Domestic communication encryption method suitable for rail transit

• Main Authors: ZHAI TIENING, HUANG HUI, ZHOU XUEBING, BI HUIJIE, LI JIE, JIN SIXIN, MA YUXIN, YANG ZHIHUI
• Format: Patent
• Language: Chinese; English
• Published: 01.12.2020
• Subjects: ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; WIRELESS COMMUNICATIONS NETWORKS

The invention relates to the field of domestic encryption of rail transit intelligent operation and maintenance system calling key production system data, in particular to a domestic communication encryption method suitable for rail transit. The method comprises the following steps: after an operation and maintenance system interface server establishes connection with a production system interfaceserver and before data interaction, performing bidirectional identity authentication and key negotiation by using an asymmetric encryption algorithm SM2 in an encryption algorithm; when the operationand maintenance system interface server performs data communication with the production system interface server, enabling the production system interface server to perform message recombination on anoriginal data packet, filling an integrity check field, and performing data encryption by using a symmetric encryption algorithm SM4 in a domestic cryptographic algorithm; and after receiving the encrypted message, enabling th