Research And Implementation Of Bridge Technology In Anonymous System I2P

With the rapid development of the Internet information era,the frequency of information transmission through the network has become higher and higher,and users are paying more and more attention to their own privacy.Therefore,a variety of anonymous communication tools have emerged.I2P anonymous communication system is known by people,thanks to its anonymous mechanisms such as "garlic routing" and"unidirectional tunnels technology".In order to solve the problem of blocking when joining the I2P network,this paper proposes an I2P bridge design scheme based on the research of Tor bridge technology and combined with the I2P system.Firstly,this article introduces the current mainstream anonymous systems Tor and I2P,and analyzes the infrastructure of the anonymous system bridge technology and the evasion strategies used by the bridge technology in detail,and then analyzes the principle of the Tor bridge and elaborated two excellent Tor bridge:meek and obfs4.Next,the research status of Tor bridges in the past ten years is classified and analyzed.After that,this paper aims at the problem of blocking the I2P connection to the reseed server.Based on the principle of Tor-bridge and the current domestic and foreign research of bridges,and combined with the characteristics of the I2P system,this paper proposes a reputation-based I2P bridge design scheme RIB,which optimized the original distribution scheme based on user reputation without considering the problem of low reputation user experience caused by bridge reputation.Then,I compile and rebuild the I2P source code,put it into production environment in the real I2P network,and verify the effectiveness of the I2P-bridge through the comparative experiment of I2P-bridge reseed and normal reseed.Finally,based on the RIB scheme,this article designs and implements the reputation-based I2P bridge system RIBS in order to expand the scale of the I2P bridge and improve the user experience of the I2P bridge.The RIBS system implements the calculation scheme of bridge reputation and user reputation,ensures that users obtain high-quality bridges,provides bridge upload and new user invitation functions,and provides a guarantee for further expansion of user scale and bridge scale.