Certificateless signcryption algorithm suitable for VANETs

Abstract

The invention provides a certificateless signcryption method suitable for VANETs, and the method comprises the following steps: S1, obtaining vehicle-mounted network system parameters from a vehicle-mounted network system by employing a system building algorithm, and building a vehicle user IDi; adopting a false identity generation algorithm and a partial private key generation algorithm to generate a vehicle user false identity, the validity period of the false identity and a partial private key; generating a vehicle user secret value by adopting a vehicle user secret key generation algorithm; a vehicle user sender generating a user message, generating a signcryption ciphertext based on the partial private key, the user public key and the secret value, and sending the signcryption ciphertext to a vehicle user receiver; and decrypting the signcryption ciphertext through a verification equation to obtain a decrypted user message, and finally judging whether the decryption is valid or not. The method is an efficient and safe certificateless signcryption algorithm, confidentiality, authentication, integrity, non-repudiation and privacy protection can be provided for information transmitted between vehicle communication units, and safety guarantee is provided for vehicle-mounted self-organizing network safety communication.

Description

technical field [0001] The invention belongs to the subject scope of network space security, and relates to an efficient and safe certificateless sign-encryption algorithm suitable for VANETs. Background technique [0002] Vehicle Ad Hoc Networks (VANETs) can effectively solve traffic safety, management and congestion problems, and it is the basis of future intelligent transportation. However, security and privacy issues have seriously affected the further development of VANETs. VANETs work in a wireless communication mode, which is open and fragile, and is vulnerable to attacks and damages. The communication data in VANETs is easily monitored and monitored by the enemy. counterfeit. If the vehicle user's private information (such as driver's identity, license plate number, etc.) is obtained by a malicious third party, it is very likely to endanger the life and property safety of the vehicle user. Therefore, the deployment and implementation of VANETs must meet security re...

AI Technical Summary

Problems solved by technology

However, security and privacy issues have seriously affected the further development of VANETs. VANETs work in a wireless communication mode, which is open and vulnerable, and is vulnerable to attack and destruction. The communication data in VANETs is easily monitored and monitored by the enemy. fake

If the private information of the vehicle user (such as driver's identity, license plate number, etc.) is obtained by a malicious third party, it is very likely to endanger the life and property safety of the vehicle user.

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