I dont know how to do Q2.

Q1:

2. Let K1 and K2 be the same as Q.1. Assume an 8-bit plaintext P is 01110010. Follow the following steps for SDES encryption (19 marks): A. Apply the initial permutation IP on P. B. Expand and permute the right half R of the output from step A using E/P. C. XOR the output from step B with K1. D. Input left half of the output from step C into S-Box S0 and right half into S-Box S1. E. Rearrange outputs from step D using P4. F. XOR the output from step E with the left half L of the output from step A. Now we have this output as the left half and the original R as the right half. G. Switch the halves and redo the steps B to F with the new right half and K2. H. Input the output from step G as left half and the output from step F as right half into the inverse IP. This will be the ciphertext. 1. Assume the 10-bit key K is 1010000010. Follow the following the steps for generating the two 8-bit round keys K1 and K2 (5 marks): A. Rearrange K using P10. B. Left shift by 1 position both the left and right halves. C. Rearrange the halves with P8 to produce K1. D. Left shift by 2 positions the left and right halves. E. Rearrange the halves with P8 to produce K2. A. After Rearranging K using P10 (3, 5, 2, 7, 4, 10, 1, 9, 8, 6} 1000001100 B. After Left shifting both halves by 1 00000 & 11000 C. Rearranging using P8 (6, 3, 7, 4, 8, 5, 10, 9} K1 = 10100000 D. After left shifting both halves by 2 10000 & 01000 E. Rearranging using P8 (6, 3, 7, 4, 8, 5, 10, 9} K2 = 00100000 2. Let K1 and K2 be the same as Q.1. Assume an 8-bit plaintext P is 01110010. Follow the following steps for SDES encryption (19 marks): A. Apply the initial permutation IP on P. B. Expand and permute the right half R of the output from step A using E/P. C. XOR the output from step B with K1. D. Input left half of the output from step C into S-Box S0 and right half into S-Box S1. E. Rearrange outputs from step D using P4. F. XOR the output from step E with the left half L of the output from step A. Now we have this output as the left half and the original R as the right half. G. Switch the halves and redo the steps B to F with the new right half and K2. H. Input the output from step G as left half and the output from step F as right half into the inverse IP. This will be the ciphertext. 1. Assume the 10-bit key K is 1010000010. Follow the following the steps for generating the two 8-bit round keys K1 and K2 (5 marks): A. Rearrange K using P10. B. Left shift by 1 position both the left and right halves. C. Rearrange the halves with P8 to produce K1. D. Left shift by 2 positions the left and right halves. E. Rearrange the halves with P8 to produce K2. A. After Rearranging K using P10 (3, 5, 2, 7, 4, 10, 1, 9, 8, 6} 1000001100 B. After Left shifting both halves by 1 00000 & 11000 C. Rearranging using P8 (6, 3, 7, 4, 8, 5, 10, 9} K1 = 10100000 D. After left shifting both halves by 2 10000 & 01000 E. Rearranging using P8 (6, 3, 7, 4, 8, 5, 10, 9} K2 = 00100000