A Note on the Security Proof of Yet Another Forward Secure Signature From Bilinear Pairings

摘要：

In the 8th Annual International Conference on Information Security and Cryptology, D. L. Vo and K. Kim proposed yet another forward secure signature from bilinear pairings. They claimed that their signature allows unlimited times of key update and is provably forward secure assuming CDH problem is hard. In this paper, we point out the security analysis of this scheme is not correct. Therefore, their scheme couldn’t achieve the unlimited key update ability they claimed under the condition of provable security. Assuming that the proof of forward security is right in their scheme, we can give the improved theorem and its proof.

关键词： forward security digital signature provable security

作者: Jia Yu Fanyu Kong Xiangguo Cheng Guowen Li Rong Hao Xuliang Li

作者单位: College of Information Engineering,Qingdao University,Qingdao 266071,R.P.China Institute of Network Security,Shandong University,Jinan 250100,R.P.China School of Computer Science and Technology,Shandong Jianzhu University,Jinan 250101,China

会议类型: 国际会议

会议名称: The IET 2nd International Conference on Wireless,Mobile & Multimedia Networks(第二届IET国际无线移动多媒体网络会议)

会议地点: 北京

会议语种:英文

在线出版日期: 2008-10-12（万方平台首次上网日期，不代表论文的发表时间）