一种可定期更新的多秘密共享方案  

Periodically renewed multi-secret sharing scheme

作　　者：杨曦[1] 侯整风[1] 

机构地区：[1]合肥工业大学计算机与信息学院,合肥230009

出　　处：《计算机应用》2007年第7期1609-1610,1618,共3页journal of Computer Applications

摘　　要：基于椭圆曲线密码体制,在PANG-WANG(t,n)多秘密共享方案的基础上,提出了一种新的多重秘密共享方案。在该方案中,参与者能自主选择子密钥;且参与者的秘密份额能定期更新。与PANG-WANG方案相比,该方案解决了原方案子密钥必须由庄家发放、秘密份额不可更新等问题,具有较好的灵活性和更高的安全性。A new multi-secret sharing scheme was proposed based on elliptic curve cryptography and PANG-WNAG＇s （t, n） multi-secret sharing scheme. The scheme has properties as follows： （1） participants can choose sub-secrets by themselves; （2） shadows of every participant can be renewed periodically. Compared with PANG-WANG＇s scheme, this scheme compensates for the disadvantages of the original scheme such as sub-secrets must be chosen by dealer and shadows cannot be renewed, so this scheme has better flexibility and higher security.

关 键 词：(T N)门限 多重秘密共享 秘密份额 子密钥 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]