Data sharing method and related equipment

Abstract

The embodiment of the invention discloses a data sharing method and related equipment, which can be specifically applied to an intelligent vehicle and an unmanned vehicle to realize remote safety diagnosis of the vehicle, and comprises the following steps: a server receives a file set sent by first equipment, wherein the file set comprises N ciphertext files, N index ciphertexts and N first key ciphertexts; the server receives a query trap door sent by a second device, finds a matched target index ciphertext from the N index ciphertexts according to the query trap door, and determines a corresponding target ciphertext file and a target first key ciphertext; and the server re-encrypts the target first key ciphertext by using the proxy re-encryption key to obtain a target first key re-encryption ciphertext, and sends the target ciphertext file and the target first key re-encryption ciphertext to the second equipment. The invention can be applied to multiple technical fields of intelligent driving, smart home, cloud storage file sharing and the like, and is used for realizing data security access in the corresponding fields.

Description

technical field [0001] The invention relates to the technical field of data sharing, in particular to a data sharing method and related equipment. Background technique [0002] With the rapid development of Internet technology, a large number of enterprises and individuals choose to store data on cloud servers. Cloud storage service can provide users with huge computing resources, storage space and flexible sharing mode. Its convenient, fast and on-demand network access method enables users to access resources anytime and anywhere, so that users can greatly save local resources. Storage resources and local data management and system maintenance overhead. However, due to the remote nature of cloud storage services, the security issues it brings have also attracted people's attention. It is usually difficult for users to control cloud service providers and even some unauthorized and illegal users to access stored data, and it is impossible to guarantee user privacy and data ...

AI Technical Summary

Problems solved by technology

However, there are still problems of low sharing efficiency and poor security in the process of ciphertext storage and sharing

For example, when the data owner stores multiple shared data on the cloud server, and the data user needs to obtain the desired target shared data from the above multiple shared data, he needs to search from a large number of encrypted shared data, resulting in The search complexity is high and the efficiency is low; and, because the shared data has been encrypted, the data user needs to obtain the corresponding decryption key from the data owner to decrypt it, which leads to the decryption key of the shared data being lost during transmission and There is a risk that data users may be leaked, and ultimately, the security of users' shared data is low

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