Data processing method, device and system and computer readable storage medium

Abstract

The embodiment of the invention provides a data processing method, device and system and a computer readable storage medium. The method comprises the steps that: a system parameter, a second matrix and a second encryption parameter are obtained, a matrix set composed of a k * k matrix composed of elements on a polynomial ring is determined, and a k-dimensional vector is composed of elements of which coefficients are valued according to binomial distribution in the polynomial ring; a secret vector and a noise vector are randomly selected from the k-dimensional vector, a first matrix is randomly selected from the matrix set, a first public key is generated according to the secret vector, the noise vector, the first matrix, the second matrix, the second encryption parameter, a target to-be-transmitted data identifier and the system parameter, and the secret vector is taken as a private key; the first public key is sent to a sending end, so that the sending end generates a second public key, and to-be-transmitted data is encrypted by using a lattice-based public key encryption algorithm and the public key; and the ciphertext corresponding to the target to-be-transmitted data identifier is decrypted by using an decryption algorithm and the private key, so that the security of accidental transmission of the data is improved.

Description

technical field [0001] The embodiments of the present application relate to the field of data processing, and in particular, to a data processing method, device, system, and computer-readable storage medium. Background technique [0002] As technology develops, data security during data processing becomes more and more important. Oblivious Transfer (OT) is a protocol for data transmission, which can protect the privacy of both parties during data transmission. It is a basic protocol in cryptography and is often used to build other cryptographic protocols and applications. [0003] Traditional oblivious transmission schemes are usually designed based on traditional cryptographic algorithms, which cannot resist quantum attacks and have low security. Contents of the invention [0004] Embodiments of the present application provide a data processing method, device, system, and computer-readable storage medium, so as to improve the security of inadvertent data transmission. ...

AI Technical Summary

Problems solved by technology

[0003] Traditional oblivious transmission schemes are usually designed based on traditional cryptographic algorithms, which cannot resist quantum attacks and have low security

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