Concealed anonymous communication method based on peer-to-peer network

Abstract

The invention relates to a concealed anonymous communication method based on a peer-to-peer network. The method comprises two stages including concealed handshake and data exchange, wherein the concealed handshake stage comprises the steps that a communication initiator secretly finds another communication end in a large-scale P2P (Peer-to-Peer) network, mutual authentication is secretly performed on the communication initiator and the communication end, and a data channel consulting site is acquired through negotiation; the data exchange stage comprises the step that both communication parties realize data exchange through the negotiated data channel consulting site instead of direct interaction with each other, wherein during data interaction, the communication initiator derives a plurality of sub-data channel consulting sites through the negotiated data channel consulting site and divides a to-be-sent document into a plurality of sub-piece documents which are mapped to the sub-data channel consulting sites, while the other commutation end obtains required sub-piece documents at corresponding sub-data channel consulting sites, and then the sub-piece documents can be jointed to form the original document. The method can provide an anonymous document sharing function and effectively protect privacy of users, so that secrete communication is realized.

Description

technical field [0001] The invention relates to the field of information security, including covert communication and anonymous communication, and in particular to a covert and anonymous communication method based on a peer-to-peer network. Background technique [0002] In recent years, the Internet has gradually become an important tool for people's daily life and entertainment. However, with the development of the Internet and people's pursuit of network privacy, more and more attention has been paid to the issue of network monitoring. The auditing and in-depth analysis of people's network behavior has brought a great threat to people's privacy. [0003] For a long time, anonymous communication systems have become an effective way for people to avoid network auditing and traffic analysis. However, although existing anonymous communication systems such as Tor and Freenet can hide the identity of users, they often cannot hide the fact of communication. Existing anonymous co...

AI Technical Summary

Problems solved by technology

[0004] In addition, as a distributed system, the P2P system has been widely used for its scalability and peer-to-peer communication characteristics. However, the existing P2P network cannot provide users with better concealed and anonymous file sharing.

On the one hand, although networks such as Emule and BitTorrent have good scalability and high performance, peer nodes are easily monitored by any other peer nodes; on the other hand, P2P anonymous networks (such as Freenet, oneswarm, etc.) provide With the feature of anonymous file sharing, it can protect the privacy of users, but it cannot hide the fact of their communication

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