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9 results about "Secure multicast" patented technology
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IP Multicast is an internet communication method where a single data packet can be transmitted from a sender and replicated to a set of receivers. The replication techniques are somewhat dependent upon the media used to transmit the data. Transmission of multicast on an inherent broadcast media such as Ethernet or a satellite link automatically allows the data packet to be received by all the receivers directly attached to the media. In contrast, transmission of multicast on media that is point-to-point or point-to-multipoint requires the packet to be replicated for each link. The replication process should occur in an optimal manner where a distribution tree is built within the network. The packet can be replicated at each of the branches in the tree. This mitigates the requirement for the sender to replicate the packet once for each recipient. The use of IPsec as a communication link requires a point-to-point connection establishment. Usually, the security is required from sender to receiver which implies the sender must replicate the packet on each of the secure connections - one for each receiver.
Method and apparatus for implementing secure multicast in blockchain network
ActiveUS12438857B2Key distribution for secure communicationSpecial service provision for substationComputer networkInternet privacy
A method and an apparatus for implementing secure multicast in a blockchain network. The method includes: a first blockchain node generates and sends a security group creation message including a security group information structure corresponding to each target blockchain node to be added to a multicast security group, each security group information structure including a public key of a corresponding target blockchain node and ciphertext security group information obtained by encrypting plaintext security group information by using the public key, the plaintext security group information including a security group session key; and a second blockchain node searches, after receiving the security group creation message, the security group creation message for a security group information structure that includes a public key of the second blockchain node, and decrypts ciphertext security group information in the identified security group information structure to obtain the security group session key.
Owner:ALIPAY (HANGZHOU) INFORMATION TECH CO LTD +1
A method for securing multicast communications
The application discloses a multicast communication security guarantee method, comprising the following steps: a multicast sender periodically sends multicast messages; after a receiver receives the multicast messages, if there is no security check requirement for the received information, the receiver directly uses a security code to check the message integrity, directly uses the message after checking the message disorder, deletion and repetition according to a time stamp and a serial number; and if there is a security check requirement for the received information, the receiver performs security check, including verifying a security signature by using a pre-configured encryption algorithm and key, checking the message integrity, disorder, deletion and repetition, and performing delay check. The application can save communication bandwidth, reduce the number of links and simplify link management based on multicast mechanism transmission of security information.
Owner:浙江众合科技股份有限公司
A global quantum secure multicast information transmission method
ActiveCN119675918BKey distribution for secure communicationSpecial service provision for substationApplication serverInformation transmission
The application discloses a kind of global quantum secure multicast information transmission methods, the method comprises: based on multicast service creates multicast group;Each edge gateway device and center gateway device downloads key file from key center;Center gateway device is associated with global quantum service link and is stored in mapping table with the IP of participant;Sender user sends the information of message receiver user to application server via edge gateway device and center gateway device with the message to be sent, own IP and message receiver user information;Application server sends the data processed to each receiver user in multicast group again.This application can only participate in communication in the user of multicast group, and the communication data is encrypted and decrypted by using the related key, so that the communication message is prevented from being stolen by irrelevant personnel;Meanwhile, the key is pre-installed or pre-installed online, and then the service is distributed, and the key relay service is ensured, so that the high-load traffic service can normally operate in the global quantum security network.
Owner:MATRICTIME DIGITAL TECH CO LTD
Secure multicast to unicast content conversion
The present disclosure provides a method for unicast transmission of encrypted multicast content. An adapter receives the encrypted multicast content along with multicast content-related information (e.g., usage rules) and securely receives protection information from an entity associated with a DRM server. The adapter generates a content key token containing at least one content encryption key (CEK) and the with multicast content-related information (e.g., usage rules), using the protection information to protect confidentiality and authenticity of at least part of the token. The adapter transmits the content key token to a device, enabling the device to request a DRM license including the CEK from the DRM server. The adapter then transmits the content encrypted with the CEK to the device in unicast mode. The method enables secure conversion of multicast content to unicast while maintaining end-to-end security between content access systems and DRM systems.
Owner:NAGRAVISION SRL
A method for supplementing keys in a unicast source global quantum secure multicast network
ActiveCN119652511BKey distribution for secure communicationSpecial service provision for substationMulticast networkEngineering
The present application discloses a method for key supplementation in a unicast source global quantum-secure multicast network. By initiating a key supplement request through a quantum-secure multicast source, not only can key supplementation in a unicast source global quantum-secure multicast network be reliably and securely implemented, but it can also effectively avoid the situation where each multicast member in a quantum-secure multicast group has to make a key supplement request, which would cause network congestion and consume network resources if the multicast key center needs to process multiple redundant key supplement requests simultaneously. This reduces the processing burden on the multicast key center. After generating and distributing a supplementary multicast group key, the multicast key center can encrypt and multicast the supplementary multicast group key to all multicast members in the quantum-secure multicast group using an encryption key corresponding to the supplementary multicast group key. This not only ensures the security of the supplementary multicast group key, but also improves the real-time and continuity of key supplementation, and reduces the delay in synchronizing the supplementary multicast group key between the multicast members.
Owner:MATRICTIME DIGITAL TECH CO LTD
Method for interaction between IoT nodes in a local network and local IoT node network
PendingUS20250247228A1Multiple keys/algorithms usagePublic key for secure communicationComputer networkEngineering
A method for interaction between IoT nodes in a local network is provided. The local network comprises a plurality of IoT nodes. Each IoT node comprises at least one sensor or actuator and a first interface for communication with other nodes. The method comprises: creating a group of IoT nodes from the IoT nodes which together run an application, where at least one of the IoT nodes has a processing unit suitable for executing at least part of an application logic of the application; and determining a group-head IoT node from the IoT nodes, where the group-head node is configured to provide necessary information for secure multicast communication of the IoT nodes with one another. The multicast communication takes place via UDP / IP. The method includes executing the application logic for implementing at least part of the application by way of the processing units of the IoT nodes.
Owner:PERINET GMBH
System and method for performing multicast authentication in network-on-chip systems
PendingUS20250317300A1Key distribution for secure communicationUser identity/authority verificationNetworked systemEngineering
A method and system are directed to securing multicast communications, the method comprises receiving a message payload, initializing a multicast message authentication code (MAC) tag, generating a first-format tag based on a hash of a pre-shared symmetric key and the message payload, generating a second-format tag based on a bit extension of the first-format tag, generating a transformed tag based on a bit length transformation of the second-format tag, accumulating the transformed tag to the multicast MAC tag, and generating a multicast authenticated packet based on the multicast MAC tag.
Owner:UNIV OF FLORIDA RESEARCH FOUNDATION INC
Methods for the interaction of IoT nodes in a local network and local IoT node network
PendingDE102024102789A1Multiple keys/algorithms usagePublic key for secure communicationEngineeringProcessing element
A method is provided for the interaction of Internet-of-Things IoT nodes (110) in a local network (100), wherein the local network (100) represents an Ethernet network or a single pair Ethernet network and has a plurality of IoT nodes (110), and wherein each IoT node (110) has at least one sensor and / or one actuator (111) and a first interface (112) for communication with other IoT nodes (110) in the local network (120).The method comprises the steps of: creating a group (110a) of IoT nodes (110) from the plurality of IoT nodes (110), which together execute an application, wherein at least one of the IoT nodes (110) of the group (110a) each has a processing unit that is suitable for executing at least part of an application logic of the application; determining a group head IoT node (110b) from the IoT nodes (110) of the group (110a), wherein the group head IoT node (110b) is designed to ensure the necessary information for secure multicast communication between the IoT nodes (110) in the group (110a), wherein the multicast communication takes place via a User Datagram Protocol Internet Protocol UDP / IP, and executing the application logic for implementing at least part of the application via the processing units of the IoT nodes (110).
Owner:PERINET GMBH
Method and device for security MBS communication in wireless communication system
ActiveUS12615690B2Special service provision for substationConnection managementSecure communicationCommunications system
Provided are a method and apparatus for security multicast and broadcast service (MBS) communication in a wireless communication system. An operating method of a terminal in a wireless communication system includes receiving configuration information to be applied to MBS data from a base station, and receiving the MBS data based on the configuration information, wherein the configuration information is for configuring an initial value of a state variable corresponding to the MBS data.
Owner:SAMSUNG ELECTRONICS CO LTD