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Lightweight anonymous access authentication method for vehicle fog data based on blockchain
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An access authentication, lightweight technology, applied in the field of network communication security of urban traffic operation management, which can solve the problems of irresistible database tampering, increasing data residue and communication delay, etc.
Inactive Publication Date: 2020-09-29
BEIJING JIAOTONG UNIV
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[0006] The purpose of the present invention is to provide a lightweight anonymous access authentication of vehicle fog data based on blockchain, which realizes cross-domain autonomous authentication and anonymous authentication of OBU, effectively reduces communication delay and avoids the risk of a single database being tampered with method to solve the technical problems of increasing data residue and communication delay and being unable to resist database tampering in the above-mentioned background technology
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Embodiment 1
[0082] like figure 1 As shown, Embodiment 1 of the present invention provides a blockchain-assisted lightweight anonymous access authentication method for vehicle fog data. A witness node WP is set within the jurisdiction of each service manager SM. The authentication method includes the following Process steps:
[0083] Step S110: trust center AD initializes system parameters;
[0084] Step S120: register service manager SM and vehicle terminal OBU;
[0085] Step S130: the SM authenticates the legitimacy of the OBU, stores the authentication information, and broadcasts the authentication result to the witness node WP, and the roadside facility unit RSU provides fog services for the OBU according to the authentication result;
[0086] Step S140: WP writes the authentication result into the public ledger to complete the OBU consensus.
[0087] like figure 2 As shown, in the first specific embodiment of the present invention, the step S110 specifically includes:
[0088] S...
Embodiment 2
[0143] like Figure 5 As shown, the second embodiment of the present invention provides a method for lightweight anonymous access authentication of vehicle fog data based on block chain assistance. ), the AD is a fully credible body responsible for the registration of the on-board terminal OBU and the service manager SM, as well as the tracking of offending vehicles, it does not often participate in this mechanism.
[0144]Service Manager SM (Service Manager) is the administrator of the vehicle fog service in a large area, the number of SM is fixed, and before the system is established, they need to be registered at AD. SM is mainly responsible for managing all RSUs that provide fog services in its area, and authenticating OBUs that request fog services in the area. In addition to this, SM is also responsible for maintaining a public ledger containing all vehicle access records, which only SM, witness nodes WP and AD can view.
[0145] Witness node WP (Witness Peer is respon...
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Abstract
The present invention provides a vehicle fog data light-weight anonymous access authentication method based on blockchain assistance, and relates to the technical field of network communication safetyof urban traffic operation management. The method comprises the steps of: arranging one witness node (WP) in a management range of each service manager (SM), initializing system parameters through antrusted center AD, and registering the SM and a OBU (On Board Unit); allowing the SM to authenticate the validity of the OBU, storing the authentication information, broadcasting an authentication result to the WP, and providing fog service to the OBU according to the authentication result by a roadside facility unit RSU; and writing the authentication result into a public account by the WP to complete OBU consensus. The vehicle fog data light-weight anonymous access authentication method based on blockchain assistance can protect the user privacy information while ensuring the identity authenticity of a vehicle user accessing the fog service so as to achieve the vehicle anonymous authentication and allow users to select the time and the frequency of replacement of the pseudonym by themselves; the non-interactive autonomous cross-domain authentication is achieved, and the communication delay is effectively reduced; and moreover, the authentication information management is simplified,and the risk that a single database is tampered is effectively avoided.
Description
technical field [0001] The invention relates to the technical field of network communication security for urban traffic operation management, in particular to a lightweight anonymous access authentication method for vehicle-mounted fog data based on blockchain. Background technique [0002] Vehicle Ad Hoc Network (VANET) is a subset of Mobile Ad Hoc Network (MANET), which consists of moving vehicles and Road Side Units (RSU). Every vehicle is equipped with an on-board unit (OBU) and a set of sensors. VANETs provide vehicle-to-vehicle (V2V) and vehicle-to-infrastructure (V2I) communications, and they are now largely dependent on cloud computing services that provide communications, computation, and storage. With the massive increase in the number of connected vehicles and the increasing mobility of vehicles, there is an increasing demand for applications that support low-latency, uninterrupted services. Providing the required quality of service (QoS) is the vehicle cloud com...
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