Alerta

Verifikation der Sicherheit der Implementierung von Quantenkommunikationsprotokollen

Resumen de: DE102024004187A1

Die Erfindung betrifft eine Verifikationsbaugruppe (100) zur Verifikation der Sicherheit eines Quantenprotokolls, QKD, umfassend: einen Quantenkanaleingang (110); einen Weiterleitungsquantenkanal (130); einen Quantenkanalausgang (120); einen Anschluss (140) für eine Abhörleitung (140), der dazu vorgesehen ist, an einem öffentlichen Kommunikationskanal angeschlossen zu werden; und einen Kommunikationsanschluss (150) für eine Kommunikationsleitung (150), der dazu vorgesehen ist, mit einer externen Vorrichtung in bidirektionaler Kommunikation verbunden zu werden.

PROCEDE, DISPOSITIF ET SUPPORT BASES SUR DES ETATS GHZ POUR L’ECHANGE MULTIPARTITE D’INFORMATIONS

Resumen de: BE1033110A1

La présente invention divulgue un procédé, un dispositif et un support de stockage pour l’échange multipartite d’informations basé sur des états GHZ, appartenant au domaine technique des communications quantiques. Le procédé comprend les étapes suivantes : tout d’abord, un STTP prépare des particules en état GHZ et les distribue ; les utilisateurs appliquent des opérateurs unitaires de type bit, puis renvoient les particules ; le STTP effectue une mesure conjointe et publie les résultats afin d’assister les utilisateurs dans la détermination de l’encodage ; ensuite, après l’échange, les utilisateurs appliquent une seconde fois des opérateurs et renvoient à nouveau les particules ; le STTP procède à une nouvelle mesure conjointe et publie les résultats, permettant aux utilisateurs de déduire les informations en clair des autres parties ; enfin, chaque partie calcule et diffuse une valeur de hachage, et si les valeurs sont cohérentes, l’échange est confirmé comme réussi.

ML BASED SECURITY PROOF OF QUANTUM COMMUNICATION PROTOCOLS WITH NOISY QUANTUM CHANNELS

Resumen de: WO2025093378A1

Disclosed is a method for sharing information using a data sharing system comprising a sender node and a receiver node using a noisy quantum channel in accordance with a quantum communication protocol, the method comprising: providing a trained machine learning model, the machine learning model being configured to receive a set of parameters of a given system and noise model in order to predict whether the given system is secure or unsecure for sharing information according to the quantum communication protocol, the set of parameters indicating a level of success of an attack by a third party and a reception success at a receiver node of the given system and being descriptive of the given system; evaluating the set of parameters for the data sharing system for sharing the information; inputting the evaluated set of parameters and the noise model to the machine learning model, thereby receiving a prediction of a security of the data sharing system; aborting the quantum communication protocol if the data sharing system is predicted as being unsecure.

INTEGRATED QUANTUM RANDOM NUMBER GENERATOR

Resumen de: WO2025061895A1

The invention relates to a node of a network, the node comprising a monolithically integrated entropy source having: a photon source that is designed to emit photons, the photon source comprising a first outer shell, said first outer shell being formed by a first base surface, a first top surface, and at least one first side surface connecting the first base surface and the first top surface to one another; and a photon detector that is designed to detect the photons emitted by the photon source, the first base surface of the photon source being arranged so as to face the photon detector.

在安全元件平台运行时环境中执行数字签名操作

Resumen de: US2025148071A1

0000 A system performs a set of cryptographic operations at least by utilizing an API to cause execution of a set of one or more secure element (SE) applications within the SE platform runtime environment of a first computing entity. The set of cryptographic operations include generating a first shared secret, generating a ciphertext at least by encapsulating the first shared secret with a first public key associated with a second computing entity in accordance with an encapsulation algorithm, and transmitting the ciphertext from the first computing entity to the second computing entity. The second computing entity derives the first shared secret by decapsulating the ciphertext with a private key corresponding to the first public key. The first computing entity and the second computing entity then exchange at least one encrypted message, encrypted with an encryption key that includes, or is based at least in part on, the first shared secret.

委任量子計算のプライバシーを強化する方法、及びそのような方法を実施するシステム

Resumen de: EP4472127A1

The invention concerns a method for enhancing the privacy of delegated quantum computations, involving: a client (A) whose aim is to solve a computational problem based on sensitive data and/or using a sensitive algorithm, and a cloud computing service provider (B) who has quantum computing capacities superior to the client (A) and is therefore capable of solving the problem and/or running the client's desired algorithm; wherein the method comprises a sequence including the following steps: a) a light emitter (10) controlled by the client (A) emits at least one pulse (11) having a specific quantum state (S1), b) a quantum emitter (20) controlled by the provider (B) receives the pulse (11), c) the quantum emitter (20) emits a single photon (21) supporting a photonic qubit (Q2), with a relationship being defined between the quantum state (S1) of the pulse (11) and the photonic qubit (Q2). The invention also concerns a system for implementing this method.

Method And System For Processing Personal Information Using Trust Execution Environment Based On Smart Contract

Resumen de: US20260154413A1

A method for processing personal information using a smart contract-based trusted execution environment comprises the steps of: generating a trusted execution environment including a data processing code and a second encryption key in a data processing platform server in response to a data processing request according to a smart contract on a blockchain; acquiring first data and a first encryption key from a data generation device and an encryption key supply device; decrypting the first data using the first encryption key; generating a data processing result by processing the decrypted data according to the data processing code; providing the data processing result to the data processing request device; and destroying the trusted execution environment according to the smart contract.

ELECTRONIC DEVICE AND METHOD FOR PROCESSING SECURE DATA THEREOF

Resumen de: US20260155994A1

Provided is a secure data processing method and device for performing same. The device includes: a communication circuit; a secure chipset; a memory storing instructions; and a processor configured to execute the instructions to: provide a first secure domain and a second secure domain, and wherein the processor is configured to execute the instructions to: receive a script forwarded from an external entity to the first secure domain through the communication circuit, obtain an authentication certificate and a digital signature of the external entity by parsing the script, cause the secure chipset to verify the authentication certificate by using a first authentication key related to the authentication certificate of the external entity stored in the first secure domain; extract a second authentication key from the authentication certificate; and cause the secure chipset to validate the digital signature by using the second authentication key.

SYSTEMS AND METHODS FOR QUANTUM POSITION-BASED KEY EXCHANGE

Resumen de: US20260155961A1

0000 A method may include: a first verifier receiving a request for a claimed position verification from a prover; the first verifier randomly generating a first bitstring and a second bitstring; the first verifier sending the first bitstring and the second bitstring to a second verifier; the first verifier preparing a quantum system and sending the quantum system to the prover; the first verifier sending the first bitstring to the prover; the second verifier sending the second bitstring to the prover such that the first bitstring and the second bitstring arrive at the claimed position at the same time; the first verifier validating a response received from the prover; and the first verifier confirming that the response was received within an expected time window.

QUANTUM NETWORK NODE AND PROTOCOLS WITH MULTIPLE QUBIT SPECIES

Resumen de: US20260154602A1

A quantum networking node is provided for use in a modular optical architecture for quantum computing. The quantum networking node includes multiple memory qubits; and one or more communication qubits. The multiple memory qubits and the one or more communication qubits are part of a lattice in an ion trap. Moreover, the memory qubits and the communication qubits are made from a pair of different ion species, each ion species of the pair of different ion species being individually selected from Ba, Ca, Sr, or Mg.

SYSTEMS AND METHODS FOR REMOTE QUANTUM KEY DISTRIBUTION

Resumen de: US20260155960A1

0000 A first party quantum trusted executed environment (QTEE) receives a first party initial key from a first party and generates an expanded key; a second party QTEE receives a second party initial key from a second party and generates an expanded key; an untrusted third party controls an untrusted quantum source to distribute an input quantum system to the QTEEs; the first party QTEE encodes the input quantum system into a first quantum system and sends the first quantum system to the untrusted third party; the second party QTEE encodes the input quantum system into a second quantum system and sends the second quantum system to the untrusted third party; the untrusted third party performs an entangling measurement on the quantum systems resulting an entangling measurement outcome and sends to the parties; and the parties generate secret keys using the expanded keys and the entangling measurement outcome.

SYSTEMS AND METHODS FOR SOURCE-INDEPENDENT QUANTUM POSITION VERIFICATION

Resumen de: US20260154441A1

0000 A method may include: a first verifier receiving a request for position verification comprising a claimed position from a prover electronic device; the first verifier generating two first bitstrings and sending one of the bitstrings to a second verifier; the prover preparing two entangled quantum systems and sending one of the quantum systems to the first verifier; the first verifier measuring the first quantum system; each of the first verifier and the second verifier sending one of the bitstrings to the prover electronic device so that they arrive at the claimed position at the same time; the prover electronic device measuring the second quantum system and sending responses to the two verifiers with the measurement; the first verifier confirming that the responses were received within an expected time window and are valid.

ADAPTIVE QUANTUM-BASED VOICE OVER INTERNET PROTOCOL (VoIP) SECURITY

Resumen de: US20260155959A1

0000 Systems, methods, and apparatus are provided for adaptive, quantum-based VoIP security. A biometric voiceprint may be generated from a VoIP communication. In response to failure to authenticate the voiceprint, the sound waves associated with the voiceprint may be selectively neutralized without terminating the VoIP communication. In response to authentication of the voiceprint, a biometric key may be generated based on the voiceprint. A quantum encryption key may be generated and distributed via a quantum channel. A VoIP session key may be generated based on the biometric encryption key and the quantum encryption key and used to encrypt the VoIP communication. An ambient sound associated with the VoIP communication may be isolated. In response to failure to authenticate the ambient sound, the caller may be required to provide an additional form of authentication.

ELECTRONIC DEVICE AND METHOD FOR ACTIVATING A VEHICLE FEATURE ON DEMAND (FOD) SERVICE AND AN FOD SERVER AND METHOD FOR SUPPORTING A VEHICLE FOD SERVICE

Resumen de: US20260155962A1

A method for activating a vehicle feature on demand (FoD) service by an electronic device includes requesting information related to the FoD service from an FoD server. The method further includes receiving information related to the FoD service for a vehicle from the FoD server. The method further includes verifying an electronic signature included in the received information related to the FoD service for the vehicle. The method further includes decrypting information for activating the FoD service included in the received information related to the FoD service for the vehicle. The method further includes activating the FoD service when the electronic signature is successfully verified and the information for activating the FoD service is successfully decrypted. The method further includes transmitting a result of the activated FoD service to the FoD server.

A SYSTEM AND METHOD FOR TIME TRANSFER

Resumen de: GB2642294A

System for time transfer between a first and second clock, comprising an entangled photon transmitter 100, a first photon receiver 200 comprising first clock 600, and a second photon receiver 300 comprising second clock 700. Entangled photons are generated and first 114 & second 116 photons are transmitted to the respective receivers 200/300. At the receivers 200/300, respective series of emission timestamps are determined by removing respective time of flight offsets from each detection timestamp. A clock offset between the first 600 and second clock 700 is determined by calculating a cross-correlation between the respective series of emission timestamps, and time is transferred by adjusting either clock by the clock offset. A group clock offset may be determined from an average of a plurality of clock offsets, and the clocks may be adjusted by the group clock offset. The transmitter 100 may be at a satellite. The time of flight offsets may be determined using a synchronisation laser system or a laser ranging beam.

SECURITY PROOF OF QUANTUM COMMUNICATION PROTOCOLS

Resumen de: WO2025093379A1

Disclosed is a method for sharing information between a sender node and a receiver node in accordance with a quantum communication protocol. The method comprises: determining an attack configuration for access by a third party to the quantum channel, the attack configuration being defined by at least a quantum circuit system having specific parameters and an attack success bound, the quantum circuit system being configured to intercept a qubit on the quantum channel, determine the state of the intercepted qubit; using the quantum circuit system to measure first and second metrics by at least intercepting qubits on the quantum channel; determining whether the second metric fulfils an error tolerance bound and whether the first metric fulfills the attack success bound; aborting the communication protocol if the second metric fulfils the error tolerance bound and the first metric fulfills the attack success bound.

CONTINUOUS VARIABLE-QUANTUM KEY DISTRIBUTION SYSTEM AND METHOD

Resumen de: WO2025045383A1

A CV-QKD system comprising a plurality of transmitters, one or more splitters, and a plurality of receivers is provided. Each transmitter modulates a quantum signal according to a discrete or continuous distribution in phase and amplitude. Each splitter distributes N modulated quantum signals, received from a respective transmitter or from another splitter, into M modulated quantum sub-signals. Each receiver is configured to: receive, via a respective quantum channel, a modulated quantum sub-signal associated to one or more of the transmitters from the one or more splitters; detect one or more quadrature components of the received modulated quantum sub-signal; and perform a respective post-processing protocol with one or more of the plurality of transmitters to generate one or more individual final secret keys between the one or more transmitters and the receiver and/or one or more common secret keys between the one or more transmitters and the plurality of receivers.

METHOD AND DEVICE FOR GUARANTEEING AUTHENTICITY OF DIGITAL DATA

Resumen de: EP4518243A1

0001 In the method for guaranteeing authenticity of digital data, data are considered that are digitally signed with a pre-quantum signature and the method comprises the steps of generating a time stamp and digitally signing the pre-quantum signature together with the time stamp using a post-quantumg signature.

TECHNIQUES FOR DISTRIBUTING ENTANGLED PHOTONS AS A SERVICE

Resumen de: EP4749986A1

Techniques for exposing entangled quantum states is disclosed, comprising the following steps:• storing entangled quantum states in a quantum memory at a network node;• storing metadata associated with the quantum states in a classical metadata memory, wherein the metadata includes a physical storage address, a time slot identifier and a logical identifier;• requesting the entangled quantum states from the quantum memory via a classical API;• exposing the entangled quantum states to users of a quantum communication protocol over a quantum communication channel.

QUANTUM KEY MANAGEMENT SYSTEM FOR NETWORK NODE, COMMUNICATION NETWORK, METHOD, COMPUTER PROGRAM

Resumen de: EP4749988A1

Provided is a first network node for communicating with a second network node. The first network node includes circuitry configured to locally generate a first encryption key. The circuitry is further configured to communicate the first encryption key to the second network node via a first communication path. The circuitry is further configured to receive a second encryption key from the second network node via a second communication path. The second communication path involves at least one third network node different from a fourth network node of the first communication path. The circuitry is further configured to communicate encrypted payload data with the second network node. The encryption is based on a combination of the first and second encryption keys.

IMPROVED METHOD FOR QUANTUM NETWORK-BASED TRANSPORT KEY EXCHANGE WITH CENTRALIZED KEY MANAGER; RELATED COMMUNICATION INFRASTRUCTURE AND COMPUTER PROGRAM PRODUCT

Resumen de: EP4749990A1

Dans ce procédé, un gestionnaire de clés centralisé (40) tient à jour une base de données avec les clés de chacun des nœuds (30_i) du réseau QKD, et, lors de la réception d'une route pour échanger un aléa (K₀) entre un émetteur et un destinataire, sélectionne une clé pour chaque paire de nœuds de la route et transmet, en parallèle à chacun des nœuds de la route, une commande (C_i) identifiant la clé qu'il partage avec le nœud précédent et la clé qu'il partage avec le nœud suivant. Chaque nœud somme (140) les deux clés identifiées et envoie une réponse à l'unité XOR (44), qui construit une chaine globale (K) avant de la transmettre au destinataire pour extraction de l'alea.

TECHNIQUES FOR PROVIDING AN ENTANGLEMENT DISTRIBUTION FOR QUANTUM APPLICATIONS IN FORM OF AN ENTANGLEMENT DISTRIBUTION AS A SERVICE (EDAAS)

Resumen de: EP4749998A1

A system for providing an entanglement distribution for quantum applications in form of an Entanglement Distribution as a Service (EDaaS), comprising:A network provider plane configured to manage the generation, distribution, forwarding, and storage of entangled quantum states across a quantum network, the network provider plane comprising:- One or more quantum optical elements especially single photon sources, fiber-optic links, beam splitters, single-photon detectors, and quantum memories for generating and maintaining entangled photonic states;- A quantum link layer providing quantum optical connections to distribute entangled photon states between directly connected network nodes;- A quantum network layer configured for dynamic routing of quantum states across multiple optical paths between network nodes;An Application Programming Interface (EdaaS-API) operable at the service level, said API comprising:- A state retrieval interface configured to provide applications with logical and physical addresses of stored quantum states within the quantum memories;- A Q-Push interface configured to enable the export of selected quantum states, based on physical storage addresses, over a quantum channel by triggering the release of entangled photon states;A software-defined network (SDN) management layer configured to dynamically manage the configuration, monitoring, and routing of entangled states across the quantum network, said SDN management layer comprising:- A service configura

METHOD APPARATUS SYSTEM AND COMPUTER PROGRAM FOR MANAGING QUANTUM CRYPTOGRAPHIC COMMUNICAION NETWORK

Resumen de: KR20260075466A

0001a 본 발명은 본 발명은 양자 암호 통신 네트워크 관리 방법, 장치 및 컴퓨터 프로그램에 대한 것으로서, 보다 구체적으로 컴퓨팅 장치를 이용하여 복수의 노드를 구비하는 양자 암호 통신 네트워크를 관리하는 방법에 있어서, 상기 복수의 노드 중 시작 노드와 목적 노드 및 하나 이상의 중계 노드를 포함하는 양자키 중계 경로를 산출하는 단계; 및 상기 산출된 양자키 중계 경로를 이용하여 상기 시작 노드에서 상기 목적 노드로 제1 양자키를 전달하는 단계를 포함하며, 상기 전달하는 단계에서는, 상기 제1 양자키에 대한 제1 유효 기간 정보를 함께 전달하여 상기 시작 노드 또는 상기 목적 노드에서 상기 제1 유효 기간 정보를 기초로 상기 제1 양자키에 대한 관리를 수행하도록 하는 방법을 개시한다.

ML BASED SECURITY PROOF OF QUANTUM COMMUNICATION PROTOCOLS

Resumen de: WO2025093381A1

Disclosed is a method for sharing information using a data sharing system comprising a sender node and a receiver node using a quantum channel in accordance with a quantum communication protocol, the method comprising: providing a trained machine learning model, the machine learning model being configured to receive a set of parameters of a given system in order to predict whether the given system is secure or unsecure for sharing information according to the quantum communication protocol, the set of parameters indicating a level of success of an attack by a third party and a reception success at a receiver node of the given system and being descriptive of the given system; evaluating the set of parameters for the data sharing system for sharing the information; inputting the evaluated set of parameters to the machine learning model, thereby receiving a prediction of a security of the data sharing system; aborting the quantum communication protocol if the data sharing system is predicted as being unsecure.

NETWORK NODE AND COMMUNICATION NETWORK

Nº publicación: EP4749987A1 27/05/2026

Solicitante:

DEUTSCHE TELEKOM AG [DE]
UNIV MUENCHEN TECH [DE]
Deutsche Telekom AG
Technische Universit\u00E4t M\u00FCnchen