一种基于连续变量量子密钥分发的变电站继电保护通信认证方法
By evaluating the physical channel quality, generating quantum key blocks, and establishing a mapping relationship between key blocks and frame sequence numbers, quantum authentication is performed on substation communication messages. This solves the problem that quantum key distribution in existing technologies cannot meet the requirements of real-time performance and compatibility, and achieves secure and reliable communication authentication.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- JIANGSU YUANNENG ELECTRIC POWER ENG
- Filing Date
- 2026-05-09
- Publication Date
- 2026-07-17
AI Technical Summary
Existing substation communication authentication schemes rely on computational complexity assumptions, face the threat of quantum algorithm cracking, and continuous variable quantum key distribution cannot meet the millisecond-level response time requirements of relay protection messages, making it impossible to seamlessly integrate with existing message authentication processes without increasing communication overhead.
By evaluating the physical channel quality to screen the secure link, a quantum key is generated and divided into key blocks. The mapping relationship between the key blocks and the frame sequence number is established using the GQA handshake protocol. Quantum authentication encapsulation is performed on each frame of GOOSE message sent by the Q-Hub, and a three-layer authentication method is used for receiver authentication.
It achieves seamless embedding of quantum keys into existing message authentication processes, ensuring real-time communication and security, without relying on computational complexity assumptions, and reducing response time requirements.
Smart Images
Figure CN122179103B_ABST