| 无证书两方密钥协商方案 |
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| 引用本文： | 刘文浩,许春香.无证书两方密钥协商方案[J].软件学报,2011,22(11):2843-2852. |
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| 作者姓名： | 刘文浩 许春香 |
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| 作者单位： | 1. 杭州师范大学信息科学与工程学院,浙江杭州,310012
2. 电子科技大学计算机科学与工程学院,四川成都,611731 |
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| 基金项目： | 国家高技术研究发展计划(863)(2009AA01Z415) |
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| 摘 要： | 给出了一个无双线性对的无证书两方密钥协商方案,并演示了这些不安全无证书方案存在的攻击.只要每方至少有1个未泄露的秘密值,该方案在最强的安全模型下就是安全的.即使密钥生成中心知道双方的临时私钥或显示双方的秘密值/替换公钥(但不能同时),但只要计算Diffie-Hellman假设成立,该方案在随机预言机模型下也被证明是安全的.该方案消除了对运算,与其他无证书密钥协商方案相比,该方案是己知无证书安全协商方案中计算复杂度最低的.该方案尤其适合于带宽受限的通信环境中使用,如Ad Hoc网络、无线传感器网络等.
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| 关 键 词： | 密钥协商 两方协议 无证书 无双线性对 |
| 收稿时间： | 2010/5/24 0:00:00 |
| 修稿时间： | 2010/8/13 0:00:00 |
Two Party Certificateless Key Agreement Schemes |
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| LIU Wen-Hao and XU Chun-Xiang.Two Party Certificateless Key Agreement Schemes[J].Journal of Software,2011,22(11):2843-2852. |
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| Authors: | LIU Wen-Hao and XU Chun-Xiang |
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| Affiliation: | LIU Wen-Hao1,XU Chun-Xiang2 1(School of Information Science and Engineering,Hangzhou Normal University,Hangzhou 310012,China) 2(School of Computer Science and Engineering,University of Electronic Science and Technology,Chengdu 611731,China) |
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| Abstract: | A pairing-free certificateless two party key agreement scheme(CL-KA) is proposed.This work is able demonstrates all existing CL-KA schemes(except for Lippold's scheme) are insecure in the eCK model.The scheme is secure in the eCK model as long as each party has at least one uncompromised secret.The scheme has proven to be secure in the random oracle model(ROM),assuming that the computational Diffie-Hellman assumption hold even if the key generation centre(KGC) learns the ephemeral secrets of both parties,or... |
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| Keywords: | key agreement two party protocol certificateless without bilinear pairing |
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