| 无证书抗私钥泄漏的加密方案 |
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| 引用本文： | 于启红,李继国.无证书抗私钥泄漏的加密方案[J].计算机应用,2014,34(5):1292-1295. |
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| 作者姓名： | 于启红 李继国 |
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| 作者单位： | 1. 宿迁学院 计算机系，江苏 宿迁 223800
2. 河海大学 计算机与信息学院，南京 210098 |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 针对大量的边信道攻击和冷启动攻击泄漏密码系统的秘密信息进而导致传统密码方案不安全的问题，提出了一种能在私钥泄漏情况下保持安全的无证书加密方案。基于q-ABDHE困难问题假设，从理论上证明了方案的安全性；通过提取器的使用实现了抗泄漏特性。理论分析表明提出的方案容许私钥的相对泄漏率可以达到1/8。
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| 关 键 词： | 无证书加密 抗泄漏 双线性映射 安全性 |
| 收稿时间： | 2013-10-29 |
| 修稿时间： | 2013-12-21 |
Encryption scheme of certificateless and leakage-resilient private key |
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| YU Qihong LI Jiguo.Encryption scheme of certificateless and leakage-resilient private key[J].journal of Computer Applications,2014,34(5):1292-1295. |
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| Authors: | YU Qihong LI Jiguo |
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| Affiliation: | 1. Department of Computer, Suqian College, Suqian Jiangsu 223800, China;
2. College of Computer and Information, Hohai University, Nanjing Jiangsu 210098, China |
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| Abstract: | A lot of side channel attacks and cold boot attacks can leak secret information of cryptographic systems and destroy the security of traditional cryptographic schemes. This paper presented a certificateless encryption scheme which can resist the private key leakage. Based on the q-ABDHE (Augmented Bilinear Diffie-Hellman Exponent) hypothesis, the security of the scheme was proved. The leakage-resilient property was obtained via extractor. The leakage-resilient performance was analyzed. The theoretical analyses show that the relative leakage rate of private key can reach 1/8. |
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