Management query system and method for hidden communication key node

Abstract

The invention belongs to the technical field of information security, and discloses a management query system and method for a hidden communication key node. The system comprises a key node set management query server, a network user terminal and a key node terminal. The key node set management query server can provide registration and key distribution services for the network user terminal, generate and manage a key node set and a user set, monitor bandwidth abnormal nodes and provide key node set query services for the network user terminal, the network user terminal can send an encrypted query service request to the key node set management query server, and the key node terminal generates an obfuscated target by adopting a UDP-based data backhaul obfuscation strategy when sending backhaul data to a client, and sends data to the real client and the obfuscated target at the same time. Management query of key nodes and an effective data backhaul confusion scheme are realized, the useridentity hiding performance is improved, and the method is used for enhancing the security of a hidden communication system.

Description

technical field [0001] The invention belongs to the technical field of information security, and in particular relates to a management query system and method for concealing key communication nodes. Background technique [0002] At present, the closest existing technology: with the exposure of the "Prism Gate" incident, the issue of identity and privacy disclosure of network users has become the focus of attention. Modern anonymous communication systems can be traced back to the Mix-Net design proposed by Chaum. In the subsequent development process, the relay-based anonymous communication system gradually developed into two directions, one is a high-performance anonymous system with a large delay represented by Babel, Mix-master, and Mixminion, and the other is A low-latency anonymization system for the purpose of anonymizing interactive network traffic. [0003] Currently, low-latency anonymous communication systems are widely used around the world. Its communication ar...

AI Technical Summary

Problems solved by technology

Although the data is forwarded using layered encryption, a single node cannot obtain the node composition information of the complete link, data management query, but the entry node, as a node that directly communicates with the client, understands and masters the client's real IP and other related networks information, resulting in technical problems: 1. If the entry node is a malicious node deployed by the attacker in the network, then the attacker can grasp the real IP addresses of all users using the entry node, and the attacker can combine traffic correlation attacks, delay Statistics and other technologies conduct deanonymization attacks on users, so an effective key node management and allocation scheme is required to reduce the influence of these malicious nodes in the network on users; it is a key node in the hidden communication network

[0006] 1) According to the node selection and allocation algorithm, a large number of users will choose entry nodes with high performance, but there are still a small number of users who will choose entry nodes with relatively ordinary performance. Due to the small number of users using entry nodes wit

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