Privacy protection methods and privacy protection apparatuses in vehicle communication

Abstract

The present invention provides a privacy protection method and a privacy protection apparatus in vehicle communication. The privacy protection method comprises the steps of acquiring a first secret key allocated by an operator, wherein after the operator allocates the first secret key, multiple pairs of (PMSI, KPMSI) are encrypted by using the first secret key and then are sent to an authentication management center; sending a request of signing a public key of a vehicle terminal to the operator, and receiving a signature result returned from the operator, wherein the operator uses a private key of the operator to sign the public key of the vehicle terminal; sending an identifier of the vehicle terminal, the public key of the vehicle terminal and a signature result to the authentication management center, and receiving at least one pair of (PMSI, KPMSI) that is encrypted by using the public key of the vehicle terminal and the first secret key and is sent by the authentication management center; and decrypting the received (PMSI, KPMSI) according to the first secret key and the private key of the vehicle terminal, and performing vehicle communication according to the decrypted (PMSI, KPMSI). Through adoption of the method and apparatus, the privacy security in vehicle communication is greatly improved.

Description

technical field [0001] The present invention relates to the technical field of vehicle communication, in particular, to a privacy protection method in vehicle communication and a privacy protection device in vehicle communication. Background technique [0002] At present, LTE (Long Term Evolution, long-term evolution) has brought the Internet of Vehicles communication into the scope of standardization. In the relevant specifications, the communication between the vehicle and the outside world (to other vehicles, to pedestrians, to roadside facilities, etc.) is referred to as V2X (Vehicle to X, vehicle to outside world) communication. [0003] In the relevant discussion draft of 3GPP, the following two contradictory security and privacy clauses are formulated in the V2X specification: [0004] (1) In order to protect the privacy of the vehicle, the operator should not be able to distinguish the vehicles participating in the communication; [0005] (2) To protect network sec...

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Problems solved by technology

[0008] In addition, in figure 1 In the technical solution shown, one-to-one corresponding long-term keys need to be maintained between PCA and V-UE to ensure the security of the communication channel, and the key database storing these keys is maintained by PCA. With the develop

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