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COLLUSION-RESISTANT IDENTITY-BASED AND QUANTUM-RESILIENT SECURE CORRELATION SCHEMES

Resumen de: US20260197161A1

Techniques for securing a digital ecosystem are disclosed. In embodiments, a method includes storing a master QNA object comprising s symmetric matrices, each having d rows. The master QNA is structured to allocate correlated QNA objects to cohorts of the digital ecosystem based on credentials of the cohorts. The method includes receiving a unique identifier of a cohort being admitted to the ecosystem; determining a set of s selection values based on the unique identifier of the new digital cohort and a selection function; and allocating a new QNA object comprising s vectors to the cohort based on the s selection values and the s matrices. Each selection value is between 1 and d and corresponds to a respective composite matrix of the s composite matrices such that each selection value indicates a specific row of the respective matrix to which the selection value corresponds.

Universal Quantum Access Key ,UQAK,The Gateway to Eden, Wealth, and Infinite Possibilities for Every Person, Family, Industry, and Nation

Resumen de: US20260197160A1

0000 A computer-implemented Universal Quantum Access Key (UQAK) system provides quantum-secure identity authentication, policy-controlled authorization, domain-namespace routing, and interoperable settlement. A namespace resolver resolves a human-readable identifier, parcel identifier, subdomain identifier, or basepoint identifier to a signed endpoint record. An identity module authenticates a subject identity anchor. An event-ingestion module receives a digitally signed event record, transaction request, evidence commitment, or terminal-originated payment event. A Time-Proof engine binds the event to a time reference, validity window, and anti-replay value. A policy container loads a signed, versioned policy bundle or PackSet. A transaction authorization and minting engine executes a single atomic state transition that authorizes a protected action, binds an associated token, value unit, certificate, entitlement, or authorization state, generates a decision or mint receipt, and anchors a digest in a tamper-evident data structure. A clearing and settlement module generates a settlement receipt.

System and method for quantum-based data encryption and transmission

Resumen de: US20260197162A1

0000 A system for implementing security measures to a data packet is disclosed. The system assigns each computing device with a respective encryption key. A first computing device encrypts the data packet with a first encryption key upon creation and/or before transmission. The first computing device encodes the data packet with a quantum encryption key and communicates the encoded data packet to a second computing device. The second computing device determines whether the data packet is received without being intercepted. In response to determining that the data packet is received without being intercepted, the second computing device decrypts the data packet.

METHODS AND APPARATUS FOR SELECTING A SECURITY PROFILE IN A WIRELESS COMMUNICATION SYSTEMS

Resumen de: US20260197637A1

The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). Embodiments disclosed herein relate to methods and systems for selecting a security profile in communication network. More specifically, embodiments disclosed herein relate to methods (500, 900, 2100) and systems (200) to perform a security profile selection procedure for wireless communication networks. The proposed method (500, 900, 2100) provides Post Quantum Cryptography (PQC) or quantum cryptography based security profile selection in wireless communication networks. The method (500, 900, 2100) discloses a plurality of post quantum based security profiles in User Equipment (UE) (202), mechanisms and procedures involved in selection of security profiles, which are mainly used in maintaining subscriber privacy during primary authentication procedure between the UE (202) and the communication network (204). The selected security profiles can be further used for data encryption between the UE (202) and the communication network (204). The mechanism dynamically selects the security profile that can provide better security in a given network environment.

QUANTUM SECURITY METHOD AND QUANTUM SECURITY SYSTEM

Resumen de: US20260197159A1

A quantum security method, including: determining a session key; utilizing a hash function to process the session key to obtain a first string; combining the first string, a second string and a third string into a combined string; transmitting the combined string through at least one basis to generate a first single photon sequence, and transmitting the first single photon sequence to the receiver through a quantum channel; receiving the first single photon sequence and measuring the first string and the second string through the at least one basis to obtain a first return string and a second return string respectively, and transmitting a second single photon sequence; verifying the first return string, the second return string and a third return string sequentially to obtain a first verification result; and utilizing the hash function to verify the session key to obtain a second verification result.

量子鍵配送におけるトラステッドノードを使用する通信方法及びシステム

Resumen de: EP4485842A1

The present invention relates to a QKD communication method between a first node A and a second node B through at least one intermediary node T, comprising the steps of generating, at the first node A, a key K, which is symmetrically encrypted using a key K' to create a resulting encrypted key m, encrypting, at the first node A, said message m with a key K₁ and sending this encrypted message as well as K₁ to said intermediary node T, decrypting, at said intermediary node T, the message sent from said first node A with K₁ to obtain m and then OTP-encrypting said message m with a key K₂ and sending this encrypted message as well as the key K₂ to said second node B, and decrypting, at the second Node B, the message sent from T with K₂ to obtain m and symmetrically decrypts m with the key K' to recover the key K, characterized in that K' is obtained by the steps of generating, at the first node A, a key K' and a message m' to be sent to the second node B, sending the message m' to the at least one intermediary node T via a classical communication channel, which in turn forwards it to the second node B, and obtaining, at the second node, the key K' by using a private key and the message m'.

QKD DEVICE, QKD SYSTEM, QKD CONTROL METHOD, AND COMPUTER-READABLE MEDIUM

Resumen de: EP4773543A1

According to an arrangement, a QKD device (2) includes a detection unit (21), a monitoring unit (24), and a switching control unit (25). The detection unit (21) is configured to detect a quantum signal by photons transmitted from a transmitting quantum key distribution (QKD) device. The monitoring unit (24) is configured to monitor monitoring information including a parameter based on the quantum signal. The switching control unit (25) is configured to transmit, to the transmitting QKD device (1), a switching signal for switching from a normal mode to a debug mode for enhancing intensity of the quantum signal by a predetermined value, based on the monitoring information.

Method and System for determining a cryptographic key

Resumen de: US20260189374A1

0000 The present invention proposes a computer implemented method and system for determining a cryptographic key. The method comprises constructing a tensor network with parameters representing a candidate cryptographic key; adjusting the parameters of the tensor network; generating a candidate key sample and obtaining a candidate ciphertext obtained with the candidate cryptographic key; calculating a cost function with respect to a target ciphertext, measuring an overlap between the target ciphertext and the candidate ciphertext, determining whether the overlap has reached a threshold value. If threshold value is not reached, repeating the method by further adjusting the parameters of the tensor network, if the threshold value is reached, determining that the candidate cryptographic key is the cryptographic key.

SYSTEMS AND METHODS FOR PRACTICAL QUANTUM POSITION-BASED KEY EXCHANGE

Resumen de: US20260189377A1

0000 A method may include: a third-party receiving a claimed position from a prover; the third-party and the prover exchanging quantum information; the third-party generating a third-party raw key based on the quantum information; the prover generating a prover raw key based on the quantum information; the third-party and the prover performing classical post-processing based on the raw keys; the third-party sending, a position verification request with the claimed position to a first verifier and a second verifier; the first verifier and the second verifier sending classical messages and a quantum system to the prover to arrive at a target time; the prover measuring the quantum system using the classical messages; the prover sending responses to the verifiers; the verifiers validating the responses and confirming that the responses were received within an expected time window; and the first verifier informing the third-party of a result of the validation.

METHOD AND SYSTEM TO ESTIMATE RISK FOR A SOFTWARE APPLICATION DUE TO QUANTUM THREAT

Resumen de: US20260187252A1

Conventional risk estimation techniques perform dynamic analysis of application or use models which require training data. Present disclosure provides method and system to estimate risk for a software application due to quantum threat by static analysis. A set of records pertaining to the application is received and parsed to obtain application, crypto and platform parameters. In addition, list of quantum vulnerable algorithms, number of Qubits required to break a cryptographic algorithm used by the application and a current Qubit number are also received. Then, value of Quantum Day is determined based on the current Qubit number and the number of Qubits required to break the cryptographic algorithm used by the application. Further, SOD (Severity, Occurrence, Detection) scores are calculated for each parameter, and they are multiplied to determine Risk Priority Number (RPN) for each parameter. Finally, RPNs of all parameters are summed up to estimate overall risk of the application.

SYSTEM AND METHOD FOR TRUSTLESS KEY PROVISIONING

Resumen de: US20260189373A1

A method includes providing a shared secret data to a device and also to a security service; using the provided shared secret data to provide a root key; and using the root key as a basis for a sequence of stages, wherein each stage comprises an operation which converts a start key into a different generated key, and the same stages are carried out in parallel at the device and at the security service. The root key is used as the start key for a first stage of the sequence, and a generated key produced by each stage of the sequence, except for the final stage of the sequence, is used as a start key for a next stage of the sequence. The keys produced by the last sequence stage at the device and at the security service are used to authenticate the device to the security service.

Power Supply Safety in Extreme Current Density Compute Systems

Resumen de: US20260188995A1

An apparatus and method provide safe high-current delivery on a silicon-based interconnect substrate that carries dense compute assemblies. A plurality of power supply modules are permanently affixed to the substrate and deliver power through connectorless output interconnects, eliminating field-removable power connectors. Each module is electrically isolatable upon fault while remaining mechanically attached, enabling fail-in-place service. Control circuitry sequences activation of multiple modules with guard intervals selected relative to a dominant power distribution network reflection time to reduce transient stress. Embodiments position point-of-load regulation within short distance of the loads and operate proximate a dielectric coolant, including two-phase immersion or supercritical fluids. The approach addresses arcing and hot-plug hazards and improves transient damping in extreme-current-density compute systems by shortening output paths, removing output connectors, and coordinating staged enable.

DEVICE AND METHOD FOR PERFORMING QUANTUM STATE MODULATION ON BASIS OF QUANTUM AUTHENTICATION IN QUANTUM COMMUNICATION SYSTEM

Resumen de: US20260189388A1

The present disclosure relates to a quantum communication system. Particularly, the present disclosure relates to a device and a method for performing quantum state modulation based on quantum authentication in a quantum communication system.

NEUTRINO-BASED QUANTUM SECURE KEY EXCHANGE SYSTEM

Resumen de: EP4770002A1

Verfahren zum Austausch eines kryptografischen Schlüssels zwischen einem Sender und einem Empfänger unter Verwendung eines Neutrino-basierten Kommunikationskanals, umfassend die Schritte:Senderseitige Erzeugung eines Neutrino-Strahls durch:- Beschleunigen von Protonen in einem Protonenstrahl,- Auslenkung des Protonenstrahls auf ein Target zur Erzeugung von Neutrinos durch den Zerfall kurzlebiger Teilchen;Senderseitige Generierung einer Folge von Zufallsbits, die den kryptografischen Schlüssel repräsentiert, und Kodierung der Zufallsbits durch:- Steuerung der Auslenkung des Protonenstrahls mittels eines steuerbaren Ablenksystems, um entsprechend der Zufallsbits den Protonenstrahl entweder auf das Target oder auf einen Absorber zu lenken, wodurch die Zufallsbits als Neutrino-Pulse kodiert werden;Übertragung der Neutrino-Pulse vom Sender zum Empfänger;Synchronisierung von Sender und Empfänger mittels einer Zeitsynchronisationseinheit, die die Taktung der erzeugten Neutrino-Pulse mit Zeitfenstern des Empfängersystems synchronisiert;Empfang der Neutrino-Pulse durch einen Neutrino-Detektor des Empfängers, wobei:- Zerfallsprodukte, insbesondere Lichtsignale, die bei der Wechselwirkung der Neutrinos mit einem Detektormedium erzeugt werden, detektiert werden und- die detektierten Signale jeweils einem Schlüsselbit zugeordnet werden;Speicherung und Aneinanderreihung der empfangenen Schlüsselbits zur Erzeugung des kryptografischen Schlüssels, der in einem Schlüsselspeicherm

NEUTRINO-BASED KEY EXCHANGE OVER A TRUSTED NODE

Resumen de: EP4770003A1

Verwendung eines Neutrino-Detektors als vertrauenswürdiger Knoten (Trusted Node) in einem Verfahren zum kryptographischen Schlüsselaustausch zwischen einem ersten Kommunikationsendpunkt und einem zweiten Kommunikationsendpunkt, wobei der Neutrino-Detektor:- über einen ersten Neutrino-basierten Kommunikationskanal einen ersten kryptographischen Schlüssel von dem ersten Kommunikationsendpunkt empfängt,- über einen zweiten Neutrino-basierten Kommunikationskanal einen zweiten kryptographischen Schlüssel von dem zweiten Kommunikationsendpunkt empfängt,- die beiden kryptographischen Schlüssel in einem Schlüsselspeicher speichert,- über einen öffentlichen Kommunikationskanal eine am ersten Kommunikationsendpunkt erzeugte Zufallszahl (RND) empfängt, die unter Verwendung des ersten kryptographischen Schlüssels verschlüsselt ist,- die Zufallszahl (RND) unter Verwendung des gespeicherten ersten kryptographischen Schlüssels entschlüsselt und- die entschlüsselte Zufallszahl (RND) unter Verwendung des im Schlüsselspeicher gespeicherten zweiten kryptographischen Schlüssels verschlüsselt und über einen öffentlichen Kommunikationskanal an den zweiten Kommunikationsendpunkt sendet, um dem zweiten Kommunikationsendpunkt die Rekonstruktion der Zufallszahl (RND) unter Verwendung des ihm bekannten zweiten kryptographischen Schlüssels zu ermöglichen, sodass dem ersten und dem zweiten Kommunikationsendpunkt eine gemeinsame Zufallszahl (RND) als kryptographischer Schlüssel z

密文量子密钥管理与中继方法及系统

Resumen de: CN122316608A

本发明公开了一种密文量子密钥管理与中继方法及系统，方法包括向中继节点下发路由控制信息及第一加密信息，以使所述中继节点基于所述第一加密信息将其从所连接的QKD设备接收的量子密钥密文转换为量子密钥明文异或值，并将所述量子密钥明文异或值按照所述路由控制信息指定方式中继至目的节点；所述量子密钥密文为QKD设备利用本地密钥加密密钥加密其生成的量子密钥得到，所述第一加密信息携带有与所述密钥加密密钥相同的第一密钥加密密钥；本发明中KM不掌握量子密钥的加密密钥，在进行密钥中继过程中不会出现量子密钥明文，从而降低了量子密钥泄露的风险。

SISTEMA Y METODO DE AUTENTIFICACION Y VALORACION FINANCIERA BASADAS EN ESTRUCTURAS MODULARES Y CRIPTOGRAFIA POST-CUANTICA

Delay time error measurement device based on fiber optic interferometer

Resumen de: KR20260100044A

0001a 본 발명은 광섬유 간섭계 기반의 지연 시간 오차 측정 장치에 관한 것으로서, 상세하게는 포토커플러에 의해 포톤 신호를 두 개의 경로로 나누고, 하나는 피드백 회로로, 다른 하나는 10센티미터 거리로 지연되도록 제어하는 기술을 제공하는 것으로서, 이를 통해 시간 지연 오차를 1ps 이하로 유지하며 신뢰성을 확보할 수 있는 광섬유 간섭계 기반의 지연 시간 오차 측정 장치에 관한 것이다. 본 발명에 의하면, 기준 경로와 감지 경로 사이의 시간 차이를 500ps로 고정하고 그 오차를 1ps 이하로 억제함으로써, 두 신호가 광섬유 마이켈슨 간섭계에서 형성하는 간섭 패턴의 위상차를 정확하게 제어할 수 있다. 이를 통해 수신부에서 검출되는 간섭무늬가 선명하게 유지되며, 양자 비트(Quantum Bit) 판별 시 발생하는 시간적, 위상적 오차가 최소화된다.

양자 통신 시스템에서 신호를 송수신하기 위한 장치 및 방법

Resumen de: WO2025100599A1

In the present disclosure, an operating method of a first device in a quantum communication system may comprise the steps of: receiving an initial photon sequence including a plurality of sample photons from a second device through a quantum channel; performing a first stability check on the basis of at least one of the plurality of sample photons; determining a first division sequence and a second division sequence in which a first message is encoded, on the basis of the initial photon sequence; transmitting the second division sequence to the second device through the quantum channel; performing a second stability check on the basis of at least one of the plurality of sample photons included in the second division sequence; and receiving, from the second device, a signal in which a second message is encoded.

Efficient Cryptographic Key Management in Resource Constrained Devices

Resumen de: US20260180794A1

0000 One or more embodiments address the transition to Post Quantum Cryptography (PQC) within secure element hardware environments. The embodiments focus on key management solutions for resource-constrained devices running JAVA CARD or similar platforms. PQC implementations face challenges from large key sizes that strain secure element resources, including RAM, ROM, flash memory, input/output bandwidth, and processing capabilities. The embodiments present methods for handling PQC keys through importation, exportation, generation, storage, utilization, and protection operations. The implementation manifests as an Application Programming Interface (API) that enables applications to leverage key management capabilities efficiently within secure element resource constraints. The API delivers advantages through memory optimization using flexible condensation and derivation mechanisms. Security benefits emerge from integrating key operations within the certified platform environment, enabling hardware acceleration and side-channel attack countermeasures through native code implementation.

PROXY INTERCEPTION AND DOUBLE ENCRYPTION SYSTEM AND METHODS

Resumen de: US20260178754A1

A method of enabling custom cryptography is provided. The method can include sending, by a first computing device and to a second computing device, instructions to initiate a proxy. The proxy can be configured to intercept a message of a user agent. The user agent may be associated with the second computing device. The proxy can be further configured to perform custom cryptography based on the message to obtain a modified message. The custom cryptography may comprise post-quantum cryptography. The proxy can be further configured to send the modified message to at least one of the user agent, a reverse proxy, or a third computing device. The post-quantum custom encryption and/or decryption can comprise Quantum Secure Layer (QSL), Post-Quantum Transport Layer Security (PQTLS), Kyber, SABER, Enhanced McEliece, RLCE, or a National Institute of Standards and Technology (NIST) candidate post-quantum algorithm.

コヒーレント光通信システムにおけるパイロットトーン支援復調のための装置および方法

Resumen de: WO2024261360A1

Pilot-tone-assisted demodulation procedure for coherent optical communication systems, specifically continuous-variable quantum key distribution (CV-QKD) systems, which allows compensation of random phase fluctuations in the lasers they use after acquiring the signal, solving the frequency-locking problem in a simple, efficient, and cost-effective manner.

A METHOD FOR REAL-TIME STATE-VALIDATION OF ENTANGLEMENT IN AN EXTENDIBLE QUANTUM NETWORK

Resumen de: WO2026135455A1

This disclosure pertains to a method for real-time state-validation of entanglement between at least two independent distant quantum nodes in an extendible quantum network. Each quantum node comprises at least a communication qubit. The quantum network comprises a midpoint, comprising a measurement apparatus for measuring a herald in a quantum signal, and a digital logic unit for calculating the measurement result. The method comprises the steps of receiving a hybrid signal comprising a quantum signal and a classical signal; measuring, each of the quantum signals to validate entanglement; validating the entanglement based on the outcome of the measurement and on the state-validation information of the classical signal; sending a classical message about the validation of the entanglement attempt.

MULTI-ALGORITHM BOOTSTRAPPING

Resumen de: US20260180790A1

Provided here is a computer-implemented method, system and computing device for agreeing a final symmetric key between a first party and a second party, wherein the first party is configured to communicate with the second party, the method comprising: retrieving a plurality of key exchange algorithms or key encapsulation mechanisms wherein the plurality of key exchange algorithms or key encapsulation mechanisms are each different; agreeing a set of keys using the plurality of key exchange algorithms or key encapsulation mechanisms; using the agreed set of keys to obtain a final symmetric key, according to a combination scheme that specifies how each key of the set of keys is to be used to obtain the final symmetric key; and storing the final symmetric key at the first and second party.

METHOD AND SYSTEM FOR SYNCHRONISING QKD NODES

Nº publicación: WO2026132391A1 25/06/2026

Solicitante:

QSTARBIRD B V [NL]
Q*BIRD B.V.