Provably Secure Certificateless Authenticated Asymmetric Group Key Agreement
Asymmetric group key agreement allows a group of mem bers to establish a public group encryption key while each member has a different secret decryption key.Knowing the group encryption key, a sender can encrypt to the group members so that only the members can decrypt.This paper studies authenticated asymmetric group key agree ment in certificateless public key cryptography.We formalize the security model of certificateless authenticated asymmetric group key agreement and capture typical attacks in the real world.We next present a strongly unforgeable stateful certificateless batch multi-signature scheme as build ing block and realize a one-round certificatless authenticated asymmet ric group key agreement protocol to resist active attacks.Both the new multi-signature scheme and the resulting group key agreement protocol are shown to be secure under the well-established computational Diffie Hellman and the k-Bilinear Diffie-Hellman exponent assumptions in the random oracle model, respectively.
Certificateless public key cryptography group key agreement asymmetric group key agreement
Lei Zhang Qianhong Wu Bo Qin Hua Deng Jianwei Liu WenChang Shi
Shanghai Key Laboratory of Trustworthy Computing,Software Engineering Institute,East China Normal Un School of Electronic and Information Engineering,Beihang University,China School of Information,Renmin University of China,Beijing,China School of Computer,Wuhan University,Wuhan,China
国际会议
福州
英文
496-510
2014-05-05（万方平台首次上网日期，不代表论文的发表时间）