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Question

In affine block cipher systems if f(m)=Am + t, what is f(m1+m2+m3) ?

a.

f(m1) + f(m2) + f(m3) + t

b.

f(m1) + f(m2) + f(m3) +2t

c.

f(m1) + f(m2) + f(m3)

d.

2(f(m1) + f(m2) + f(m3))

Answer: (c).f(m1) + f(m2) + f(m3)

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Q. In affine block cipher systems if f(m)=Am + t, what is f(m1+m2+m3) ?

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