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46results about How to "Security update" patented technology

Searchable encryption method and system, storage medium, vehicle-mounted network and intelligent power grid

The invention belongs to the technical field of wireless communication network security. The invention discloses a searchable encryption method and system, a storage medium, a vehicle-mounted networkand an intelligent power grid, and the searchable encryption method comprises the steps: carrying out vectorization of a keyword through a dual coding function, constructing an S-HashMap safety indexthrough the characteristics of a position-sensitive Hash function, and guaranteeing a single node and a single keyword on the index; measuring the similarity between the keywords by using the Euclidean distance, and generating a primary query position before query; and meanwhile, introducing a fault-tolerant value to realize fuzzy matching, and summarizing and sorting search results of each querykeyword by adopting an integral system to obtain Top-k files with the highest matching degree. According to the searchable encryption method, efficient and safe retrieval and updating of the data in the cloud environment are achieved. Aiming at data management research in a cloud environment, a searchable encryption scheme supporting multi-keyword fuzzy retrieval is designed aiming at high efficiency and safety of data retrieval and updating, so that safe and efficient data query and updating are realized.
Owner:XIDIAN UNIV

Method and device for updating data of IFE (in-flight entertainment) systems of aircrafts

The invention provides a method and a device for updating data of IFE (in-flight entertainment) systems of aircrafts. The method includes processing update data to obtain compressed update packs in specified formats; transmitting the update packs to the IFE systems of the aircrafts via mobile communication networks; verifying encryption checking information and integrity checking information of the update packs which are transmitted to the IFE systems of the aircrafts, and updating the checked update packs into the IFE systems of the aircrafts according to specific data structures. The specified formats are update pack formats applicable to the IFE systems of the aircrafts, the update packs are provided with the encryption checking information and the integrity checking information, and the update data are described according to the specific data structures. The method and the device have the advantages that the specified update formats can be produced by update contents, the safety and the integrity of the update contents can be guaranteed in multiple modes, problems of time and labor wastage and the like when systems are manually updated can be solved, and accordingly the update packs can be safely updated to the IFE systems of the aircrafts.
Owner:NEUSOFT CORP

An identity authentication method in the quantum key application process

The invention discloses an identity authentication method during a quantum secret key application process. The identity authentication method includes the steps: a quantum network deployment phase, a preparation initial phase, a secret key preparation phase, an identity authentication phase and a secret key application phase. During an abstract extraction process, as the identity authentication method uses a quantum secret key and the quantum secret key is provided with true randomness, the difficulty for performing reverse operation on the abstract can be further reduced and the safety for information transmission can be improved; and at the same time, after accomplishment of one time of session identity authentication, only a device for identity authentication is allowed to apply for a secret key, so that the safety is further improved through verification of the device information, and during the process, a session ID is in continuous changing state and depends on a plurality of factors, so that a large amount of impersonation attack can be timely eliminated through verification of the session ID. For the identity authentication method during a quantum secret key application process, the secret key is applied to the quantum secret key application process to verify the legal identity between two parties for communication, so that verification of the legal identity of the opposite side between the two parties for communication can be realized and the required data for verification has absolute safety during the transmission process in the network.
Owner:ZHEJIANG SHENZHOU QUANTUM NETWORK TECH CO LTD
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