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Yuval Ishai

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Secure Computation and Low-Complexity CryptographySecure Computation 20252025-08-04
Claims that semi-honest two‑party computation attains constant overhead for semi-honest 2PC by reducing general Boolean circuits to long‑string OTs and…
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Computing on Encrypted Data via Secret Dual CodesObfuscation2025-06-23
Claim: a secret-key scheme lets a client upload an encrypted large X and issue unbounded hidden queries q with sublinear download and only a short secret key…
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Locality-Preserving Hashing for Shifts with Connections to CryptographyITCS 20222022-01-31
Constructs a locality-preserving hash that reads D bits and achieves error delta ≈ 1/D^2 and proves that delta ≥ 1/D^2 via a birthday-paradox lower bound, so…
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Bounded indistinguishability for simple sourcesITCS 20222022-01-31
Shows both positive and negative Braverman-style claims: for constant-degree/local sources constant k suffices to fool simple distinguishers, and depth‑one…
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On the download rate of homomorphic secret sharingITCS 20222022-01-31
Proves optimal linear HSS for low-degree polynomials with exact rate 1 - d t / k, gives a PIR instantiation with upload cost n^{1/d} and that download rate…
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Efficient Zero Knowledge Protocols: The Modular Approach2nd ZKProof Workshop 20192019-04-10
Argues for separating an information-theoretic core from the cryptographic compilation layer so design and proofs stay exact and reusable, and claims this…
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Secure Multiparty Computation ICryptography Boot Camp 20152015-05-18
Covers when MPC is possible and how: information-theoretic security needs an honest majority (<k/2 corrupted) while computational security (via OT hybrid…
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Secure Multiparty Computation IICryptography Boot Camp 20152015-05-18
Uses a correlated randomness dealer that gives each party additive shares of a shifted truth table (random cyclic DX,DY) so online the parties exchange only…
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