Method and system for protecting condition privacy of internet of vehicles based on certificateless batch verification

Abstract

The invention discloses a method and a system for protecting a condition privacy of an internet of vehicles based on certificateless batch verification. The method comprises the following steps: a key generation center KGA and a track authentication center TRA jointly generate a master key and a system parameter of the internet of vehicles; according to the system parameter and vehicle user real identity information, the TRA generates a pseudonym identity of a vehicle user; the KGC generates a partial private key of the vehicle user; the vehicle user generates an own key; the vehicle user signs a message; an RSU carries out verification on a signature; and the RSU carries out the batch verification on the signature. According to the method and the system disclosed by the invention, by adopting a certificateless cryptography system, the unsolvable inherent certificate management problem and the certificate maintenance problem in the traditional public key cryptography system are effectively solved; and meanwhile, the key escrow problem caused by an identity-based cryptography system is also avoided; by adopting a batch verification technology, the signature verification efficiency in the internet of vehicles is improved; and in the internet of vehicles, the key generation center KGA and the track authentication center TRA are adopted to realize the condition privacy protection on 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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