Crypto Seminar - Barak Nehoran October 10, 2024 4:30pm — 5:30pm Location: In Person and Virtual - ET - Blelloch-Skees Conference Room, Gates 8115 and Zoom Speaker: BARAK NEHORAN , PhD Candidate, Department of Computer Science, Princeton University https://www.cs.princeton.edu/~bnehoran/ Oracle Separation Between Quantum Commitments and Quantum One-wayness We show that there exists a unitary quantum oracle relative to which quantum commitments exist but no (efficiently verifiable) one-way state generators exist. Both have been widely considered candidates for replacing one-way functions as the minimal assumption for cryptography—the weakest cryptographic assumption implied by all of computational cryptography. Recent work has shown that commitments can be constructed from one-way state generators, but the other direction has remained open. Our results rule out any black-box construction, and thus settle this crucial open problem, suggesting that quantum commitments (as well as its equivalency class of EFI pairs, quantum oblivious transfer, and secure quantum multiparty computation) appear to be strictly weakest among all known cryptographic primitives. Based on joint work with John Bostanci and Boyang Chen Reference Paper In Person and Zoom Participation. See announcement. Event Website: https://sites.google.com/view/crypto-seminar/home Add event to Google Add event to iCal
