随着P2P网络的发展和广泛使用,用户隐私安全的重视程度不断提高.现有的加密技术虽然可以保护通信中的数据内容,却不能很好地保护用户身份,因此在利用匿名技术的同时也要防止不法分子趁机散布非法信息.为了在P2P系统中实现匿名通信,提出了一种基于无环分组路由选择机制,即通过将网络地址切割、成员分组保护、组管理员统一管理来实现通信隐私和涉密通信.仿真实验表明,采用此机制的路由策略得到明显改善,且在保证通信效率的同时提高了用户的匿名性,从而使P2P网络得到更有效的实时保护.%With the development and wide use of P2P networks,user privacy and security come to be valued continuously. Although the content of correspondence data can be protected by existing encryption which can not protect the user's identity very well, we can't give outlaw the opportunity to spread the illegal information when the anonymous technology is used. Therefore, this paper put forward a method based on acyclic packet routing mechanism to achieve the anonymous communication in P2P system,communicate privacy and confidential communications by cutting network address, protecting members group,and uniformly managing group administrator. Simulation results show that routing strategy has been improved obviously by the mechanism. The mechanism can guarantee communication efficiency while improving the anonymity of user,and the P2P network can be protected in real-time effectively.
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