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Please draw out the libraries and the Dec algorithm, as well the explanation for both! Thank you, I will rate! Let F be a secure

Please draw out the libraries and the Dec algorithm, as well the explanation for both! Thank you, I will rate!

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Let F be a secure PRP with block length n+. Consider the following encryption scheme: (a) Write the corresponding Dec algorithm. (b) Prove that the scheme has CPA\$ security

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