一种P2P信任管理安全性协议

Security Protocol for Protecting the P2P Trust Information Management

通常是通过建立相应的信任管理机制来遏制P2P网络中的节点的自私与欺诈行为,但对信任管理机制本身存在的安全性问题关注则很少,使信任管理系统无法有效应付针对信任信息管理机制的安全攻击。针对这一问题,提出了确保信任管理安全性的安全协议(简称为SPRI)。分析及仿真实验表明,SPRI可以有效地遏制针对信任管理中的身份伪造及信息篡改的攻击,并且效率高,普适性强。

Most of previous work concentrates on how to rate peers＇ behaviors with the trust mechanism and how to establish the reputation-based trust management system（TMS）,but takes less consideration of the security problems in TMS.As for this issue,this paper proposed a security protocol for protecting the P2P trust information management（SPRI）.Theoretical analysis and simulation experiments show that,SPRI can effectively suppress the sybil attackers and trust information tamper peers in transmissions with little time overhead.Moreover,it can be easily integrated into various reputation-based TMSs.