上海交通大学学报（英文版） ›› 2011, Vol. 16 ›› Issue (6): 658-662.doi: 10.1007/s12204-011-1207-3
An Efficient Threshold Key-Insulated Signature Scheme
CHEN Jian-hong (陈剑洪), LONG Yu (龙 宇), CHEN Ke-fei (陈克非) WANG Yong-tao (王永涛),LI Xiang-xue (李祥学)
- (1. Department of Computer Science and Engineering, Shanghai Jiaotong
University, Shanghai 200240, China;
2. School of Computer Engineering, Huaiyin Institute of Technology, Huai'an
223003, Jiangsu, China;
3. Shanghai Key Laboratory of Scalable Computing and System,
Shanghai Jiaotong University, Shanghai 200240, China;
4. Department of Computer Science and Technology, East China Normal University, Shanghai 200241, China)
-
收稿日期:2010-01-28出版日期:2011-12-30发布日期:2012-01-12 -
通讯作者:CHEN Jian-hong (陈剑洪) E-mail:chenjianhong_cis@sjtu.edu.cn
An Efficient Threshold Key-Insulated Signature Scheme
CHEN Jian-hong (陈剑洪), LONG Yu (龙 宇), CHEN Ke-fei (陈克非) WANG Yong-tao (王永涛),LI Xiang-xue (李祥学)
- (1. Department of Computer Science and Engineering, Shanghai Jiaotong
University, Shanghai 200240, China;
2. School of Computer Engineering, Huaiyin Institute of Technology, Huai'an
223003, Jiangsu, China;
3. Shanghai Key Laboratory of Scalable Computing and System,
Shanghai Jiaotong University, Shanghai 200240, China;
4. Department of Computer Science and Technology, East China Normal University, Shanghai 200241, China)
-
Received:2010-01-28Online:2011-12-30Published:2012-01-12 -
Contact:CHEN Jian-hong (陈剑洪) E-mail:chenjianhong_cis@sjtu.edu.cn
摘要： To tackle the key-exposure problem in signature settings,
this paper introduces a new cryptographic primitive named threshold key-insulated
signature (TKIS) and proposes a concrete TKIS scheme．For a TKIS system, at
least k out of n helpers are needed to update a user's temporary private key.
On the one hand, even if up to k-1 helpers are compromised in addition to the
exposure of any of temporary private keys, security of the non-exposed
periods is still assured. On the other hand, even if all the n helpers are
compromised, we can still ensure the security of all periods as long as none
of temporary private keys is exposed. Compared with traditional
key-insulated signature (KIS) schemes, the proposed TKIS scheme not only
greatly enhances the security of the system, but also provides flexibility
and efficiency.
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CHEN Jian-hong (陈剑洪), LONG Yu (龙 宇), CHEN Ke-fei (陈克非) WANG Yong-tao. An Efficient Threshold Key-Insulated Signature Scheme[J]. 上海交通大学学报（英文版）, 2011, 16(6): 658-662.
CHEN Jian-hong (陈剑洪), LONG Yu (龙 宇), CHEN Ke-fei (陈克非) WANG Yong-tao (王永涛),LI Xiang-xue (李祥学). An Efficient Threshold Key-Insulated Signature Scheme[J]. Journal of shanghai Jiaotong University (Science), 2011, 16(6): 658-662.
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