Results 41 to 50 of about 5,815,691 (236)

Oblivious Transfer Protocol for Confidentiality Query of Blockchain Data [PDF]

open access: yesJisuanji gongcheng, 2022
During the data storage and query of a blockchain, owing to the transparency and openness of the blockchain, all users of a network may obtain information regarding the inquirer;thus, confidential information regarding the inquirer may be exposed.This ...
LIU Xin, HU Xiangyu, XU Gang, CHEN Xiubo
doaj   +1 more source

Efficient oblivious transfer with membership verification

open access: yesInternational Journal of Distributed Sensor Networks, 2019
In this article, we introduce a new concept of oblivious transfer with membership verification that allows any legitimate group users to obtain services from a service provider in an oblivious manner.
Weiwei Liu, Da-Zhi Sun, Yangguang Tian
doaj   +1 more source

On the Reversibility of Oblivious Transfer [PDF]

open access: yes, 2007
A(2 1)-OT2, (one-out-of-two Bit Oblivious Transfer) is a technique by which a party S owning two secret bits b0, b1, can transfer one of them bc, to another party R, who chooses c. This is done in a way that does not release any bias about bt to R nor any bias about c to S.
Claude Crépeau, Miklos Santha
openaire   +2 more sources

Universally Composable Oblivious Transfer with Low Communication

open access: yesApplied Sciences, 2023
In this paper, a universally composable 1-out-of-N oblivious transfer protocol with low communication is built. This protocol obtained full simulation security based on the modulo learning with rounding (Mod-LWR) assumption.
Jiashuo Song   +5 more
doaj   +1 more source

Oblivious Transfer and Quantum Channels [PDF]

open access: yes2006 IEEE Information Theory Workshop, 2006
We show that oblivious transfer can be seen as the classical analogue to a quantum channel in the same sense as non-local boxes are for maximally entangled qubits.
Nicolas Gisin   +4 more
openaire   +3 more sources

Oblivious-Transfer Amplification [PDF]

open access: yes, 2007
Oblivious transfer is a primitive of paramount importance in cryptography or, more precisely, two- and multi-party computation due to its universality. Unfortunately, oblivious transfer cannot be achieved in an unconditionally secure way for both parties from scratch.
openaire   +4 more sources

On Distributed Oblivious Transfer [PDF]

open access: yes, 2007
This paper is about unconditionally secure distributed protocols for oblivious transfer, as proposed by Naor and Pinkas and generalized by Blundo et al. In this setting a Sender has ζ secrets and a Receiver is interested in one of them.
Preneel, Bart   +2 more
core   +1 more source

On the foundations of oblivious transfer [PDF]

open access: yes, 1998
We show that oblivious transfer can be based on a very general notion of asymmetric information difference. We investigate a Universal Oblivious Transfer, denoted UOT(X, Y), that gives Bob the freedom to access Alice's input X in an arbitrary way as long as he does not obtain full information about X.
openaire   +2 more sources

Equivocable Oblivious Transfer [PDF]

open access: yes, 1996
We analyze and enhance Oblivious Transfer (OT) protocols to accommodate security against adaptive attacks. Previous analysis has been static in nature, treating the security of Alice and the security of Bob as separate cases, determined in advance.
openaire   +1 more source

The Simplest Protocol for Oblivious Transfer [PDF]

open access: yes, 2015
Oblivious Transfer (OT) is the fundamental building block of cryptographic protocols. In this paper we describe the simplest and most efficient protocol for 1-out-of-n OT to date, which is obtained by tweaking the Diffie-Hellman key-exchange protocol. The protocol achieves UC-security against active and adaptive corruptions in the random oracle model ...
Tung Chou, Claudio Orlandi
openaire   +4 more sources

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