Private information comparison method based on continuous variable ionic state

Abstract

The invention belongs to the field of quantum communication and quantum cryptography, and particularly relates to a private information comparison method based on a continuous variable ionic state. The method comprises the following steps: initializing a system; the third party prepares two pairs of continuous variable quantum entangled states, preprocesses the continuous variable quantum entangled states and sends corresponding particles to the participants; the participant encodes the preprocessed corresponding particles and sends the encoded particles to the third party; the third party processes the corresponding particles to obtain a first classical measurement result and a second classical measurement result; the third party carries out safety monitoring according to the first classical measurement result and the second classical measurement result, if the safety monitoring is passed, private information comparison is completed according to the first classical measurement result and the second classical measurement result, and a comparison result is published, otherwise, system initialization is returned; according to the method, external attacks and internal attacks can be effectively resisted, the security and correctness of the protocol are ensured, quantum resources can be prepared, unified operation and measurement can be realized, and the method has higher practicability.

Description

technical field [0001] The invention belongs to the fields of quantum communication and quantum cryptography, in particular to a private information comparison method based on continuous variable ion states. Background technique [0002] With the rapid development of the Internet of Things, mobile computing, big data and cloud computing, people's lifestyles have also undergone great changes. These technologies propose new modes of collection, storage, dissemination, and information processing that greatly facilitate society as a whole. In order to share the resources provided by these different technologies, cooperative computing between different organizations or individuals is becoming more and more common. Owners of different data types combine resources through collaborative computing without revealing their own secret data, and thereby gain more valuable information. For example, data collected from different detection devices in an IoT system can be aggregated to gen...

AI Technical Summary

Problems solved by technology

Most of the current QPC protocols are in theoretical research, because the quantum resources used in these protocols, whether highly entangled particles or high-dimensional particles, are difficult to prepare in actual experiments

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