Alerta

중재자 기반 양자 서명 기법에서 양자 정보 전송량 및 자원 사용량 최소화하기 위한 장치 및 방법

Absstract of: WO2025146833A1

According to various embodiments of the present disclosure, an operation method for a second node in a communication system is provided, the method comprising the steps of: receiving, from a first node, a first quantum message and a second quantum signature based on the first quantum message, signature information related to the first quantum message being divided into a first quantum signature and the second quantum signature, and the first quantum signature being transmitted from the first node to a third node; using a secret symmetric key shared with the third node so as to transmit, to the third node, a first message encrypted on the basis of the second quantum signature and the first quantum message; receiving a second message based on the first quantum signature, the second quantum signature and the first quantum message from the third node; and determining, on the basis of the second message, whether the first quantum message has been forged.

SYSTEM AND METHOD FOR HUMAN IDENTITY-BOUND CRYPTOGRAPHIC SIGNING OF DIGITAL COMMUNICATIONS

Absstract of: US20260261431A1

0000 A system (100) for authenticating digital communications comprises a sender layer (102) and a receiver layer (104). The sender layer (102) comprises a signing layer (110) configured to intercept outbound communications from a verified human identity prior to transmission, wherein the verified human identity is registered to a public identity record (109), an identity anchor (108) binding a signing key to the verified human identity, and a verification artifact generated by the signing layer (110), the verification artifact encoding the identity anchor (108) of the verified human identity. The receiver layer (104) comprises a public verification protocol (114) enabling a receiving system to receive the outbound communications and validate the verification artifact against the public identity record (109) to confirm authenticity of the outbound communications.

USER IDENTITY INFORMATION PROTECTION METHOD AND APPARATUS, AND RELATED DEVICE

Absstract of: WO2026179321A1

The present disclosure relates to the technical field of communications, and provides a user identity information protection method and apparatus, and a related device. The method comprises: in response to an identity registration request of a terminal, selecting a target protection strategy from among a plurality of information protection strategies, wherein the target protection strategy uses a key agreement algorithm and/or a quantum key algorithm to generate a shared key between the terminal and a network side; generating a first shared key on the basis of the target protection strategy, and using the first shared key to encrypt plaintext user identity information of the terminal to obtain encrypted user identity information; and sending the encrypted user identity information, an identifier of the target protection strategy, and corresponding parameters to the network side, so that the network side generates a second shared key on the basis of the identifier of the target protection strategy and the corresponding parameters, and uses the second shared key to decrypt the encrypted user identity information to obtain the plaintext user identity information. The present disclosure can not only effectively avoid the security risk brought by quantum computing, but also solve the problem of insufficient quantum keys.

METHOD FOR SINGLE-PHOTON PAIR-BASED ONE-WAY AND ONE-STEP QUANTUM DIRECT COMMUNICATION, AND DEVICE THEREFOR

Absstract of: US20260261410A1

The present disclosure provides a method for a transmitting terminal to transmit information on a quantum channel in a quantum communication system. More specifically, the method comprises generating a single photon pair related to a polarization coding for transmission of the information; generating a transmission information sequence including (i) a message sequence related to the information and (ii) a checking sequence related to a quantum bit error rate (QBER) estimation for determining whether there is eavesdropping on a quantum channel, the checking sequence being randomly inserted between sequence elements of the message sequence; performing either (i) an encryption or (ii) a scrambling on the information sequence; transmitting, to a receiving terminal, quantum information generated based on the polarization coding for the information sequence, to which either (i) the encryption or (ii) the scrambling is applied, on the quantum channel; performing the QBER estimation with the receiving terminal; and transmitting, to the receiving terminal, information for restoring the information sequence, to which either (i) the encryption or (ii) the scrambling is applied, based on a result of the QBER estimation.

SYSTEMS AND METHODS OF FACILITATING AUTOMATED REGULATORY COMPLIANCE DETERMINATION

Absstract of: US20260260199A1

0000 The present disclosure provides a method of facilitating automated regulatory compliance determination. Further, the method may include receiving, using a communication device, a compliance input data from a regulatory data source. Further, the method may include receiving, using the communication device, an operational input data from an enterprise system. Further, the method may include determining, using a processing device, a compliance status data by processing the compliance input data and the operational input data using a quantum-inspired neural network. Further, the method may include generating, using the processing device, a compliance output data based on the compliance status data. Further, the method may include storing, using a storage device, the compliance output data. Further, the method may include transmitting, using the communication device, the compliance output data to a client system.

GENERATION OF VERIFIABLE PRIVATE RANDOMNESS USING DISTRIBUTION OF QUANTUM ENTANGLEMENT

Absstract of: US20250131317A1

A system and method for providing quantum entanglement-as-a-service and simultaneously producing verifiably random sequences of numbers are described. When distributing quantum entanglement between customers Alice and Bob, Alice and Bob may exchange information pertaining to a measurement basis that they respectively used when performing measurements using respective halves of entangled particles. When customer Alice, for example, determines that both Alice and Bob have performed a given measurement in a same measurement basis, said result may be used in a quantum key distribution (QKD) code. When customer Alice determines that they have not performed the given measurement in the same measurement basis, Alice may concatenate said portion of the results into a private and verifiable sequence of random numbers. Providing distributed quantum entanglement therefore results in both a QKD code between said customers and in respective private and verifiably random sequences of numbers.

TECHNIQUES FOR DETERMINING CRYPTOGRAPHIC KEY BANDWIDTH SHARES IN A MULTI-USER SCENARIO BY MEANS OF AN OPTIMIZATION

Absstract of: EP4800967A1

The disclosure relates to a method and a communication system for establishing a plurality of secret cryptographic keys shared between a sending unit and a plurality of receiving units, wherein the sending unit is connected to the plurality of receiving units by a plurality of communication channels. The method comprises transmitting, at the sending unit, a first sequence of electromagnetic signal pulses to a first receiving unit among the plurality of receiving units via a first communication channel among the plurality of communication channels for establishing a first cryptographic key shared between the sending unit and the first receiving unit, wherein each electromagnetic signal pulse of the first sequence of electromagnetic signal pulses corresponds to a bit of a first random bit sequence according to a key distribution protocol. The method further comprises transmitting, at the sending unit, a second sequence of electromagnetic signal pulses to a second receiving unit among the plurality of receiving units via a second communication channel among the plurality of communication channels for establishing a second cryptographic key shared between the sending unit and the second receiving unit, wherein each electromagnetic signal pulse of the second sequence of electromagnetic signal pulses corresponds to a bit of a second random bit sequence according to the key distribution protocol. The method further comprises determining a first key bandwidth share for the first sequ

IMPROVED QKD NETWORK

Absstract of: WO2025087609A1

There is herein described a method of performing Quantum Key Distribution (QKD), the method comprising generating a first quantum key by performing QKD between a first quantum transmitter at a first quantum node and a quantum receiver at a second quantum node, generating a second quantum key by performing QKD between the quantum receiver at the second quantum node and a second quantum transmitter at a third quantum node, encrypting data using the second quantum key, transmitting the encrypted data from the second quantum node to the third quantum node, wherein the data comprises, the first quantum key; and/or data received at the second quantum node from the first quantum node.

ESTABLISHING A PLURALITY OF SECRET CRYPTOGRAPHIC KEYS SHARED BETWEEN A SENDING UNIT AND A PLURALITY OF RECEIVING UNITS

Absstract of: EP4800968A1

The disclosure relates to a method for establishing a plurality of secret cryptographic keys shared between a sending unit and a plurality of receiving units, wherein the sending unit is connected to the plurality of receiving units by a plurality of communication channels. The method comprises transmitting, at the sending unit, at least one first electromagnetic test pulse to a first receiving unit among the plurality of receiving units via a first communication channel among the plurality of communication channels, and determining a first signal loss in the first communication channel based on the at least one first electromagnetic test pulse detected at the first receiving unit. The method further comprises transmitting, at the sending unit, a first sequence of electromagnetic signal pulses to the first receiving unit via the first communication channel for establishing a first cryptographic key shared between the sending unit and the first receiving unit, wherein each electromagnetic signal pulse of the first sequence of electromagnetic signal pulses corresponds to a bit of a random bit sequence according to a key distribution protocol. The method further comprises transmitting, at the sending unit, at least one second electromagnetic test pulse to a second receiving unit among the plurality of receiving units via a second communication channel among the plurality of communication channels, and determining a second signal loss in the second communication channel based on

METHOD OF MONITORING AN ENCRYPTED MESSAGE

Absstract of: EP4800972A1

0001 A method of monitoring an encrypted message received by a computing device using an application is provided. The method comprises the computing device receiving an encrypted message comprising cryptographic handshake data. The application determines a cryptographic algorithm of the encrypted message based on the cryptographic handshake data. The application determines whether the encrypted message is quantum-secure based on the determined cryptographic algorithm. The application generates an indication on the computing device that the encrypted message is quantum secure or an indication on the computing device that the encrypted message is not quantum secure.

RECEIVER MODULE FOR USE IN CONTINUOUS-VARIABLE QUANTUM KEY DISTRIBUTION

Absstract of: EP4800970A1

0001 The present invention relates to a receiver module for use in continuous-variable quantum key distribution, the receiver module comprising: a symmetric 3x3 optical coupler having three input ports and three output ports; a quantum channel for providing a quantum signal to the symmetric 3x3 optical coupler; an optical switch means arranged between the quantum channel and a first input port of the symmetric 3x3 optical coupler and configured to block or attenuate the quantum signal; a first single-ended photodetector and a second single-ended photodetector; and a signal processing unit configured to process the outputs of the single-ended photodetectors, wherein the first single-ended photodetector is coupled to a first output port of the symmetric 3x3 optical coupler and the second single-ended photodetector is coupled to a second output port of the symmetric 3x3 optical coupler.

一种光芯片加密通讯模块

Absstract of: CN122660868A

0001 本发明公开了一种光芯片加密通讯模块，涉及量子加密通信技术领域，该方法包括：现场可编程逻辑门阵列、微处理器、光芯片、存储器和高速模数/数模转换器芯片；所述现场可编程逻辑门阵列分别与所述存储器、光芯片、高速模数/数模转换器芯片和微处理器建立通信连接，且所述现场可编程逻辑门阵列、微处理器、光芯片、存储器、高速模数/数模转换器芯片和无源阻容器件集成为一体；所述光芯片内置量子真随机数发生器，通过量子物理现象生成不可预测的真随机数，并基于所述真随机数生成加密密钥，有助于解决现有技术无法实现小型化集成且高安全等级光芯片加密通讯的问题。

基于量子密钥种子的数据传输方法、通信系统及存储介质

Absstract of: CN122660874A

本申请涉及一种基于量子密钥种子的数据传输方法、通信系统及存储介质，所述方法包括：将原始数据流切分为数据帧，对每个数据帧进行喷泉码编码生成编码符号流，生成真随机的量子密钥种子，以量子密钥种子为输入通过加密安全伪随机数生成器生成跳时控制序列，按照跳时控制序列将所述编码符号流发送至接收端，由接收端根据喷泉码编码、量子密钥种子及从编码符号流恢复出原始数据流的数据帧；该技术方案，避免了量子密钥速率与数据速率的“剪刀差”缺陷，满足实时通信需求，并且量子密钥种子驱动的跳时图案生成，使得安全性同时建立在量子随机性和时间不确定性两个维度上，提升了数据通信的安全性。

认证方法、装置、车辆、程序产品和存储介质

Absstract of: CN122660989A

本公开提供一种认证方法、装置、车辆、程序产品和存储介质，涉及信息安全技术领域，能够提升认证的安全性。该方法包括：第一通信装置接收第一假名和第一私钥，并在第一假名和第一私钥认证通过的情况下，根据第一量子随机数和第一私钥生成第二私钥。其中，第一假名是根据第一通信装置的标识信息生成的，第一私钥是根据第一假名生成的，第二私钥为第一通信装置的私钥。

一种深空大时延弱反馈场景下诱骗态安全快速校验方法及装置

Absstract of: CN122660872A

0001 本申请公开一种深空大时延弱反馈场景下的诱骗态安全快速校验方法及装置，属于深空量子保密通信领域。该方法在接收端设置长短两级滑动窗口进行帧级增量统计，短窗捕捉瞬时异常并触发预警、提频监测，长窗结合同步采集的环境参数进行扰动区分，排除环境因素后确认攻击并终止密钥分发。方案将安全响应的快速性落实在接收端本地自主决策，克服深空往返时延的限制，同时采用批量打包校验模式提升天地交互效率，可有效降低深空环境下诱骗态校验的虚警率，提升响应速度。

抗量子联邦学习框架及训练安全处理方法

Absstract of: CN122660870A

本发明涉及分布式机器学习和网络安全技术领域，具体涉及一种抗量子联邦学习框架及训练安全处理方法，所述抗量子联邦学习框架，包括：至少一个服务器和与各服务器对应的至少一个客户端；以及分别部署于各服务器和各客户端的联邦训练调度模块、后量子密钥封装模块、后量子数字签名算法模块、对称加密保护模块和安全校验聚合模块。该框架可通过扩展Flower的gRPC传输层集成后量子安全通信能力，在不传输原始数据的前提下，提高联邦学习系统在量子计算威胁场景下的消息机密性、消息完整性、身份可认证性以及多轮训练过程的连续性、安全性和可控性，适用于医疗、金融、政务和工业互联网等对通信安全与长期密码强度要求较高的分布式协同建模场景。

Miniaturized Quantum Key Distribution (QKD) Circuits

Absstract of: US20260254539A1

Apparatuses, systems, computing devices, switches, network endpoints, and methods to enable quantum key distribution (QKD). Systems include a QKD circuit to encode one or more photons according to respective quantum states and a quantum transmitter circuit to enable the encoded photons to transmit via an optical communication channel.

Vorrichtungen und Verfahren zur optischen Kommunikation

Absstract of: DE102025107525A1

Ein optischer Kommunikationsknoten umfasst eine Kommunikationseinrichtung zum Austausch eines optischen modulierten Kommunikationssignals, das eine Synchronisierungsinformation aufweist, in einem ersten Zeitintervall und mit einem Kommunikationspartner. Der optische Kommunikationsknoten umfasst eine Schlüsselerzeugungseinrichtung, die ausgebildet ist, um in einem mit der Synchronisierungsinformation korrelierten disjunkten zweiten Zeitintervall basierend auf einem optischen QKD-Signal eine gemeinsame Quantenbitfolge mit dem Kommunikationspartner auszutauschen. Der optische Kommunikationsknoten umfasst ferner eine optische Schnittstelle zum Bereitstellen des optischen modulierten Kommunikationssignals und des optischen QKD-Signals über einen gemeinsamen räumlichen Kanal, um über den gemeinsamen räumlichen Kanal das Kommunikationssignal, das QKD-Signal und die Synchronisierungsinformation mit dem Kommunikationspartner auszutauschen.

SYSTEMS AND METHODS FOR SOLVING TACIT COORDINATION PROBLEMS USING QUANTUM TELEPATHY

Absstract of: WO2026177759A2

Systems and methods for tacit coordination of decisions. In one embodiment, a system includes first and second measurement devices that are each coupled to respective quantum memory devices. A heralded entanglement measurement device photonically connecting the quantum memory devices via respective quantum channels is configured to receive photons emitted from the respective quantum memory devices via the quantum channels and to perform measurements on the photons to determine whether the quantum memory devices are entangled. The heralded entanglement device transmits a heralding signal to the first and second memory devices indicating whether the memory devices have been successfully entangled. If they are successfully entangled, the memory devices are configured to make tacitly coordinated decisions using local information and thereby obtain a quantum advantage. Other embodiments of systems are disclosed as are methods for optimizing and tuning the systems and for using the systems in various applications including high frequency trading, distributed computing, and computer architecture.

JOINT MODULAR MULTIPLICATIVE INVERSE OPERATIONS FOR ACTIVE VOLUME QUANTUM COMPUTING

Absstract of: US20260254625A1

0000 Systems, methods, and quantum circuits for utilizing a joint modular multiplicative inverse operation to perform quantum decryption. First and second private keys are determined by applying first and second series of quantum phase estimation circuits to first and second pluralities of qubits. The private keys are determined further based on public keys and a base point P. The first and second series of quantum phase estimation circuits include application of a joint modular multiplicative inverse circuit on a first qubit of the first plurality of qubits and a second qubit of the second plurality of qubits that calculates a modular multiplicative inverse of a modular product of a first value of the first qubit and a second value of the second qubit. The first and second private keys are stored in a non-transitory computer-readable memory medium.

PQC ADAPTATION FOR 6G AKA PROCEDURE

Absstract of: US20260254645A1

0000 The present disclosure relates to post quantum cryptography (PQC) enhancement of authentication and key agreement (AKA) procedures for use in communication networks. Aspects of the disclosure include use of a pre-shared post quantum key (PPK), or a selected PPK from a list of PPKs, or use of a home network public key (pk) and private key (sk) derived using a post-quantum cryptography (PQC) key generation function, defining PQC-based pk and sk, for authentication procedures between user equipment and a network entity. Aspects of the disclosure further include use of the PQC-based pk and sk for key generation of shared PQC-based keys.

Decision Engine Consistency Verification System

Absstract of: US20260254624A1

0000 Various aspects of the disclosure relate to verification of data sets used for real-time processes and/or batch processes. A computing platform negotiates, by a first quantum node, a shared key group with at least a second quantum node and calculates an exclusive or (XOR) value of a pair of the first quantum node and the second quantum node. The first quantum service node performs a shared key grouping with the second quantum node and then selects a quantum key relay link between a real-time node and a batch source node. The computing platform selects a corresponding state of all virtual quantum nodes associated with the quantum key relay link and encapsulates a virtual quantum link state between any two quantum service nodes in the quantum network into a database decision engine data file.

KEY EXCHANGE SYSTEM, QKD APPARATUS, HUB APPARATUS, METHOD, AND PROGRAM

Absstract of: US20260254623A1

0000 A key exchange system includes: a quantum key distribution (QKD) network including a plurality of QKD apparatuses that performs exchange of a key and a plurality of key management apparatuses that relays the key; and a plurality of hub apparatuses that performs encrypted communication by using the key. One of the QKD apparatuses includes a processor configured to, in a case where the key is transmitted to an unreliable key management apparatus, use a secret key shared in advance with a hub apparatus that receives the key via the unreliable key management apparatus, and transmit the key subjected to an exclusive OR with the secret key to the unreliable key management apparatus. The hub apparatus includes a processor configured to, in a case where the key is received from the unreliable key management apparatus, use the secret key to calculate an exclusive OR of the secret key and the key.

IMPROVEMENTS TO QKD ARRANGEMENTS

Absstract of: US20260254620A1

0000 There is herein disclosed an apparatus for performing quantum key distribution, the apparatus comprising a first quantum terminal, the first quantum terminal being one of a first quantum transmitter/receiver pair, and a second quantum terminal, the second quantum terminal being one of a second quantum transmitter/receiver pair, wherein the first quantum terminal comprises a plurality of connected functional components which, in use, co-operate to perform quantum key distribution with the other of the first quantum transmitter/receiver pair, wherein, in use, one or more of the plurality of connected functional components co-operates with the second quantum terminal to perform quantum key distribution with the other of the second quantum transmitter/receiver pair.

MULTI-AXIS MEASUREMENT PROTOCOL TO PROTECT QUANTUM INFORMATION

Nº publicación: US20260254622A1 27/08/2026

Applicant:

ACCENTURE GLOBAL SOLUTIONS LTD [IE]
ACCENTURE GLOBAL SOLUTIONS LIMITED

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.