| 抗自适应泄漏的基于身份加密方案 |
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| 引用本文： | 汤佳惠,朱艳琴,罗喜召.抗自适应泄漏的基于身份加密方案[J].通信学报,2012,33(7):90-95. |
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| 作者姓名： | 汤佳惠 朱艳琴 罗喜召 |
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| 作者单位： | 苏州大学计算机科学与技术学院,江苏苏州215006;苏州大学江苏省计算机信息处理技术重点实验室,江苏苏州215006 |
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| 基金项目： | 国家自然科学基金，苏州市应用基础研究计划基金，苏州市融合通信重点实验室基金 |
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| 摘 要： | 针对基于身份的加密(IBE)体制中缺乏有效抗自适应泄漏方案的问题,运用熵抗泄漏的基本思想,定义了自适应泄漏攻击下IBE的安全性;利用基于身份的散列证明系统(IB-HPS)和提取器,提出了抗自适应泄漏的IBE方案;并对其进行实例化,构建了基于q-TABDHE假设的抗自适应泄漏的IBE方案。安全性分析表明,设计的IBE方案是选择明文攻击安全的,它不仅能够有效地抵抗自适应泄漏,而且能够容忍较大的密钥泄漏量。
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| 关 键 词： | 自适应泄漏 基于身份的加密 熵抗泄漏 q-TABDHE假设 |
Identity-based encryption scheme against adaptive leakage |
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| TANG Jia-hui
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ZHU Yan-qin
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LUO Xi-zhao.Identity-based encryption scheme against adaptive leakage[J].Journal on Communications,2012,33(7):90-95. |
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| Authors: | TANG Jia-hui ZHU Yan-qin LUO Xi-zhao |
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| Affiliation: | 1,2(1.College of Computer Science and Technology,Soochow University,Soochow 215006,China;2.Province Key Laboratory for Computer Information Processing Technology,Soochow University,Soochow 215006,China) |
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| Abstract: | In allusion to the problem that scheme resilient to adaptive leakage was lacked in identity-based encryption,a notion of entropic leakage-resilient was used to define the security against adaptive leakage in IBE.Then by using identity-based hash proof system and extractors,an adaptive-leakage secure IBE scheme was proposed.And for instantiation,an IBE scheme against adaptive leakage based on q-TABDHE assumption was constructed.Security analysis shows that the scheme achieves chosen-plaintext attack security,and it can not only resist adaptive leakage effectively,but also tolerate more key leakage. |
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| Keywords: | adaptive leakage identity-based encryption entropic leakage-resilient q-TABDHE assumption |
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