Data intersection method and device and electronic equipment

The invention provides a data intersection method and device and electronic equipment, and relates to the technical field of big data processing, and the method comprises the steps: obtaining a plurality of pieces of ciphertext data, guaranteeing the safety of original data provided by a data party, generating a first key value pair of each piece of ciphertext data, and aiming at the first key value pair with the same first attribute key, generating a second key value pair of each piece of ciphertext data; at least two pieces of ciphertext data with different first attribute values and the same first attribute key are used as intersection ciphertext data, data intersection is carried out based on the first key value of the ciphertext data, plaintext data corresponding to the ciphertext data cannot be obtained, the safety of original data in the intersection process is ensured, meanwhile, the intersection result is also the ciphertext data, and the data interaction efficiency is improved. Therefore, the inters