| 摘要: |
| 如何应对基于身份的签名系统中密钥泄漏的问题,是一项非常有意义的工作.为了处理这一问题,利用Dodis等人的密钥隔离机制,提出了一种基于身份的密钥隔离签名.所提出出的签名方案具有两个显著的特点:(i) 满足强密钥隔离安全性;(ii) 其安全性证明无须借助随机预言机模型. |
| 关键词: 密钥隔离 基于身份的签名 密钥泄漏 标准模型 |
| DOI： |
| 分类号: |
| 基金项目:Supported by the National Natural Science Foundation of China under Grant Nos.60573030, 60673077 (国家自然科学基金) |
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| Identity-Based Strong Key-Insulated Signature Without Random Oracles |
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WENG Jian,CHEN Ke-Fei,LIU Sheng-Li,LI Xiang-Xue
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| Abstract: |
| It is a worthwhile challenge to deal with the key-exposure problem in identity-based signatures. To deal with this problem, this paper adopts Dodis, et al.'s key-insulation mechanism to identity-based signature scenarios, and proposes an identity-based key-insulated signature scheme. The proposed scheme enjoys two attractive features: (i) it is strong key-insulated; (ii) it is provably secure without random oracles. |
| Key words: key-insulated identity-based signature key-exposure standard model |
