A Content Authentication Scheme in Hybrid P2P Network
In P2P file sharing network, the replicas of the same content are stored at various locations. This allows content to be accessed even when some nodes are disconnected. However, this high degree of redundancy implies that it is necessary to find some security mechanisms in order to avoid attacks based on content pollution. In this paper, we propose a content authentication method for hybrid P2P network. For it is unrealistic to apply a trusted third party in P2P network , our scheme relies on a set of up-layer nodes playing the role of a certificate authority in hybrid P2P network . In our scheme, we use Merkle Hash Tree and Certificateless Threshold Ring Signature to authenticate the integrality of content. Foremost, the threshold ring signature based on certificateless public key cryptology scheme is firstly mentioned in this paper. Finally, we solve the problems about fault tolerant storage the authentication information and the digital signature resists replay attack.
content authentication merkle hash tree certificateless threshold ring signature
Liang Shi Zhongwen Li
Department of Computer Science Xiamen University Xiamen, China Department of Computer Science Chengdu University Chengdu, China
国际会议
武汉
英文
1168-1171
2009-11-18（万方平台首次上网日期，不代表论文的发表时间）