| 标准模型下基于身份的强不可伪造签名方案 |
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| 引用本文： | 吴青,张乐友.标准模型下基于身份的强不可伪造签名方案[J].北京邮电大学学报,2011,34(3):71-74. |
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| 作者姓名： | 吴青 张乐友 |
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| 作者单位： | 西安邮电学院自动化学院,西安,710121;西安电子科技大学数学系,西安,710071 |
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| 基金项目： | 国家自然科学基金项目(61075055,60974082); 陕西省自然科学基金项目(2010JQ8004); 西安邮电学院青年基金项目(110-0402) |
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| 摘 要： | 为了克服已有方案安全性依赖强、签名长度长、计算代价大等缺陷，提出了一种可将任意基于身份的具有分〖JP9〗割-〖JP〗可模拟的存在性不可伪造的方案转化为强不可伪造签名方案的转化方案；在Paterson方案的基础上设计了标准模型下一种有效的基于身份的强不可伪造签名. 在计算Diffie Hellman困难问题的假设下，证明该方案在适应性选择消息攻击下是强存在性不可伪造的. 与已有基于身份的强不可伪造签名方案相比，该方案签名长度短，计算量小，且有更强的安全性.
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| 关 键 词： | 强不可伪造签名 基于身份签名 标准模型 可证明安全 |
| 收稿时间： | 2010-08-26 |
New Strongly Unforgeable Identity-Based Signature Scheme in the Standard Model |
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| WU Qing,ZHANG Le-you.New Strongly Unforgeable Identity-Based Signature Scheme in the Standard Model[J].Journal of Beijing University of Posts and Telecommunications,2011,34(3):71-74. |
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| Authors: | WU Qing ZHANG Le-you |
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| Affiliation: | WU Qing1,ZHANG Le-you2(1.School of Automation,Xi'an Institute of Posts and Telecommunications,Xi'an 710121,China,2.Department of Mathematics,Xidian University,Xi'an 710071,China) |
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| Abstract: | To overcome the shortcomings of the existing schemes such as strong hardness assumption,long signatures and high compution cost,a new transformation is proposed.It can convert any simulative-partitioned identity-based signature with existentially unforgeable security to a strongly unforgeable signature.And a concrete strongly unforgeable identity-based signature based on Paterson's scheme is constructed in the standard model.Under computational Diffie-Hellman assumption,the proposed signature scheme is prov... |
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| Keywords: | strongly unforgeable signature identity-based signature standard model provable security |
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