Parallel Key-insulated Signature: Framework and Construction

被引：0
|
作者：
翁健 [1 ]
陈克非 [1 ]
李祥学 [2 ]
刘胜利 [1 ]
邱卫东 [2 ]
机构：
[1] Department of Computer Science and Engineering, Shanghai Jiaotong University
[2] School of Information Security Engineering, Shanghai Jiaotong University
来源：
Journal of Shanghai Jiaotong University(Science) | 2008年 / 01期
基金：
中国国家自然科学基金;
关键词：
key-exposure; parallel key-insulation; signature; bilinear pairings; random oracle;
D O I：
暂无
中图分类号：
TN918 [通信保密与通信安全];
学科分类号：
0839 ; 1402 ;
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.
引用
收藏
页码：6 / 11
页数：6
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