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Can someone please explain to me how the Cipher Feedback Mode works? From what I have read some examples have a shift register in its explanation but some examples don't. Is there two versions of CFB and what is the difference? What is and how does a shift register work?

The first picture shows the process without a shift register and the second picture uses a shift register.

Screenshots from the related video:

Also, in the explanation of AES on Wikipedia it says that the four steps sub bytes, shift rows, mix columns and round key addition is done in 14 cycles for a 256 bit key. Is that the case for the CFB mode as well or is that just for a different mode of operation?

Can someone please explain to me how the Cipher Feedback Mode works? From what I have read some examples have a shift register in its explanation but some examples don't. Is there two versions of CFB and what is the difference? What is and how does a shift register work?

The first picture shows the process without a shift register and the second picture uses a shift register.

Screenshots from the related video:

Also, in the explanation of AES on Wikipedia it says that the four steps sub bytes, shift rows, mix columns and round key addition is done in 14 cycles for a 256 bit key. Is that the case for the CFB mode as well or is that just for a different mode of operation?

Can someone please explain to me how the Cipher Feedback Mode works? From what I have read some examples have a shift register in its explanation but some examples don't. Is there two versions of CFB and what is the difference? What is and how does a shift register work?

The first picture shows the process without a shift register and the second picture uses a shift register. Link to the related video here.

Also, in the explanation of AES on Wikipedia it says that the four steps sub bytes, shift rows, mix columns and round key addition is done in 14 cycles for a 256 bit key. Is that the case for the CFB mode as well or is that just for a different mode of operation?

Tommy

Can someone please explain to me how the Cipher Feedback Mode works? From what I have read some examples have a shift register in its explanation but some examples don't. Is there two versions of CFB and what is the difference? What is and how does a shift register work?

The first picture shows the process without a shift register and the second picture uses a shift register.

Screenshots from the related video:

Also, in the explanation of AES on Wikipedia it says that the four steps sub bytes, shift rows, mix columns and round key addition is done in 14 cycles for a 256 bit key. Is that the case for the CFB mode as well or is that just for a different mode of operation?