(a) Compute one round of the following S-P Network (Gpts) The block size is 1 byte, with a single 4-bit S-box for both halves of the block. The P-box is given bit b becomes bit c, and so on until bit p of the input becomes bit a of the output. Given of the form (a, b, c, p), where bit a of the input becomes bit b of the output, in 0 1 2 3 4 5 67 8 9 A B C D EF out 9 3 7 E C A 1 8 4 0 F 6 B 2 D 5 P-box: (0,3,1,6,2,4,5,7) What is the output byte after a single round? input byte: OB A) 55 Answer: B) 96 C) D2 D) 71 E) FC (a) Compute one round of the following S-P Network (Gpts) The block size is 1 byte, with a single 4-bit S-box for both halves of the block. The P-box is given bit b becomes bit c, and so on until bit p of the input becomes bit a of the output. Given of the form (a, b, c, p), where bit a of the input becomes bit b of the output, in 0 1 2 3 4 5 67 8 9 A B C D EF out 9 3 7 E C A 1 8 4 0 F 6 B 2 D 5 P-box: (0,3,1,6,2,4,5,7) What is the output byte after a single round? input byte: OB A) 55 Answer: B) 96 C) D2 D) 71 E) FC