Alerta

METHOD AND SYSTEM FOR KEY DISTRIBUTION IN A COMMUNICATION SYSTEM

Absstract of: WO2026175532A1

Provided is a method for key distribution in a communication system comprising a source node, at least one intermediate node, and at least one destination node. The method comprises receiving a request for distributing a key to the at least one destination node, the request including a policy requirement for distributing the key from the source node via the at least one intermediate node to the at least one destination node. Furthermore, the method comprises distributing the key from the source node to the at least one destination node based on the policy requirement. A report is transmitted, the report providing feedback regarding the key distribution based on the policy requirement.

MULTI-AXIS MEASUREMENT PROTOCOL TO PROTECT QUANTUM INFORMATION

Absstract of: US20260254622A1

Systems and methods for implementing a multi-axis measurement protocol to protect quantum information are disclosed herein. A method includes generating at least one input qubit data for transmission. Further, the method includes determining one or more qubit measurement operations to be performed on the qubit data. The method then include generating one or more entangled pairs of qubits comprising first set of qubits and second set of qubits. Also, the method includes creating entangled data by entangling the input qubit data with the first set of qubits. The method then includes performing the determined at least one appropriate qubit measurement operation on the created entangled data to orientate a state of the created entangled data before transmission. Further, the method includes generating two classic bits for the created entangled data based on the performed appropriate qubit measurement operation and transmitting to the receiver via a classic communication channel.

FPGA AI FPGA-Based Quantum-Resistant Encryption AI Correction and Blockchain-Integrated UAV Sensor Data Protection System

Absstract of: KR20260127559A

본 발명은 무인이동체의 센서 데이터 보호 및 신뢰성 향상을 위한 기술로, FPGA 기반 양자 내성 암호화(PQC), AI 기반 센서 데이터 보정, 블록체인을 이용한 데이터 무결성 보장 기술을 결합한 시스템 및 방법을 제공한다. FPGA 보안 모듈은 TRNG/QRNG를 활용해 난수를 생성하고, PQC 가속기를 통해 보안 키를 생성하여 센서 데이터를 양자 컴퓨터 기반 해킹으로부터 보호한다. AI 모듈은 센서 데이터의 실시간 오차 보정과 이상 감지를 수행하며, 블록체인 모듈은 데이터 위변조 방지 및 무결성 검증을 담당한다. 본 발명은 무인이동체뿐만 아니라 자율주행, 항공우주, 스마트 공장, 의료 데이터 보호 등 다양한 분야에 적용될 수 있다.

CROSS-INDUSTRY ADAPTIVE ACCESS CONTROL AND ASSET MANAGEMENT SYSTEM WITH PROOF-OF-EFFORT BLOCKCHAIN ARCHITECTURE

Absstract of: US20260244773A1

A system for adaptive access control and asset management comprises a metric collection layer configured to capture real-time user metrics from integrated systems. A blockchain layer provides an immutable, quantum-resistant ledger for storing access events, asset records, and compliance data. An authorization layer manages adaptive access control based on effort scores, access thresholds, and effort decay mechanisms. A data integration layer interfaces with external applications for data access, analytics, and reporting. The metric collection layer captures task completion, accuracy, and engagement metrics. The blockchain layer employs a hybrid model combining on-block and off-block storage. The authorization layer includes a BlockCipher Module for making access decisions based on calculated effort scores and predefined thresholds. The data integration layer facilitates integration of AI algorithms for behavior analysis and predictive insights. The system enables secure, adaptive access control and asset tracking across industries like finance, healthcare, supply chain, and government sectors.

METHOD FOR THE IMPLEMENTATION OF LEFT-NODE AUTHENTICATION IN HASH-BASED SIGNATURES XMSS AND LMS

Absstract of: US20260246624A1

0000 A computer-implemented method utilizing an algorithmic-based approach to find a memory-efficient left-node authentication path in XMSS and LMS post-quantum cryptography algorithms that includes providing a computer with at least one processor operably configured to carry out a post-quantum cryptographic authentication session having an authentication path and operably configured to execute computer readable instructions having an algorithm with three subroutines, a first subroutine that includes generating an index value integer of authentication path nodes within the authentication path needing updating, a second subroutine that includes initializing a left node variable and initializing a right node variable based on a generated leaf position, and a third subroutine that includes iterating the left and right node variables with a merging operation until reaching the index value integer and swapping the left node variable with an indexnode within the authentication path.

QUANTUM KEY DISTRIBUTION SYSTEM, TRANSMITTER, RECEIVER AND METHOD

Absstract of: US20260246625A1

An auto-compensating QKD system. The system includes a QKD transmitter and a QKD receiver. The QKD receiver is configured to send an initial optical pulse train to the QKD transmitter and to receive a reference optical pulse train followed by a signal optical pulse train from the QKD transmitter. The QKD transmitter is configured to receive the initial optical pulse train from the QKD receiver and to send the reference optical pulse train and the signal optical pulse train to the QKD receiver.

FPGA TRNG PQC FPGA and TRNG-Based PQC Secure Communication System for Remote Video Sensing Device Control Method and System

Absstract of: KR20260126587A

본 발명은 FPGA 기반 보안 통신 시스템을 활용한 원격 영상 감지 장비 조작 방법에 관한 것이다. 영상 감지 장비에서 촬영한 영상은 FPGA 및 TRNG 기반의 PQC 암호화 모듈을 통해 보호된 후 전송되며, 사용자는 제어 컴퓨터에서 영상을 수신하여 PTZ 기능을 원격 조작할 수 있다. 조작 명령은 블록체인 스마트 컨트랙트를 통해 검증되어 변조 없이 안전하게 실행된다. AI 모듈을 이용하여 이상 행위를 탐지하고 자동 보안 조치를 수행할 수 있도록 하며, 이를 통해 원격 조작의 신뢰성과 보안성을 향상시킨다. 또한, 양자 컴퓨터 공격에 대응하기 위해 PQC 및 대칭키 암호화를 적용하여 보안성을 극대화하였다.

KEY PROVISION SYSTEM, METHOD, AND PROGRAM

Absstract of: US20260246621A1

0000 A key provision system according to the present disclosure includes a first terminal on a master side of key sharing, a first key server capable of providing a shared key to the first terminal, a second terminal on a slave side of the key sharing, and a second key server capable of providing a shared key to the second terminal, wherein the first key server includes: a first key generation unit configured to, when receiving a key request from the first terminal, generate the shared key and second identification information for identifying the shared key by using one or more keys shared with the second key server by one or more key sharing methods and first identification information for identifying each of the one or more keys; a key notification unit configured to transmit a key notification including the shared key and the second identification information to the first terminal; and a first transmission unit configured to transmit the second identification information to the second key server when receiving the second identification information from the first terminal, and the second key server includes: a second key generation unit configured to generate the shared key and the second identification information by using the one or more keys shared with the first key server by the one or more key sharing methods and first identification information for identifying each of the one or more keys; a second transmission unit configured to transmit the second identification

PQC TRNG FPGA Secure communication system for unmanned vehicles including PQC and TRNG-based FPGA and core processor encryption module

Absstract of: KR20260125218A

0001a 본 발명은 무인이동체(UAV, UGV, USV, 드론, 로봇 등)의 보안 강화를 위한 암호화 모듈 및 보안 통신 시스템에 관한 것이다. 특히, 본 발명의 암호화 모듈은 FPGA 및 코어 프로세서를 포함하며, QRNG(양자 난수 발생기), TRNG(하드웨어 난수 발생기), PRNG(소프트웨어 난수 발생기) 를 선택적으로 활용하여 보안 키를 생성할 수 있다.본 발명의 암호화 모듈은 양자내성암호(PQC) 및 대칭키 암호(AES-256, ARIA-256, HMAC 등)를 수행하며, FPGA를 활용한 하드웨어 가속을 통해 암호 연산 성능을 향상시킨다.본 발명의 암호화 모듈은 무인이동체 내부 네트워크 인터페이스와 연결되며, PQC 기반 키 검증 프로토콜을 이용하여 외부와의 안전한 보안 통신을 수행할 수 있다.

AI FPGA AI-based Threat Detection and Blockchain Smart Contract-enabled FPGA Post-Quantum Cryptography Security Communication System

Absstract of: KR20260126063A

본 발명은 무인이동체 간 보안성이 요구되는 환경에서 AI 기반 위협 탐지 및 블록체인 스마트 컨트랙트를 활용한 보안 통신 시스템을 제공한다. FPGA 기반 암호 연산 모듈과 TRNG(True Random Number Generator) 및 QRNG(Quantum Random Number Generator)를 이용하여 양자내성암호(PQC) 기반의 보안 키를 생성하고, 이를 블록체인을 통해 안전하게 관리한다. 또한, AI 기반 위협 탐지 기능을 활용하여 실시간 네트워크 이상 징후를 감지하고, 블록체인 기술을 적용하여 데이터 무결성과 인증을 보장한다. 본 발명은 다중 네트워크(5G, 위성통신, LoRa) 환경에서 안정적인 통신을 지원하며, AI 모델 업데이트 모듈을 통해 지속적으로 보안성을 강화할 수 있도록 한다. 이를 통해 기존 중앙집중형 보안 방식의 한계를 극복하고, 자율 네트워크 관리 및 보안성이 강화된 무인이동체 시스템을 구현할 수 있다.

QUANTUM KEY DISTRIBUTION METHOD AND DEVICE

Absstract of: WO2026173143A1

Disclosed are a quantum key distribution method and apparatus capable of being used in an Internet of things system and the like. The disclosed quantum key distribution method comprises the steps of: selecting one from among a plurality of quantum key distribution protocols; generating a quantum key by using the selected quantum key distribution protocol; and transmitting the quantum key through a quantum channel.

SECURE TRANSMISSION

Absstract of: US20260238680A1

A method of monitoring a transmission includes obtaining one or more values of bit error rate (BER) of the transmission received at a receiver; and determining that the transmission has been intercepted based on a deviation of the obtained bit error rate value from an expected bit error rate value.

METHOD AND APPARATUS FOR HANDLING SECONDARY NODE OPERATIONS IN MULTI-RAT DUAL CONNECTIVITY

Absstract of: US20260239122A1

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). The method includes receiving at least one User Equipment (UE) capability information from at least one UE, wherein the at least one UE capability information comprises a Post Quantum Cryptography (PQC) information, transmitting an SN addition request message to at least one SN with the PQC information, based on the at least one UE capability information, receiving an SN addition request acknowledge message from the at least one SN, if PQC is supported between the at least one UE and the at least one SN, and receiving an SN addition request reject message from the at least one SN, if PQC is not supported between the at least one UE and the at least one SN.

METHOD AND SYSTEM FOR FACILITATING POST QUANTUM SECURE PRIMARY AUTHENTICATION OF A SUBSCRIBER

Absstract of: US20260239002A1

0000 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). The present disclosure relates to a method and system for facilitating post quantum secure primary authentication of a subscriber. The method by an UE discloses applying a quantum safe cryptographic technique on a quantum based public key associated with a home network, generating an encrypted quantum safe shared key based on the applied quantum safe cryptographic technique, transmitting the encrypted quantum safe shared key along with cipher-text value and MAC-tag value associated with the subscriber to a network entity for authenticating the subscriber.

PHOTON DETECTOR, QUANTUM CRYPTOGRAPHY SYSTEM, AND CIRCUIT

Absstract of: US20260238466A1

There is provided a photon detector including an avalanche photodiode, a bias voltage application circuit that applies a bias voltage to an input of the avalanche photodiode, a gate voltage application circuit that applies a gate voltage for superimposing an alternating-current component on the bias voltage, a filter disposed on an output side of the avalanche photodiode, and an impedance adjustment circuit disposed between the avalanche photodiode and the filter.

METHODS, DEVICES, AND SYSTEMS FOR EFFICIENT MULTINOMIAL DISTRIBUTION SAMPLING

Absstract of: WO2026167080A1

Methods and systems for efficient sampling from probability distributions using flexible transformation approaches. The invention encompasses multiple transformation techniques, including but not limited to reparametrization methods and various distribution families, implemented through configurable hardware and software architectures, providing robust solutions for sampling challenges across different computational environments. The method is particularly suitable for hardware-accelerated implementations, allowing scalable and low- latency sampling. Applications span from stochastic process simulation to optimization in machine learning algorithms, inference tasks, and quantum communication systems including Quantum Key Distribution protocols requiring entropy-efficient, cryptographically secure sampling operations.

Method and apparatus for generating random numbers for encryption and decryption of data transmitted and received by digital walkie-talkie using quantum random numbers

Absstract of: KR20260123177A

0001a 본 발명에 따른 디지털 무전기의 송수신 데이터 암복호화를 위한 난수 생성 방법은, 양자난수생성기로 양자난수를 생성하는 단계; 상기 양자난수의 난수성을 검증하는 단계; 및 상기 양자난수의 난수성이 검증되면, 난수발생기로, 상기 양자난수를 잡음원으로 사용하여 난수를 생성하는 단계를 포함하는 것을 특징으로 한다.

Systems and Methods for a Quantum Safe Certificate Ledger

Absstract of: US20260238465A1

0000 A quantum safe blockchain system can operate with quantum safe blockchain nodes (QSBN) and validators. A QSBN can generate a pending register certificate transaction comprising a public key, a fingerprint for a certificate, a URL for the certificate, a first registration number for a parent certificate of the certificate, and a digital signature. The QSBN can transmit the pending register certificate transaction to the quantum safe blockchain system. A validator can receive the pending transaction, validate the digital signature using the public key and include a confirmed register certificate transaction in a block. The confirmed transaction can include a second registration number for the certificate. The QSBN can receive the confirmed transaction and store in a database the fingerprint, the first registration number, and the second registration number. The QSBN can generate a pending certificate revocation transaction for the certificate, and transmit the pending transaction to the blockchain system.

RECEPTION DEVICE, QUANTUM CRYPTOGRAPHY SYSTEM, INFORMATION RECONCILIATION METHOD, AND COMPUTER-READABLE MEDIUM

Absstract of: US20260238470A1

0000 A reception device comprises: a quantum communication unit that receives key information, including information from which a shift key is derived; a random number generation unit that generates a random number in which a portion of the key information is compressed on the basis of a characteristic value of noise in the reception of the key information; and an error correction unit that performs information reconciliation on the basis of the random number.

QUANTUM COMMUNICATION SYSTEM USING CORRECTION OF THE POLARIZATION OF PHOTONS

Absstract of: US20260238350A1

0000 A receiver is provided for receiving a multiplexed signal and an optical signal that are transmitted independently through a transmission channel, the multiplexed signal including a first quantum signal (Q) and at least one polarization state control signal, the optical signal including a second quantum signal (Q), the receiver having a processing chain and a correlation module associated with a polarization base of at least one polarization state, the chain being designed to determine the polarization state of the control signal and to modify the polarization of the multiplexed signal so as to align the determined state with the state of the base, the module being configured to carry out a correlation measurement between the first and second quantum signals and to generate, based on the measurement, at least one information signal regarding the entanglement state of the first and second quantum signals.

SYSTEM FOR DISTRIBUTING QUANTUM KEYS USING CORRECTION OF THE POLARIZATION OF PHOTONS

Absstract of: US20260238352A1

0000 A transmitter of a multiplexed signal through a transmission channel includes a generator of an initial quantum signal, of a first reference signal and of a second reference signal, an encoder having N optical channels including a selector for passing the initial signal to one of the channels, and a recombiner for generating the multiplexed signal, the multiplexed signal including first and second signals (R<11>, R<12>) for controlling first and second polarization-encoding values (P<1>, P<2>), respectively, and a quantum signal, determined based on the initial signal, encoded with an encoding value. The optical channels include two channels each including a unit for integrating a reference signal into the channel, each control signal being determined based on one of the reference signals delivered by the channel in question to the recombiner.

MULTIMODAL MEMORY INTEGRATED CIRCUIT WITH NATIVE-SPEED ENCRYPTED DATA PROCESSING AND GRACEFUL CRYPTOGRAPHIC DEGRADATION ARCHITECTURE FOR USE IN UNBREAKABLE CRYPTOGRAPHY

Absstract of: US20260238459A1

A method of native-speed encrypted data processing with graceful cryptographic degradation architecture for use in cryptography includes the following steps: in a first cryptographic mode, storing key bits from key data on a memory, the memory positioned on a chip substrate of a chip, wherein the chip is free from physical infrastructure to access the key bits externally from the chip, thereby preventing unauthorized access of the key bits; processing the key data with at least one processing device positioned on the chip substrate; and when a quantity of unused key bits from the key bits is below at least one threshold, using a second cryptographic mode to prevent unauthorized access of the key bits.

FIRST PRIVATE KEY VERIFICATION METHOD, TERMINAL DEVICE, SYSTEM, COMPUTER PROGRAM, AND COMPUTER-READABLE STORAGE MEDIUM

Absstract of: EP4790945A1

0001 Es wird ein Verfahren zur Verifizierung eines ersten privaten Schlüssels angegeben, der mittels Quantenschlüsselverteilung erzeugt ist, umfassend ein Bereitstellen des ersten privaten Schlüssels an eine Endbenutzerapplikation (2) von einer Benutzerapplikation (4) einer ersten Vorrichtung (5) über eine lokale Verbindung (8), ein Senden einer ersten Identifikationsinformation von der Endbenutzerapplikation (2) oder der Benutzerapplikation (4) an eine Zwischeninstanz (6), wobei die erste Identifikationsinformation charakteristisch für den ersten privaten Schlüssel ist, ein Empfangen einer Verifizierungsantwort von der Endbenutzerapplikation (2) oder der Benutzerapplikation (4) von der Zwischeninstanz (6), wobei die Verifizierungsantwort charakteristisch ist für einen Abgleich der ersten Identifikationsinformation und einer zweiten Identifikationsinformation, wobei die zweite Identifikationsinformation charakteristisch ist für den zweiten privaten Schlüssel, der auf einer zweiten Vorrichtung (7) hinterlegt ist, und ein Verifizieren des ersten privaten Schlüssels von der Endbenutzerapplikation (2) oder der Benutzerapplikation (4) in Abhängigkeit der Verifizierungsantwort. 0002 Des Weiteren werden eine Endvorrichtung, ein System, ein Computerprogramm und ein computerlesbares Speichermedium angegeben.

QUANTUM CRYPTOGRAPHY IN AN INTERNET KEY EXCHANGE PROCEDURE

Absstract of: EP4790952A2

In some implementations, a first network device may communicate, with a second network device, one or more internet key exchange (IKE) messages to exchange a first identifier associated with the first network device and a second identifier associated with the second network device, and to indicate that a post-quantum preshared key (PPK) is to be used as a shared key for an IKE security association (SA) between the first network device and the second network device. The first network device may obtain, from a key management entity (KME), a quantum key based on providing the second identifier to the KME, wherein the PPK is based on the quantum key. The first network device may communicate, with the second network device, one or more IKE authentication messages to exchange a third identifier associated with the quantum key and to confirm that the second network device successfully obtained the PPK.

위임 양자 계산의 프라이버시를 강화하기 위한 방법 및 이러한 방법을 구현하기 위한 시스템

Nº publicación: KR20260121084A 10/08/2026

Applicant:

콴델라

Absstract of: EP4472127A1

0001 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.