3 results about "Quantum authentication" patented technology

The application discloses a substation relay protection communication authentication method based on continuous variable quantum key distribution, and belongs to the technical field of wireless communication; the method is: evaluating the physical channel quality of each link, screening a safe link; generating quantum keys by using the safe link, and cutting the generated quantum keys according to the key block granularity; adopting a GQA handshake protocol to establish a complete mapping relationship between the key block and the frame sequence number; performing GQA quantum authentication encapsulation on a GOOSE message; and completing the authentication of a receiving end by adopting a three-layer verification mode. The application establishes the mapping relationship between the key block and the frame sequence number by the handshake protocol, the sending end and the receiving end independently calculate the corresponding key block index according to the frame sequence number, any additional key negotiation or synchronous communication is not needed in the message authentication process, the communication of the key block between the sending end and the receiving end is guaranteed, the communication response time is reduced, and the security is improved.

This invention discloses a post-quantum cryptographic encryption communication device for a satellite constellation communication network, belonging to the field of satellite communication security technology. It includes a constellation link management module, a post-quantum authentication module, a post-quantum key negotiation module, a data encryption processing module, a secure key storage module, and a hardware acceleration and power consumption control module. The constellation link management module is communicatively connected to the post-quantum key negotiation module, the post-quantum authentication module, and the data encryption processing module. The post-quantum authentication module is communicatively connected to the post-quantum key negotiation module and the secure key storage module. The post-quantum key negotiation module is communicatively connected to the data encryption processing module, the secure key storage module, and the hardware acceleration and power consumption control module. This invention uses the above device to achieve real-time perception of the satellite communication link status through the constellation link management module, enabling key negotiation to be dynamically triggered according to constellation topology changes, thereby improving communication security.

The present disclosure relates to a quantum communication system. Particularly, the present disclosure relates to a device and a method for performing quantum state modulation based on quantum authentication in a quantum communication system.