计算机应用研究2011，Vol.28Issue(1)：322-325,4.DOI:10.3969/j.issn.1001-3695.2011.01.090
无证书的完美同时签密研究
Research of certificateless perfect concurrent signcryption
摘要
Abstract
Perfect concurrent signature was introduced as an efficient approach to solving the problem of fair exchange of signatures.Almost all fair exchange e-commerce protocols that have been proposed until now either do not provide message privacy protection or adopt thesign-then-encrypt scheme to provide confidentiality.However, confidentiality is an important requirement of e-commerce protocols.This paper proposed a new concept called perfect concurrent signcryption which combined the concepts of perfect concurrent signature and signcryption together to resolve the confidentiality problem in e-commerce systems.It also proposed a certificateless perfect concurrent signcryption scheme and proved its security in the random oracle model.The scheme published the two ambiguous signcryptions in any order.Compared with the sign-then-encrypt scheme,this scheme enjoys shorter message length and less operation cost, which makes the scheme has wide application prospects.关键词
无证书的/完美同时签名/签密/公平交换分类
信息技术与安全科学引用本文复制引用
罗铭,闫其军,邹春华,闻英友..无证书的完美同时签密研究[J].计算机应用研究,2011,28(1):322-325,4.基金项目
国家自然科学基金资助项目(60803131) （60803131）
