This paper proposes a new P2P hybrid anonymous communication system for two-way anonymous communication based on analysis of existing anonymous communication technology. The system is based on the idea of secret sharing and combined with MIX and Crowds and mulicast technology. It achieves sender anoymity and receiver anonymity and communication relationships hidden. Each node in anonymous communication system may be the sender or the receiver or the service providers. Based on the idea of secret sharing, the sender encrypts the information and slices it, then sends it to more than one link using MIX and Crowds. When the information reaches the last node of each link, it is sent to the the receiver's multicast group. The information returned by the receiver is in the same way to take a different path to reach the sender's multicast group. The theoretical analysis shows that, the system is of a higher anti-aggressive compared with most anonymous communication systems.%在分析现有匿名通信技术的基础上,本文针对匿名通信中的双向匿名问题,提出一种新的P2P混合匿名通信系统.该系统基于秘密共享思想,结合MIX和Crowds以及组播技术,实现匿名通信系统的发送者匿名、接收者匿名以及通信关系的隐藏.匿名通信系统内各节点可以是发送者、接收者和服务者三种角色,发送者基于秘密共享的思想,将信息加密分片,采用MIX和Crowds技术在多条链路上发送,在各链路最后一节点,通过组播技术发送到接收者所在的多播组.返回信息由接收者采用同样的方式走不同路径到达发送者所在的多播组.理论分析结果表明,该系统与多数匿名通信系统相比有较高的抗攻击性.
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