| 对共享验证门限代理签密方案的改进 |
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| 引用本文： | 邢星,谢琪. 对共享验证门限代理签密方案的改进[J]. 计算机工程与应用, 2008, 44(33): 89-92. DOI: 10.3778/j.issn.1002-8331.2008.33.028 |
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| 作者姓名： | 邢星 谢琪 |
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| 作者单位： | 杭州师范大学,理学院,杭州,310036;杭州师范大学,理学院,杭州,310036;杭州师范大学,研究生学院,杭州,310036 |
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| 基金项目： | 国家自然科学基金，浙江省自然科学基金 |
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| 摘 要： | 指出了王等的具有共享验证的门限代理签密方案存在两个安全性缺陷，一是该方案并不满足共享验证这一特性，二是代理组可修改授权证书。进一步，给出了改进方案，克服了原方案的缺陷。
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| 关 键 词： | 门限代理签密 共享验证 验证签密 |
| 收稿时间： | 2008-05-20 |
| 修稿时间： | 2008-8-4 |
Analysis and improvement on threshold proxy signcryption scheme with shared verification |
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| XING Xing,XIE Qi. Analysis and improvement on threshold proxy signcryption scheme with shared verification[J]. Computer Engineering and Applications, 2008, 44(33): 89-92. DOI: 10.3778/j.issn.1002-8331.2008.33.028 |
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| Authors: | XING Xing XIE Qi |
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| Affiliation: | 1.School of Science，Hangzhou Normal University，Hangzhou 310036，China 2.Graduate School，Hangzhou Normal University，Hangzhou 310036，China |
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| Abstract: | Two attacks on Wang et al.'s threshold proxy signcryption scheme with shared verification show that their scheme are insecure.The one is that their scheme does not has the property of shared verification;the other is that their scheme cannot resist the attack of revising the warrant.Further,a modification to their threshold proxy signcryption scheme can satisfy the security requirement. |
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| Keywords: | threshold proxy signcryption shared verification verification signcryption |
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