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QUANTUM KEY DISTRIBUTION METHOD, APPARATUS, AND SYSTEM

Resumen de: 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.

METHODS AND SYSTEMS FOR ENHANCING DETECTION OF FRAUDULENT AUTHENTICATION DATA

Resumen de: 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.

PQC QKD Method apparatus and computer program for transmitting encrypted data on PQC and QKD hybrid quantum network

Resumen de: KR20260117471A

0001a 본 발명은 PQC 및 QKD 하이브리드 네트워크에서의 암호화 데이터 전송 방법, 장치 및 컴퓨터 프로그램에 관한 것으로, 본 발명의 PQC 및 QKD 하이브리드 네트워크에서의 암호화 데이터 전송 방법은, 제1 암호화기에서 제1 암호화 처리된 제1 암호화 데이터를 수신하는 단계; 제1 암호화 데이터를 제1 암호화 메모리에 전달하는 단계; 제1 암호화 메모리에서 제1 암호화 데이터를 제1 복호화 처리하는 단계; 제1 암호화 메모리에서 제1 복호화 처리된 제1 복호화 데이터를 제2 암호화 처리하는 단계; 및 제2 암호화 처리된 제2 암호화 데이터를 제2 암호화기에 전송하는 단계;를 포함하는, 방법을 제시한다.

鍵増幅のためのシステムおよび方法

Resumen de: 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.

Hardware-Anchored Universal AI Governance Fabric with Heterogeneous TEE Orchestration, Cross-Domain Federation, and Multi-Jurisdictional Regulatory Verification

Resumen de: 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.

METHOD AND DEVICE FOR CLOCK SYNCHRONIZATION IN QKD

Resumen de: 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.

QUANTUM DISTRIBUTION METHODS AND ASSOCIATED TELECOMMUNICATIONS DEVICES

Resumen de: US20260213931A1

0000 A quantum key distribution method for quantum distribution of a key, referred to as K, to two telecommunications devices (D_ALICE, D_BOB), each connected to a quantum channel and connected to one another by a classical channel, includes: communicating, on the quantum channel, a random sequence of bits in the form of a sequence of light pulses; communicating parity bits on the classical channel; and correcting errors in the random sequence of bits on the basis of the communicated parity bits; determining the key Kon the basis of the random sequence of bits, the key being shared between the devices; wherein the communication of the parity bits is encrypted or decrypted on the basis of at least one key Kdetermined beforehand by prior implementation of a QKD quantum key distribution mechanism for quantum key distribution to the devices.

ATTESTED DECISION PROVENANCE SYSTEM FOR HARDWARE-ISOLATED AI EXECUTION

Resumen de: 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.

量子暗号通信システムの量子チャネル上の盗聴者の存在可否をＴＤＣを利用して決定する方法及びそのための量子暗号鍵分配装置

Resumen de: 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.

QUANTUM DATA COMMUNICATION NETWORKS, HUBS AND CLIENT DEVICES

Resumen de: US20260203628A1

0000 Methods and apparatus for communicating information among client devices involve encoding information in photon states at client devices, sending the photon states to a hub device, loading the photon states into quantum systems of the hub device and comparing the loaded photon states, e.g. by a parity measurement. The hub may provide quantum entanglement that may be consumed in making parity measurements. Applications include quantum key distribution.

SYSTEMS AND METHODS FOR QUANTUM KEY DISTRIBUTION NETWORKS

Resumen de: WO2026151451A2

A system for implementing a quantum key distribution network, the system comprising: one or more quantum transmitters configured to transmit quantum encoded photons; a single state receiver, configured to receive the photons and determine encoded bits under a first protocol; a bell state receiver configured to receive quantum encoded photons under a second protocol; and a manager configured to determine a basis of encoding of the quantum encoded photons and to control communication between the one or more quantum transmitters and the single state receiver based on the first protocol or the bell state receiver based on the second protocol.

製造方法、量子乱数セキュリティチップ及び量子鍵生成方法

Resumen de: 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.

MEASURES OUTPUT METHOD, MEASURES OUTPUT DEVICE, AND RECORDING MEDIUM

Resumen de: US20260205492A1

A measures output method is to be executed by a computer. The measures output method includes: obtaining respective importance levels of a plurality of partitions for separating a plurality of functional sections to be mounted on a vehicle, the plurality of functional sections including a first partition to which a first functional section at a source belongs, and a second partition to which a second functional section at a destination belongs; determining a security measure for a communication from the first functional section to the second functional section based on a first importance level of the first partition and a second importance level of the second partition; and outputting information on the security measure determined.

AUTHENTICATION METHOD USING PRE-SHARED SYMMETRIC KEY FOR LOCATION SELECTION OF AUTHENTICATION INFORMATION IN QUANTUM COMMUNICATION SYSTEM, AND APPARATUS THEREFOR

Resumen de: 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.

Hardware-Anchored DAO Governance Engine with Quantum-Resistant Attestation

Resumen de: US20260205302A1

Every major DAO governance failure traces to a common root cause: governance logic, voting, and treasury access reside in software that adversaries can reach. The disclosed invention provides a hardware-anchored DAO governance architecture defeating five adversary classes. A supply-chain attestation layer verifies firmware integrity against a public transparency log at node initialization. A Silicon Root-of-Trust Anchor Layer binds governance to processor-embedded cryptographic keys. A Heterogeneous TEE Orchestration Layer enforces Byzantine fault-tolerant canonical quorum through threshold BLS signatures across independent hardware architecture families. An Atomic Governance Transition Engine executes indivisible state changes: record incorporation, key destruction, counter advancement, and IOMMU treasury isolation. A Quantum-Resistant Governance Key Lifecycle Engine performs CRYSTALS-Kyber (ML-KEM, FIPS 203) key rotation with cryptographic agility. A Cross-Chain Governance Attestation Bridge publishes TEE-signed proofs to multiple blockchains. A Deterministic Governance Replay Engine reconstructs governance decisions in isolated sandboxes. An Automated Governance Incident Response Engine and Governance Regulator Verification Network provide hardware-enforced, independently auditable compliance enforcement.

HARDWARE-ANCHORED DAO GOVERNANCE ENGINE WITH QUORUM VERIFICATION AND REGULATORY COMPLIANCE

Resumen de: US20260205309A1

Existing DAO governance systems operate entirely in software, allowing majority voters to execute proposals regardless of risk controls, enabling privileged actors to forge compliance logs, and forcing regulators to rely on unverifiable system reports. The present invention addresses these limitations by executing governance-critical logic within Trusted Execution Environments (TEEs), hardware-isolated processor regions inaccessible to operating systems, cloud providers, and blockchain nodes. The architecture introduces five elements: a Multi-TEE Quorum Verification Layer requiring agreement from three independent TEEs before authorization; an On-Chain Attestation Registry preventing counterfeit governance engines; a Regulatory Verification Network enabling independent compliance validation; a Post-Quantum Attestation Layer securing evidence for long-term retention; and Automated Treasury Safeguards including hardware-enforced freezes, circuit breakers, and insurance triggers. When violations are confirmed by quorum, cryptographic keys are destroyed, hardware counters advance, and network isolation activates, making non-compliant execution physically impossible while producing zero-knowledge proofs usable across multiple regulatory frameworks.

VIBRATION-INDUCED, POST-QUANTUM ENCRYPTION SYSTEM USING CYMATICS-BASED KEY GENERATION

Resumen de: US20260205280A1

A post-quantum encryption system utilizes cymatics patterns formed in a liquid medium (102) for high-entropy cryptographic key generation. The system includes a container (101) holding the liquid medium, and one or more vibration sources (105) configured to generate acoustic waves that induce dynamic ripple formations. A temperature control unit (106) adjusts the medium's thermal state to modulate waveform complexity. Sensors (107), including high-speed imaging units (108) and interferometric sensors (109), capture wave patterns in real-time. A signal processing module extracts parameters such as amplitude, wavelength, and frequency, which are converted into a cryptographic key via a secure interface. The key may be used in symmetric, asymmetric, or post-quantum algorithms. Optionally, a quantum key distribution (QKD) module (127) transmits the generated key securely. The invention leverages physical randomness and acoustic-fluid dynamics to provide scalable, tamper-resistant encryption suitable for next-generation security infrastructure.

Artificial Intelligence Enhanced Interactive Voice Response (IVR) with Quantum Security and Dynamic Fraud Prevention

Resumen de: 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.

Verfahren und System zur Simulation von Quantenkommunikationsvorgängen

Resumen de: DE102025101067A1

Die vorliegende Offenbarung betrifft ein Verfahren und ein System zur Simulation eines Quantenkommunikationsvorgangs. Das Verfahren weist folgende Schritte auf: Bereitstellen, in einer Datenverarbeitungseinheit (10), von Quantenkommunikationsinformationen für mindestens einen zu simulierenden Quantenkommunikationsvorgang zwischen mindestens einer ersten Quantenkommunikationsvorrichtung (30), einer zweiten Quantenkommunikationsvorrichtung (31) und einer Abhörvorrichtung (33) über mindestens einen Quantenkanal (32); Bestimmen, in der Datenverarbeitungseinheit (10) und aus den Quantenkommunikationsinformationen, von Steuerungsdaten für einen Quantenprozessor (14), in dem Quantenoperationen auf Quantenteilchen angewendet werden, die Ionen oder neutrale Atome sind und die innerhalb mehrerer Operationsbereiche (21) räumlich kontrollierbar sind; und Simulieren des Quantenkommunikationsvorgangs in dem Quantenprozessor (14) mittels der Steuerungsdaten. Hierbei ist einem Quantenbit des Quantenkommunikationsvorgangs jeweils eines der Quantenteilchen zugeordnet. Kommunikationsoperationen des Quantenkommunikationsvorgangs entsprechen jeweils mindestens einer der Quantenoperationen, wobei die Quantenoperationen mindestens eine erste Quantenoperation für die erste Quantenkommunikationsvorrichtung (30), mindestens eine zweite Quantenoperation für die zweite Quantenkommunikationsvorrichtung (31) und mindestens eine dritte Quantenoperation für die Abhörvorrichtung (33) umfassen. Des W

QUANTUM KEY DISTRIBUTION SYSTEM AND METHOD

Resumen de: WO2026149671A1

A continuous-variable Quantum Key Distribution system is provided, comprising a transmitter and a receiver. The receiver comprises a detection part and a lossy optical element arranged between the transmitter and the detection part. The transmitter modulates a quantum signal and sends it to the receiver through a quantum channel. The lossy optical element is configured to: distribute N input modulated quantum signals into M output modulated quantum signals, with N, M ≥ 1, wherein one of the N input signals is associated to the transmitter and the other N-1 signals are vacuum signals; and provide to the detection part one of the M output modulated quantum signals. The receiver detects, with the detection part, one or more quadrature components of the one modulated quantum signal, and performs a post-processing procedure with the transmitter based on the detected quadrature component(s) and an amount of optical loss of the lossy optical element.

QUANTUM DERIVED UNIQUE KEY PER TRANSACTION

Resumen de: US20260205281A1

0000 The arrangements disclosed herein relate to systems, apparatus, methods, and non-transitory computer readable media for Quantum for DUKPT (Q-DUKPT), where an Initialization Key (IK) using a Quantum Random Number Generator (QRNG). An identifier for a device is generated by performing XOR on a Base Derivation Key (BDK) and the IK. The device derives a key for each transaction to encrypt original data using IK or a previous key. The host receives from the device the encrypted original, the identifier, and a counter that indicates a current number of transactions. The host runs the same derive function used by the device for a number of iterations equal to the current number of transactions with IK as the initial input, to derive the key used to by the device to encrypt the original data.

QUANTUM ENCRYPTION

Resumen de: WO2025052024A1

The invention relates to a quantum-mechanical encryption key stretching method. The method comprising encoding an input key into a set of quantum mechanical states, scrambling the encoded quantum mechanical states into a larger number of quantum mechanical states and deriving an enhanced encryption key from the larger number of5 quantum mechanical states. The invention also includes methods of encrypting and decrypting data using the enhanced encryption key and method of deriving the enhanced key. A further aspect of the invention relates to a method for encrypting data by encoding the data in a set of quantum mechanical states and performing a scrambling operation on those quantum mechanical states.

QUANTUM CRYPTOGRAPHY COMMUNICATION CONTROL DEVICE, QUANTUM CRYPTOGRAPHY COMMUNICATION SYSTEM, QUANTUM CRYPTOGRAPHY COMMUNICATION CONTROL METHOD, AND COMPUTER PROGRAM PRODUCT

Resumen de: EP4776563A1

In a quantum cryptography communication control device according to one arrangement, a collection unit collects link information of a link for which a local key is generated by quantum key distribution and a global key guarantee amount of each of a plurality of application pairs executing cryptography communication using a global key. A calculation unit calculates a link cost used for selecting a relay route of the global key based on the link information. A guarantee amount calculation unit calculates a local key guarantee amount allocated to the link for relaying the global key of each of the plurality of application pairs such that the guaranteed amounts of global keys for the plurality of application pairs are simultaneously satisfied. The selection unit selects the relay route of the global key based on the link cost and the local key guarantee amount.

ＢＢ８４プロトコル偏光状態をエンコードし補正するためのシステムおよび方法

Resumen de: WO2025012492A1

The invention relates to a system for encoding and correcting BB84 protocol polarisation states, which implements a method for measuring the polarisation error by carrying out said measurement before a step of transmitting the information and can be used in any system in which it is desired to implement quantum key distribution (QKD).

SYSTEM FOR MONITORING DISASTER ENVIRONMENT USING QUANTUM CRYPTOGRAPHIC COMMUNICATION AND METHOD PERFORMING THEREOF

Nº publicación: KR20260109459A 10/07/2026

Solicitante:

KIM SUNG JOONG [KR]
KIM HYUN SUK [KR]
\uAE40\uC131\uC911
\uAE40\uD604\uC219

Resumen de: KR20260109459A

본 발명에 따른 양자암호통신을 이용한 재난 환경 모니터링 시스템은 다양한 센서 데이터를 실시간으로 수집하고, 양자암호통신 모듈을 통해 암호 키를 공유하기 위한 랜덤 비트열을 생성하고 각 비트열을 양자 상태로 변환하여 중앙 모니터링 서버에 제공하고 상기 암호 키를 이용하여 상기 센서 데이터를 암호화하여 중앙 모니터링 서버에 제공하는 재난 감시용 스마트 컨트롤러 및 상기 재난 감시용 스마트 컨트롤러로부터 수신된 양자 상태를 측정하여 키 후보를 생성하고, 상기 키 후보 중 하나의 키를 최종 암호 키로 결정하고 상기 최종 암호 키를 이용하여 상기 암호화된 센서 데이터를 복호화하고, 상기 센서 데이터를 이용하여 재난 상태를 감시하는 중앙 모니터링 서버를 포함할 수 있다.