Attribute-based strategy hiding outsourcing signcryption method in Internet of Vehicles environment

Abstract

The invention discloses an attribute-based strategy hiding outsourcing signcryption method in an Internet of Vehicles environment. The method comprises the steps that each attribute authority determines a first key pair and a private key of each vehicle-mounted data receiver according to system public parameters; the central trusted authorization center generates a second key pair; the vehicle-mounted data owner outputs an access matrix of the linear secret sharing scheme; the vehicle-mounted data owner generates a ciphertext; the vehicle-mounted data receiver generates a third key pair; the semi-trusted cloud server generates a partially decrypted ciphertext according to the system public parameters, a public key in the third key pair, the ciphertext and an access matrix; and the vehicle-mounted data receiver judges whether the verification is passed or not according to the Boolean value. According to the invention, a plurality of attribute authority mechanisms are introduced into theInternet of Vehicles environment, so that the problems of overlarge system load, possible key escrow attack and the like caused by the fact that one central trusted authorization center is responsible for managing and publishing all users and keys thereof in the traditional single-authority Internet of Vehicles environment are solved.

Description

technical field [0001] The invention relates to the technical field of Internet of Vehicles signcryption, in particular to an attribute-based policy hiding outsourcing signcryption method in the Internet of Vehicles environment. Background technique [0002] The Internet of Things (IoT, Internet of things) is an extended and expanded network based on the Internet. It refers to the connection of different types of devices (things), mainly sensors, RFID tags, smart terminals, etc. to build a network. As an important part of the new generation of information technology, the deployment of these IoT devices is gaining more and more attention in academic research, industrial fields, and daily life, such as smart grid, e-health, smart city, etc. [0003] Currently, IoT-based applications are everywhere. According to existing data, according to the number of applications or fields involved in the Internet of Things, the Internet of Things can be divided into two categories: unit In...

AI Technical Summary

Problems solved by technology

Although these solutions have low storage and communication costs, they are still not suitable for resource-constrained devices, especially for highly dynamic ad hoc networks such as Internet of Vehicles

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