Playfair Cipher (Solved Question)

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Network Security: Playfair Cipher (Solved Question)
Topics discussed:
1) Solved question using Playfair cipher for the plaintext “Hide the gold under the carpet” using the keyword “Neso Academy”.
2) Understanding the rules for encryption using Playfair ciphering technique with examples.
3) Generation of ciphertext with the help of the 5x5 matrix using Playfair cipher.
4) Homework question to decrypt the ciphertext “ODZFQSEZSONTSW” using Playfair technique with the keyword “Neso App”.

Music:
Axol x Alex Skrindo - You [NCS Release]

#NetworkSecurityByNeso #Cryptography #NetworkSecurity #PlayfairCipher

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The Ans is : "YOU ARE AWESOME", last letter will be x which is a filler,
KEEP IN MIND
actually it is not exactly the same as encryption, the swap for rectangle is same, but for same row and same column, decryption is the opposite of encryption, so go left instead of right, and go up instead of down,

nimishsahu

answer for this question is -- YOUAREAWESOMEX
Decryption Algorithm -
if pair in same row - then pick left element
if pair in same column - then pick upper element element
if pair in diagonal - then pick oppsite side element

Regards,
Sagar Rajkumar Gupta

sagargupta

Solution of the homework problem : YOU ARE AWESOME ✨

tanyachabbra

YOU ARE AWESOME
so are you💫
Thank you for the compliment ❤😊

kathakalidas

"you are awesome", a nice message!

AimaAbid-dhcz

I like the tutorial as this shows the methods for using the Playfair Cipher, but I like the use of a grid which includes both letters and numbers, as depicted in Martin Gardner's book "Codes, Ciphers, And Secret Writing".

jeffreyweaver

ENCRYPTION:
same row : down turn and wrap around
same columns : right turn and wrap around
Rectangle : swap
DECRYPTION :
same row : up turn and wrap around
same columns : left turn and wrap around
Rectangle : swap
thats why the Answer is : YOU ARE ASEWOME

m_jashwanth_

sir i have a question that what if we encript with i and description time confused what it is i or j

RighttoInformationAct

What if we get digram "ij" or "ji"?

_soundwave_

What if I and J both are there in keyword, then also would you keep them in same box, Or worst what If only I or J is present in keyword

kiranchowdary

If I or J comes in the keyword itself, then what pair are we gonna make??
coz 1 pair is mandatory as it has 25 alphabets only??

vibhusati

what about ij ? same row same column eg jinx i want to encrypt

HDSV

Atlast X is coming so the answer is YOU ARE AWESOMEX

bishalbehera

For which class is this, is this useful for btech but I watch whole video I liked it I understand nicely.Thank you 😀

JayaPrakash-zkep

IF in Plain text there is two XX consecutively, So in that case what will be the filler letter ? Please someone respond

rupok

"YOU ARE AWESOME"

Yes I'm awesome. 🥺🥺🥺

shingiraimbaimbai

Sir, if the last letter is left alone, I searched on website they're using 'z' as the filler character. What do we have to use 'x' or 'z' ??
Sir please clear mu doubt ASAP ?? 🙏

friendshipforever

plss upload all the units in cryptography

_s.akshaya_cse

The answer is "You are awesome" .The filler x will be neglected.

akhilrajkumar

Looking for answer
Here it is= YOU ARE AWESOME

omkar

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