Question: Use the S-DES calculator spreadsheet to populate the table below Key Plaintext Ciphertext A 0000000000 01010101 B 0000000001 01010101 C 0000000000 01010100 D 0000000001 01010100

  1. Use the S-DES calculator spreadsheet to populate the table below

Key

Plaintext

Ciphertext

A

0000000000

01010101

B

0000000001

01010101

C

0000000000

01010100

D

0000000001

01010100

  1. Notice that in A and B the plaintexts are the same but the keys are different in 1-bit. What can you tell about the relationships between their corresponding ciphertexts? Do you see where the ciphertext starts to diverge?

  1. Notice that in A and C the keys are the same but the plaintexts are different in 1-bit. What can you tell about the relationships between the corresponding ciphertexts? Do you see where the ciphertext starts to diverge?

  1. Notice that in A and D the keys are different in 1-bit and the plaintexts are different in 1-bit. What can you tell about the relationships between the corresponding ciphertexts? Do you see where the ciphertext starts to diverge?

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