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Title |
A New Construction of Short Hierarchical Identity-based Signature in the Standard Model |
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Author |
Leyou Zhang, Yupu Hu |
| Citation |
Vol. 9 No. 4 pp. 180-186 |
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Abstract |
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. |
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Keywords |
Hierarchical identity-based signature, the standard model, h-CDH assumption, provably secure |
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