Question: 9. Use the additive cipher with k=5 to encrypt the plaintext MTCS'. [10 Marks] 10. X=(101), is converted into Y=(145), where a and b are

9. Use the additive cipher with k=5 to encrypt the plaintext MTCS'. [10 Marks] 10. X=(101), is converted into Y=(145), where a and b are the bases of X and Y. The numbers X and Y can be of any of the Decimal, Binary, Octal or Hexadecimal bases. Find a and b. Justify your answer. [10 Marks]
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