38results about How to "Guaranteed transmission security" patented technology

The invention discloses a multi-KMC key recovery method. The method is realized through two parts including key backup and key recovery, wherein the key backup comprises the following steps of making a third-party CA center issue a digital certificate to each participator, utilizing a user encryption terminal to generate random numbers, utilizes a threshold algorithm to carry out partitioning on a key according to the set KMC threshold number, signing the divided random numbers, utilizing a public key of each KMC to encrypt and uploading to the KMC to carry out key backup; the key recovery comprises the following steps of making a key request for the corresponding KMC according to the KMC threshold number and recovering the key from the user encryption terminal. The method has the following characteristics that 1) the generation intensity of the random numbers is guaranteed and the operation complexity is simplified; 2) even if the part of KMC is broken, the key cannot be leaked, and even if the part of KMC is destroyed, the recovery of the backup key can be also guaranteed; and 3) the security of the encryption key is guaranteed and the key transmission security is also guaranteed.

The invention relates to the field of information technologies and communication, and discloses a multi-database data access method and system and a proxy server. The multi-database data access method disclosed by the invention comprises the following steps that: access requests to various domain names are divided into a read operation type and a write operation type in advance; the proxy server, which is in the same position area with a client side initiating a domain name access request, detects the operation type of the domain name access request according to the domain name access request of the client side; if the operation type of the domain name access request is the read operation type, the proxy server responds to the domain name access request of the client side through read operation of a local database in the same position area; if the operation type of the domain name access request is the write operation type, the proxy server responds to the domain name access request of the client side through read and write operation of a master database; and data in the master database is regularly synchronized to a slave database in the position area, where various proxy servers are. Compared with the prior art, the read-only operation response speed of the databases is ensured; and furthermore, the database synchronization robustness is ensured.

The embodiment of the invention provides a monitoring video encryption transmission method and device, electronic equipment and a storage medium, and is applied to a monitoring access server in the articulated naturality web, and the method comprises the steps: responding to a monitoring check request transmitted by an articulated naturality web terminal in the articulated naturality web, callinga plurality of video data packets acquired by monitoring equipment corresponding to the monitoring check request from the Internet; generating encryption keys respectively corresponding to the plurality of video data packets according to the plurality of video data packets; encrypting the plurality of video data packets by adopting encryption keys respectively corresponding to the plurality of video data packets to obtain a plurality of encrypted video data packets; and respectively sending the plurality of encrypted video data packets and each encryption key to the articulated naturality webterminal through mutually independent data transmission channels, so that the articulated naturality web terminal respectively decrypts the plurality of encrypted video data packets by adopting the corresponding encryption keys. By adopting the technical scheme of the invention, the security of calling the monitoring video from the Internet can be improved.

The invention provides a data acquisition device for acquiring needed data from a heterogeneous system, which comprises an adaptor that comprises a conversion unit and an invoking unit. The conversion unit converts the identifier of the needed data received and transfers the identifier to the invoking unit to meet the data format request of the heterogeneous system, receives a retrieval result from a local server or a remote server, and converts the retrieval result and feeds the retrieval result to a client. The invoking unit is used to invoke the local server, and retrieves in a local database according to the converted identifier. If the local server does not retrieve the needed data, the remote server is invoked, retrieves in a remote data according to the converted identifier and transfers the retrieval result to the conversion unit. The invention further provides a data acquisition method that can improve the transfer efficiency of data and relieve the system pressure on the basis of guaranteeing the data transfer safety.

The invention relates to the technical field of Internet of Things transmission, in particular to an encryption transmission method for Internet of Things security based on a quantum random number, which comprises the following steps of: 1, a random number generated by a quantum true random number generator is taken as a cipher book, and the same identification code for the cipher book is stored at a hardware end and a server end; 2, after receiving the verification request, the server obtains two groups of cipher book subscript random number sequences from the quantum true random number generator; step 3, the hardware end replces the two groups of cipher book subscript random number sequences with an encryption key and a serial number query key according to the array subscript of the cipher book; 4, when the data is sent, the sending end encrypts the transmission data channel; the receiving end decrypts the received data; and 5, if the transmission sequence number does not correspondto the server, the transmission sequence number is re-acquired through the sequence number query key. According to the encryption transmission method for the Internet of Things security based on the quantum random number, the transmission security of the Internet of Things can be ensured, the performance requirement on an MCU is reduced, and the power consumption requirement is reduced.

The invention discloses a user-defined encrypted information transmission method and system. The method comprises the following steps: obtaining a first user login permission through a total login platform; judging whether the first user login permission meets a first predetermined requirement or not; if yes, obtaining first user authentication information according to the first user login permission; obtaining a preset authentication verification rule; when the first user authentication information meets a preset authentication verification rule, obtaining a first user setting permission; obtaining a first encryption algorithm according to the first user setting permission, wherein the first encryption algorithm meets a preset authentication verification rule; encrypting the first user setting permission and the first user authentication information through a first encryption algorithm to obtain first encrypted data information; and according to the first encrypted data information and the first user setting permission, obtaining a first execution instruction for sending the first encrypted data information to each subsystem. The technical problems that multiple systems are needed for business handling of financial enterprises, operation is complex, and safety problems exist if login passwords are unified are solved.

The invention discloses a method for acquiring a node trust value based on a detection route in an energy harvesting wireless sensor network to avoid black hole node attack. In the energy harvesting wireless sensor network, the energy of the nodes, in addition to meeting the data routing energy required for transmitting data packets among the nodes, remains. According to the method, the residual energy of the nodes can be fully utilized, and the detection route is established among the nodes in the network. Establishment of the detection route comprises sending a detection packet and receiving a feedback packet, and because a black hole node cannot correctly distinguish a data packet and the detection packet, malicious packet loss behaviors occur in the transmission process of the detection route, and position information of the detection route is exposed. According to the position information of the black hole node acquired by the detection route, the credibility of the malicious node is reduced, so that the node with higher credibility is selected to transmit the data packet in the transmission process of the next-hop data route. Through calculation of the node trust value, black hole nodes can be effectively avoided, and the data routing success rate of the network is improved. The residual energy of the nodes is fully utilized, and the energy utilization rate of the network is improved.

The embodiment of the invention discloses an encoding and decoding method for an optical code division multiplexing system. The method comprises the following steps that the codeword number M of encoding codewords is selected according to the coherence length of light carriers and the pulse width of the light carriers; the M codewords are selected as encoding codewords of a receiving end; a sending end carries out encoding on modulating signals sent to the receiving end by the encoding codewords according to preset code hopping rules, and an encoding signal is generated; the receiving end receives the encoding signal sent by the sending end; the receiving end carries out decoding on the encoding signal by the encoding codewords of the receiving end according to the preset code hopping rules. The technical scheme has the advantages that on the basis of guaranteeing the transmission security of the system, the complexity of the system is effectively reduced, and the transmission efficiency is improved.

The embodiment of the invention discloses a message transmission method and device, electronic equipment and a storage medium. The method is applied to a CAN node driver in communication connection with a gateway controller. The gateway controller is also in communication connection with at least one Ethernet node. The method comprises the steps of when a to-be-sent message is received, determining whether an identifier of the to-be-sent message belongs to a preset white list or not; and if the identifier of the to-be-sent message belongs to the preset white list, sending the to-be-sent message, otherwise, stopping sending the to-be-sent message. According to the technical scheme of the embodiment of the invention, the safety of message transmission is improved.

The invention discloses a method, a medium and a system for acquiring a secure multi-hop transmission path of a wireless sensor network. The acquisition method comprises the steps: acquiring a transmission path set from a starting wireless node in the wireless sensor network to a target wireless node through a transit wireless node, wherein the starting wireless node is a sensing node, the target wireless node is a gateway node, and the transit wireless node is at least one level of aggregation node; and determining an optimal transmission path from the transmission path set according to the uplink transmission bandwidth and the signal intensity value of the initial wireless node. According to the embodiment of the invention, under the condition that the power consumption of the sensing node is not increased, the transmission security and the information effectiveness are ensured, the reliability of a wireless network is improved, and the security of a multi-hop protocol is ensured.

The invention provides a wind power equipment reliability management information system which belongs to the technical field of wind power and computer communication. The system comprises a data integration platform 102 and a reliability management platform 101. The data integration platform is used for unifiedly collecting the wind turbine monitoring data of a number of wind turbine monitoring systems which monitor wind turbine units in a wind power plant. The reliability management platform is connected with the data integration platform, and is used for collating and analyzing the wind turbine monitoring data collected by the data integration platform to acquire the equipment reliability information of each wind turbine unit in the wind power plant. According to the invention, the system can automatically collect the information of the wind power plant, automatically judges and classifies events according to the collected data, and automatically analyzes and records responsible persons and causes of key events, so as to improve the management efficiency and accuracy of the wind power equipment reliability.

The invention provides a vehicle and mobile terminal binding method and system, and the method comprises the steps: a vehicle is provided, which is in near field communication with a mobile terminal; the vehicle sets a session key based on a predetermined cryptographic algorithm; the vehicle determines a first authentication password, encrypts the first authentication password by using the session key, and sends the encrypted first authentication password to the mobile terminal; or, the vehicle receives an encrypted first authentication password sent by the mobile terminal, and decrypts the encrypted first authentication password by using the session key to obtain the first authentication password; and the vehicle performs mutual trust authentication with the mobile terminal based on the first authentication password, and performs binding operation after the authentication is passed. The vehicle and mobile terminal binding method and system provided by the invention are wide in application range and high in safety.

The invention discloses a lightweight access control method and system for the industrial internet of things without a certificate. According to the idea of ​​OAuth, the local central server responsible for authorization authenticates both parties. Unlike ACE‑OAuth, which requires traditional (such as certificate-based) communication key negotiation before authentication, this method uses the local server as a trusted first Three parties, use public key-based challenge responses, tokens and passwords to realize two-way authentication between users and resource servers, and integrate communication key negotiation into the authentication process, while ensuring security, resource servers do not need to distribute and receive certificates and verification, which can effectively reduce the number of interactive rounds in the authentication process, thereby effectively reducing the amount of communication data transmission and key negotiation calculation consumption, including CPU occupation, disk occupation, memory occupation, etc., which is more advantageous in terms of security and practicability , more suitable for resource-constrained environments such as the Industrial Internet of Things.

The invention discloses a data access method and equipment adopting the same. In the data access method disclosed by the invention, metadata information is encryption information; when accessing a storage server according to the metadata information, a client side needs to acquire a metadata key according to user identification, and obtain the metadata information by decrypting the encryption information according to the key, therefore, an unauthorized client side can not obtain the metadata key according to the user identification, further the metadata information can not be decrypted, and then the phenomenon that an unauthorized client side accesses a metadata server to acquire metadata information and then accesses the storage server through the metadata information can be avoided.