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15 results about "Post-quantum cryptography" patented technology
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Post-quantum cryptography (sometimes referred to as quantum-proof, quantum-safe or quantum-resistant) refers to cryptographic algorithms (usually public-key algorithms) that are thought to be secure against an attack by a quantum computer. As of 2019, this is not true for the most popular public-key algorithms, which can be efficiently broken by a sufficiently strong quantum computer. The problem with currently popular algorithms is that their security relies on one of three hard mathematical problems: the integer factorization problem, the discrete logarithm problem or the elliptic-curve discrete logarithm problem. All of these problems can be easily solved on a sufficiently powerful quantum computer running Shor's algorithm. Even though current, publicly known, experimental quantum computers lack processing power to break any real cryptographic algorithm, many cryptographers are designing new algorithms to prepare for a time when quantum computing becomes a threat. This work has gained greater attention from academics and industry through the PQCrypto conference series since 2006 and more recently by several workshops on Quantum Safe Cryptography hosted by the European Telecommunications Standards Institute (ETSI) and the Institute for Quantum Computing.
Pqc adaptation for 6g aka procedure
PendingCN122269277AKey distribution for secure communicationUser identity/authority verificationKey (cryptography)Theoretical computer science
This disclosure relates to enhancements to post-quantum cryptography (PQC) for authentication and key negotiation (AKA) processes used in communication networks, and particularly to a PQC adaptation for 6G AKA processes. Aspects of this disclosure include: the use of a pre-shared post-quantum key (PPK), or a PPK selected from a list of PPKs, or the use of a home network public key (pk) and private key (sk) derived using a post-quantum cryptography (PQC) key generation function, to define PQC-based pk and PQC-based sk for authentication processes between user equipment and network entities. Aspects of this disclosure also include the use of PQC-based pk and PQC-based sk for the generation of shared PQC-based keys.
Owner:NOKIA TECHNOLOGIES OY
Subscription Concealed Identifier (SUCI) Supporting Post-Quantum Cryptography
PendingUS20260149585A1Key distribution for secure communicationPublic key for secure communicationKey (cryptography)Ciphertext
A device and a network can authenticate using a subscription concealed identifier (SUCI). The device can store (i) a plaintext subscription permanent identifier (SUPI) for the device, (ii) a network static public key, and (iii) a key encapsulation mechanism (KEM) for encryption using the network static public key. The network can store (i) a device database with the SUPI, (ii) a network static private key, and (iii) the KEM for decryption using the network static private key. The device can (i) combine a random number with the SUPI as input into the KEM to generate a ciphertext as the SUCI, and (ii) transmit the ciphertext / SUCI to the network. The network can (i) decrypt the ciphertext using the KEM to read the SUPI, (iii) select a key K from the device database using the SUPI, and (iv) conduct an Authentication and Key Agreement (AKA) with the selected key K.
Owner:ADEIA EMERGING TECHNOLOGIES INC
PQC adaptation for 6g AKA procedure
PendingUS20260180803A1Key distribution for secure communicationUser identity/authority verificationKey (cryptography)Theoretical computer science
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.
Owner:NOKIA TECHNOLOGIES OY
Efficient Cryptographic Key Management in Resource Constrained Devices
PendingUS20260180794A1Key distribution for secure communicationMultiple keys/algorithms usageKey sizeKey (cryptography)
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.
Owner:ORACLE INT CORP
A provably secure post-quantum key encapsulation method based on LWR mask noise, computer equipment and storage medium
The present application belongs to the technical field of post-quantum cryptography, and provides a provably secure post-quantum key encapsulation method based on LWR masking noise, a computer device and a storage medium. The method includes three stages, a key generation stage: generating a pair of asymmetric keys for the receiver of communication; an encryption stage: the sender encapsulates the shared secret using the public key of the receiver to form ciphertext; a decryption stage: the receiver uses the private key kept by itself to offset the public part in the ciphertext, and filters out the introduced rounding noise and masking noise, and restores the plaintext message encapsulated by the sender. The present application can realize compact provable security reduction from Module-LWR to Module-LWE without significantly increasing the computing overhead and bandwidth, and at the same time, eliminate the potential side channel leakage caused by the deterministic rounding structure.
Owner:BEIJING LANGKONG QUANTUM TECHNOLOGY CO LTD
Efficient cryptographic key management in resource constrained devices
PCT designated stageWO2026135999A1Key distribution for secure communicationDigital data protectionKey sizeKey (cryptography)
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.
Owner:ORACLE INT CORP
PQC Adaptation for 6G AKA Procedures
PendingCN122269279AKey distribution for secure communicationUser identity/authority verificationKey (cryptography)Theoretical computer science
The present disclosure relates to post-quantum cryptography (PQC) enhancements for authentication and key agreement (AKA) procedures used in communication networks, in particular a PQC adaptation for 6G AKA procedures. Aspects of the present disclosure include: the use of a pre-shared post-quantum key (PPK), or a PPK selected from a list of PPKs, or the use of a post-quantum cryptography (PQC) key generation function to derive a home network public key (pk) and private key (sk) to define a PQC-based pk and a PQC-based sk for an authentication procedure between a user equipment and a network entity. Aspects of the present disclosure also include the use of a PQC-based pk and a PQC-based sk for the generation of a shared PQC-based key.
Owner:NOKIA TECHNOLOGIES OY
Post-quantum cryptography communication method and device
Owner:HUAWEI TECH CO LTD
Certificate-based security using post-quantum cryptography
Secure communication is established by sending a server certificate message, which includes a first certificate associated with a first encryption algorithm and a second certificate associated with a second encryption algorithm, the first and second certificates being bound to each other; a first message associated with client-server communication is signed using a first private key, which is associated with the first certificate; a second message associated with client-server communication is signed using a second private key, which is associated with the second certificate, the second message including the signed first message; and a server certificate verification message is sent, which includes the signed first message and the signed second message.
Owner:INTERNATIONAL BUSINESS MACHINE CORPORATION
PQC adaptation for 6g AKA procedure
PendingUS20260180789A1Key distribution for secure communicationPublic key for secure communicationKey (cryptography)Theoretical computer science
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.
Owner:NOKIA TECHNOLOGIES OY
Pqc adaptation for 6g aka procedure
PendingCN122269278AKey distribution for secure communicationUser identity/authority verificationKey (cryptography)Theoretical computer science
The present disclosure relates to post-quantum cryptography (PQC) enhancements for authentication and key agreement (AKA) procedures used in communication networks, in particular a PQC adaptation for 6G AKA procedures. Aspects of the present disclosure include the use of a pre-shared post-quantum key (PPK), or a PPK selected from a list of PPKs, or the use of a post-quantum cryptography (PQC) key generation function to derive a home network public key (pk) and private key (sk) to define a PQC-based pk and a PQC-based sk for an authentication procedure between a user equipment and a network entity. Aspects of the present disclosure also include the use of a PQC-based pk and a PQC-based sk for the generation of a shared PQC-based key.
Owner:NOKIA TECHNOLOGIES OY
Estimation of efforts in migrating applications to post quantum cryptography (PQC) state
The ability to accurately estimate the Lines of Codes (LoC) needed to complete migration of application has been a challenge over the past decades. Embodiments disclosed herein provide a method and system for estimation of efforts in migrating applications to post quantum cryptography (PQC) state. The system, based on a determined cyclomatic complexity for one or more components present in a refined slicing output and a refined coupling output is estimated. Further, an effort of migration is estimated using the cyclomatic complexity and number of LoC impacted by the one or more cryptographic APIs.
Owner:TATA CONSULTANCY SERVICES LTD
A post-quantum digital signature method based on prime order field
PendingCN122119900AKey distribution for secure communicationUser identity/authority verificationKey (cryptography)Digital signature
The present application belongs to the technical field of post-quantum cryptography, and specifically relates to a high-efficiency post-quantum digital signature method based on a prime-order number field. The present application comprises key generation, signature and verification based on the Fiat-Shamir with Aborts paradigm structure, and the underlying algebraic structure is a prime-order number field with the characteristics of high security, prime order, large Galois group and inert modulus. The high-efficiency prime-order number field polynomial multiplication method comprises a prime-order number field NTT polynomial multiplication method and a prime-order number field small polynomial multiplication method. The high-efficiency branchless constant-time implementation method comprises a branchless modulus reduction method and a branchless high-low decomposition method. The present application can resist cryptographic attacks on cyclotomic rings and has higher robust security. The present application overcomes the defects of poor implementation efficiency of existing cryptographic schemes based on prime-order number fields and realizes lattice signatures with high efficiency and security.
Owner:FUDAN UNIVERSITY
Unified Governance Platform with Cryptographic State Enforcement and Secure Interoperability
The Unified Governance Platform controls how governance states change across both traditional systems (Web2) and blockchain systems (Web3) in a way that can be verified using cryptography. It combines a governance state engine with integration, security, rule-checking, and conflict-resolution modules, all connected through pre-built APIs. The platform uses AI to suggest state changes, but only allows changes that pass checks for regulations, sustainability, and risk. These approved changes are enforced using open-source cryptographic tools, including post-quantum cryptography and simplified zero-knowledge proofs.Every state change is automatically recorded using cryptographic fingerprints to create Evidence of Use logs that support audits and infringement detection. The platform is designed to run in secure cloud environments, making it easy to deploy across decentralized finance applications, enterprise software systems, and autonomous systems without requiring specialized hardware or complex setup.
Owner:BICKERSTAFF III GEORGE WILLIAM
NTT hardware system and control method based on double coefficient folding storage and adaptive scheduling
ActiveCN122119889AKey distribution for secure communicationComplex mathematical operationsParallel computingQuantum codes
The application discloses a kind of NTT hardware system and control method based on double coefficient folding storage and adaptive scheduling, it is related to post quantum cryptography hardware acceleration technical field.Its hardware system includes input layer and bit inversion module, double coefficient folding unit module, single BRAM storage module, adaptive conflict-free scheduling subsystem, rotation factor processing path and BFU butterfly computation unit;Its control method is compressed by double coefficient folding storage to splice logical coefficient, to realize high-bandwidth storage with the theoretical lower limit physical depth single body BRAM, and dynamically switches inner layer and interlayer access mode according to calculation level by adaptive conflict-free scheduling subsystem, eliminates variable step size memory conflict, realizes full-pipeline bubble-free operation.The hardware system of the application significantly reduces the on-chip storage area consumption, improves the calculation throughput and timing convergence, and is suitable for hardware acceleration implementation of post quantum cryptography algorithm.
Owner:NANJING UNIV OF INFORMATION SCI & TECH