Quantum Privacy-Preserving Price E-Negotiation

TL;DR

This paper introduces a novel quantum protocol for privacy-preserving price negotiations in e-commerce, ensuring security and reducing communication complexity compared to classical methods.

Contribution

It proposes a new quantum solution for secure price e-negotiation using oracle operations and quantum counting, enhancing privacy and efficiency.

Findings

Guarantees correctness and privacy of negotiations

Achieves lower communication complexity than classical methods

Provides an efficient quantum approach to secure e-negotiation

Abstract

Privacy-preserving price e-negotiation (3PEN) is an important topic of secure multi-party computation (SMC) in the electronic commerce field, and the key point of its security is to guarantee the privacy of seller's and buyer's prices. In this study, a novel and efficient quantum solution to the 3PEN problem is proposed, where the oracle operation and the qubit comparator are utilized to obtain the comparative results of buyer's and seller's prices, and then quantum counting is executed to summarize the total number of products which meets the trading conditions. Analysis shows that our solution not only guarantees the correctness and the privacy of 3PEN, but also has lower communication complexity than those classical ones.