期刊名称：International Journal of Computer Science and Network Security
印刷版ISSN：1738-7906
出版年度：2009
卷号：9
期号：4
页码：180-186
出版社：International Journal of Computer Science and Network Security
摘要：In this paper, a new short hierarchical identity-based signature (HIBS) scheme is proposed in the standard model. This scheme has some advantages over the available schemes: the private keys size shrinks as the identity depth increases and the signature size is constant as it consists of three group elements. Furthermore, under the generalization selective-identity security model, we reduce the security of the new scheme to the h-Exponent Computational Diffie-Hellman (h-CDH) assumption. This assumption is more natural than many of the hardness assumptions recently introduced to HIBS in the standard model.
关键词：Hierarchical identity-based signature; the standard model; h-CDH assumption; provably secure
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