基于AES-RSA的IEC 61850数据安全传输方法

IEC 61850 Data Security Transmission Method Based on AES-RSA

IEC 61850系列标准主要应用在智能变电站的模拟量采集端和客户端监控系统间进行通信。相比于传统变电站,智能变电站基本上取消了硬接线,模拟量就地采集后直接转换成数字量依照规约从网络中进行传输。由于IEC 61850协议基于TCP/IP协议,数据通过以太网传输,因此多种对以太网的攻击均可以使用对IEC 61850通信过程造成影响。为增强IEC 61850通信过程的安全性,本文针对IEC 61850通信过程中可能面临的风险,提出了基于AES-RSA算法的安全通信机制,并对此通信方法进行了测试分析。实验结果表明,基于AES-RSA混合算法的IEC 61850的通信方法跟仅使用RSA加密算法相比,不仅增强了数据传输的安全性,而且完成一次通信认证的速度更快,满足IEC 61850通信对数据传输的实时性要求,验证了方法的有效性。

The IEC 61850 series of standards are mainly used for communication between the analog acquisition terminal of the intelligent substation and the client monitoring system.Compared with the traditional substation,the intelligent substation basically cancels the hard wiring.The analog quantity is directly converted into digital quantity and collected from the network according to the specification.Since the IEC 61850 protocol is based on the TCP/IP protocol and data is transmitted over Ethernet,a variety of attacks on Ethernet can be used to affect the IEC 61850 communication process.In order to enhance the security of IEC 61850 communication process,this paper proposes a secure communication mechanism based on AES-RSA algorithm for the possible risks in IEC 61850 communication process,and tests this communication method.The experimental results show that the communication method of IEC 61850 based on AES-RSA hybrid algorithm not only enhances the security of data transmission,but also completes the communication authentication faster than the RSA encryption algorithm.It satisfies the IEC 61850 communication for data transmission.The real-time requirements verify the effectiveness of the method.