Prove this theorem, A private-key encryption scheme II =

Prove this theorem

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Reference no: EM132117260

This question from introduction to modern cryptography book

Prove this theorem

A private-key encryption scheme II = (Gen, Enc, Dec) has indistinguishabl-e -multiple encryptions in the presence of an eavesdropper if for all probabilistic polynomial-time adversaries A there exists a negligible function neg I such that

- Pr [PrivK A,II (n) = 1 ] J <= 1/2 + negl(n),

where the probability is taken over the random coins used by A, as well as the random coins used in the experiment (for choosing the key and the random · bit b, as well as for the encryption itself)

Reference no: EM132117260

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