摘要
提出了一种可追查身份的门限签名方案,该方案中的参与方包括可信中心PKG、密钥分发者Dealer、合成签名者SC(Signature Combiner)以及n个成员(他们中的t个成员可以参加(t,n)门限签名)。在新方案中,可追查身份信息包括Dealer和成员身份信息,需要注意的是这些成员参加了门限签名。密钥分发者Dealer可以控制部分签名的产生,他很容易撤销成员的签名权力;可以验证部分签名是否是某成员代替密钥分发者Dealer而签发的;而且,可以追查出参加门限签名的成员的身份信息。
The author presented a threshold signature scheme with tracking identity.In this scheme,there are a trusted center named as PKG,a secret dealer,a signature combiner and n members（t ones of these members can take part in（t,n） threshold signature）.The traceable identities information not only include information of dealer＇s identity but also do that of some members identities.We noted that these members take part in threshold signature together.The dealer can control production of partial signature and easily revoke the power of member＇s signature.We can verify whether a partial signature is made by some member substituting dealer.Moreover,we can also track the identities of those members who participate in threshold signature.
出处
《计算机科学》
CSCD
北大核心
2011年第10期123-126,共4页
Computer Science
基金
国家自然科学基金(60903175
60703048)
湖北省自然科学基金(2009CBD307
2008CDB352)资助
关键词
门限签名
秘密共享
签名
Threshold signature
Secret sharing
Signature
