Data query method and device, equipment and storage medium

The invention discloses a data query method and device, equipment and a storage medium, relates to the technical field of data processing, is used for improving the security of data query by a user, and comprises the following steps: determining screening information based on to-be-queried information, and sending the screening information and a preset public key to agency electronic equipment; receiving random information sent by the agent electronic equipment, and determining a target private key corresponding to the to-be-queried information based on the random information and a preset private key; determining the position of the to-be-queried information in the multi-dimensional ciphertext vector based on a plurality of hash functions in the target Bloom filter, and determining at least one ciphertext based on the position of the to-be-queried information in the multi-dimensional ciphertext vector, a preset casual transmission protocol and a target processing result; and decrypting the at least one cipher