Digital signature

#DigitalSignature #Hashing #abhishekdit #NetworkSecurity #Cryptography #InformationSecurity
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My name is Abhishek Sharma.
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In this video, i have explained what is Digital Signature in Cryptography and network security.
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[@chinnariprasad5177]

Can you please let me know the text book you are using.

[@AbhishekSharmaDit]

Cryptography and network security by behrouz A Forouzan

[@chinnariprasad5177]

@@AbhishekSharmaDit thanks a lot

[@shashikanthd4767]

@@AbhishekSharmaDit thanks again

[@phantom2k858]

yeah it was good

[@technologiesmotivationd7754]

you are from pakistan

[@Gaurav-pm5hs]

That why I love indian boy explaining things on pen paper

[@nabeelakbar8255]

Integrity= hash function authentication= digital signature confidentiality= encryption

[@soumyadeepbarik5711]

Waah kya baat hai

[@tejas_machchhar]

Authentication=Mac 🤔

[@creeper4735]

waise availibility hota hai a ke lie

[@rxzin7201]

@@tejas_machchhar yes signature and mac both provide authentication, but digital signature provides non repudiation and mac do not

[@ajayshankhwar730]

This is the best channel for semster preperation .The content is really structural and exact.

[@RAHULYADAV-dd3yy]

Bhai fan ho gaya main tumhara.. Bas tumhare hi lecture se padha hai maine... Love u bro..

[@ShivamTiwari-mo3dj]

a very good work and thank you for clearing our concepts . loved your video, it is very useful as semester exam point of view.

[@govindkumar-f3x2b]

thanku bhaya this big and soo... big help for me in my exam shree ram ji aap ko bhala karay bhaya🕣🙏🙏🙏🙏🙏👇👇👇👇👇👇👇👇👇👇👇👇🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏👇👇👇👇👇👇👇👇👇🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏🙏

[@viraltoovideos]

Bahut achha explain kiye hai bhaiya

[@niharjyotibasisth]

Once again, here one night before the exam. Thank you...

[@rutujapandule1360]

Before teaching us our teacher learns from ur video then teach us ..... :)

[@kavitasharma8483]

Sir ,I like the way you teaching

[@angelahir8037]

Very important information you will get

[@angelahir8037]

Kya hum project me use kr sakte he apka knowledge?

[@coming_out_97]

A good explanation 😊

[@priyanshigupta6178]

Well explained 👍💯

[@kandukurianjani7852]

Very nice explanation.. thank u so much

[@arjitprakher73]

Thank you bhaiya , ye kafi accha explanation tha

[@geetikagupta2745]

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?

[@khai-vq5hn]

ya he made blunder out there

[@shaheryarahmed5151]

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

[@avishekkumar829]

Public key is used for encription while private key is used for decription.

[@BharatSports365]

You are thinking in right direction as per cryptography but here we are checking the authenticity of the msg that A has sent the msg or not. So for data security purpose we use double encryption first msg encrypted with B's public key then encrypted with A's private key. And now at receiver end B first decrypt with A' public key ( these authentic that it's coming from A) then he decrypt the msg with its(B) private key.

[@namrataghatol1570]

It is not used for confidentiality …used for non repudiation only

[@_NaeemTamboli]

Amazing explanation

[@Mmk-gi4ug]

At 5:58 only the hash must be encrypted using the private key of A and not the message.

[@syedasyed2688]

Realy like ur way of Teaching thumbs up👍❣️

[@shreyabhosale9962]

Very nice explanation

[@umer6946]

*Great*

[@NottyPriyal]

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.

[@shweta_sharma172]

superb 👍👍

[@khusbusahu5881]

Your videos are very helpful to us....thank you... 😊

[@sahil73626]

Well understood .thanku bro!

[@jayanthts5198]

bhai jaan bacha liya yaar tmro is my end sem exam and this video stopped my cry

[@joydeepbhattacharjee5305]

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

[@joydeepbhattacharjee5305]

@@girisharora945 okk thanks

[@gautamgoyal108]

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

[@kangna55]

Can you explain the hash thing it with an example? Explain it with some msg written in email

[@syedasyed2688]

kindly sir upload the lecture on Arbitrated Digital Signature ...

[@devchiragbhaithoriya9172]

Which book you use in video

[@kishangautam1321]

U r to good bhai ....❤️

[@TeachCraft4]

thank you so much

[@vipinchaudhary7713]

Nice,explanation bro..👍👍

[@sumasri606]

Good explanation liked it can u plz explain about elliptical curve digital signature algorithm......

[@saikun0293]

Even the message also changes right if some hacker attacks.....why will it be the same? @7:53

[@preyumkumar7404]

great help thanks great video

[@ddr_hritik5823]

Can you share your notes of all encryption series???

[@irfanshaik1302]

bhai....🙏🏻🙏🏻...bachaliya tumne 😪😭

[@CareerWithTech]

encryption is done through public key decryption is done through private key

[@CareerWithTech]

pls check your video again

[@pragatisahu4355]

Aapne HMAC ki video nhi dali hai kya

[@flutter_graphic35]

JAZAK ALLAH sir

[@garima2128]

Can u plz make the vdo of kerberos encryption using non-cryptographic tools

[@samandeepkaur691]

Please make video on hyperelliptic curve cryptography

[@manasbanjare3198]

kass app digital certificate ka bhi bana dete itna aacha sabhji video banate ho aap

[@hamzaalvi3599]

Why we are using private key of A for encryption ???

[@nidhijaswani2930]

It must be public key of B? Correct me if I am wrong

[@statsgurru5758]

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?

[@Mohit_mk_]

Superb ♥️

[@dhaneshpt8641]

Thank you..

[@rajendertanwar1881]

Justice for person B 🙏 ❤️

[@Yoyo-ck9pm]

Sir if we want confidentiality too which algorithm should be used!???Should DESor AES be used??

[@techhackz2897]

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.

[@sarthakkumar8679]

ye notes ka pdf milega kya

[@vigshakvlogs4116]

Is this dsa method ?

[@dheerajsahu4547]

Vha hash/message ki place pr cipher aayega after encryption

[@gautamsingh9104]

Bhai digital signature ka koi mathematical base example nhi h ky?

[@alapandas3538]

Public key is in encryption and lrivate key in decryption

[@sweta3345]

kya ap oo book author ka name bata sakte hoo ?

[@vinod420786]

thank you sir

[@shekhar2784]

Can we get PDFs? Of your lecture notes

[@prodiptamondal1758]

Any user will have the public key of A, so how the confidentiality will be maintained for second case?

[@nayanyadav5005]

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)

[@nikhilchoudhary4705]

msg aur hash dono ko kyu encrypt krenge, only hash ko encrypt krenge na using private key of A ?

[@cst001anantharajd2]

Can you solve sums based on this

[@chanchalgupta2259]

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,

[@sumitrasar6204]

You force me to comment yar! Dam clear all doubt of mine .

[@gulamsarwar609]

Bro, can u share your book's PDF file?

[@Singham_here]

It's public key in Encryption

[@centerwing2101]

No, Private key is used for encryption

[@sahibdhawan9847]

Bhai public key se encryption hota hai and private se decryption

[@mehaksaxena866]

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.

[@AbhishekSharmaDit]

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

[@AbhishekSharmaDit]

To encrypt the msg we will use hash function concept along with digital signature Aage series follow karo sab clear hota jayega

[@mitulzala6976]

10:00

[@utkarshdubey4130]

Bhai mcqs hr topic pr btado.. Bca final year is mcqs based this time

[@IamSkyLight]

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?

[@NottyPriyal]

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

[@premcontact3230]

If someone agree and give his concent through email but no signature on agreement is this considered as valid document?

[@vlogplanet5536]

Can you share the notes

[@Punnu00]

Synopsis kese bnai jati a

[@divakar_alig8781]

Sir can you send the notes of cryptography

[@sumitbhatt3715]

Sir app word expand algorithm of rsa ma ek video bna do plxx

[@himachalivloggershipali6299]

Kya apne tcp congestion control algo PE video bnaii haii btaa do

[@AbhishekSharmaDit]

No nahi dali h

[@himachalivloggershipali6299]

@@AbhishekSharmaDit ohkkk 😔

[@VinodThakur-i4i]

@@himachalivloggershipali6299 kisi or channel m dekh lo ..isko vse b smjhana nhi aata

[@bestshorts_rk2342]

WHAT IS Digital 33 Signature ?????

[@geopluse6336]

kon sa book use karo rahai ho ??

[@माधव..MADHAV]

Fourozon dcna and security

[@RishiKumar-tv4jk]

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 ??

[@anshukumari109]

Digital signature bs itna hi h?...sir mjhe Google doc, e-mail, social media handle k classes mil skte h

[@novyajyoti7920]

Encryption is a public key and decryption is private key

[@centerwing2101]

No, Private key is used for encryption and public key for decryption

[@lovesingh5105]

Thank you

[@nagamaruthitubati0305]

Sir can you please explain the video in English also ..

[@digitalbb1893]

A k public key kahase milega bhai....A ko pblic key v B ko bhejna parega kya?

[@mr.pranjul_01]

Nhi public key toh public hai wo sbko pata hoti hai

[@poojasankpal9046]

Please short me thoda slow explain kare sir

[@poojayadav9821]

Digital copyrights and search engine pe apne video upload ki h kya sir? If yes then please provide me that link.

[@vishalmodi5469]

Please provide notes any video

[@syedrakeen7759]

Sur can u provide a note for this question for 15 marks!

[@kandukurianjani7852]

Please sir.. explain the video English to English all videos

[@shivanisahu949]

Are you from Dehradun?

[@AbhishekSharmaDit]

Yes

[@tenabisht]

Areh sahuu tum bhi Yaha😂😂✋✋

[@AbhishekSharmaDit]

@@tenabisht sab doon se hi ho kya? 😂

[@tenabisht]

@@AbhishekSharmaDit Haan mtlb hum teeno Doon se hi hn😂

[@shivanisahu949]

Abe yar😂😂

[@meetkakadia3404]

yahh

[@GauravDuseja-t6q]

But A public key know to everyone so theere is no confidentiality anyone can acess A message

[@sumitbhatt3715]

Bhai itna acha video bna ra ho full support ha aapko keep doing the good work . Jo like support ni kar ra chutiya ha

[@siddhantsingh6578]

How do IAS officers do digital signature?

[@nischayrawat6216]

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,

[@Funduniyatv]

Smjhaty ap bht acha hyn but apki handwriting smjh nahi ati r kuch words miss ho jty hyn kindly esi handwritting kryn k smjh bhi to ay kia likha hy

[@iamgood3406]

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??????

[@whois2517]

Ycce gang wya

[@arjunbunny5424]

Sir thoda dhire baat kro.....itni jldi jldi kyo boltey ho🙄