| 投影 C *-体制的缺陷 |
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| 引用本文： | 袁峰,杨阳,胡予濮,欧海文.投影 C *-体制的缺陷[J].中国通信学报,2010,7(4):29-34. |
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| 作者姓名： | 袁峰 杨阳 胡予濮 欧海文 |
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| 摘 要： |
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| 收稿时间： | 2011-06-23; |
Weakness in Projected C*- Scheme |
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| YUAN Feng,YANG Yang,HU Yupu,OU Haiwen.Weakness in Projected C*- Scheme[J].China communications magazine,2010,7(4):29-34. |
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| Authors: | YUAN Feng YANG Yang HU Yupu OU Haiwen |
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| Affiliation: | 1Key Laboratory of Computer Networks and Information Security, Ministry of Education, Xidian University, Xi’an, 710071, China.
2Key Laboratory of Information Security, Beijing Electronic Science and Technology Institute, Beijing, 100070, China. |
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| Abstract: | This paper presents an algebraic method to attack the projected C*- cryptographic scheme. The attack applies the affine parts of the private keys and the weakness caused by the structures of the private keys to find a large number of linear equations. The attack can recover the private keys efficiently when the parameters are small enough. Meanwhile, the weak keys of the scheme are found and the private keys can be recovered efficiently once the weak keys are used.The paper also proposes a new modification of C*- cryptographic scheme, which is not only as efficient as original projected C*? scheme, but also resistant to the differential attack and the attack proposed in this paper. |
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| Keywords: | Information Security Public Key Cryptography Attack Weakness |
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