Cryptanalysis and improvement of a proxy multisignature scheme(一类代理多重签名方案的密码学分析与改进)
2001年,傅晓彤等提出了一种新的代理多重签名体制,即多个原始签名人分别将签名权力委托给各自的代理签名人,再由这些代理签名人联合生成代表所有原始签名人的数字签名.然而,周红生等(2004)指出他们的方案不存在抗抵赖性以及代理签名者能滥用代理签名权的缺陷,同时给出了一个改进方案.本文指出,周红生等的方案也是不安全的,任一原始签名人或任一代理人都能生成有效的代理多重签名,而且可以任意修改代理签名的期限.为克服他们的安全性弱点,给出了一个改进的方案....
Main Author: | XIEQi(谢琪) |
---|---|
Format: | Article |
Language: | zho |
Published: |
Zhejiang University Press
2006-03-01
|
Series: | Zhejiang Daxue xuebao. Lixue ban |
Subjects: | |
Online Access: | https://doi.org/zjup/1008-9497.2006.33.2.139-141 |
Similar Items
-
Non-repudiation signature with message recovery for specified recipient(指定接收者恢复消息的抗抵赖数字签名体制)
by: XIEQi(谢琪), et al.
Published: (2005-07-01) -
Cryptanalysis and improvement of some signature schemes with specified receiver(一些指定接收者的签名方案的分析与改进)
by: XIEQi(谢琪)
Published: (2008-09-01) -
A secure and efficient directed threshold signature scheme(一个安全有效的有向门限签名方案)
by: SHENZhong-hua(沈忠华), et al.
Published: (2006-07-01) -
Cryptanalysis of one-off blind public key based on ID(基于ID的一次性盲公钥的密码学分析)
by: XIEQi(谢琪), et al.
Published: (2005-11-01) -
Security analysis of a signature scheme with message recovery(一个具有消息恢复的签名方案的安全性分析)
by: CAOTian-jie(曹天杰), et al.
Published: (2006-07-01)