Aisha

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seen Nov 13 '12 at 18:35

Nov
13
comment Why shouldn't one build a MAC by XORing multiple message blocks?
Assuming we have another message P,which consist of blocks p1,p2...p3. what u get when u XOR message blocks p1,p2...pn will differ from XORing message blocks m1,m2...mn right? so how do u mean MAC of 2 different messages will be the same