A conditional privacy protection method and system for Internet of Vehicles based on certificateless batch verification

Abstract

The invention discloses a conditional privacy protection method and system for Internet of Vehicles based on certificateless batch verification. The method includes: the key generation center KGC and the tracking authentication center TRA jointly execute to generate the master key and system parameters of the Internet of Vehicles, according to System parameters, real identity information of the vehicle user, TRA generates the pseudonym identity of the vehicle user, KGC generates part of the private key of the vehicle user, the vehicle user generates its own key, the vehicle user signs the message, RSU verifies the signature, and RSU verifies the signature Carry out batch verification; the non-certificate cryptosystem of the present invention effectively solves the inherent certificate management and certificate maintenance problems that cannot be eliminated in the traditional public key cryptosystem, and also avoids the key escrow brought by the identity-based cryptosystem Problem: Batch verification technology improves the efficiency of signature verification in the Internet of Vehicles; in the Internet of Vehicles, the key generation center KGC and the tracking authentication center TRA are used to realize the conditional privacy protection of the Internet of Vehicles.

Description

technical field [0001] The invention belongs to the technical field of certificate-less batch verification in information security, and in particular relates to a method and system for car networking conditional privacy protection based on certificate-less batch verification. Background technique [0002] In 2003, Al-Riyami He and Paterson publicly proposed the concept of Certificateless Public Key Cryptography (CLS-PKC) for the first time at the Asian Cryptography Conference, and gave the first certificateless signature scheme (Certificateless Signature Scheme, CLS). [0003] In certificateless public key cryptography, the user's private key is composed of two parts, one part is the partial private key (Partial PrivateKey) provided to the user through a secure channel by the trusted third-party key generation center KGC ; The other part is the secret value (Secret Value) chosen by the user himself. Since the key generation center only knows part of the private key informa...

AI Technical Summary

Problems solved by technology

[0007] Purpose of the invention: In order to solve the problem that the conditional privacy protection method of the Internet of Vehicles based on batch verification in the prior art cannot be safely and widely used in practice, the present invention provides a certificate-free batch verification based on the vehicle Privacy protection method and system for network conditions

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