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《ACTA ELECTRONICA SINICA》 2000-10
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An Improved Reparable Key Distribution Protocol

LI Hu,CHEN Huang hai,ZHU Hong wen (Department of Electronic Engineering,Shanghai Jiao Tong University,Shanghai 200030,China)  
Hwang and Ku introduced a concept of reparability feature into key distribution protocol.In this paper,the key distribution protocol,proposed by Hwang and Ku,is analyzed.This paper also presentes security problems in Hwang and Ku′s protocol,and furthermore,the argument on whether the protocol has the perfect reparability feature.So,an improved reparable key distribution protocol is proposed in this paper,which solves these security problems.A method,hiding the duplicated event markers,is also proposed and is applied in the protocol to successfully solve the perfect reparability problem.
【CateGory Index】: TN9181
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