Question: What makes a cipher a Fiestel cipher? Select one: a . It relies on multiple rounds of encryption with complex mathematical operations. b . It

What makes a cipher a "Fiestel cipher"?
Select one:
a. It relies on multiple rounds of encryption with complex mathematical operations.
b. It uses substitution boxes to scramble plaintext letters.
c. It requires a secret key that is used both for encryption and decryption.
d. It involves dividing the data block in half and applying founds of processing to each half.
What makes a cipher a "Fiestel cipher"? Select one: a. It

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