31 results about "Quantum signature" patented technology

The invention discloses an identity-based post-quantum encryption and decryption method, system, equipment and medium, which belong to the field of cryptography. The method includes: the key generation center uses the identity-based post-quantum private key generation algorithm to generate the sender's private key and Receiver's private key; the sender uses the identity-based post-quantum signature algorithm to sign the plaintext of the message with the sender's private key, concatenates, compresses and encrypts the signed data and the plaintext of the message in sequence, and uses the receiver's ID to encrypt the session key. Identity-based post-quantum encryption, and send the encrypted data and encrypted session key to the receiver; the receiver uses the receiver's private key to perform identity-based post-quantum decryption on the encrypted session key, symmetrically decrypt the encrypted data, and decrypt the decrypted The data is decompressed and separated to obtain the message plaintext and signature data, and the identity-based post-quantum verification is performed using the sender ID. Improve message encryption security.

The invention discloses an arbitration quantum signature method based on quantum wandering stealth transmission, which comprisesan initialization phase for preparing a key and setting a system, a signature phase for constructing a signature of a transmission message, and a verification phase for verifying the validity of the signature, authenticity of the message source, and integrity of the message.The method of the invention adopts the stealth teleportation based on the quantum wandering to transmit the d-dimensional quantum state, and the entanglement source used for the stealth transmission does not need to be prepared in advance, thus saving the overhead of preparing the entangled state specially; Moreover, it is more efficient to measure with two projections of d elements. At the same time, the introduction of random parameters prevents the verifier from obtaining the content of the transmitted information and denying the signer's signature before accepting the signed information. In addition, the public board is used to publish the random parameters, and the verifier can obtain the information content of the signature after the verification is completed. Finally, the methodof the invention has the characteristics of saving resources, high measuring efficiency, easy realization of the laboratory and high signature security.

The invention discloses an arbitration quantum signature design method based on Grover iterative and flexible tracking. The design uses a Grover search algorithm to realize that when a signature dispute occurs, the arbitration management party can find the signer of the problematic signature. During the arbitration process, the arbitration management system negotiates with each signature participant to obtain the final key, find the signer of the problem signature, and avoid the direct "public" mechanism of the arbitration group signature. The present invention is characterized in that a complete arbitration signature verification system is established, and the arbitration management system can choose whether to disclose the identity of the signature signer of the problem, which has flexible traceability and fairness.

The invention discloses a quantum computing-resistant signing method based on a public key pool, and a signing system, wherein the signing method includes: the signing direction seal server requests to obtain an encrypted seal public key; The party uses the electronic seal to sign the document to generate a document with the electronic signature; the electronic signature includes at least the seal signature generated by the public key of the seal, and the anti-quantum signature containing the encrypted public key of the seal Calculate the public key; when verifying the seal, the seal verification direction seal server requests to obtain the public key key for the seal public key extracted from the anti-quantum computing public key, and uses the extracted seal public key to verify the seal signature.

This application relates to the field of key generation technology, and provides a hardware acceleration architecture and method for key generation based on post-hashed quantum signatures. The hardware acceleration architecture for key generation is based on the characteristics of algorithms and parameter sets in the LMS key generation process. A high-speed and scalable hardware-accelerated architecture is designed. The architecture is designed to be applicable to all parameter sets of the LMS solution, and through moderate parallel design, low latency and high hardware utilization can be achieved at the same time. At the same time, the architecture maintains a certain constant power when different parameters are implemented, which can be To a certain extent, it helps defend against power attacks.