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2. Let F be a PRF. Consider the following function F': F (x) = { Fk (x) F(x + 1) if x is even
2. Let F be a PRF. Consider the following function F': F (x) = { Fk (x) F(x + 1) if x is even if x is odd, Show that F' is not a PRF even though F is. As with the previous problem, construct a distinguisher and work out the two probability values.
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The question in the image states Question Description 2 Let F be a PRF Consider the following function F Fx Fx if x is even Fx1 if x is odd Show that ...
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Algebra Graduate Texts In Mathematics 73
Authors: Thomas W. Hungerford
8th Edition
978-0387905181, 0387905189
