Calculate an rsa signature on a long message

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Reference no: EM1364207

We know that doing a signature with RSA alone on a long message would be too slow. Suppose we could do division quickly. Would it be reasonable to compute an RSA signature on a long message by ?rst computing what the message equals mod n, for some ?xed n and then signing this computed value only. Why or why not?

Reference no: EM1364207

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