Question: In Section 12.4.1 we showed an attack on the plain RSA signature scheme in which an attacker forges a signature on an arbitrary message using

In Section 12.4.1 we showed an attack on the plain RSA signature scheme in which an attacker forges a signature on an arbitrary message using two signing queries. Show how an attacker can forge a signature on an arbitrary message using a single signing query.

You should forge on any m Z_N .

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