Random Oracles and Non-Uniformity

  title={Random Oracles and Non-Uniformity},
  author={Sandro Coretti and Yevgeniy Dodis and Siyao Guo and John P. Steinberger},
  booktitle={IACR Cryptology ePrint Archive},
We revisit security proofs for various cryptographic primitives in the auxiliary-input randomoracle model (AI-ROM), in which an attacker A can compute arbitrary S bits of leakage about the random oracle O before attacking the system and then use additional T oracle queries to O during the attack. This model has natural applications in settings where traditional randomoracle proofs are not useful: (a) security against non-uniform attackers; (b) security against preprocessing. We obtain a number… CONTINUE READING

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