Only for Degree students who can use scientific calculator in the exam (For mod calculation ) , First in the calculator change the mode to Base-N then use this formula That is - A-A /B x B , for example 182-182 Divide by 26 * 26 = 0
sir if we want to get a mod of 275 we can simply multiply 26 by the value which can give answer nearest to 275 for example. 26*10=260 and than add remaining numbers to the the value i.e 260+15 = 275 so we can easily find the mod of 275 which is 15
I need solutions problem You are presented with a plaintext message t = (t1, t2, ... ) where ti is a letter in alphabet and invertible m × m matrix H, Hill cipher represents ti by numeric value xi ∈ Zn (Zn = {0,1, ... , n − 1}) and encrypts plaintext as c = H ∙ x (mod n), where x and c are plaintext and ciphertext column vectors. Similarly, c is decrypted as x = inverse(H) ∙ c (mod n). Describe a situation where cryptanalysis can be performed. What are the parameters what is needed to guess H? What matrix operation could be performed to recover H
what if the value is repeated in one column ? eg. TT ? can we replace it by TX like playfair matrix ? suppose place at ten [P] [A] [E] [T] [E] [L] [C] [A] [T] [N] is this correct or we have replace one T by X?
first explain that how we should pair/divide key length and how accordingly we need to make matrix for key length more than 9 letters example:- What will be the ciphered text if the string “HELLO” is given as input to the code of hill cipher with keyword as “SANFOUNDRY”?
Last point (padding x) is not clear can somebody explain ? How receiver know that padded alphabet is x or if it is understood that it always be x then easy to decipher furthermore there is no ciphering for spaces how receiver know where to put spaces ?
bhailog! last year mai cryptography mei fail hogaya tha.. iss saal fir aaya hu sirji ke bharose exam clear karne.. aur kon kon backlog wale hai bhai yaha?
1 doubt is still there, what if key is not fit in proper size of 2X2 or 3X3 matrix example like:- key= hey and for this we have to create 2X2 matrix, then what will be the 4th value is it x again? please reply sir.
Sir further explain the decryption part of hill ciphern and make a short video of Ploygram cipher Poly alphabet cipher with example Please as soon a possible
Sir yaha pe 187/26= 7.1923076 ayega aur usme se 7 minus kare to milega 0.1923076 aur usko 26 se multiply kare to milega 5.00000000006 aur apne isko 0 bata diya sir can you please help me with that
Please help.... For keyword, It is"Hill" thats why you took 2*2 matrix If it's a "Anotherbz" you can take 3*3 matrix But what if there is keyword won't don't fit any 2*2 or 3*3 matrix? Like "Corgy" how will you fit this keyword in matrix?
Superb explanation. Loved it. Students r blessed to have you as teacher
You are simply awesome Sir...Lots of love and respect from a final year engineering student
Oo bhai kyaa z a man and aagya h. Ek message ne dimag gumadiya
Bhot sahi samjaya yrr ❤️❤️
Awesome tarike se explain kiya hai... Colg wale ne bhi itna basically explain nhi kiya nice work bro
at 7:50
mod is simply reminder i.e. when 275 is divided by 26 we get 15 as reminder
and 182 divided by 26 we get 0 as reminder...
182 divide by 26 kia tu 7 arha hain 0 tu arha hai ni hain help krdo bhai guide krdoo
@@ibadshakil4051 brother we are talking about *reminder* here......
If we devide 182 by 26 then reminder will be 0...
@@creativeengineer832 bhai zero ni arha bhai 7 arha hain
@@creativeengineer832 jawab dey bhai jo app sy pucha hain chup hugayee hoo
@@ibadshakil4051 bhai aap remainder or quotient m confuse ho rhe ho.......
Sir you are doing really a hardwork .Thanks a lot to you too sir
Far better than my textbook!! Thanks for this. please keep making more such educative videos
Great Explanation...... Thank you soooo much sir............. From Pakistan.
Thank you so much sir 😊
Sir what about the decryption ?! Is there any other part ?
Thnx a lot sir pehle to mri smjh m hi nhi aa rha tha or ab to m khud ye topic easily pdha skta hu😅
OOO bhai !! respect sir😘👏
You have my respect for including that last doubt👏👏👏!! hats off!!
very much impressive way to discribe hill cipher
How to decrypt the cipher text using hill cipher ?? Can you please make video on it ?
Amazing Sir..... Love From Pakistan....... welldone sir.......
Jb menay white board dekha tu mjhay wakae pta chla k ya video bht kmal hunay valy ha.
love you bro oh yeah meri concept clear ho gaya
Sir vry vry thanks for your valuable videos which is helping every cse student like me 😊😊
Your explanation is very nice and your video very helpful in my exam
Thank you so much..😄
Kaash hamara teacher bhi apki tarah padata.
Sir you are great...! 😍😇TYSM 🙏
your explainations are the best and easily understandable... Thanks for the great Contents
Sir key hame own text se lena h??
Thanks for a being great instructor once again thank you so much sir😊
How to decode the message after encoding in Hill Cipher?
Superb explanation sir
Thank you so much sir! You're an inspiration for new tutors like me🙏💙💙💙
Only for Degree students who can use scientific calculator in the exam (For mod calculation ) , First in the calculator change the mode to Base-N then use this formula That is - A-A /B x B , for example 182-182 Divide by 26 * 26 = 0
Thank you Sir....ur video helping me most......last night before exam 😁😁
182 divide by 26 kia tu 7 arha hain 0 tu arha hai ni hain help krdo bhai guide krdoo
Thank u sir, u r the great👍
Yha Jo 275/26 ka mod means hota hai remainder. So don't need any complex calculation. Btw sir ek no. Hai video
Thank you Sir ..Well explained..
Superb explanation sir 😊😊
You gained a subscriber bro!!
Thankyou sir this video helped me a lot in my exam paper ...
Method of teaching is so amazing.....Thank you sir!
Awesome explaination sir👌👌👌👌👌
Best way to to teaching 👌❤️
Superb Bro Your way of Teaching is Outstanding
Great teaching you r the boss of teacher 🙏🙏🙏
I am happy that i finally understood both hill cipher and mod concept . Thank you sir :)
Thank you so much sir 😇🙏
means if we add x then we have to take the corresponding value of x = 23?
Thank you sir..please make videos on cloud computing and soft computing
Thanks for that mod explanation made it so helpful 😂🤣✌️
great explanation
what if we have an odd number of key?
tomorrow is my exam and I'm watching this tutorial at late night. Your videos are super helpful sir
what if 2 consecutive alphabet comes in the message? Is there any different rule for that or follow the same procedure
if we have key 2*2 can we have plain text as well 2*2 ...IS it necessary to be 2*1....
Superb sir
What to do if word choosen for encryption doesn't make square matrix
Awesome sir, thank you so much it's help a lot in exam.
sir if we want to get a mod of 275 we can simply multiply 26 by the value which can give answer nearest to 275 for example.
26*10=260
and than add remaining numbers to the the value
i.e 260+15 = 275
so we can easily find the mod of 275 which is 15
Thanks bhru
and what about 182??
Same@@abhineshtomar1308
What if the plain text is of *ODD* length? then should we add *x* with the last letter in the plain text matrix?
Please help
Any video regarding decryption of same example
I need solutions problem You are presented with a plaintext message t = (t1, t2, ... ) where ti is a letter in alphabet and invertible m × m matrix H, Hill cipher represents ti by numeric value xi ∈ Zn (Zn = {0,1, ... , n − 1}) and encrypts plaintext as c = H ∙ x (mod n), where x and c are plaintext and ciphertext column vectors. Similarly, c is decrypted as x = inverse(H) ∙ c (mod n). Describe a situation where cryptanalysis can be performed. What are the parameters what is needed to guess H? What matrix operation could be performed to recover H
what if the value is repeated in one column ? eg. TT ?
can we replace it by TX like playfair matrix ?
suppose place at ten
[P] [A] [E] [T] [E]
[L] [C] [A] [T] [N]
is this correct or we have replace one T by X?
We can take a=1, b=2, z=26
Thank you sir you’re the great 😀
what if the key is not in square matrix
Ek number explanation sir.
first explain that how we should pair/divide key length and how accordingly we need to make matrix for key length more than 9 letters
example:- What will be the ciphered text if the string “HELLO” is given as input to the code of hill cipher with keyword as “SANFOUNDRY”?
Sir thank you so much ❤BHT AchA smjhyaaa
Excellent explain sir
sir u r really great...thnx a lot sir
agar plain text ki length odd hai and key 2*2 hai to kaise hoga??
Why are all your videos i watch are made 5 yrs ago its funny 😂
Last point (padding x) is not clear can somebody explain ? How receiver know that padded alphabet is x or if it is understood that it always be x then easy to decipher furthermore there is no ciphering for spaces how receiver know where to put spaces ?
thanku so much sir
bhailog! last year mai cryptography mei fail hogaya tha.. iss saal fir aaya hu sirji ke bharose exam clear karne.. aur kon kon backlog wale hai bhai yaha?
how to find key matrix if we know cipher text and plain text
Superb😍
super sir love you
Thanks sir But I have a question, if our plaintext is in odd number and one word is left so in that case what we will do ?
at the end he has explained that
Thanku so much sir for make this video
sir, saat saat decyption bhi bata dijiye ,,, samjhane mein aur aasan aur authentic hoga
1 doubt is still there, what if key is not fit in proper size of 2X2 or 3X3 matrix example like:- key= hey and for this we have to create 2X2 matrix, then what will be the 4th value is it x again? please reply sir.
Thanks A Lot-Engineer
if key is of odd length??
Sir further explain the decryption part of hill ciphern and make a short video of
Ploygram cipher
Poly alphabet cipher with example
Please as soon a possible
What about rectangular matrix??
How can my friend decrypt the message?
Crime patrol ka next host
Sir yaha pe 187/26= 7.1923076 ayega aur usme se 7 minus kare to milega 0.1923076 aur usko 26 se multiply kare to milega 5.00000000006 aur apne isko 0 bata diya sir can you please help me with that
182 divide by 26 kia tu 7 arha hain 0 tu arha hai ni hain help krdo bhai guide krdoo
182 divide by 26 kia tu 7 arha hain 0 tu arha hai ni hain help krdo bhai guide krdoo
182 divide by 26 kia tu 7 arha hain 0 tu arha hai ni hain help krdo bhai guide krdoo plz yar guide krdo exam hai mera plz ajj
sir if im having a letter like munnar tha
en how to do??? because n is twice
Thank you for this lecture. But same doubt if the plain text is "short example fox" then what we instead of x
🤔what will happen whn the palin text is having odd number of letter ....🤔🤔
Key tumhare hath me hai na.. uske according bana dena
mod means that after division the remainder left is the ans
very nice explanation.
Hill Decryption b ki video dalo
Thanks a bunch sir
Sir, How space is treated, like there is space between two message but in cipher text space is not in consideration?
Please help....
For keyword,
It is"Hill" thats why you took 2*2 matrix
If it's a "Anotherbz" you can take 3*3 matrix
But what if there is keyword won't don't fit any 2*2 or 3*3 matrix? Like "Corgy" how will you fit this keyword in matrix?
did you find the answer?
Can you set an example for 3*3 matrix please
Thank you sir
Great 👍👍👍👍
if i have odd number .? then how will i make pair ??
sir in ciphers ka description bhi bano
love from kerala
aggae 3*3 ka matrix hoo to kaise solve karege