Multi-party privacy set operation method and system suitable for intelligent ship

Abstract

The invention relates to a multi-party privacy set operation method and system suitable for an intelligent ship, and the method comprises the steps: automatically distributing a plurality of participant roles to form an intelligent ship star communication network architecture, cooperatively configuring an exchangeable weak pseudo-random function and a hash function, and unifying the sizes of all private sets; performing pseudo-random function interaction, generating an encryption rule by the client and sending the encryption rule to the center party, generating a permutation rule and a key by the center party, encrypting a private set of the center party, disorganizing the sequence and sending the encrypted private set to the client; the central party and the client verify the existence of elements through multilayer encryption and a Bloom filter, and generate and gather indication vectors; the vector summarizing node obtains an intersection or union result vector through bitwise operation, and the central party reversely adjusts the position and finally obtains a multi-party set intersection or union. According to the method, privacy set operation of multiple participants of the intelligent ship under the star network is realized, sensitive data of the ship is protected, and the method has high operation and communication efficiency and is suitable for a multi-ship privacy calculation scene.

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