7 results about "Quantum digital signature" patented technology

Training an artificial intelligence model to categorize data by sensitivity and for applying the model to selectively protect sensitive portions of multimodal datasets. Sensitive training data can be obfuscated with synthetic noise or randomized errors to preserve confidentiality while enabling the model to learn patterns correlated with sensitivity. The trained model is validated on labeled data and can be refined as classification standards evolve. In operation, the classifier assigns sensitivity levels to data elements and directs tiered protection. Elements assigned to a higher relative sensitivity classification level are protected using post-quantum key establishment, for example a key encapsulation mechanism, combined with symmetric authenticated encryption of payloads, and associated metadata is authenticated using a post-quantum digital signature scheme. Less sensitive elements can be protected using conventional symmetric encryption for efficiency. This approach automates sensitivity classification, optimizes cryptographic resource allocation, and improves confidentiality and integrity for simulation and mission data.

The present application relates to an identity authentication method and system. The method comprises: a claimant determining an asymmetric digital signature algorithm and a post-quantum digital signature algorithm; generating an algorithm identifier corresponding to the asymmetric digital signature algorithm and the post-quantum digital signature algorithm; acquiring a time-varying parameter, and generating signature data on the basis of the time-varying parameter and an identifier of a verifier; using the asymmetric digital signature algorithm to perform signing on the signature data, so as to obtain a first signature; using the post-quantum digital signature algorithm to perform signing on the signature data, so as to obtain a second signature; on the basis of the algorithm identifier, the signature data, the first signature and the second signature, generating an identity authentication string; and sending the identity authentication string to the verifier, so as to instruct the verifier to perform identity authentication on the basis of the authentication string. On the basis of conventional asymmetric cryptographic identity authentication, the method introduces a post-quantum digital signature algorithm capable of resisting quantum computation, thereby enhancing the security of two communicating parties during identity authentication and being able to resist quantum threats to a certain extent.

This invention relates to the field of quantum-resistant computing and cryptography, and discloses a hardware-accelerated parallel implementation method and system for quantum-resistant digital signature algorithms. The method includes: mapping a private key matrix to the conductance states of a resistive-switched non-volatile memory array; converting the message to be signed into an input vector and loading it into a row-driven circuit; performing matrix-vector multiplication in situ using the memory array, with the operational current obtained by a column-sensing circuit; performing analog-to-digital conversion, post-processing, and rejection sampling judgment on the current, and outputting the signature result. The system includes a central control module, a resistive-switched memory computing core array, a row-driven circuit module, a column-sensing and conversion module, and a post-processing operator cluster. By adopting the above technical solution, this invention can achieve high-performance, low-power, and low-latency parallel processing of quantum-resistant digital signatures, improving throughput and enhancing deployment feasibility in edge and mobile devices.

This invention discloses an ultra-high-speed post-quantum cryptographic secure communication method for on-orbit intelligent agents, belonging to the field of communication technology. The method includes: generating an encryption key pair based on a post-quantum cryptographic algorithm and a signature key pair based on a quantum-resistant digital signature algorithm for each on-orbit intelligent agent node; recording the two public key information in a blockchain ledger through consensus; obtaining the receiver's public key information from the blockchain ledger, generating a session seed using a post-quantum key encapsulation method and encapsulating it into ciphertext, digitally signing the ciphertext-containing information using a quantum-resistant signature private key, and then sending it; upon receiving the information, the receiver verifies the signature, confirms the identity's legitimacy, and decrypts to obtain the session seed; based on the session seed, both communicating parties generate a one-time session key and transmit business data with symmetric encryption; after communication ends, a communication audit log is generated based on the transmitted information. This invention improves the security of on-orbit intelligent agent communication using the above method.

Training an artificial intelligence model to categorize data by sensitivity and for applying the model to selectively protect sensitive portions of multimodal datasets. Sensitive training data can be obfuscated with synthetic noise or randomized errors to preserve confidentiality while enabling the model to learn patterns correlated with sensitivity. The trained model is validated on labeled data and can be refined as classification standards evolve. In operation, the classifier assigns sensitivity levels to data elements and directs tiered protection. Elements assigned to a higher relative sensitivity classification level are protected using post-quantum key establishment, for example a key encapsulation mechanism, combined with symmetric authenticated encryption of payloads, and associated metadata is authenticated using a post-quantum digital signature scheme. Less sensitive elements can be protected using conventional symmetric encryption for efficiency. This approach automates sensitivity classification, optimizes cryptographic resource allocation, and improves confidentiality and integrity for simulation and mission data.

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.