| 对一个格基身份签名方案的分析和改进 |
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| 引用本文： | 杨春丽,闫建华,郑世慧,王励成,杨 榆.对一个格基身份签名方案的分析和改进[J].通信学报,2015,36(5):104-111. |
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| 作者姓名： | 杨春丽 闫建华 郑世慧 王励成 杨 榆 |
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| 作者单位： | 1. 北京邮电大学 信息安全中心，北京 100876；2. 北京邮电大学 灾备技术国家工程实验室，北京 100876；
3. 鲁东大学 信息与电气工程学院，山东 烟台 264025 |
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| 基金项目： | 国家自然科学基金资助项目(61121061, 61202082, 61370194)；国家自然科学基金中日韩A3前瞻计划基金资助项目(61161140320)；中央高校基本科研业务费专项基金资助项目(BUPT2012RC0219, BUPT2013RC0311, BUPT2013RC0308) |
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| 摘 要： | 首先分析了Liu等人2013年给出的一个格基身份签名（IBS）方案在安全性证明中存在的问题，进而说明方案的证明达不到作者所宣称的选择身份和自适应选择消息攻击下的强不可伪造性。其次，使用Boyen10签名技术（PKC 2010）对此方案中签名算法进行改进，并在标准模型下证明了改进方案在选择身份和自适应选择消息攻击下具有强不可伪造性的安全性质。另外，对比分析了改进的方案和其他IBS方案的效率和安全性。
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| 关 键 词： | 基于身份的签名 强不可伪造 标准模型 格 |
| 收稿时间： | 7/1/2014 12:00:00 AM |
Analysis and improvement of an identity-based
signature scheme from lattices |
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| ANGChun-li Y,ANJian-hua Y,HENGShi-hui Z,ANGLi-cheng W,ANGYu Y.Analysis and improvement of an identity-based
signature scheme from lattices[J].Journal on Communications,2015,36(5):104-111. |
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| Authors: | ANGChun-li Y ANJian-hua Y HENGShi-hui Z ANGLi-cheng W ANGYu Y |
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| Affiliation: | 1. Information Security Research Center,Beijing University of Posts and Telecommunications,Beijing 100876,China;2. National Engineering Laboratory for Disaster Backup and Recovery,Beijing University of Posts and Telecommunications,Beijing 100876,China;3. School of Information and Electric Engineering,Ludong University,Yantai 264025,China |
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| Abstract: | Liu et al proposed an identity-based signature from lattices in 2013, and proved that it can achieve strong unforgeability in the standard model. Through analysis, the security proof of this scheme has some defect, and then show that the scheme cannot prove the strong unforgeability under selective identity and adaptive chosen-message attacks. Then, using Boyen signing technique (PKC 2010) inpoves the signing algorithm, and proves the strong unforgeability under selective identity and adaptive chosen-message attacks (SU-sID-CMA) in the standard model. In addition, it compares the efficiency and security of the scheme and the other identity-based signatures from lattices. |
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| Keywords: | identity-based signature strong unforgeability standard model lattices |
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