Proxy-protected signature secure against the undelegated proxy signature attack

被引：18
|
作者：
Liu, Yu-Chuan
Wen, Hsiang-An
Lin, Chun-Li
Hwang, Tzonelih
机构：
[1] Shu Te Univ, Dept Comp Sci & Informat Engn, Yen Chau, Kaohsiung, Taiwan
[2] Natl Cheng Kung Univ, Dept Comp Sci & Informat Engn, Tainan 70101, Taiwan
[3] Leader Univ, Dept Comp Sci & Informat Engn, Tainan, Taiwan
来源：
COMPUTERS & ELECTRICAL ENGINEERING | 2007年 / 33卷 / 03期
关键词：
digital signature; proxy signature; proxy-protected; integer factorization; RSA;
D O I：
10.1016/j.compeleceng.2006.11.004
中图分类号：
TP3 [计算技术、计算机技术];
学科分类号：
0812 ;
摘要：
The proxy signature scheme enables an original signer to delegate his/her signing capability to a designated proxy signer, thereby the proxy signer can sign messages on behalf of the original signer. Recently, Zhou et al. proposed two proxy-protected signature schemes. One is based on the RSA problem and the other is based on the integer factorization problem. In this paper, however, we point out that Zhou et al.'s schemes are insecure against undelegated proxy signature attack because any user without the delegation of the original signer can generate a valid proxy signature. To solve this problem, an improved scheme is proposed and its security is analyzed. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：177 / 185
页数：9
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