CAJ | 학술논문

在门限数字签名的生成过程中,每个签名者的作用均等,一旦签名产生纠纷,责任便不明确.为解决上述问题,提出一个有指定责任者的门限数字签名方案.在该方案的门限签名生成阶段,有且只有一个签名者作为主要责任人,并由他发起该次签名,使事后的纠纷有明确的负责人.该方案还能防止签名责任者在门限签名的产生阶段实施替换消息攻击及伪造攻击,不需要额外的签名合成者和安全信道.
재문한수자첨명적생성과정중,매개첨명자적작용균등,일단첨명산생규분,책임편불명학.위해결상술문제,제출일개유지정책임자적문한수자첨명방안.재해방안적문한첨명생성계단,유차지유일개첨명자작위주요책임인,병유타발기해차첨명,사사후적규분유명학적부책인.해방안환능방지첨명책임자재문한첨명적산생계단실시체환소식공격급위조공격,불수요액외적첨명합성자화안전신도.
In the stage of threshold digital signature generation, each signer's work is equality. So there is not a defined person in charge, when the signature arouses dissension. This paper proposes a new threshold signature scheme that overcomes the above weakness. There is one and only one signer in charge of the signature, who mobilizes the threshold signature in the origination stage. The signer should response for the possible dissension. The scheme can prevent a dishonest of signing group from changing the signing massage to another of his choice while he is cooperating with other signers to produce a threshoLd signature.