摘要： 混合代理多重签名要求所有签名人共同产生签名，使方案的灵活性和实用性受限。针对该问题，通过引入门限签名，提出一个 (t, n)门限混合代理多重签名方案，在n个签名人组成的签名群中，只需t个或t个以上的签名人同意就可以完成签名。理论分析结果表明，该方案满足不可伪造性、不可否认性、可鉴别性、混合代理多重签名性和门限签名性，且效率高于原方案。

关键词: 数字签名, 代理签名, 代理多重签名, 多重代理多重签名, 混合代理多重签名, 门限签名

Abstract: Flexibility and practicability of hybrid proxy multi-signature are restricted bythe property that all of the signers produce signature together. In order to solve the problem, this paper proposes a (t, n) Threshold Hybrid Proxy Multi-signature(THPM) scheme combing with the threshold signature. A THPM is collaboratively generated by some original signers and some proxy signers on behalf of their original signers in the scheme. Only when t or more than t signers agree, the threshold number group members can produce a valid THPM in the signing group. Theoretical analysis proves that THPM not only has unforgeability, nonrepudiablity, distinguishability and quality of hybrid proxy multi-signature and threshold signature, but also is more efficient than original scheme.

Key words: digital signature, proxy signature, proxy multi-signature, multi-proxy multi-signature, hybrid proxy multi-signature, threshold signature

中图分类号: 

• TP309