An Improved Identity-based Society Oriented Signature Scheme
In a society oriented signature scheme, a signature is produced by several co-signers simultaneously in a group. Saeednia proposed an identity-based society oriented signature scheme. However, there are some security weaknesses in the scheme. Zhu and Wang et al. showed two different attacks against the identity-based society oriented signature scheme respectively. In this paper, we proposed an improved identitybased society signature scheme with anonymous signers. The proposed identity-based society signature scheme removed the weaknesses of Saeednias signature scheme. A detailed analysis demonstrated that the improved scheme is secure against all the attacks above-mentioned. In addition, when the structure of a group changes or a group represents different organizations to sign messages at the same time, the improved scheme wont reveal the secret key of any entity or even the value of the ratio of two secret keys. Our scheme doesnt require that the clerk must be a trusted and online party.
cryptography signature identity group
Zuowen Tan
School of Information Technology, Jiangxi University of Finance & Economics, Nanchang 330013,Jiangxi Province, P.R. China Key Lab of Network Security and Cryptology, Fujian Normal University, Fuzhou 350007,Fujian Province, P.R. China
国际会议
武汉
英文
1012-1015
2009-11-18（万方平台首次上网日期，不代表论文的发表时间）