| 标准模型下基于身份的具有部分消息恢复功能的签名方案 |
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| 引用本文： | 刘振华,张襄松,田绪安,胡予濮.标准模型下基于身份的具有部分消息恢复功能的签名方案[J].北京工业大学学报,2010,36(5). |
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| 作者姓名： | 刘振华 张襄松 田绪安 胡予濮 |
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| 作者单位： | 西安电子科技大学,应用数学系,西安710071;西安通信学院,计算机教研室,西安710106;西安电子科技大学,计算机网络与信息安全教育部重点实验室,西安710071 |
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| 基金项目： | 国家自然科学基金资助，国家自然科学青年基金资助，国家"九七三"重点发展计划基金资助 |
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| 摘 要： | 利用Gentry的基于身份的加密方案及其变体,设计了具有部分消息恢复功能的基于身份签名方案,缩短了消息及其签名的总长度,同时,截断的消息能在合理时间内被恢复出来.在标准模型下,证明了该方案在自适应选择消息攻击下存在性不可伪造规约为q-Strong Diffie-Hellman困难假设.与现有的标准模型下基于身份的签名方案相比,该方案缩短了消息及其签名的总长度,适用于带宽受限的环境.
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| 关 键 词： | 密码 签名 消息恢复 标准模型 可证明安全性 |
Identity-based Signature Scheme with Partial Message Recovery in the Standard Model |
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| LIU Zhen-hua,ZHANG Xiang-song,TIAN Xu-an,HU Yu-pu.Identity-based Signature Scheme with Partial Message Recovery in the Standard Model[J].Journal of Beijing Polytechnic University,2010,36(5). |
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| Authors: | LIU Zhen-hua ZHANG Xiang-song TIAN Xu-an HU Yu-pu |
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| Affiliation: | LIU Zhen-hua1,ZHANG Xiang-song1,TIAN Xu-an2,HU Yu-pu3 (1.Applied Mathematics Department,Xidian University,Xi'an 710071,China,2.Teaching-research Section of Computer Science,Xi'an Communications Institute,Xi'an 710106,3.Key Laboratory of Computer Networks & Information Security of Ministry of Education,China) |
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| Abstract: | Based on Gentry's identity based encryption scheme and its variants,an identity-based signature scheme with partial message recovery is proposed.In this scheme,the total length of the original message and the appended signature is shortened,and the discarded message is recovered in reasonable time.The proposed scheme is proven to be existentially unforgeable under adaptive chosen message attacks in the standard model and its security depends on q-strong Diffie-Hellman intractability assumption.Compared with... |
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| Keywords: | cryptography signature message recovery standard model provable security |
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