陕西师范大学学报：自然科学版
陝西師範大學學報：自然科學版
협서사범대학학보：자연과학판
Journal of Shaanxi Normal University： Nat Sci Ed
2012年
1期
6-8
,共3页
前向安全性%指定接收者%消息恢复%部分盲签名
前嚮安全性%指定接收者%消息恢複%部分盲籤名
전향안전성%지정접수자%소식회복%부분맹첨명
forward security%designated receiver%message recovery%partially blind signature
在指定接收者恢复消息签名方案的基础上加入了前向安全性,提出一种新的部分盲签名方案.新方案能够减少通信量,避免因密钥的泄露而导致以前的所有签名无效,只有指定的接收者才能恢复原始消息,进一步加强了消息的隐秘性.新方案中签名发起人和签名者合作完成签名,签名密钥按周期更新,在签名过程中加入了最终可恢复消息的接收者的信息.安全性分析表明新方案满足部分盲性、前向安全性和不可伪造性等安全性要求.
在指定接收者恢複消息籤名方案的基礎上加入瞭前嚮安全性,提齣一種新的部分盲籤名方案.新方案能夠減少通信量,避免因密鑰的洩露而導緻以前的所有籤名無效,隻有指定的接收者纔能恢複原始消息,進一步加彊瞭消息的隱祕性.新方案中籤名髮起人和籤名者閤作完成籤名,籤名密鑰按週期更新,在籤名過程中加入瞭最終可恢複消息的接收者的信息.安全性分析錶明新方案滿足部分盲性、前嚮安全性和不可偽造性等安全性要求.
재지정접수자회복소식첨명방안적기출상가입료전향안전성,제출일충신적부분맹첨명방안.신방안능구감소통신량,피면인밀약적설로이도치이전적소유첨명무효,지유지정적접수자재능회복원시소식,진일보가강료소식적은비성.신방안중첨명발기인화첨명자합작완성첨명,첨명밀약안주기경신,재첨명과정중가입료최종가회복소식적접수자적신식.안전성분석표명신방안만족부분맹성、전향안전성화불가위조성등안전성요구.
Based on designated receiver signature scheme with message recovery,a new partially blind signature scheme is proposed with forward security property.In the new scheme,the communication cost is lower and it can avoid all the signatures become invalid because of the signature keys of signers are leaked.Moreover,only the designated receiver can recover the original message and can strength the security of the message.In the scheme the signature sponsor and the singer cooperate to sign,and the signature key is updated in every period,the information of receiver＇s who can recover the message is inserted in the signature process.An analysis of the security of the proposed scheme shows that it satisfies the partial blindness,forward security,unforgeability and so on.
