Encrypted data retrieval and sharing method and system, medium, equipment and application

Abstract

The invention belongs to the technical field of information data processing, and discloses an encrypted data retrieval and sharing method and system, a medium, equipment and an application. The method comprises the steps: performing system initialization; generating an encryption matrix index; generating a keyword trap door by using the paillier key pair; carrying out ciphertext search by using two ciphertext comparison algorithms in a search stage; after the intelligent vehicle obtains the query result, transmitting the attribute set of the intelligent vehicle to the authoritative platform; enabling the authoritative platform to decrypt the related key ciphertext based on the attribute set; and updating keywords or data. When retrieval or sharing is carried out, data is encrypted, college retrieval can be realized, fuzzy retrieval can be carried out on keywords with spelling errors, results are sorted according to relevancy, and accurate retrieval is realized; safe retrieval and sharing of data are achieved, and fuzzy retrieval can be conducted on keywords with spelling errors; the system can achieve efficient and encrypted retrieval, and how to achieve efficient encryption sharing.

Description

technical field [0001] The invention belongs to the technical field of information data processing, and in particular relates to an encrypted data retrieval and sharing method, system, medium, equipment and application. Background technique [0002] Present: As the IoV market continues to expand, more and more vehicles and related facilities are being integrated into it. It not only has an impact on the network capacity, but also makes the network topology more complex. For these reasons, data sharing and transmission in densely networked areas may be lost or congested, reducing network reliability and increasing transmission delays. [0003] The disadvantage of existing IoV technology is mainly that the existing architecture is ground-based, providing network access services for vehicles and in-vehicle applications. In response to this main problem, the emergence of SAGIVN provides a new idea for the promotion of IoV. SAGIVN is to add low-earth orbit satellites (LEOS), u...

AI Technical Summary

Problems solved by technology

Aiming at the problem of safe storage and sharing of data generated by vehicles in the Internet of Vehicles, no effective solution has been proposed so far

At the same time, due to the high-speed mobility of the vehicle itself, this also puts forward higher requirements for the topology of the proposed system. How to meet the low-latency communication standard during vehicle movement is relatively difficult under the premise of ensuring safety.

[0006] The significance of solving the above problems and defects is: as an important part of the Internet of Things, the Internet of Vehicles has greatly contributed to the development of global intelligent transportation. However, in recent years, some problems in the Internet of Vehicles have hindered the improvement of intelligent transportation. First, the Internet of Vehicles The coverage of the Internet of Vehicles can no longer meet the current traffic needs, and many remote areas or areas with imperfect network infrastructure cannot join the Internet of Vehicles. In addition, the privacy protection of vehicles in the Internet of Vehicles is still at the stage of location and other data. For the vehicle itself Secure storage and sharing of data does not present an effective solution

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