Cryptography MCQ set number 00564

1. If f(x)=x7+x5+x4+x3+x+1 and g(x)=x3+x+1, find f(x) – g(x). a) x7+x5+x4+x3 b) x6+x4+x2+x c) x4+x2+x+1 d) x7+x5+x4 AnswerAnswer: d [Reason:] Perform Modular subtraction. 2. 5/3 mod 7 = a) 2 b) 3 c) 4 d) 5 AnswerAnswer: c [Reason:] 5/3 mod 7 = (5×3-1) mod 7 = (5×5) mod 7 = 4. 3. The polynomial…

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