| 一种可定期更新的多秘密共享方案 |
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| 引用本文： | 杨曦侯整风. 一种可定期更新的多秘密共享方案[J]. 计算机应用, 2007, 27(7): 1609-1610 |
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| 作者姓名： | 杨曦侯整风 |
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| 作者单位： | 合肥工业大学,计算机与信息学院,合肥,230009;合肥工业大学,计算机与信息学院,合肥,230009 |
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| 摘 要： | 基于椭圆曲线密码体制，在PANG-WANG（t, n）多秘密共享方案的基础上，提出了一种新的多重秘密共享方案。在该方案中，参与者能自主选择子密钥；且参与者的秘密份额能定期更新。与PANG-WANG方案相比，该方案解决了原方案子密钥必须由庄家发放、秘密份额不可更新等问题，具有较好的灵活性和更高的安全性。
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| 关 键 词： | (t n)门限 多重秘密共享 秘密份额 子密钥 |
| 文章编号： | 1001-9081（2007）07-1609-02 |
| 收稿时间： | 2007-01-12 |
| 修稿时间： | 2007-01-122007-03-09 |
Periodically renewed multi-secret sharing scheme |
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| YANG Xi,HOU Zheng-feng. Periodically renewed multi-secret sharing scheme[J]. Journal of Computer Applications, 2007, 27(7): 1609-1610 |
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| Authors: | YANG Xi HOU Zheng-feng |
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| Affiliation: | School of Computer and Information, Hefei University of Technology, Hefei Anhui 230009, China |
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| Abstract: | A new multi-secret sharing scheme was proposed based on elliptic curve cryptography and PANG-WNAG's(t,n) multi-secret sharing scheme.The scheme has properties as follows:(1) participants can choose sub-secrets by themselves;(2) shadows of every participant can be renewed periodically.Compared with PANG-WANG's scheme,this scheme compensates for the disadvantages of the original scheme such as sub-secrets must be chosen by dealer and shadows cannot be renewed,so this scheme has better flexibility and higher security. |
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| Keywords: | (t n) threshold multi-secret sharing secret shadow sub secret |
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