A User Agent-Based Cloud Quantum Privacy Query Method

A technology of user agent and query method, applied in the direction of quantum computer, electronic digital data processing, instrument, etc., can solve the problems of not knowing whether the query result is correct, quantum privacy query scheme does not have multiple users querying database information, information leakage, etc. To achieve the effect of guaranteeing safety, ensuring absolute safety, improving safety and efficiency
CN112332987BActive Publication Date: 2021-03-23CHENGDU UNIV OF INFORMATION TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
CHENGDU UNIV OF INFORMATION TECH
Publication Date
2021-03-23

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Abstract

The invention discloses a user agent-based cloud quantum privacy query method. The method includes: using a database to negotiate with the user agent through classical channels to obtain a first shared key; using the database to encrypt the quantum state sequence generated according to the key to generate the first mixed key The sequence is transmitted to the cloud service provider; the cloud service provider performs quantum entrusted calculation on the first mixed sequence to generate the second mixed sequence and transmits it to the user agent; the user agent decrypts the second mixed sequence to generate the third mixed sequence and transmits it to the querying user A group; use the query user to decrypt the third mixed sequence to obtain the query quantum state, and perform quantum privacy query according to the obtained query quantum state. The present invention implements double encryption on the entire entrusted encryption process by means of cloud server entrusted encryption calculation, and improves the efficiency of the entire quantum transmission by utilizing the advantage of quantum Fourier transform to transmit multiple quantum keys at one time.
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Description

technical field

[0001] The invention relates to the technical field of quantum privacy query, in particular to a user agent-based cloud quantum privacy query method. Background technique

[0002] In today's society, cloud computing, machine learning, and artificial intelligence are all research hotspots in academia. The research center of quantum scholars has gradually evolved from quantum information science to quantum theory combined with cloud computing and machine learning. The popular research directions of quantum information and computing include: quantum computing, quantum search algorithm or quantum Fourier transform, etc. Quantum private data query is one of the important branches of quantum secure communication. The user queries the database for data that has been authorized, but the user hopes that the database cannot know his specific query content. Likewise, databases don't want users to get data entries that they don't have permission to query. However, th...

Claims

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