Question: 1. For the given plaintext, what would be the state(intermediate cipher) after the first round of DES? A plaintext block right after the initial permutation

1. For the given plaintext, what would be the state(intermediate cipher) after the first round of DES?

A plaintext block right after the initial permutation

(01010000 01001100 01000001 01001001 0100110 01010100 01000101 01011000)

48 bit sub-key for the first round

(11010111 00001010 01011101 00100010 10000011 11010101)

2. For the given plaintext, what would be the state(intermediate cipher) after the first round of AES? Show the value of C0.

A ciphertext block right after the first key addition layer

(01000011 01001001 01010000 01001000 01000101 01010010 01010100 01000101 01011000 01010100 01111111 01000010 01001100 01001111 01000011 01001011)

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