计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (10): 104-105.
• 网络、通信、安全 • 上一篇 下一篇
田志刚,鲍皖苏
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TIAN Zhi-gang,BAO Wan-su
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摘要: 在一个(t,n)门限代理签名方案中,任何t个成员组成的集合可以代表原始签名人进行代理签名,而任何少于t个成员的集合都不能进行代理签名。针对合谋攻击提出了一个安全的(t,n)门限代理签名方案。合谋攻击是指在不知道任何有效的门限代理签名的情况下,恶意代理成员人数大于或等于门限值时,他们能合谋重新构造代理群的秘密参数,从而可以伪造其他代理成员的签名。新方案不仅能满足门限代理签名的性质,而且能抵抗合谋攻击。
关键词: (t, n)门限代理签名, 可信中心, 合谋攻击
Abstract: In a(t,n) threshold proxy signature,any set of t members who present the original singer can issue a signature while any set of less than t members can not issue a signature at all.A secure(t,n) threshold proxy signature scheme is proposed aiming at conspiracy attack.That is:any t or more malicious proxy signatures may work together to reconstruct the secret keys of other members in proxy group,consequently they can impersonate some other proxy signers to generate a valid threshold proxy signature.The new scheme can not only satisfy the properties of the threshold proxy signature,but also withstand the conspiracy attack.
Key words: (t, n) threshold proxy signature, trusted party, conspiracy attack
田志刚,鲍皖苏. 一个安全的(t,n)门限代理签名[J]. 计算机工程与应用, 2008, 44(10): 104-105.
TIAN Zhi-gang,BAO Wan-su. Secure(t,n) threshold proxy signature scheme[J]. Computer Engineering and Applications, 2008, 44(10): 104-105.
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http://cea.ceaj.org/CN/Y2008/V44/I10/104