Rigorous Time/Space Trade-offs for Inverting Functions

  • Authors:
  • Amos Fiat;Moni Naor

  • Affiliations:
  • -;-

  • Venue:
  • SIAM Journal on Computing
  • Year:
  • 1999

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Abstract

We provide rigorous time/space trade-offs for inverting any function. Given a function f, we give a time/space trade-off of T S2 = N3 q(f), where q(f) is the probability that two random elements (taken with replacement) are mapped to the same image under f. We also give a more general trade-off, T S3 = N3, that can invert any function at any point.