Question: Suppose the DES mangler function ( or function F ) mapped every 3 2 - bit value to zero regardless of the value of its

Suppose the DES mangler function

(

or function F

)

mapped every

32 -

bit value to zero regardless of the value of its input. How does the output after Round

16

of DES compare to the input at the start of Round

1

of DES? Show your work and provide appropriate explanations. You may reference the Feistel encryption process diagram below for your analysis. Assuming the DES mangler function

(

or function F

)

mapped every

32 -

bit value to zero regardless of the value of the input. How does the output after Round

16

of DES compare to the input at the start of Round

1

of DES? Show your work and explain how you arrived at your answer. You may reference the Feistel encryption process diagram for your analysis.

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