The F Function of DES (Mangler Function)

[@oyeyeye]

hello sir, your teaching and presentation both are very good. you explained it so well. thank you.

[@KanishkaGrover]

Thank you for making us understand the f Function.

[@TheJayRamKumar]

thanks you sir, you helped me so much, please try to upload daily if you can. thank you again 🙏🙏

[@ChandanKSwain]

Everything is okay, but why you are skipping the second XOR that present in the mangler function????Why you are not talking about that.....!

[@manunitedforever8865]

In the S1 box who sets the numbers in that column and row form, is it any arbitrary arrangement or that arrangement is generally used in practice?? anyways good teaching

[@CellerCity]

Mind blowing explanation!

[@phaniharshithkotturu1669]

Video Starts at 0:56

[@abdishakurmohamoudabdi1625]

thank you sir you helped me so much best place i can learn from thanks sir

[@karthikapragadeeswari1510]

sir, very nice and very clear but how the values are in the s box, u have explained for 6 but how the values in s box?

[@naji7709]

Sir , why there is an extra xor function after the trnasposition, it has only one input right, why is it needed there. please explain

[@aryangupta4372]

did you find the answer for this? pls help i have an exam tomorrow

[@ashwinivaidya4183]

You are the best neso ❤❤❤

[@shashikalasewwandi2818]

thank you so much this is very clear

[@pavanijadav4156]

You are too good sir...thank u so muchh

[@jihedsaadouni9354]

your are magicall simply magicall👋👋

[@taniajebin8437]

You are superb

[@tineshsakthir9874]

Sir , what are those values inside the S- boxes?

[@_PremKharat]

Just by default values used by that particular s box Our main goal is to convert 48 bits to 32 bits thats it.

[@Ayush-uz8od]

@@_PremKharat do they give the questions in examination or just theory cuz its so huge

[@MrityunjaySinghVictor]

THANK YOU

[@Saynotocramming]

Sir will the tables of values given in exams?

[@devmahad]

thanks :)

[@ajinkyakale9907]

is there another xor function after p-box permutation?

[@azuboof]

yes

[@azuboof]

the p box xor with left half, incase ur asking 2 times as seen in figure no only once, the result of p box xor with left half which gives the right half

[@harshagarwal2909]

In this diagram of Single round the key is shown of 32 & 32 but later only left shift occurs so where is permitted choice 1 step ???

[@aysheri8321]

it should be 28 & 28 ig

[@zainabdeen9849]

Can anyone tell me why it took 0-15 in rows for Box S1?

[@manitpaulose]

Because the S box is suppose to reduce 6 bits to 4 bits. The Max we can represent with 4 bits is 15 (1111).