Suppose RSA-OEAP is used, where the hash function G has a bug and outputs the all zero

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Suppose RSA-OEAP is used, where the hash function G has a bug and outputs the all zero string.
Show how an attacker can (with probability at least 1/2) break the IND-CCA security of RSA in this case.

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Fundamentals of Database Systems

ISBN: 978-0136086208

6th edition

Authors: Ramez Elmasri, Shamkant Navathe

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Posted Date: Mar 17, 2020 11:25 PM

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Suppose RSA-OEAP is used, where the hash function G has a bug and outputs the all zero

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Expert Answer:

The public key encryption INDCCA security model helps an adversary to achieve adaptive decryption of ciphertext of their choosing That is the opponent has oracle exposure to the decryption method whic... View the full answer

Fundamentals of Database Systems

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