Method for analyzing network capture packet in domestic password encryption signal system

Abstract

The invention relates to a method for analyzing a network capture packet in a domestic password encryption signal system, and the method comprises the following steps: acquiring a dynamically negotiated key in a setting mode, and enabling the key to correspond to information in the network capture packet one by one to finish the analysis of the network capture packet. The method specifically comprises an online analysis sub-method which is used in field debugging, wherein an analysis object is a captured packet captured by a current network in real time, and the analysis of the captured packetis also completed in real time; and an offline analysis sub-method which is used for analyzing and checking problems generated in a normal operation process, wherein an analysis object is a historical network capture packet. Compared with the prior art, the method has the advantages that the maintainability of the whole signal system is guaranteed, great convenience is provided for later operation and maintenance of the signal system, and the like.

Description

technical field [0001] The invention relates to a rail transit signal system, in particular to a method for analyzing network packet capture applied in a signal system encrypted by domestic ciphers. Background technique [0002] The domestic cryptographic algorithm is a cryptographic algorithm independently developed and implemented in my country, which has high security and is recognized and promoted by the State Cryptography Administration. Since the release of the SM2 elliptic curve public key cryptography algorithm by the State Cryptography Administration in 2010, domestic cryptography research has begun to rise. In the case of sufficient theoretical research, the industrialization and engineering application trend of domestic cryptography technology has emerged, and the development trend of its cross-integration with other industries has become irresistible. The introduction and application promotion of domestic cryptographic algorithms, on the one hand, conform to the...

AI Technical Summary

Problems solved by technology

However, the vehicle-to-ground wireless communication information has been encrypted by domestic encryption technology, and the communication information has all become ciphertext, and the encryption key adopts a dynamic negotiation mechanism. According to the general debugging and maintenance method, it is impossible to observe and analyze the network capture packets, resulting in development and debugging personnel. Further positioning and analysis of problems will bring great inconvenience and uncertainty to the debugging and maintenance of the signal system

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