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Якщо ключова функція Fk(x)=k⊕x, то який експеримент розрізнення доводить, що F не є псевдовипадковою функцією?
Given access to anoracle g, query y=g(0…0) and y′=g(0…0). Then output 1 if and only if y=y′
Given access to an
oracle
Given access to anoracle g, query y=g(0…0). Then output 1 if and only if the first bitof y is equal to 1
(0…0). Then output 1 if and only if the first bit
of
Given access to anoracle g, query g(0…0). Then output 1 because we now have the key
Given access to anoracle g, query y0=g(0…0) and y1=g(1…1). Then output 1 if and only if y0⊕y1=1…1
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