HILL CIPHER 3X3 Matrix Example Encryption and decryption
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- čas přidán 19. 09. 2019
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My name is Abhishek Sharma.#abhics789
In this video, i have explained the concept of HILL CIPHER ENCRYPTION AND DECRYPTION with Numerical example in Cryptography and Network Security.
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in the key matrice g= 6 but sometimes u have written 16 and some times 6 in the key matrice
Wo 6 hi hoga by mistake 16 likhdia hoga ✌️
6 sae answer nahi aa raha bhai
its is 6 but u wrote 16 and then u againe changed it
because sometimes the value is 16 that means you decryption could be wrong but the method is correct...so Thank you
Saale G is 6
This was very helpful especially the whole process to find inverse(k). Thanks a lot
Very precise and useful... Thank you
ur expressing method is nice and we can get things easily thank you sir do have notes soft copy
You really put some hard work , other channels just leave the calculation and write answers directly
In Adj(k) you wrote n=7 in -197+26(n)
....
But n=8 just correct that one...that's all bhai
Tq so much bro,you make it , easy to understand
Thank you sir. Kal mera exam hai. bacha liya aapke video ne mujhe. :)
Very very nice explanation superb
hey what to do if there's whitespace between plaintext for e.g. i am ciphertext , so when encrypting do i need to ignore the whitespace?
What if our PT is of size l and key is of size m. how to do lxm?. Also what if our PT doesn't have enough characters to form a matrix?
Tip : skip this question.
abhishek sir what if the plain text is SAFEMESSAGE or SAFEMESSAG instead of SAFEMESSAGES ? it doesnt make exact 3x1 matrices then what to do ?
Is repeating letter allowed e.g if my plain text is "HEll". When i will divide it for 2x2 key matrix, will the repeating letter will be allowed?
What if determinant of key matrix is - ve? Should we add 26 ro make it +ve too?
very useful in life
Sir, can you share your notes that you have made, it will be very helpful.
Nice explanation 🥰🥰
thanks a lot sir
How to find inverse if we get the determinant of the key matrix an even number. I think we cant do the same process if we get determinant an even number where we cannot find inverse using this method. Can you do the same problem using key matrix[1 7;9 3].
Loved your video😍🥳
Bro..if we get 0 as determinant in decryption process??
Thankyou sir!
what happens if the mod exceeds 25 what am i supposed to do , reverse count from 'A' taking it as 26?
Sir is repeated letters allowed in plain text?
Sir g agr inverse ma determinent ki value minus ma ajaye PIR kya krengy
amazing
Can anyone help
What if plain text length is 5,7,etc -> say "Hello pi". What will the key matrix (nXn) be? should we fill p matrix or will it be (7X1)
Thanks brother lots of love from Pakistan 🇵🇰
hello, sir loved your explaination have some doubts if you dont mind clarifying
Thank you brother love from Pakistan ❤
hey abhishek can you tell me what to do if the determinent is negative?
determinant can never be negative, because we always take mod of the value, which is eventually positive.
Can you tell me the solution for this .
plain text: key
secret text :cryptography
Encrypt by hill cipher
sir uper key me ap ne N=13 LIKHA HE OR NECHE MARTIX ME WO 3 KESE HU GYA CAN U EXPLIAN IT PLZ?
Or agr determinants negative aa jaye to kya krenge
Hello boss , The value of determinant comes out to be 763
is the determinant right? my ans is 763
Encryption may aap 13 ki jagah 3 likhaa hai plzz see once and tell me how u wrote that 🙏🙏
nice tutorial i like it. i have a question which is 'when u use 3x3 matrix , if u have left one letter and how to encrypt it ? for example the plain text is UNSAFEMESSAGE and the key is z same u use one tutorial.'
add x
Sir mod 26 kyu kiya ???..
(ATM) I think there is a miss calculation.
196+26(7)
When 26*7=182 and remainder is -15
If I do 26*8=204 and remainder is 7.
Sir Please clearify
26*8=208
There is a miss calculation
✔️
16:00 the whole matrix & k inverse is wrong….appreciate your method sir bit don’t miss guide us wrong calculations. Students please correct the matrix.
what if agar hamara plain text "SAFEMESSAGE" hota to, vacant space mai kya dalte?
Add x if plain text is of odd number of characters
Can u say any easy process to find the multiple for getting 1243*5 mod 26=1
Yeah please tell it's very complex process
please suggest it
d-1 d inverse ki value 5 kesy aye hai please help
how to get d^-1 = 5
minor error in key matrix g is 6 somewhere its written 16 by mistake. also when removing minus signs n is not 7 it is 8
-197+26(8) = 11
Pls sir provide the notes...
@ 12:44 the product is -157 not -197 pls correct it sir
14:49 error yeh bro for 2nd Element it is 7*16 not 7*6 u wrote wrong so correct answer is 7*16-8*17= - 24 --> - ( - 24) = + 24
Thanks Boy
😂
in reversing( -ve) the value of n = 8
In some places you've taken the value 6, in some places you've taken value 16.
Calculations??
What if the value of determinant comes out to be negative?
It is always a positive value. If you are getting -3 then convert it into 3 out of the determinant.
Sir, what if the number of characters are in odd number then how can we define the last vector
Just add x
Adjoint Matrix calculated is wrong
aby pechy police lgi hai tery?? jo tez tez ja ra ha
Can u make vedios on data mining techniques
Will do that in future
In encryption 2st matix last 8,13,6
Bro plzz apni calculation shi se kara kro🤯
I am confused wheather i was doing wrong 😑
Bro for encryption for 1st SAF plzz check the C cause instead of 13 you have written 3, so I guess the answer will change
Sry it won't be changing cause multiplication will be 0 , I am sorry
at 12:38 how 4*16 - 13*17 = -197(it should be -157)
there are more calculation mistake in your video
What to do if.. Plain text is not i. The multiple of 3 for above 3X3 key mateix
Adjoint of k is wrong. Check ur numbers. The first element substracted result is wrong. The second element, u said something and u multiplied something else.
It will be 6 everywhere
I have written 16 sometimes
I have pinned the comment also✌️
Ambiguity in determinant of key confusing............
hmm
Too many mistakes in the calculations. Please correct.
n =8
calculator exist
was that supposed to be english?
sahi hai baki ke toh try kiya hua bhi nhi
best ho aap
oh bhai es ko solve karne ke liys kaafi time chahiye
Practice se ho jayega ✌️
Zaror reply dena sir g
Encryption m 13 ki jagah 3 likh diya h...
Haa yaar merko bhi same doubt hai 😭🙄
Its a mistake, galti se likh diya hai
wrong calculations sy shi answer waah bhai waah
This is difficult
Determinent is 1043 check again
1253
@@PujaKumari-yt8sq
How
Bro you've done a mistake in key Matrix, you've took 3 instead of 13 for "N",
Edit:it doesn't make difference anyway
منو عراقي
determinant is 763 not 1243, yeh meine calculator mein check kia
No, determinent value is 1243.
Take the proper values of the key matrix then u will get 1243 as value.
Bhai tu kar kya raha he
Bhai mod karneka method bata dete tho achha hotaa .... Sirf reminder boldiya apne 111% 26 = 15.7 ata he
bht mistakes hain ,,not recommended
You did mistake
encryption is easy but decryption is too complex. if i could get live assissttance.