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Quantum Information Processing

Practical efficient 1-out-of-n quantum oblivious transfer protocol

Xue Jun Zhang, Chun‐Yan Wei, Su‐Juan Qin, Fei Gao, Qiaoyan Wen

Published Jan 31, 2023• 9 citations
Publisher
DOI
10.1007/s11128-022-03817-x

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Oblivious transfer (OT) is one of the most fundamental primitives in cryptography and is widely used in protocols for secure two-party and multi-party computation. As secure com-putation becomes more practical, the need for practical large scale oblivious transfer protocols is becoming more evident. Oblivious transfer extensions are protocols that enable a relatively small number of “base-OTs ” to be utilized to compute a very large number of OTs at low cost. In the semi-honest setting, Ishai et al. (CRYPTO 2003) presented an OT extension protocol for which the cost of each OT (beyond the base-OTs) is just a few hash function operations. In the malicious setting, Nielsen et al. (CRYPTO 2012) presented an efficient OT extension protocol for the setting of active adversaries, that is secure in the random oracle model. In this work, we present an OT extension protocol for the setting of malicious adversaries that is more efficient and uses less communication than previous works. In addition, our protocol can be proven secure in both the random oracle model, and in the standard model with a type of correlation robustness. Given the importance of OT in many secure computation protocols, increasing the efficiency of OT extensions is another important step forward to making secure
The Oblivious Transfer (OT) is a typical foundation agreement of secure multi-party computations. It can be used to solve the “ Millionaire” interesting question raised by the winner of the Turing Award in 1982, Mr. Yao , thus to build more complex secure multi-party computation protocol or to solve practical problems,such as electronic voting, elections, e-commerce. Using of the quantum channel and the principles of the quantum mechanics , Quantum Oblivious Transfer (QOT) can be solve the classic oblivious transfer problems. QOT can be achieved higher security and higher efficiency than the Classic Oblivious Transfer, while it also has a unique advantage in found eavesdropping. We had given a very novel QOT scheme based on three-particle entangled states. Although the use more particles , the process is better concise.
Oblivious Transfer(OT) protocol is an important primitive for designing cryptographic protocols.Designing OT protocol from bilinear pairing not only extends the bilinear pairing application but also increases the design technique of OT,which has important practical significance.This paper utilizes bilinear pairing to design a k-out-of-n OT protocol.The new protocol can protect both receiver’s privacy and sender’s privacy.The new protocol also can resist impersonation attacks,replay attacks and man-in-the-middle attacks.It can be used in an insecure channel,and the protocol has high efficiency.