Abstract
Interactive oracle proofs (IOPs) are a proof system model that combines features of interactive proofs (IPs) and probabilistically checkable proofs (PCPs). IOPs have prominent applications in complexity theory and cryptography, most notably to constructing succinct arguments. In this work, we study the limitations of IOPs, as well as their relation to those of PCPs. We present a versatile toolbox of IOP-to-IOP transformations containing tools for: (i) length and round reduction; (ii) improving completeness; and (iii) derandomization. We use this toolbox to establish several barriers for IOPs: Low-error IOPs can be transformed into low-error PCPs. In other words, interaction can be used to construct low-error PCPs; alternatively, low-error IOPs are as hard to construct as low-error PCPs. This relates IOPs to PCPs in the regime of the sliding scale conjecture for inverse-polynomial soundness error.Limitations of quasilinear-size IOPs for 3SAT with small soundness error.Limitations of IOPs where query complexity is much smaller than round complexity.Limitations of binary-alphabet constant-query IOPs. We believe that our toolbox will prove useful to establish additional barriers beyond our work.
Original language | English |
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Title of host publication | Theory of Cryptography - 20th International Conference, TCC 2022, Proceedings |
Editors | Eike Kiltz, Vinod Vaikuntanathan |
Publisher | Springer Science and Business Media Deutschland GmbH |
Pages | 447-466 |
Number of pages | 20 |
ISBN (Print) | 9783031223174 |
DOIs | |
State | Published - 2022 |
Event | 20th Theory of Cryptography Conference, TCC 2022 - Chicago, United States Duration: 7 Nov 2022 → 10 Nov 2022 |
Publication series
Name | Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) |
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Volume | 13747 LNCS |
ISSN (Print) | 0302-9743 |
ISSN (Electronic) | 1611-3349 |
Conference
Conference | 20th Theory of Cryptography Conference, TCC 2022 |
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Country/Territory | United States |
City | Chicago |
Period | 7/11/22 → 10/11/22 |
Bibliographical note
Publisher Copyright:© 2022, The Author(s), under exclusive license to Springer Nature Switzerland AG.
Keywords
- Interactive oracle proofs
- Lower bounds
- Probabilistically checkable proofs