Abstract: A data processing method, an apparatus, a device and a medium are provided.

Abstract: A vector retrieval method and apparatus, a medium, an electronic device and a program product. The method includes: acquiring a target vector to be retrieved and a target key; performing linear transformation on the target vector by using the target random number; performing a rotation operation on the target vector obtained after the linear transformation by using the target orthogonal matrix to obtain a first ciphertext vector; and sending the first ciphertext vector to a first server, so that the first server retrieves at least one second ciphertext vector that is similar to the first ciphertext vector from a knowledge vector base, ciphertext vectors in the knowledge vector base are generated based on the target key and a reference vector, and a generation manner of the ciphertext vectors is the same as a generation manner of the first ciphertext vector.

Abstract: A data processing method and apparatus, an electronic device, a storage medium, and a product. Multiple shards of data of each datum in a data set are obtained; a first matrix is obtained according to the multiple shards of data; matrix operation is performed on the first matrix to obtain a second matrix; a shard data sorting result corresponding to the data set is obtained according to the first matrix and the second matrix; and the shard data sorting result is sent to a target party for determining a sorting result of data in the data set according to the shard data sorting result.

Abstract: The present disclosure relates to a method and apparatus for generating a data tuple for secure computation, a medium, and a device. The method is applied to a first participant, and the method includes: separately obtaining a first pseudo-random number pair and a second pseudo-random number pair by jointly executing the R-OT protocol with a second participant twice; and generating a first element slice of a data tuple for secure computation based on the two pseudo-random number pairs, where the data tuple includes the first element slice and a second element slice, and the second element slice is generated by the second participant.

Abstract: A data processing method, an apparatus, a device and a medium are provided.

Abstract: Embodiments of this application provide a packet transmission method and apparatus, and relate to the field of communication technologies. When the packet transmission method is applied, a first packet may be determined by using a first device, where packet fields of the first packet include an authentication identifier field, an authentication code field, and at least one candidate authentication field, and the authentication identifier field indicates a field that is in the at least one candidate authentication field and that corresponds to the authentication code field; and then the first packet is sent.