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QUESTION 4 In DES what is the fundamental role of the following steps in the encryption algorithm? (one word answer) a. Expand box? b. S-box?

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QUESTION 4 In DES what is the fundamental role of the following steps in the encryption algorithm? (one word answer) a. Expand box? b. S-box? c. P-box? QUESTION 4 In DES what is the fundamental role of the following steps in the encryption algorithm? (one word answer) a. Expand box? b. S-box? c. P-box

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