摘要
Proactive security provides a method for maintaining the overall security of a system,even when individual components are repeatedly broken into and controlled by an attacker. Proactive security is a non-trivial extension of (t＋1,n)-threshold cryptosystems,where shares are periodically renewed (without changing the secret) in such a way that information gained by the adversary in one time period is useless for attacking the secret after the shares are renewed. In this paper,we describe the proactive approach and review some basic technologies. We also report the problems need to be study.
Proactive security provides a method for maintaining the overall security of a system,even when individual components are repeatedly broken into and controlled by an attacker. Proactive security is a non-trivial extension of (t + 1 ,n)-threshold cryptosystems,where shares are periodically renewed (without changing the secret) in such a way that information gained by the adversary in one time period is useless for attacking the secret after the shares are renewed. In this paper, we describe the proactive approach and review some basic technologies. We also report the problems need to be study.
出处
《计算机科学》
CSCD
北大核心
2003年第6期27-30,共4页
Computer Science
基金
863-306-ZD-02资助
关键词
主动安全
门限密码学
数字签名
计算机网络
网络安全
Proactive security, Threshold cryptographic, Proactive secret sharing, Adaptive-secure
