30 results about "Quantum authentication" patented technology

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 discloses an automatic quantum key charging method and system adapting to electric power services. Quantum keys are divided into a quantum authentication key, a quantum encryption key and a quantum updating key according to a deployment structure for electric power service main station convergence and electric power service terminal access; the quantum authentication key is used foridentity authentication during communication interaction; the quantum encryption key is used for encryption and decryption of data during the communication interaction; and the quantum updating key isused to encrypt and decrypt a new quantum key in the communication interaction when used to update the quantum authentication key and the quantum encryption key and/or the quantum updating key. The quantum updating key updates the quantum authentication, encryption and/or updating keys, thereby realizing automatic charging and updating of the quantum keys.

The invention discloses a quantum authentication system integrated on a single circuit board. The quantum authentication system comprises an integrated circuit board, a quantum light source module, a card slot, a decoding detection module, a touch screen display chip and a quantum key card formed by an incentive optical modulator chip with a window on which an optical PUF is fixedly packaged, wherein the quantum light source module, the card slot, the decoding detection module and the touch screen display chip are sequentially interconnected and integrated on the integrated circuit board through soldering from left to right and are integrally packaged through a shell. According to the quantum authentication system integrated on the single circuit board, the optical PUF and the incentive optical modulator chip are integrated, and the purpose of position alignment between excitation light and the optical PUF is achieved; the purpose of position alignment between the quantum key card and the decoding detection module is achieved through the wave-front feedback adaptive algorithm, and the stability and the repeatability of the system are greatly improved. The quantum authentication system integrated on the single circuit board also has the advantages of being small in size, light in weight, compact in structure and fast and convenient to use and carry, and is suitable for the fields of quantum security certification, identity recognition and quantum encryption.

The invention discloses a quantum authentication encryption protocol suitable for a quantum Email and based on a double-photon entanglement state. Two communicators Alice and Bob share two private keys for deciding double-photon entanglement state preparation in advance. The sender Alice sends a double-photon entanglement sequence encoded with classical bits of Alice to the receiver Bob in a one-step quantum transport manner. After receiving the encoded quantum state sequence, Bob decodes the classical bits of Alice by utilizing double-photon combined measurement and authenticates integrity of a secret of Alice with the help of a one-way hash function. The protocol disclosed by the invention only uses one-step quantum transport and not only does not need a public discussion, but also does not need a credible third party. Therefore, the protocol disclosed by the invention can be suitable for the situations, such as the quantum Email and the like, which only require the receiver to be positioned below the line. The protocol disclosed by the invention enables accuracy of massage authentication to be the level of 1 bit with the help of the one-way hash function. Moreover, the information theory efficiency of the protocol disclosed by the invention reaches 100 percent.

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 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 a quantum authentication method for access control among three essential elements for cloud computing. The three essential elements for cloud computing are a data owner Downer, a data user DUser and a cloud service provider CSP. The method comprises: setting the CSP and the DUser as an ERP (entangled pair) and enabling the CSP and the DUser to possess the same identity number legally, and performing mutual quantum authentication for the CSP and the DUser; setting the Downer and the CSP as an ERP and enabling the Downer and the CSP to possess the same identity number legally, and performing mutual quantum authentication for the Downer and the CSP; realizing successful quantum authentication among the Downer, the DUser and the CSP if the mutual quantum authentication between the CSP and the DUser and the mutual quantum authentication between the Downer and the CSP are successful; and quantum authentication among the Downer, the DUser and the CSP fails if the mutual quantum authentication between the CSP and the DUser and the mutual quantum authentication between the Downer and the CSP are not successful.

The invention provides a miniature quantum authentication system. The system prepares a single photon source by using a laser pulse attenuation method, encodes incident light waves by using a high-speed space light modulator, and irradiates the encoded light onto an optical PUF key composed of random media to generate speckle response, and processes the speckle by using the space light modulator to accomplish registration and authentication processes of the PUF key. According to the miniature quantum authentication system provided by the invention, the light path is folded on a three-dimensional direction, the volume of the whole authentication system is reduced by using a caged light path system, and commercialized equipment is adopted, so that the manufacturing cost is very low.

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 belongs to the technical field of quantum computing and quantum authentication, and relates to a quantum group authentication method based on a Grover algorithm. The method comprises thesteps that an authentication management center prepares an initial authentication quantum state; the private shares are sent to a network group needing to be authenticated through a safe quantum channel, then the private shares are prepared to serve as registered user identity information and sent to a registered user through a classic channel, and a group identifier is generated for the networkgroup and sent to the network group through the classic channel; in the authentication stage, each user participating in authentication performs unitary transformation on the authentication quantum state according to own identity information and the group identifier, and finally, the group transmits the authentication quantum state after unitary transformation back to the authentication managementcenter for comparison to obtain an authentication result. According to the invention, the Grover operator is used, the usage of the Grover operator is expanded, the group user identity and the network group identifier can be authenticated at the same time, and the security of the authentication method is improved through dual authentication.

The invention provides a digital certificate generation method, an identity authentication method, a quantum CA authentication center and a quantum CA authentication system, and each CA authentication center is used for providing a message authenticity authentication function, namely a quantum digital signature service based on trusted identity authentication. The CA authentication center comprises a registration authentication unit, a basic function unit, a quantum security unit and an interface unit which are connected in sequence. When a signature is initiated between two users, a CA authentication center and two communication parties jointly form a message authenticity verification system, firstly, a signer requests one identity authentication from the CA authentication center, and then quantum security verification is completed on the authenticity of a sent message through the processes of secret key preparation, signature generation and signature verification. And completing the quantum digital signature. According to the invention, the CA needs to issue a trusted identity certificate to each user, but the certificate does not need to be bound with a secret key for verifying the signature, so that the certificate management of the CA with quantum security is more convenient.