Homomorphic privacy set intersection method based on order-preserving function

The invention belongs to the technical field of privacy computing, and relates to a homomorphic privacy set intersection method based on an order-preserving function. The homomorphic privacy set intersection method is characterized in that: sensitive data is processed by adopting an order-preserving...

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Hauptverfasser: TENG HAIMING, ZHAO GANG, ZHANG SEN, CHENG XIJI, LUO XIAO
Format: Patent
Sprache:chi ; eng
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Zusammenfassung:The invention belongs to the technical field of privacy computing, and relates to a homomorphic privacy set intersection method based on an order-preserving function. The homomorphic privacy set intersection method is characterized in that: sensitive data is processed by adopting an order-preserving function before the sensitive data is subjected to disk storage, and then the data is stored in a hard disk, so that the sensitive data is subjected to encryption protection when the sensitive data is subjected to disk storage, and the size characteristics of the data is reserved. During privacy set intersection, after data of a client side are processed through an order-preserving function, homomorphic encryption is carried out on the data of the client side, after homomorphic encryption is completed, intersection operation of the privacy sets is carried out on the server side through the characteristics of the homomorphic calculation technology under the condition that the data of the client side and the data of