16 results about "Pairwise key" patented technology

The invention discloses an electro-tricycle Bluetooth binding method and system, belongs to the technical field of electro-tricycle intelligent control, effectively improves the accuracy of data association of a production end, establishes'Bluetooth MAC address-equipment SN code-frame number 'three-dimensional mapping data through double verification of the production end, and improves the accuracy of data association of the production end. By combining station-level secondary verification and a production line sound-light alarm mechanism, data mismatching caused by manual wrong scanning and cross-station operation, AES-256 encrypted storage and cloud multi-access control are completely eradicated, data transmission and storage safety is guaranteed, the problems of single-dimension association and data leakage and tampering are solved, the safety of the whole process of a binding link is enhanced, and the safety of the whole process of the binding link is improved. The cloud triple verification resists illegal requests, the dynamic secret key is embedded into a frame number fragment and a timestamp, and the alarm triple verification and a failure dormancy mechanism are matched, so that hidden dangers such as secret key counterfeiting and multiplexing, communication defense line building through BLE connection and SN code secondary verification, open type pairing cracking and weak secret key security are avoided.

A method of enabling dual-mode Bluetooth pairing between a first electronic device and a second electronic device is executed by the first electronic device and comprises: receiving, from the second electronic device: an enablement request to enable dual-mode Bluetooth pairing between the first electronic device and the second electronic device, wherein dual-mode Bluetooth pairing comprises generating a first pairing key and applying a key derivation function to an input comprising the first pairing key to generate a second pairing key; and verification data; determining, by the first electronic device, whether the verification data meets a predetermined verification criterion; and in response to a determination that the verification data meets the predetermined verification criterion, enabling dual-mode Bluetooth pairing between the first electronic device and the second electronic device.

The present disclosure provides methods systems and apparatuses for use in the secure agreement of group keys in which the group key(s) are shared between multiple end-point devices, said multiple-endpoint devices being used to create the group key(s) that is / are distributed in such a manner that no other untrusted part of the system has access to sufficient information to be able to derive or determine the group key(s) and / or portions of said group key(s). This is achieved by pairs of endpoint devices agreeing pairwise keys between themselves, wherein an intermediary device that distributes encryption keys to the endpoint devices over quantum communication channels does not have sufficient information to be able to derive the identity of the pairwise keys.

The invention relates to a bus communication system with a master-slave communication structure, which comprises master equipment and slave equipment, the slave device comprises a light emitting unit, a bus information receiving unit and a decryption unit; the master device comprises an encryption unit and a bus information sending unit; wherein a light emitting unit of the slave device sends a pairing key in the form of an optical data signal, the master device determines the pairing key according to the optical data signal, an encryption unit of the master device encrypts information to be transmitted by using the pairing key, and a bus information sending unit sends the encrypted information to the slave device through a bus, and receiving the encrypted information through the bus from a bus information receiving unit of the device, and decrypting the encrypted information by a decryption unit using the pairing key. In addition, the invention also relates to a bus communication method with a master-slave communication structure and communication equipment of slave equipment.

Systems and techniques are described for key establishment. For instance, a process can, during a first cryptographic key derivation, store a first trusted measurement value of a first entity in a first storage location, store an expected measurement value of a second entity in a second storage location, and generate a first instance of a cryptographic key using the first trusted measurement value, the expected measurement value, and a key derivation function (KDF). The process can, during a second cryptographic key derivation, obtain the expected measurement value as a second trusted measurement value of the second entity and store it in the second storage location, obtain the first trusted measurement value as a second expected measurement value and store it in the first storage location, and generate a second instance of the cryptographic key using the second expected measurement value, the second trusted measurement value, and the key derivation function.

A pairing method between a user device (1) and an operator device (2), the user device (1) being intended to receive conditional access data from the operator device (2), the user device having a user device identifier (UID), the operator having an operator device identifier (OID). The method comprises receiving, by the user device, a user device key (KUID) derived from a first cryptographically secure function and receiving, by the operator device, an operator key (KOID) derived from a second cryptographically secure function. The user device comprises a user device bilinear mathematical function (e(KUID, OID)) and the operator device comprises an operator bilinear mathematical function (e(UID, KOID)) which each define a pairing over an elliptic curve. The method includes generating, by the operator device (2), a pairing key (KD=e(UID, KOID)) between the user device (1) and the operator device (2), using the operator key (KOID) and the device identifier (UID) as variables of the operator mathematical function (e(UID, KOID)). The user device (1) generates the same pairing key (KD=e(KUID, OID)) using the user device key (KUID) and the operator device identifier (UID) as variables of the user device mathematical function e(KUID, OID).

Methods, systems, apparatuses, and computer program products for providing random numbers over an insecure channel using disguised cyphertexts are disclosed. A secure access portal application receives a first cyphertext from a key deliver center (KDC), decrypts the first cyphertext using paired keys shared between the first SAP application and the KDC to obtain a transformed second cyphertext, de-transforms the transformed second cyphertext using a transformation function based on the paired keys to obtain a second cyphertext, decrypts the second cyphertext using the paired keys to obtain first a random number generated by the KDC, and generates a delivery key based at least on the first random number. The SAP application may be use the delivery key to securely receive a symmetric key from the KDC, and securely communicate with another secure access portal application using the symmetric key.

The application discloses a C-V2X-based vehicle-road cloud global quantum security communication system. Through the vehicle machine system OBU configured with a quantum security module, the roadside device RSU configured with a quantum security encryption card and the cloud platform built with global quantum security service, comprehensive global quantum security upgrade is realized for the cloud platform, the RSU and the OBU, and a hardware foundation is provided for realizing the construction of a highly secure, seamless and global quantum security communication environment. Through the first pairing key between the OBU and the first access base station, the second pairing key between the RSU and the second access base station, the third pairing key between the RSU and the adjacent RSU and the fifth pairing key between the OBU and the RSU. The multi-level key system enhances the confidentiality and integrity of communication, so that any ring communication can be effectively protected.

The application provides a collision attack post-processing method and system based on a genetic algorithm. A plurality of groups of random plaintexts are obtained first, and corresponding power traces are obtained by encryption through a cryptographic algorithm; correlation-enhanced collision attacks are performed on the random plaintexts and the power traces to obtain possibility rankings of pairwise key byte collision values; average values of energy traces of each group of power traces are calculated, and square sums of energy trace differences between key bytes are calculated; collision values between pairwise key bytes are confirmed according to a theoretical distribution of the square sums; the pairwise key byte collision values are rearranged, and the values marked as collisions are moved forward, and the values not marked as collisions are moved backward; initial populations are input into a genetic algorithm framework for evolution, and selection, crossover and mutation operations are implemented until an evolution generation reaches a threshold value or a correct collision chain is found, and the individual with the highest fitness is output as a result. The application significantly improves the efficiency and accuracy of the collision attack by optimizing the evaluation and selection strategy of key candidates.

A method and system for encrypted messaging includes first and second client devices and a quantum key device having a quantum random number generator. The generator provides a first quantum random signal, and the key device provides a symmetric first master key from the first quantum random signal. The master key is transmitted to the first client device and stored. The key device uses the master key to generate an encrypted package by encrypting one of a plurality of keys. The key device generates a second encrypted package. The first pairing key is provided to the first client device by decrypting the first encrypted package using the first master key and providing the first pairing key in the second client device by decrypting the second encrypted package using the second master key to establish an encrypted connection between the first and second client devices.

The present invention relates to a secure communication method under the network architecture of edge servers and cloud servers. The terminal device transmits the generated data to the nearest edge server. When there is data that needs to be processed by other edge servers, the corresponding edge server is matched. The communication channel establishment module detects the NAT type of the target edge server, generates an interactive channel establishment policy, a pairing key, and a detection packet, and transmits them to the target edge server. A VPN program penetrates the NAT to establish an interactive channel. The communication channel establishment module establishes a VPN tunnel on the interactive channel established by penetrating the NAT, and at the same time sets a data forwarding policy. The nearest edge server initiates a communication request to the target edge server, the target edge server returns a response, and the nearest edge server sends the terminal data to be processed to the target edge server. The target server receives the terminal data to be processed and performs corresponding data processing. It realizes directly establishing a communication channel between edge servers for data interaction.

The application relates to the field of Bluetooth technology and discloses a pairing method and device of a vehicle-mounted Bluetooth module and a medium, which comprises the following steps: after a pairing key is randomly generated, the pairing key is encrypted to obtain an encrypted key, the encrypted key is added to a target data packet, the target data packet is a broadcast data packet or a BLE data packet, the target data packet is sent to a terminal, so that the terminal decrypts the encrypted key to obtain a to-be-paired key, and after a pairing request is initiated to the terminal, the terminal is authenticated based on the to-be-paired key returned by the terminal, so that a Bluetooth connection is established. Thus, the vehicle-mounted Bluetooth module randomly generates a pairing key each time the Bluetooth connection is established with the terminal, the pairing security is improved by encrypting the pairing key, in addition, the pairing key is added to the broadcast data packet or the BLE data packet and is transmitted to the terminal for decryption, a network device does not need to be additionally increased for key transmission, the pairing security is improved, and costs are saved.

This invention relates to the field of physical layer secure communication technology, and provides a method and apparatus for synchronously generating group keys and paired keys. The method includes: a central node acquiring the azimuth angles and corresponding channel complex gains of each edge node, designing the switching array parameters of a time modulation array based on the azimuth angles of each edge node, calculating the average radiation pattern coefficients of all edge nodes, and transmitting them collectively; the central node generating a group key and modulating it into a modulated signal using the time modulation array and transmitting it; the central node generating corresponding paired keys for each edge node and encrypting them to obtain paired key ciphertext, which is then sent to the corresponding edge node; each edge node receiving the modulated signal performs coherent demodulation to obtain demodulated symbols, performs hard decision on the demodulated symbols, and obtains the group key; each edge node decrypts the paired key ciphertext using the average radiation pattern coefficients and the demodulated symbols to obtain the paired key.

The present invention discloses a key management method and system, which relates to the technical field of key management and includes a key distribution scheme and a key revocation scheme. The wireless sensor network consists of at most M base stations and N sensors, where the number of base stations is much less than the number of sensors. Each sensor node is at least γ-hop reachable from m base stations, and γ < m. Each base station or sensor node in the network is assigned a globally unique digital identifier. The key distribution scheme includes the following: A1: Pairwise keys and individual keys; A2: Session keys; A3: Encryption keys and message authentication keys. For the key management method and system of the present invention, the base stations and sensor nodes can verify each other's identity information; the capture or destruction of any base station does not affect the security of the entire sensor network.

The present invention discloses a pairing and authorization control method, device, air conditioner, client and storage medium. The method includes: generating a pairing key and displaying it, using a first communication module to publish a pairing broadcast message, so that any client can communicate and pair with the electrical device through the pairing key based on the pairing broadcast message, and establish a communication pairing link; generating a control key, and sending it to any client through the communication pairing link, and then disconnecting the communication pairing link, so that any client can publish a control broadcast message based on the control key; using the first communication module to receive the control broadcast message, decrypt it according to the control key, obtain a control command and execute it. This solution, by using a communication module (such as a Bluetooth BLE module) to broadcast, enables any client to pair and authorize control of the electrical device, so as to meet the demand of using multiple clients to control one electrical device.

A method of enabling dual-mode Bluetooth pairing between a first electronic device and a second electronic device is executed by the first electronic device and comprises: receiving, from the second electronic device: an enablement request to enable dual-mode Bluetooth pairing between the first electronic device and the second electronic device, wherein dual-mode Bluetooth pairing comprises generating a first pairing key and applying a key derivation function to an input comprising the first pairing key to generate a second pairing key; and verification data; determining, by the first electronic device, whether the verification data meets a predetermined verification criterion; and in response to a determination that the verification data meets the predetermined verification criterion, enabling dual-mode Bluetooth pairing between the first electronic device and the second electronic device.