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为了探索变电站间测控信号传输更理想的安全通信方式,解决量子密钥分发与一次一密结合中的工程实用化问题,提出了一种解决方案,将明文、密文和密钥都统一为标准的E1接口信号,满足真正的一次一密体制要求。量子密钥分发基于偏振态编码,采用诱骗态协议,能根据光纤信道的质量,通过选择压缩比1,128,1 024来调整量子密钥分发的速率,并支持中国和国际标准的商用密码加密算法。模拟仿真表明:与经典密钥分发系统相比,所提方案在机密性、完整性和可识别性等方面都具有优势,而且具备密性强化的独特性。
In order to explore a more ideal way of secure communication of measurement and control signal transmission between substations and to solve the problem of practical application of quantum key distribution and one-time one-in-one combination, a solution is proposed to unify plaintext, ciphertext and key E1 interface signal to meet the real one-time system requirements. Quantum key distribution is based on the polarization state coding and adopts the lure protocol. It can adjust the quantum key distribution rate according to the quality of the fiber channel by selecting the compression ratio of 1,128,1 024 and supports Chinese and international commercial encryption algorithms. The simulation results show that the proposed scheme has the advantages of confidentiality, integrity and identifiability compared with the classical key distribution system, and has the advantage of enhanced confidentiality.