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192
results.
Updated on
20/08/2026 [07:55:00]
Results 25 to 50 of 192
Absstract of: US2025106012A1
Systems and methods for quantum key distribution in an optical network and quantum-secured optical channels. A node for operation in an optical network includes one or more degrees each connected to a corresponding optical span including one or more fibers; and one or more Quantum-Optical Service modules (QOSM) for each of the one or more degrees, each QOSM supporting Quantum Key Distribution (QKD) for establishing a quantum-secured channel and Optical Service Channel (OSC) functionality over the quantum-secured channel. A line amplifier system for operation in an optical network includes one or more optical amplifiers configured to amplify optical channels over an optical span in the optical network; and a trusted quantum repeater, connected to the optical span, and configured to support QKD for establishing a first quantum-secured channel and a second quantum-secured channel and OSC functionality over the first quantum-secured channel and the second quantum-secured channel.
Absstract of: US2025112897A1
Techniques for applying a quantum ready intelligent security gateway are disclosed. In some embodiments, a system/process/computer program product for applying a quantum ready intelligent security gateway (e.g., a quantum ready intelligent security gateway that supports quantum key distribution (QKD) and/or post-quantum cryptography (PQC) for providing a secure tunnel to the mobile network) includes monitoring network traffic on a mobile network at a security gateway to identify a new session; determining meta information associated with the new session by extracting the meta information from the network traffic via one or more interfaces; and enforcing a security policy on the new session at the security gateway based on the meta information to apply context-based security in the mobile network.
Absstract of: EP4572187A1
0001 The present invention relates to a transmitter (1000) for a BB84 protocol, comprising a laser (1100) configured to generate a first light pulse (P<1>) having a first duration (T
Absstract of: US20260222206A1
A quantum token generation method using computing system comprising a quantum computer in communication with a classical computer is provided. The method comprising the steps of: generating, using the classical computer, a unique identifier comprising f portions; determining, using the classical computer, a secret-key quantum circuit comprising n qubits; generating, using the classical computer and the quantum computer, a classical description of the unique identifier using the secret-key quantum circuit; wherein the classical description comprises n portions; generating, using an n-qubit quantum circuit of the quantum computer, a quantum state based on the classical description of the unique identifier; and outputting, using the classical computer, a quantum token, the quantum token comprising: the unique identifier; and the quantum state.
Absstract of: US20260220242A1
A method for enhancing detection of fraudulent authentication data includes receiving, by an electronic device, data during an authentication transaction, computing a feature vector from the received data, and normalizing the feature vector. The method also includes encoding the normalized feature vector into qubits, expanding, using at least one quantum algorithm, the normalized feature vector into a high-dimensional space, and detecting in the high-dimensional space anomalies indicative of fraud based on the qubits. Furthermore, the method includes calculating, based on the detected anomalies, a confidence score reflecting a likelihood that the received data is genuine and comparing the confidence score against a threshold value. In response to determining the confidence score fails to satisfy the threshold value, the method determines that the received data requires secondary authentication.
Absstract of: US20260222815A1
0000 An Ultra-Wide Band (UWB)-based communication framework integrates quantum cloud orchestration and tokenized security to enable secure, efficient, and low-latency transactions between devices and edge centers. The system dynamically generates quantum-encrypted, perishable tokens containing transaction metadata, including geolocation, network type, and security requirements, to optimize data transfer. The framework employs UWB technology for precise location tracking and low-energy communication, enabling seamless hybrid network integration across UWB, 5G, and Wi-Fi. The quantum cloud orchestrator leverages AI and machine learning to predict network conditions, optimize transaction paths, and pre-communicate metadata for real-time processing. Using Software-Defined Networking (SDN), the system ensures secure and efficient routing while maintaining compliance with regulatory standards. Applications span diverse sectors, including smart workplaces, contactless retail, dynamic ticketing, personalized hospitality, and emergency response coordination. This invention addresses critical challenges in signal strength, energy consumption, and latency, offering a scalable, transformative solution for secure and efficient device-edge communication.
Absstract of: US20260222228A1
A method for optimizing the execution of the generation of a Crystals-Dilithium post-quantum digital signature σ=({tilde over (c)}, z, h) of a message M with a secret key sk=(ρ, K, tr, s1, s2, t0) where ρ, K, tr are 256 bits binary values, s1 and s2 are vectors of length l, respectively k, of elements of the ring Rq whose coefficients are lower than a first predetermined value η, and t0 is a polynomial vector of length k with k, l, n and q integers. Other aspects are described herein.
Absstract of: US20260222185A1
0000 A method and an apparatus for receiving quantum optical communication while reducing receiver, increasing maximum detection speed, or both. The disclosure comprises transforming the polarization encoded output of a QKD system to time-bin encoded output at the detector level. The disclosure also comprises a method and an apparatus using a quantum optical switch and several SPD units to increase communication speed.
Absstract of: US20260222187A1
0000 The disclosed systems and methods assist transmitted content in reaching a receiver, even if a network is subjected to sophisticated tampering. A device for a communication network including a plurality of nodes and a plurality of paths connecting a source node, which is a transmission source of information, and a terminal node, which is a destination of the information. A segmentation instruction unit being configured to instruct the source node to disperse the information into a plurality of pieces of random number data, to encode the random number data by an error correction code to generate codewords, and to order the codewords from the beginning and divide the codewords into a plurality of segments, the first transmission instruction unit being configured to instruct the source node to transmit OTP-encrypted data of the plurality of segments through the plurality of paths.
Absstract of: US20260222186A1
A first quantum key delivery device (10) comprises: a light source (11) that outputs light; a branch unit that causes light output from the light source (11) to branch to first light and second light; a random number generation unit (13) that generates a random number on the basis of the first light caused to branch by the branch unit (12); a modulation unit (14) that modulates the second light caused to branch by the branch unit (12) on the basis of the random number generated by the random number generation unit (13); and an optical transmission unit (15) that transmits the second light modulated by the modulation unit (14) as a quantum optical signal to another quantum key delivery device.
Absstract of: EP4550716A1
The present invention relates to a Quantum Key Distribution system comprising an emitter and a receiver adapted to exchange QKD-based key through a service continuity mode comprising: starting (S100) the process and triggering (S101) QKD-based key exchange between the emitter and the receiver, exchanging (S102) a first key K1 between the emitter and the receiver, generating (S103) a second key K2 at the emitter via its QRNG, and encrypting (S104) K2 with K1 as a message C, and send it to the receiver, decrypting (S105) message C with K1 to obtain K2 at the receiver, and delivering (S106, S106') K2 to the respective consumers, characterized in that the QKD exchanged key K1 is a single key with fixed size, and the encrypting and decrypting procedures of K2 are using a symmetric encryption scheme.
Absstract of: EP4550715A1
0001 The present invention relates to a Quantum Key Distribution system comprising an emitter and a receiver adapted to exchange QKD-based key comprising starting (S100) the process and triggering (S101) QKD-based key exchange between the emitter and the receiver, exchanging (S102) a first key K1 and a second key K2 between the emitter and the receiver, generating (S103) a third key K3 by expanding said first key K1 at both the emitter and the receiver; generating (S103) a fourth key K4 at the emitter via its QRNG, and encrypting (S104) K4 with K2 as a message C using a symmetric encryption scheme, and send it to the receiver, decrypting (S105) message C with K2 to obtain K4 at the receiver, generating (S106, S106') a fifth key K at the emitter and the receiver by computing K = K3 XOR K4 and delivering (S107, S107') K to the respective consumers.
Absstract of: EP4783514A1
This application discloses a quantum key distribution method, apparatus, and system, relating to the field of network technologies. A first quantum device generates a modulated optical signal that carries quantum information and classical information. Both the classical information and the quantum information are modulated on at least one polarization of the modulated optical signal, the modulated optical signal includes a plurality of subcarriers in different frequency segments, the classical information and the quantum information are on different subcarriers among the plurality of subcarriers, and the classical information includes quantum key agreement information. The first quantum device sends the modulated optical signal to a second quantum device via an optical fiber link. By modulating the quantum information and the classical information on the same polarization of the optical signal, a system achieves a high capacity. The quantum information and the classical information are modulated on subcarriers in different frequency segments within the optical signal, so that respective modulation accuracy requirements of a classical signal and a quantum signal can be satisfied. Reusing a set of devices to transmit both the quantum information and the classical information reduces hardware costs.
Absstract of: WO2025062472A1
Data (D) transmission system (10) via satellite (11), comprising at least one satellite station (40) disposed on a respective satellite (11) with which a first transmission station (20) and a second transmission station (30) are operatively connected, during use, wherein at least one of either the first (20) or the second station (30) is disposed, during use, on a mobile means of transport (12), the other being disposed on a respective mobile means of transport (12) or on a fixed point on land. The stations (20, 30, 40) comprise, respectively, at least an optical assembly (22, 32, 42) configured to transmit and/or receive one or more optical signals (SO) comprising at least a first type of optical signal (SOI) to allow the quantum distribution of encryption keys, and a transmission assembly (21, 31, 41) configured to transmit and receive one or more radio frequency signals (SR) containing data (D), wherein said optical assemblies (22, 32, 42) and said radio frequency transmission assemblies (21, 31, 41) are configured to transmit and/or receive respective pointing signals to achieve an alignment between the stations (20, 30, 40).
Absstract of: EP4783040A1
0001 A method for enhancing detection of fraudulent authentication data includes receiving, by an electronic device, data during an authentication transaction, computing a feature vector from the received data, and normalizing the feature vector. The method also includes encoding the normalized feature vector into qubits, expanding, using at least one quantum algorithm, the normalized feature vector into a high-dimensional space, and detecting in the high-dimensional space anomalies indicative of fraud based on the qubits. Furthermore, the method includes calculating, based on the detected anomalies, a confidence score reflecting a likelihood that the received data is genuine and comparing the confidence score against a threshold value. In response to determining the confidence score fails to satisfy the threshold value, the method determines that the received data requires secondary authentication.
Absstract of: WO2025012609A1
A method of key amplification by a first system and a second system of a network having a key to be amplified, a shared secret, a shared first system identity, a shared second system identity, a shared first key and a shared second key, comprising: (i) each system generating a new random number and creating a combination of the new random number and the shared first key; (ii) each system using a shared predetermined process to generate a shared nonce derived from at least each system identity; (iii) each system using a shared predetermined process to generate a shared key and using the shared key to encrypt the combination with the shared nonce; (iv) each system receiving the encrypted combination from the other system; (v) each system using the shared key to decrypt the encrypted combination with the shared nonce to obtain the combination; (vi) each system generating a key of a set of keys which is a function of the combination of the first system, the combination of the second system, the shared second key and the shared secret, and (vii) each system repeating steps (i) to (vi) a predetermined number of times to generate further keys of the set of keys which set of keys comprise an amplification of the key to be amplified. A system for key amplification is further provided.
Absstract of: US20260213854A1
0000 The present invention relates to a clock synchronization method comprising the steps of determining (S101) whether the emitter and the receiver are within acceptable frequency range difference, calculating (S102) a drift difference accumulated over a chosen time and obtaining a time compensation based on it, applying (S103) a compensation either to the clock phase shift or to the external frequency generator, and continuously (S104) tracking a frequency difference change between the emitter and the receiver by repeating the above steps.
Absstract of: US20260213955A1
0000 Prior AI governance systems operate as isolated domain silos and cannot share hardware-attested evidence across domains, generate simultaneous multi-framework regulatory proofs, or allow regulators to independently verify compliance. The present invention introduces a Universal AI Governance Fabric, a horizontal platform that federates domain-specific Trusted Execution Environment (TEE) systems under a single cryptographically unified trust state anchored to silicon root-of-trust keys inaccessible to software. A heterogeneous TEE orchestration layer verifies attestations across multiple enclave technologies including Intel SGX, AMD SEV-SNP, Intel TDX, ARM TrustZone, and major confidential computing environments. When a threshold violation occurs, an atomic cross-domain transition orchestrator simultaneously destroys baseline session keys, increments hardware monotonic counters, and activates IOMMU isolation across participating systems. A Unified Regulatory Verification Engine generates jurisdiction-specific evidence packs for major regulatory frameworks from a single zero-knowledge proof computation, enabling independent regulator verification and providing a secure, cross-domain AI governance infrastructure.
Absstract of: US20260213931A1
0000 A quantum key distribution method for quantum distribution of a key, referred to as K
Absstract of: KR102743823B1
Disclosed is a receiving device of a quantum cryptographic key distribution system, which comprises: a sensing device configured to detect a quantum signal transmitted through a quantum channel and outputting a data signal corresponding to the detected quantum signal; and a TDC configured to measure a generation time difference between a generation time of a first encoding pulse included in the data signal and a generation time of a first reference pulse included in a predetermined reference timing signal. If the generated time difference measured at as described above escapes the predetermined critical range, it is determined that an eavesdropper exists in the quantum channel.
Absstract of: US20260213950A1
0000 A system generates attested decision provenance records for artificial intelligence models. The AI model executes within a hardware-isolated enclave that prevents access or modification by external software. Before each execution, the system verifies that the correct model version is present by comparing a cryptographic model fingerprint and checking a hardware-anchored monotonic counter that prevents rollback to earlier versions. If a mismatch or rollback attempt occurs, execution is halted and the event is recorded. For each decision, the system produces a signed provenance token containing seven fields: a model hash, an input hash, a decision hash, an enclave measurement, a hardware timestamp, a version counter value, and an attestation signature covering all preceding fields. The token enables independent verification of the decision without revealing underlying data. Optional extensions include fairness evaluation, selective encryption, distributed fallback execution, post-quantum signatures, and automated compliance package generation.
Absstract of: US20260205540A1
A highly secure and adaptive Interactive Voice Response (IVR) system and method that integrates artificial intelligence, Quantum Key Distribution (QKD), and dynamic fraud prevention is disclosed herein. An Artificial Intelligence (AI) component may continuously analyze caller behavior, including speech patterns, emotional indicators, and potential scripted dialogue, to detect anomalies in real-time. The system and method may adapt IVR pathways based on these analyses, directing suspicious calls into secure environments for further investigation. Quantum encryption may safeguard all communication channels, ensuring that data transmission remains secure and tamper-evident, and electronic countermeasures may disrupt malicious actors non-destructively.
Absstract of: CN119519969A
The invention provides a preparation method, a quantum random number security chip and a quantum key generation method, and mainly relates to the technical field of quantum random number generation. The preparation method comprises the steps that a three-dimensional stacking structure is adopted, a quantum entropy source chip bare chip and a safety processing module are arranged on the first surface of a substrate and the second surface of the substrate respectively, and a plurality of copper columns are arranged on the second surface of the substrate; performing plastic packaging on the first surface of the substrate and the second surface of the substrate by adopting a plastic packaging process to obtain a plastic packaging structure wrapping the substrate; and redirecting a substrate bonding pad configured on the second surface of the substrate to a fan-out area of the substrate by using a wafer fan-out mode, and taking the salient points of the plurality of copper columns exposed outside the plastic package structure as external pins of the quantum random number security chip to obtain the quantum random number security chip.
Nº publicación: US20260205207A1 16/07/2026
Applicant:
LG ELECTRONICS INC [KR]
LG ELECTRONICS INC.
Absstract of: US20260205207A1
The present disclosure provides a method of performing user authentication in a quantum communication system. More specifically, the method includes transmitting an information sequence including at least one data block on the quantum channel, wherein based on a preshared key and at least one key generated based on the preshared key, a checking sequence for a quantum bit error rate (QBER) estimation is determined from each of the at least one data block, wherein the preshared key is used to select a location of a sequence included in the at least one data block; performing the user authentication based on a portion of the checking sequence; and performing a QBER estimation based on a result of the user authentication and a remaining checking sequence excluding the portion of the checking sequence. A user authentication error rate and a QBER estimation error rate are used for the QBER estimation.
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