| 非延展水银承诺方案（英文) |
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| 作者姓名： | 徐海霞 李红达 李宝 |
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| 作者单位： | 信息安全国家重点实验室(中科院研究生院) |
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| 摘 要： |
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| 关 键 词： | 承诺 非延展 水银 多陷门 |
Non-malleable mercurial commitment scheme |
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| Authors: | XU Hai-Xia LI Hong-Da LI Bao |
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| Institution: | State Key Labortory of Information Security(Graduate School of Chinese Academy of Sciences) |
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| Abstract: | Mercurial commitment scheme is an interesting variation of regular com- mitment scheme, which additionally allows for a soft decommit stage. The soft decommitments are not required to binding but can not con°ict with the true decommmitments (if the true decommmitments exist). In our paper, we consider reusable non-malleable mercurial commitment schemes. Reusable non-malleability is that the adversary accesses to an arbitrary number of commitments, which is a strictly stronger security notion than general non- malleability in which the adversary has access to only one commitment. We adopt the reusability mainly due to the inherent property of mercurial com- mitment scheme. We introduce the notion of reusable non-malleable mercu- rial commitment scheme and give a construction based on the multi-trapdoor mercurial commitment scheme. |
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| Keywords: | commitment non-malleable mercurial multi-trapdoor |
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