Abstract:From the minimal assumption of post-quantum semi-honest oblivious transfers, we build the first ε-simulatable two-party computation (2PC) against quantum polynomial-time (QPT) adversaries that is both constant-round and black-box (for both the construction and security reduction). A recent work by Chia, Chung, Liu, and Yamakawa (FOCS'21) shows that post-quantum 2PC with standard simulation-based security is impossible in constant rounds, unless either NP ⊆ BQP or relying on non-black-box simulation. The ε-sim… Show more
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