pr cipher aayega after encryption
kya ap oo book author ka name bata sakte hoo ?
kon sa book use karo rahai ho ??
Sir can you send the notes of cryptography
kass app digital certificate ka bhi bana dete itna aacha sabhji video banate ho aap
Aapne HMAC ki video nhi dali hai kya
Digital signature bs itna hi h?...sir mjhe Google doc, e-mail, social media handle k classes mil skte h
well i'm a bit confused ..as per my knowledge we encrypt data using public key and decrypt data with private key...then why the reverse is being done here?? please explain
@@girisharora945 okk thanks
Brother it's for authentication Authentication is received if A decrypts with his own private key if a done with b public key then it's not authentic that A send mssg because B public key is all over on Internet
Can you solve sums based on this
bhai....🙏🏻🙏🏻...bachaliya tumne 😪😭
Sir can you please explain the video in English also ..
Public key is in encryption and lrivate key in decryption
Any user will have the public key of A, so how the confidentiality will be maintained for second case?
He missed....
let me help you (if this exact question u r asking)
suppose, A as Sender B as Reciever,
obviously, A has some plain text (PT)
private key of A (PrKA) and public key of A(PuKA)
private key of B (PrKB) and public key of B(PuKB)
{Note---> PuKA ( PrKA =None OR we can say they can cancel one another}..............................................................................(NOTE)
Now the game begins....
A--> PT --> PrKA (PT)--> PuKB (PrKA (PT))
Now (PuKB (PrKA (PT))) becomes a Free Electron and only B can get it.
now,B has a Free electron, and his private key(PrKB) also.
B -->PrKB ( PuKB (PrKA (PT)))
B-->PrKA(PT)......... .............................................(from NOTE)
Now B goes to google and asks for Public key of A
B-->PuKA(PrKA(PT))
B--> (PT)......................................... (from NOTE)
Hurrah!!!!!!!
(Pls let me know the feedback, I will erase it otherwise)
encryption is done through public key
decryption is done through private key
pls check your video again
Digital copyrights and search engine pe apne video upload ki h kya sir? If yes then please provide me that link.
Synopsis kese bnai jati a
Can you share the notes
I have a ques sir.. i studied somewhere that we should encrypt the msg with the help of public key of receiver and receiver will decrypt it with his private key to maintain confidentiality but here you said the opposite. I know you said there is no use of confidentiality but still its a doubt. What key should we use to encrypt a msg and vice versa. HOPE YOU WILL REPLY.
In normal situations it is ok but in digital signature concept we will have to ise the private key of the sender so that hame pata chal sake ki ha yahi banda i.e. sender h jo hame msh bhejra h
To encrypt the msg we will use hash function concept along with digital signature
Aage series follow karo sab clear hota jayega
10:00
You force me to comment yar! Dam clear all doubt of mine .
Sur can u provide a note for this question for 15 marks!
Why we are using private key of A for encryption ???
It must be public key of B? Correct me if I am wrong
Please sir.. explain the video English to English all videos
WHAT IS Digital 33 Signature ?????
Please provide notes any video
11:57 your using private key of user-A. So, anyone with public key of user-A can decrypt the message and get the msg and hash
So, how are we achieving confidentiality here.
And in the last fig @ 12:50 we achieved confidentiality, non-repudiation and integrity.
Kya apne tcp congestion control algo PE video bnaii haii btaa do
No nahi dali h
@@AbhishekSharmaDit ohkkk 😔
@@himachalivloggershipali6299 kisi or channel m dekh lo ..isko vse b smjhana nhi aata
A k public key kahase milega bhai....A ko pblic key v B ko bhejna parega kya?
Nhi public key toh public hai wo sbko pata hoti hai
Please short me thoda slow explain kare sir
It's public key in Encryption
No, Private key is used for encryption
yahh
But A public key know to everyone so theere is no confidentiality anyone can acess A message
Encryption is a public key and decryption is private key
No, Private key is used for encryption and public key for decryption
How do IAS officers do digital signature?
Ycce gang wya
bro concept clear krke btao or har part ko alag alag krke, or yaha waha ye wo shbd mat istmaal kiya kro, kuch clear ni hota,
Are you from Dehradun?
Yes
Areh sahuu tum bhi Yaha😂😂✋✋
@@tenabisht sab doon se hi ho kya? 😂
@@AbhishekSharmaDit Haan mtlb hum teeno Doon se hi hn😂
Abe yar😂😂
Bhai itna acha video bna ra ho full support ha aapko keep doing the good work . Jo like support ni kar ra chutiya ha
It's would better that if u did this video in English... there will be people who doesn't know hindhi how can they know??????
Bolny ki speed thori km krlo bss
Sir thoda dhire baat kro.....itni jldi jldi kyo boltey ho🙄
Going too fast,for a teacher.
Bht galat tarike se samjhya hai 😂😂
Public key encrypt karta and private key decryp🤦♀️
Thank you