One Time Pad (Vernam Cipher) Encryption Explained with Solved Example in Hindi
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- čas přidán 2. 03. 2019
- Myself Shridhar Mankar a Engineer l CZcamsr l Educational Blogger l Educator l Podcaster.
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For decryption: (Cipher text number - key number)= Plaintext number. Then convert back to letters. Eg: 8(i of cipher text)-1(b of key)=7(h of plain text)
and 23-8 = 15 and 15 is not l it is p
Actual method is :
(Ciphertext no. - Key no. ) Mod 26 = plaintext no.
@@Annukulhad see ☝️
Cipher text i means i=8
Key text b means b=1
Ciper value - key value
8 - 1 =7
7= H
So first letter is H
Decryption
Correct is :- (Cipher Text Number - Key Number + 26 ) mod 26
Great Videos. You saved My Semester. thanks a lot! it would be great if you could make videos on DES and IDEA algorithms
woooooooooooooooow what a explanation....jus loved it. You have explained it in such a nyc manner.keep it up good going.
Zabardast!!!! Such an awesome explanation. God Bless!!
After Addition we have To check if our Added Value is Greater Than 25 Not 26 , and subtract 26. Because our index start with 0..
510 like isn't enough for this video guys , need to share more this video.... Awesome explaination sir
Superb yarrr best sirrr for networking sub
bhaiii chaaa gaye ho ... abi 10 mints me mera quiz tha and I was so worried about that topic ... you explained it well ... love from Pakistan god bless you
chal nikal fir
Your videos helps a lot of Student. Really Appreciate your The METHOD of teaching . Thanks for Teaching Us Sir 🎉
you teach very well. i was looking for Vigenère cipher.
good work bro this 5 minutes really save my time
Sir your teaching is amazing
great explanation. Thank you
Very well explained sir... thanks
Super sir very nice bahut achcha explain karte ho
very helpful video for exam thank you soo much sir
Thank you soo much man for this quality content and your way of teaching is soo good. 😍😍
Thank you so much sir for making this concept so much easy to understand
really you are the great sir.. thank you so much for this
Very understanding video sir...thanks
Bahut badhiya sir
Best Explanation Brother😍😍
Bhut hi achi vedio thi 😊😊
Amazing, Thank you so much
zaberdast boht shukareya
Very helpful classes sir
Thnkuu very much sir... U r the best
Excellent explain tion
Awesome sir😃
nicely explained
U r great sir
Thank you sir love from gujarat ❤️
very good explaination...decryption reverse hoga na?
thank you so much sir ..........
excellent teaching method sir g .................from pakistan
excellent sir,iam a BSC.CSIT student ,iam from nepal🇳🇵🇳🇵
Thanks sir
Gajab
Thank you sir :))
Thank h sir that's nice..sir
India me ase hi sir ki kami hai jo padahe wo ek hi bar me samaj ajaye
sir ye qncryption technique companies me use bhi hoti hai ya nahi....
Plz upload the videos on embedded & real time os
Awesome
For Decryption technique refer to Abhishek Sharma's video from 6:23
And thnx for uploading
how reader can read orignal message? how reader or receiver know the key and how it can be reverse to convert into readable format?
jordar sir
Few mistakes
1. E and e is not same.
2. This is mostly used with string of bits. Although you have taken english word example. The should be further expanded using their extended ascii( represent in terms of bits)
3. use modulas keyword and not subtract
4. The key must be truly random.
excuse me sir, how will receiver be able to know the key that we have applied in order to decrypt the message as the key varies from message to message!!!
HCI ke videos please dalenge kya. Book bhi nahi hai, students ko kafi dikkat ho rahi hai. Thanks in advance
How will the receiver know that key? However, it varies from message to message.
Decryption ?
that was best: czcams.com/video/xBRmS8kPIjQ/video.html&ab_channel=AbhishekSharma
6:00 greater than 26? Or 25?
And then subtract from 26? Or 25?
if greater than 25 subrtract 26
You just have to do perform mod 26 operation on all add values
If Greater then you have to subtract 26
If greater then 25 then you have to subtract 26
if addition comes 25, it means Z. if addition comes 26, then subtract with 26 and you will get zero which means A.
👍
The condition should be if addition > 25 or addition >= 26
Apply "Mod 26" on all the terms of ADD.
Sir... I want elliptic curve cryptography video plz...
then what about Vigènere tableau is uses same technique/method
Sir can you please explain cryt arithmetic problem
Gudddd
how to decrypt with this algorithm at the reciever side?
Check out this video on how to decrypt it from the other side. czcams.com/video/R5LqOqaBYG8/video.html
saviour
Excuse me, Sir, How can we decrypt Ciphertext in the One Time Pad technique?
I think it is not possible bro
By subtracting the respective key numbers from cipher text
@@AdduKeShorts and it the subtraction text is less than 0 then add 26 to it
what is Padding in cryptography, Sir?
Sir key Alphabet can be same?
sir if the addition == 26 then??
Bro plz change this cipher text into plain-text
TOTP also ???
Decrept kaise karenge ise
but, how to decript ciphertext to plain text
greater than or equal to
So how we get plain text back here...???
Barabar 😄
Yeh polyalphabetic cipher bhi yeh hi hota hai sir?
Vernam cipher hi
if addition is 26 then what to do
substract ki jagah... mod 26 sab jagah laga sakte
TOTAL ALPHABET 26 HAI LEKIN HUM 'A' KO ZERO SE ASSIGN KIYE HAI, SO HUME 25 SUBTRACT KARNA CHAHIYE YA 26?????
Subtract me 26 number aaya to? Kya karna he?
Cipher text to plaint text kese kare
sir..................plz hamare proff banjao😮💨
But how to decrypt???
Why the number is subtracted by 26 rather than 25? The numbering is between 0-25.
Please sir clear the doute
It's easy to make but hard to solve brother.
Decryption kasa hoga
But sir wt about decryption
Agar add mai 26 hua toh?
You said greater than 26 . I think it would be 25.
Thank you
Sir what if number itself is 26? We have to take 26 as A ?
yes. if your addition is 26, then subtract it with 26 and you will get answer as zero. which will be equal to A.
if the number is 26 the also you have to subtract by 26 then you will get 0 and at 0 position is represented by A
Time to decrypt number station's data.
5 minutes
I have one Question
If you have taking A-Z are Respectively 0-25 then Why You Subtract using 26.
In this Point You would be using 25
In My opinion
Please I am bitty confused this point
we have given 0-25 for A-Z because of programming simplicity. But if you count alphabets from A-Z starting with 1, the letter Z will come at 26th place. That is why we subtract with 26 instead of 25. you can still count... If you start from A to Z with 0, you will have Z at 25th place. I know its confusing but we are not looking at the last place i.e 25 but we want to know how many alphabets there are and that is 26 from A-Z so take 26 for subtraction. Consider it as a rule of thumb if you want to.
Better hai ki bol do greater than 26 wale number ko mod 26 Kar na hai
I m sure u r GUJARATI...😁😁
Use mod 26
tezzzzz bola karo sirrrrrr plezz
Total 25 hai na?
What if number in addition comes 26??😳🙀🤔
Anyone listening De number stations?
decryption kyu nhi hai
If the added sum is "26" .... 26 is not great than 26... But we don't have any alphabet equal to 26 ... I mean Z is equal to 25... "
26 is equal to 26 so do subtraction 26-26=0 . 0 is assign to A alphabet