Batch privacy information acquisition method based on oblivious pseudo-random function and hash function

The invention provides a batch privacy information acquisition method based on an oblivious pseudo-random function and a hash function, and belongs to the technical field of privacy information acquisition. The method specifically comprises the following steps that S1, a query party randomly selects four hash functions h1, h2, h3 and H and shares the four hash functions to a data party; s2, a query party performs cuckoo hash on a keyword b corresponding to data needing to be queried according to the hash functions h1, h2 and h3; s3, executing the OPRF protocol by the query party and the data party; s4, the data party sends a keyword d corresponding to the encrypted data and a message m to the query party; and S5, the query party receives the keyword and the message corresponding to the encrypted data sent by the data party, and judges whether the message can be successfully decrypted or not. The technical problems that in the prior art, the calculated amount is large, and batch retrieval is not supported are