And once again, the NESO Academy comes to my rescue for college tests!!. I LOV Ethis channel. i remember watching it a LOT during my 3rd semester for DLD concepts. THANK YOU SO MUCHHH!!!
Great video, very nicely made. 1. I am still confused about the swap in Decryption where LD16 becomes LD17 (and RD16 becomes RD17). Isn't the only purpose of swap to change LD to RD and vice versa. Why LD16 is not becoming RD17. If an element is written on the left of the diagram, why is it still written "RD"17, instead of "LD"17? 2. Also, if in encryption, the last action was a 32 bit swap, to reverse this during decryption, why is the swap not the first thing to do?
I can answer your 2. But I'm also confused with 1. , as you can see we are using only one algorithm for both encoding and deciphering therefore the ciphertext is inputted into the left algorithm with reverse keys like 16,15,...1. and at last we had done swapping process ..
@@ritik84629 Firstly u should know that its used in DES, so u'll find the example there. 2ndly your'e here becuz your paid teacher can't even make you read this diagram. Go and bark in front of them
Apparently when half of a block is xored with the other half some sort of stream cipher is produced. And in a stream cipher encryption and decryption is the same.
And once again, the NESO Academy comes to my rescue for college tests!!. I LOV Ethis channel. i remember watching it a LOT during my 3rd semester for DLD concepts. THANK YOU SO MUCHHH!!!
Now I am wondering why my professor's lecture notes and neso lectures are exactly same. 😂😂
😂.. they both refer to the same textbook ,like me (still I used to look into yt😂)
same🙂
Your professor is smart! Why waste time making lecture notes when you can find them free on UA-cam.
The text books are the same
Same
Great explaining you did and thank you very much.
Legend, thank you so much! Better than 4 hours of my university lecture and practical!
Thank you very much. I needed to know this for class
Great video, very nicely made.
1. I am still confused about the swap in Decryption where LD16 becomes LD17 (and RD16 becomes RD17). Isn't the only purpose of swap to change LD to RD and vice versa. Why LD16 is not becoming RD17. If an element is written on the left of the diagram, why is it still written "RD"17, instead of "LD"17?
2. Also, if in encryption, the last action was a 32 bit swap, to reverse this during decryption, why is the swap not the first thing to do?
I can answer your 2. But I'm also confused with 1. , as you can see we are using only one algorithm for both encoding and deciphering therefore the ciphertext is inputted into the left algorithm with reverse keys like 16,15,...1. and at last we had done swapping process ..
Thanks, it was helpful
tq soo much sir
Thank you :)
sankalchand patel university ke jai hooooo
Thank you very much..
where are the examples bro? you just rambled on like my lecturer
RIGHT, WORST EXPLAINATION. JUST READING THE DIAGRAM
@@ritik84629 Firstly u should know that its used in DES, so u'll find the example there. 2ndly your'e here becuz your paid teacher can't even make you read this diagram. Go and bark in front of them
The Encryption Fig is wrong I guess, The LE1 will be created from RE0 after it passes through F and not Directly.
you're wrong , its correct as displayed in the video
why is the reverse of this algorithm true does any have some example or reference text for the proof?
Apparently when half of a block is xored with the other half some sort of stream cipher is produced. And in a stream cipher encryption and decryption is the same.
I can suggest you cryptography-and-network-security_-principles-and-practice-7th-global-edition book
sir please upload all network security chapters. I cant afford to purchase
Hello
Can you suggest a one best and simple subject for open electives in BscIt
I'm very confused..😢
Multimedia
Y only 16 steps in encrypted processs
It's example.....it doesn't matter it's 16 or not
10Q