摘要
结合门限密码体制、可验证的秘密共享和密钥拆分技术,提出了一种容错的RSA数字签名方案.该方案具有结构简单、安全性强等特点.在该方案中,即使实施数字签名的服务器组中有部分服务器被入侵者成功控制或出现系统部件故障,系统用户仍可以获得正确的数字签名,并能够根据服务器组的工作状态自适应签名策略,从而提高了系统效率,降低了系统通信量,具有很强的安全性和灵活性.
Any sufficiently complex computer system has vulnerabilities. It is safe to assume that the attackers either active or passive can exploit these vulnerabilities. These vulnerabilities can result in system failures too. This paper describes a RSA signature scheme which can tolerate these attacks or failures by means of combination of secret sharing scheme and the technique of secret share split. The scheme has simple structure with high security. The scheme ensures that the system can provide reliable signature services even if some servers misbehave caused by adversaries or failures in system. Furthermore, the analysis shows that the complex of the scheme may well be optimal, both operation and communication overhead are small.
出处
《扬州大学学报（自然科学版）》
CAS
CSCD
2004年第1期40-43,54,共5页
Journal of Yangzhou University：Natural Science Edition
基金
国家自然科学基金重大计划资助项目(90204012)
"863"高技术研究发展计划资助项目(2002AA143021)
