| 无证书签密机制的安全性分析 |
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| 引用本文： | 何德彪.无证书签密机制的安全性分析[J].软件学报,2013,24(3):618-622. |
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| 作者姓名： | 何德彪 |
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| 作者单位： | 武汉大学 数学与统计学院,湖北 武汉 430072 |
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| 基金项目： | 高等学校博士学科点专项科研基金(20110141120003) |
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| 摘 要： | 为了避免复杂的双线性对运算和提高签密机制的性能,Liu等人提出了一种不使用双线性对的无证书签密机制.同时,随机谕示模型下证明了机制是可证安全.通过给出具体的攻击算法,证明了Liu等人所提出的机制不能抵抗类型1敌手的攻击.为了抵抗这种攻击,给出了一种有效的方法.
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| 关 键 词： | 签密 无证书 随机谕示模型 椭圆曲线 |
| 收稿时间： | 9/7/2011 12:00:00 AM |
| 修稿时间： | 2012/4/20 0:00:00 |
Security Analysis of a Certificateless Signcryption Scheme |
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| HE De-Biao.Security Analysis of a Certificateless Signcryption Scheme[J].Journal of Software,2013,24(3):618-622. |
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| Authors: | HE De-Biao |
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| Affiliation: | School of Mathematics and Statistics, Wuhan University, Wuhan 430072, China |
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| Abstract: | To avoid complicated pairing operation and improve performance, Liu, et al. proposed a pairing-free certificateless signcryption scheme, and claims that their scheme is provably secure in a strengthened security model. Unfortunately, by giving concrete attacks, the sutdy indicates that Liu's et al. certificateless signcryption scheme is not secure in this strengthened security model. To solve the problem, an efficient countermeasure is also proposed. |
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| Keywords: | signcryption certificateless random oracle model elliptic curve |
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