Cipher Feedback Mode - Applied Cryptography

[JamesJK]

@1:18 Do you mean "This looks very similar to CBC?" Or does it look similar to itself?

[HrWargoblin]

good video, but where do you get the x values from? If you have a message to encrypt, you only have the message blocks and the method to use. As much as I understood in CBC you can chose any value for the initialization vector. How it is here and how do you get x1, x2, etx.... ?

[muhammedozen]

Thank you sir. Can you clarify the length of messages m0, m1... As far as I understood we split the data into pieces of length s and perform that operation on each chunk of data. Is that right?

[calvinkoay]

so for CFB, the size of message block, s must be smaller than size of initialization vector (IV), n. I would like to ask what if the size of message block is larger than size of IV used? Can it still work for CFB?

[Darlyngtoo]

So each message (plaintext) are in s bits? And what happens to the rest of the output of the encrypted block (n-s)? Is it discarded?

[caliii]

How is IV encrypted with the KEY ?? What happens in that black box, that's whats confusing me

[borhansci]

Hatef Rad It's NOT similar to CBC !!! if you mean Cipher Block Chaining

[Lietuvis]

what is s? nice drawn, but poor explained, one example would explain everything