30 results about "Quantum authentication" patented technology

A method and apparatus for sharing information. First bits are selected from a shared secret key in a first device. The first bits have a selected length. Second bits with the selected length in signals are sent from the first device to a second device. The signals have selected types of properties based on the first bits. The second bits are encoded in states for the selected types of properties. A key is generated in the first device. The key is based on the second bits received at the second device having the selected types of properties identified as matching expected types of properties.

The invention discloses a novel anti-snooping luminous warning optical PUF. The novel anti-snooping luminous warning optical PUF structurally comprises a substrate, an optical PUF dielectric layer growing on the substrate, a long afterglow luminescent material capable of being embedded in the substrate or the optical PUF dielectric layer, and a non-transparent box for packaging the substrate, the optical PUF dielectric layer and the long afterglow luminescent material therein. According to the novel anti-snooping luminous warning optical PUF, the long afterglow luminescent material added into a conventional optical PUF structure still can continuously emit light for a long time after the material is irradiated through a light source for a short time and the light source is turned off, and the light emitting behavior is utilized as a basis for judging whether the PUF is snooped or not, so that the PUF is endowed with an anti-snooping luminous warning function and the defect that a general optical PUF cannot judge whether excitation-response pairs of the optical PUF are snooped by an enemy or not is overcome; the PUF has the anti-snooping luminous warning function, so that the security of the optical PUF is ensured; and therefore, the novel anti-snooping luminous warning optical PUF has true practicality and can be widely applied to quantum authentication and quantum key distribution.

The invention discloses a ring cavity nano-wire electric injection single-photon source device. The ring cavity nano-wire electric injection single-photon source device is characterized by comprising a p type electrode, a pin nano-wire, a quantum dot embedded into the nano-wire, a multilayer concentric ring cavity, an n type electrode, an n type material and a substrate. The device has the advantages that while electric injection work is achieved, an annular Bragg micro-cavity composed of multilayer concentric rings is utilized, an electromagnetic field is generated at the concentric quantum dot position, and the local area is enhanced; the radiation efficiency of a quantum dot single-photon source can be enhanced through a Purcell effect, divergence of photons can be limited in two spatial dimensions vertical to the nano-wire, the single photons can be emitted only in the nano-wire direction, the single photons are easily coupled with optical fibers, and the light collecting and utilizing efficiency is greatly improved. The ring cavity nano-wire electric injection single-photon-source device can be widely applied to quantum information, quantum computing, quantum authentication and quantum precision measurement relevant fields.

The invention belongs to the technical field of quantum computing and quantum authentication, and relates to a quantum group authentication method based on the Grover algorithm. A private share is used as the identity information of the registered user and sent to the registered user through the classic channel, and a group identifier is generated for the network group and sent to the network group through the classic channel; in the authentication stage, each user participating in the authentication according to his own identity information Carry out unitary transformation to the authentication quantum state with the group identifier, and finally the group returns the authentication quantum state after the unitary transformation to the authentication management center for comparison to obtain the authentication result; the present invention uses the Grover operator, and the Grover operator The usage of the system has been extended, and the group user identity and the network group identifier can be authenticated at the same time, and the double authentication improves the security of the authentication method.

The invention provides a voting protocol method based on a d-dimensional three-quantum entanglement state, and belongs to the technical field of quantum computation and quantum authentication. The voting protocol method comprises the steps that a d-dimensional three-quantum entanglement system is prepared by a voting management center, three quanta are distributed to voting groups, a scrutineer and a vote counting person correspondingly, n private shares and group authentication codes a<0> are prepared simultaneously, the private shares are distributed to n voting group registered authorized persons, t persons with the voting qualification are selected from the voting groups to participate in voting, and the group authentication codes are issued to the scrutineer; the voting groups calculate the private authentication codes of the voting groups, and vote according to the voting intentions and the private authentication codes of the voting groups; after voting is completed, the scrutineer conducts unitary operation on the quanta in the hands through the group authentication codes in the hands, and authenticate safety through measuring; and after authentication is qualified, the votecounting person obtains a voting result. Compared with other protocols, the number of the quanta required to be prepared by the voting protocol method is much less, and thus the efficiency is improved, and the protocol flexibility and universality are enhanced by using any d-dimensional quantum state.

The invention discloses an authentication method, device, and storage medium, wherein the method includes: the authenticated party sends an authentication request to a quantum authentication server, and the quantum authentication server generates a second quantum authentication according to a prestored first shared quantum key after receiving the authentication request. Encrypted information, and send the first encrypted information back to the authenticated party, after the authenticated party decrypts the first encrypted information through the pre-stored first shared quantum key, according to the information decrypted by the first encrypted information and the pre-stored The second shared quantum key generates the second encrypted information, and sends the second encrypted information to the quantum authentication server, and the quantum authentication server decrypts the second encrypted information according to the prestored second shared quantum key and completes the encrypted information based on the decrypted information. Authentication of the authenticating party. In the technical solution disclosed in the present invention, the mutual information is encrypted and decrypted through the pre-stored shared quantum key, thereby significantly improving the security of information mutual exchange.

The invention provides a mobile phone token identity authentication system based on a quantum cipher network. A mobile terminal and an application server register a quantum authentication center through a quantum cipher network terminal, an ID, an IMEI code or a domain name is provided in registration, and PIN codes are set. The mobile terminal and the application server download a quantum key at the quantum cipher network terminal, and the database of the quantum authentication center stores downloaded quantum key data. A mobile terminal user provides an ID of the mobile terminal user when the application server registers. When the application server needs the identity authentication of the mobile terminal user, the mobile terminal calculates a dynamic password by using the download quantum key, the application server transfers the dynamic password to the quantum authentication center, and the quantum authentication center notifies the mobile terminal user of a verification result through the application server. The invention also provides an authentication method. The system and the method have the advantages of unconditional safety, high synchronization between key use of the mobile terminal and the quantum authentication center, and the improvement of the convenience of user use.

The invention proposes a quantum authentication and encryption method based on two-photon entanglement state suitable for quantum Email. The two communicators, Alice and Bob, share in advance two private keys used to determine the preparation of the two-photon entangled state. The sender Alice sends the sequence of two-photon entangled states encoding her classical bit to the receiver Bob by one-step quantum transmission. After receiving the encoded sequence of quantum states, Bob uses the joint two-photon measurement to decode Alice's classical bits and authenticate the integrity of Alice's secret with the help of a one-way hash function. The method of the present invention uses only one step of quantum transmission and requires neither a public discussion nor a trusted third party. Therefore, the method of the present invention is applicable to situations such as quantum E-mail that only require the receiver to be offline. The method of the present invention enables message authentication to be accurate to the 1-bit level with the help of a one-way hash function. Moreover, the information theory efficiency of the method of the present invention is as high as 100%.

The invention discloses a quantum key automatic charging method and system adapted to electric power business, complies with the deployment architecture of power business master station convergence and power business terminal access, and divides quantum key into quantum authentication key, quantum encryption key key and quantum update key, the quantum authentication key is used for identity authentication during communication interaction, the quantum encryption key is used for encryption and decryption of data during communication interaction, and the quantum update key is used to update the quantum authentication key and quantum encryption key And / or when the quantum key is updated, the encryption and decryption of the new quantum key in the communication interaction. Quantum authentication, encryption and / or updating keys are updated through quantum updating keys, so as to realize automatic filling and updating of quantum keys.