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QUANTUM DATA COMMUNICATION NETWORKS, HUBS AND CLIENT DEVICES

Absstract of: 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.

Verfahren und System zur Simulation von Quantenkommunikationsvorgängen

Absstract of: 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

Absstract of: 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.

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

Absstract of: 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.

MEASURES OUTPUT METHOD, MEASURES OUTPUT DEVICE, AND RECORDING MEDIUM

Absstract of: 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.

Hardware-Anchored DAO Governance Engine with Quantum-Resistant Attestation

Absstract of: 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.

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

Absstract of: 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.

SYSTEMS AND METHODS FOR QUANTUM KEY DISTRIBUTION NETWORKS

Absstract of: 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.

QUANTUM DERIVED UNIQUE KEY PER TRANSACTION

Absstract of: 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.

Multi-Tile CASCADE Fabric for Scalable Column-Oriented Neural-Network Inference

Absstract of: US20260203565A1

0000 A multi-tile CASCADE fabric for large-scale neural-network inference is disclosed. Multiple CASCADE tiles, each implementing a column-oriented compute array, perform local accumulation of partial sums within columns and output only completed column sums. The tiles communicate through an inter-tile network that transfers completed results rather than intermediate partial sums, greatly reducing bandwidth and enabling near-linear scaling of throughput. Activation values are broadcast synchronously to all tiles, and a hierarchical aggregation structure combines completed column sums into final layer outputs. The architecture maintains the CASCADE principle of column-confined accumulation across tiles, chips, and racks while minimizing power and communication overhead.

QUANTUM ENCRYPTION

Absstract of: 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

Absstract of: 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

Absstract of: 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).

QUANTUM SECURITY METHOD AND QUANTUM SECURITY SYSTEM

Absstract of: 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.

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

Absstract of: 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.

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

Absstract of: 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.

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

Absstract of: 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.

System and method for quantum-based data encryption and transmission

Absstract of: 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.

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

Absstract of: 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

Absstract of: 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.

SYSTEMS AND METHODS FOR PRACTICAL QUANTUM POSITION-BASED KEY EXCHANGE

Absstract of: 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.

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

Absstract of: 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.

SYSTEM AND METHOD FOR TRUSTLESS KEY PROVISIONING

Absstract of: 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.

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

Absstract of: 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.

Method and System for determining a cryptographic key

Nº publicación: US20260189374A1 02/07/2026

Applicant:

MULTIVERSE COMPUTING S L [ES]
Multiverse Computing S.L.

Absstract of: 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.