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Quantum-Computable One-Way Functions without One-Way Functions
- Award ID(s):
- 2145474
- PAR ID:
- 10657825
- Publisher / Repository:
- ACM
- Date Published:
- Page Range / eLocation ID:
- 189 to 200
- Format(s):
- Medium: X
- Sponsoring Org:
- National Science Foundation
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null (Ed.)We prove that the equivalence of two fundamental problems in the theory of computing. For every polynomial t(n) ≥ (1 + ε)n, ε > 0, the following are equivalent: • One-way functions exists (which in turn is equivalent to the existence of secure private-key encryption schemes, digital signatures, pseudorandom generators, pseudorandom functions, commitment schemes, and more); • t-time bounded Kolmogorov Complexity, Kt, is mildly hard-on-average (i.e., there exists a polynomial p(n) > 0 such that no PPT algorithm can compute Kt, for more than a 1 − 1/p(n) fraction of n-bit strings). In doing so, we present the first natural, and well-studied, computational problem characterizing the feasibility of the central private-key primitives and protocols in Cryptography.more » « less
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