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Oblivious Transfer (OT) is a fundamental cryptographic protocol that finds a number of applications, in particular, as an essential building block for two-party and multi-party computation. We construct a round-optimal (2 rounds)…

Cryptography and Security · Computer Science 2017-10-24 Paulo S. L. M. Barreto , Bernardo David , Rafael Dowsley , Kirill Morozov , Anderson C. A. Nascimento

We present a new template for building oblivious transfer from quantum information that we call the "fixed basis" framework. Our framework departs from prior work (eg., Crepeau and Kilian, FOCS '88) by fixing the correct choice of…

Quantum Physics · Physics 2022-09-13 Amit Agarwal , James Bartusek , Dakshita Khurana , Nishant Kumar

Oblivious Transfer (OT) is a major primitive for secure multiparty computation. Indeed, combined with symmetric primitives along with garbled circuits, it allows any secure function evaluation between two parties. In this paper, we propose…

Cryptography and Security · Computer Science 2022-09-12 Slim Bettaieb , Loïc Bidoux , Olivier Blazy , Baptiste Cottier , David Pointcheval

This paper presents a new efficient protocol for k-out-of-n oblivious transfer which is a generalization of Parakh's 1-out-of-2 oblivious transfer protocol based on Diffie-Hellman key exchange. In the proposed protocol, the parties involved…

Cryptography and Security · Computer Science 2009-09-16 Ashwin Jain , C Hari

Key-exchange protocols have been overlooked as a possible means for implementing oblivious transfer (OT). In this paper we present a protocol for mutual exchange of secrets, 1-out-of-2 OT and coin flipping similar to Diffie-Hellman protocol…

Cryptography and Security · Computer Science 2008-01-10 Abhishek Parakh

Few primitives are as intertwined with the foundations of cryptography as Oblivious Transfer (OT). Not surprisingly, with the advent of quantum information processing, a major research path has emerged, aiming to minimize the requirements…

Quantum Physics · Physics 2025-06-18 Ricardo Faleiro , Manuel Goulão , Leonardo Novo , Emmanuel Zambrini Cruzeiro

Oblivious Transfer (OT) is a fundamental cryptographic protocol with applications in secure Multi-Party Computation, Federated Learning, and Private Set Intersection. With the advent of quantum computing, it is crucial to develop…

Cryptography and Security · Computer Science 2024-08-27 Aydin Abadi , Yvo Desmedt

As database deployments shift toward cloud platforms and edge devices, thin clients need to securely retrieve sensitive records without leaking their query intent or metadata to the proxies that mediate access. Oblivious Transfer (OT) is a…

Cryptography and Security · Computer Science 2026-03-17 Aydin Abadi , Yvo Desmedt

Privacy is a major concern in designing any cryptographic primitive when frequent transactions are done electronically. During electronic transactions, people reveal their personal data into several servers and believe that this information…

Cryptography and Security · Computer Science 2017-11-30 Vandana Guleria , Ratna Dutta

Based on quantum entanglement, an all-or-nothing oblivious transfer protocol is proposed and is proven to be secure. The distinct merit of the present protocol lies in that it is not based on quantum bit commitment. More intriguingly, this…

Quantum Physics · Physics 2007-05-23 Guang Ping He , Z. D. Wang

We present an oblivious transfer (OT) protocol that combines the OT scheme of Chou and Orlandi together with thesupersingular isogeny Diffie-Hellman (SIDH) primitive of De Feo, Jao, and Pl\^ut. Our construction is a candidate for…

Cryptography and Security · Computer Science 2021-01-14 Paulo Barreto , Anderson Nascimento , Glaucio Oliveira , Waldyr Benits

Oblivious transfer (OT) is an important tool in cryptography. It serves as a subroutine to other complex procedures of both theoretical and practical significance. Common attribute of OT protocols is that one party (Alice) has to send a…

Quantum Physics · Physics 2018-01-26 Martin Plesch , Marcin Pawlowski , Matej Pivoluska

Oblivious transfer is an important primitive in modern cryptography. Applications include secure multiparty computation, oblivious sampling, e-voting, and signatures. Information-theoretically secure perfect 1-out-of 2 oblivious transfer is…

Commitment schemes are essential to many cryptographic protocols and schemes with applications that include privacy-preserving computation on data, privacy-preserving authentication, and, in particular, oblivious transfer protocols. For…

Cryptography and Security · Computer Science 2025-02-17 Thomas Lorünser , Sebastian Ramacher , Federico Valbusa

We present a robust and composable device-independent (DI) quantum protocol between two parties for oblivious transfer (OT) using Magic Square devices in the bounded storage model in which the (honest and cheating) devices and parties have…

Quantum Physics · Physics 2026-04-13 Rishabh Batra , Sayantan Chakraborty , Rahul Jain , Upendra Kapshikar

Oblivious transfer protocols (R-OT and OT$_{1}^{2}$) are presented based on non-orthogonal states transmission, and the bit commitment protocols on the top of OT$_{1}^{2}$ are constructed. Although these OT protocols are all unconditional…

Quantum Physics · Physics 2017-03-21 Li Yang

Oblivious transfer protocol is a basic building block in cryptography and is used to transfer information from a sender to a receiver in such a way that, at the end of the protocol, the sender does not know if the receiver got the message…

Quantum Physics · Physics 2015-06-19 A. Souto , P. Mateus , P. Adão , N. Paunković

We present simple protocols for oblivious transfer and password-based identification which are secure against general attacks in the noisy-quantum-storage model as defined in [KWW09]. We argue that a technical tool from [KWW09] suffices to…

Quantum Physics · Physics 2015-03-13 Christian Schaffner

Oblivious transfer is a fundamental cryptographic primitive which is useful for secure multiparty computation. There are several variants of oblivious transfer. We consider 1 out of 2 oblivious transfer, where a sender sends two bits of…

Quantum Physics · Physics 2025-11-12 David Reichmuth , Ittoop Vergheese Puthoor , Petros Wallden , Erika Andersson

We present a device independently secure quantum scheme for p-threshold all-or-nothing oblivious transfer. Novelty of the scheme is that, its security does not depend -- unlike the usual case -- on any quantum bit commitment protocol,…

Quantum Physics · Physics 2021-11-17 Ramij Rahaman
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