Anonymous Identity-Based Broadcast Encryption with Adaptive Security

摘要：

　　Anonymous identity-based encryption(IBE) can be used to build Public-Key Encryption with Keyword Search.But no efficient previous works in the identity-based broadcast encryption are known.In this paper, we extend the anonymous IBE definition to the identity-based broadcast encryption.Then a new construction of anonymous identity-based broadcast encryption is pro posed in the standard model.In the new construction, the ciphertexts and pri vate keys are indistinguishable for the different receivers set.The proposed scheme has constant size ciphertexts and achieves adaptive security.In addi tion, the security of the proposed scheme is reduced to the static assumptions in a composite group.

关键词： Identity-based encryption anonymous identity-based broadcast encryption dual system encryption static assumptions standard model

作者: Leyou Zhang Qing Wu Yi Mu

作者单位: Department of Mathematics,Xidian University,Xian,710126,China;School of Computer Science and Softwa School of Automation,Xian University of Posts and Telecommunications,Xian,710l21,China School of Computer Science and Software Engineering,University of Wollongong,Wollongong,NSW,2522 Aus

会议类型: 国际会议

会议名称: The 5th International Symposium on Cyberspace Safety and Security ( CSS2013)(第五届国际网络空间安全和安保研讨会)

会议地点: 张家界

会议语种:英文

页码: 258-271

在线出版日期: 2013-11-13（万方平台首次上网日期，不代表论文的发表时间）