Forward-Secure Digital Signature Scheme with Tamper Evidence  

作　　者：JIANG Han XU Qiuliang LIN Fengbo 

机构地区：[1]School of Computer Science and Technology, ShandongUniversity, Jinan 250061, Shandong, China

出　　处：《Wuhan University Journal of Natural Sciences》2008年第5期582-586,共5页武汉大学学报（自然科学英文版）

基　　金：the Natural Science Foundation of Shandong Province (Y2007G37)

摘　　要：Based on the definition of tamper evidence, the authors define a new notion of tamper evidence forward secure signature scheme （TE-FSig）, and propose a general method to build a TE-FSig scheme. Based on this method, they also give out a concrete instance. A TE-FSig scheme is constructed by the standard signature scheme, forward secures signature scheme and the aggregate signature scheme. It has an additional property of tamper evidence besides the property of forward secure, which can detect the time period when the key is exposed. In the standard model, the scheme constructed in the paper is proved to satisfy the prop- erties of forward secure, strong forward tamper-evidence secure, and strongly unforgeable under the chosen-message attack.Based on the definition of tamper evidence, the authors define a new notion of tamper evidence forward secure signature scheme （TE-FSig）, and propose a general method to build a TE-FSig scheme. Based on this method, they also give out a concrete instance. A TE-FSig scheme is constructed by the standard signature scheme, forward secures signature scheme and the aggregate signature scheme. It has an additional property of tamper evidence besides the property of forward secure, which can detect the time period when the key is exposed. In the standard model, the scheme constructed in the paper is proved to satisfy the prop- erties of forward secure, strong forward tamper-evidence secure, and strongly unforgeable under the chosen-message attack.

关 键 词：tamper evidence forward secure bilinear map aggregate signature strongly unforgeable strong forward tamper-evidence secure 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]