Assume we require only that an encryption scheme (Gen, Enc, Dec) with message space M satisfy the…

Assume we require only that an encryption scheme (Gen, Enc, Dec) with message space M satisfy the following: For all m ∈ M, we have  (This probability is taken over choice of the key as well as any randomness used during encryption.) Show that perfect secrecy can be achieved with |K|

 

 

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