计算机工程与应用 ›› 2008, Vol. 44 ›› Issue (13): 120-121.
• 网络、通信、安全 • 上一篇 下一篇
黄文平1,高茂庭2
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HUANG Wen-ping1,GAO Mao-ting2
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摘要: 对两个不需要安全信道的代理签名方案进行了分析,发现它们并不满足不可伪造性。在[4]中不能抵抗原始签名人改变攻击,在[5]中原始签名人可以伪造一个有效的代理签名。提出一个改进的强代理签名方案,新方案在不增加计算复杂性的前提下,保证了签名的安全性,同时代理授权过程中仍然保持不需要安全信道。
关键词: 数字签名, 代理签名, 伪造攻击
Abstract: This paper analyzes two public channel proxy signature schemes,we point out that both schemes are insecure;the scheme of [4] can’t resist the change original signer attack.In the scheme of [5],original signer can successfully forge a valid proxy signature scheme.A new public channel signature scheme is proposed.Analysis shows that the proposed scheme satisfies all security properties of the strong proxy signature scheme.
Key words: digital signature, proxy signature, forgery attack
黄文平1,高茂庭2. 一些代理签名方案的进一步改进[J]. 计算机工程与应用, 2008, 44(13): 120-121.
HUANG Wen-ping1,GAO Mao-ting2. Further improvement of some proxy signature schemes[J]. Computer Engineering and Applications, 2008, 44(13): 120-121.
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