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Consider the two S-boxes S1 and S2 of DES shown. Three hex digits (12 bits) are provided to these two S boxes. The higher order
Consider the two S-boxes S1 and S2 of DES shown. Three hex digits (12 bits) are provided to these two S boxes. The higher order six bits are fed to S1 and the lower order six bits are fed to S2. For the six bits input to S1, the first and last bits are used to select the row, and the middle four bits are used to select the column. Note that each S box has four rows numbered 0, 1.2, and 3 and sixteen columns numbered 0 to 15.So, two bits are sufficient to select a row, as 22-4 and four bits are sufficient to select a column, as 2-16. The output from each S box is a four bit binary number, which means that the output from each S box ranges from 0 to 15 S1 CO C1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 RO 15 12 8 2 4 9 17 5 11 314 10 0 6 13 R1 14 4 13 1 2 15 11 8 3 10 612 590 7 R2 0 15 7 4 14 2 13 1 10 6 12 119 5 3 8 R3 4 1 14 8 13 6 2 1115 1297 3105 0 2 colC1 C2 C3 C4 C5 C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 RO 13 8 10 1 3 15 4 2 11 6 7 125 14 9 R1 15 1 8 14 6 11 3 4 97 2 13 12 0 5 10 R2 0 147 11 10 4 13 1 5 8 12 693 215 R3 3 13 47 15 2 8 14 12 01106911 5 Given the 12 bit hex input of 63716-calculate the S1&S2 outputs. Express your answer in hexadecimal. O AA 0A3 0 78 O SA
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