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Method for carrying out MAC (Media Access Control) address learning based on software and hardware coordination in VPLS (Virtual Private Lan Service)

The invention discloses a method for carrying out MAC (Media Access Control) address learning based on software and hardware coordination in VPLS (Virtual Private Lan Service). The method comprises the steps of receiving a message and analyzing the message to obtain a source MAC address and a virtual exchange instance to which the source MAC address belongs; if an address learning request access MAC address table exists, obtaining entry information in the MAC address table, and arbitrating pre-learning entry information and the entry information in the MAC address table; if MAC address authentication is started, updating an entry state to be pre-authentication and updating an aging period to be 1/2 of a preset aging period and arbitrating a link table length state; if the MAC address authentication is not started, updating the entry state to be authentication success and updating the aging period to be the preset aging period; and if the address learning request does not exist and a CPU request access MAC address table exists, when the entry state is valid and the entry information matches, performing corresponding operation on a pre-authentication entry state. According to the method, a great number of legal MAC addresses are prevented from being faked by an attacker to occupy normal MAC address table resources for a long time and the load of the CPU is prevented being too heavy, thereby maintaining the normal operation of a network and other business.
Owner:武汉二进制半导体有限公司

Internet of vehicles data sharing implementation method based on block chain and trusted execution environment

An Internet of Vehicles data sharing implementation method based on a block chain and a trusted execution environment comprises the following steps: constructing a block chain and TEE-based Internet of Vehicles basic management architecture and creating a privacy contract based on a block chain and TEE hybrid system, and calling the privacy contract through a client to perform data circulation, data submission and data request; the core of the vehicle networking basic management architecture based on the block chain and the TEE is a vehicle enterprise serving as a TEE NODE, vehicles in a management domain of each vehicle enterprise naturally become access clients in an organization, business operation is realized by calling a privacy contract, and a safe enclave is arranged in each TEE NODE; according to the method, the block chain and the TEE are combined, so that privacy protection of privacy contracts and sensitive data can be enhanced on the premise of ensuring basic functions of the block chain, and an under-chain storage system is constructed by means of a data sealing function of the TEE to solve the storage problem of mass data; the problems of privacy protection and trusted storage of vehicle data are solved around the security function design of trusted execution environment nodes.
Owner:SHANGHAI JIAO TONG UNIV
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