文献类型：期刊文献

英文题名：Optimistic fair contract signing protocol based on hybrid verifiably encrypted signature scheme

作者：Chen, Li[1]; Gu, Chunxiang[2]

第一作者：陈莉

通讯作者：Chen, L.|[10484098c9c66]陈莉;

机构：[1] Henan University of Economics and Law, Zhengzhou, Henan, 450002, China; [2] Network Engineering Department, Information Engineering University, Zhengzhou, Henan, 450002, China

第一机构：河南财经政法大学

通讯机构：[1]Henan University of Economics and Law, Zhengzhou, Henan, 450002, China|[10484]河南财经政法大学;

年份：2012

卷号：4

期号：12

起止页码：46-54

外文期刊名：Advances in Information Sciences and Service Sciences

收录：EI(收录号：20123015280886);Scopus(收录号：2-s2.0-84864076837)

语种：英文

外文关键词：Network security - Public key cryptography

摘要：ID-based cryptosystem simplifies the key management process, which put a heavy burden on the traditional certificate-based cryptosystems. This paper presents a hybrid verifiably encrypted signature scheme from bilinear pairings, which is proven to secure with the hardness assumption of the computational Diffie-Hellman problem of pairings in the random oracle model. Using this new scheme as kernel components, this paper proposes an efficient contract signing protocol, which is not only fair, but also optimistic, since the third trusted party is involved only in abnormal cases to dispute the arguments. This paper also analyzes the fairness and efficiency of the new protocol, and proves security of the new protocol.