Question: 1. This problem provides a numerical example of encryption using a one-round version of DES. We start with Lo 1100 1100 0000 0000 1100 1100

1. This problem provides a numerical example of encryption using a

1. This problem provides a numerical example of encryption using a one-round version of DES. We start with Lo 1100 1100 0000 0000 1100 1100 1111 1111 Ro 1111 0000 1010 1010 1111 0000 1010 1010. The first round key K-0000 1011 0000 00100110 0111 1001 1011 0100 1001 1010 0101. Please calculate the following values. (1) A Ex[Ro] XOR Ki (2) The output of S-boxes (3) LI and R Hint: Ex[] is the expansion permutation. Use the tables referenced in the DES at

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