| Parallel Key-insulated Signature： Framework and Construction |
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| 引用本文： | 翁健,陈克非,李祥学,刘胜利,邱卫东.Parallel Key-insulated Signature： Framework and Construction[J].上海交通大学学报(英文版),2008,13(1):6-11. |
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| 作者姓名： | 翁健 陈克非 李祥学 刘胜利 邱卫东 |
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| 作者单位： | [1]Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China [2]School of Information Security Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| 摘 要： | To deal with the key-exposure problem in signature systems, a new framework named parallel key-insulated signature （PKIS） was introduced, and a concrete PKIS scheme was proposed. Compared with traditional key-insulated signature （KIS） schemes, the proposed PKIS scheme allows a frequent updating for temporary secret keys without increasing the risk of helper key-exposure. Moreover, the proposed PKIS scheme does not collapse even if some （not all） of the helper keys and some of the temporary secret keys are simultaneously exposed. As a result, the security of the PKIS scheme is greatly enhanced, and the damage caused by key-exposure is successfully minimized.
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| 关 键 词： | 结构特征 设计方法 通信系统 信号 |
| 收稿时间： | 2006-09-11 |
Parallel key-insulated signature: Framework and construction |
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| Jian Weng,Ke-fei Chen,Xiang-xue Li,Sheng-li Liu,Wei-dong Qiu.Parallel key-insulated signature: Framework and construction[J].Journal of Shanghai Jiaotong university,2008,13(1):6-11. |
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| Authors: | Jian Weng Ke-fei Chen Xiang-xue Li Sheng-li Liu Wei-dong Qiu |
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| Institution: | 1. Department of Computer Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China
2. School of Information Security Engineering, Shanghai Jiaotong University, Shanghai 200240, China |
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| Abstract: | To deal with the key-exposure problem in signature systems, a new framework named parallel key-insulated signature (PKIS) was introduced, and a concrete PKIS scheme was proposed. Compared with traditional key-insulated signature (KIS) schemes, the proposed PKIS scheme allows a frequent updating for temporary secret keys without increasing the risk of helper key-exposure. Moreover, the proposed PKIS scheme does not collapse even if some (not all) of the helper keys and some of the temporary secret keys are simulta-neously exposed. As a result, the security of the PKIS scheme is greatly enhanced, and the damage caused by key-exposure is successfully minimized. |
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| Keywords: | key-exposure parallel key-insulation signature bilinear pairings random oracle |
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