标题: | 有安全性往前递移特性的代理签章方法 A Proxy Signature Scheme with Forward Secure Property |
作者: | 林子馨 Tzu-Shin Lin 叶义雄 Yi-Shiung Yeh 资讯科学与工程研究所 |
关键字: | 代理签章;强代理签章;安全性向前递移特性;proxy signature;strong proxy signature;forward secure property |
公开日期: | 2002 |
摘要: | 目前,电子交易日渐盛行;此外,任务的指派、机密文件的传送…等也逐渐利用网际网路来完成,所以,在电脑世界里,电子签章的使用是不可或缺的。代理签章的方法首先在1996提出,电子签章的使用者可以用代理签章的方法,来授权他的签章能力给代理签章者。而另一方面,私密金钥被其他入侵者得到是电子签章在安全上最大的威胁,这是因为若私密金钥被被外人得知,利用此金钥所签的所有电子签章都无法再信任,不管该签章是否在金钥泄密前就产生。在“安全性向前递移的电子签章”这篇论文中所提到的观念 – “安全性向前递移”是不错的解决方法。因此,在本篇论文提出了一个新的代理签章方法,并且利用这个代理签章法再结合安全性向前递移的观念,创造出另一个更安全的代理签章方法。 Nowadays, an electronic transaction is more and more popular. Besides, not only designing a job but also sending secret document is through the Internet. Thus, the digital signature scheme is indispensable to the electronic would. Proxy signature scheme was proposed in 1996, which makes original signers be able to delegate his digital signature signing capability to a proxy signer. On the other way, the greatest problem against the security of a digital signature scheme is exposure of the secret key, because we cannot trust all signatures singed by this key even the signature was signed before the key is compromised. Forward secure, which is proposed in ”A Forward-Secure Digital Signature Scheme”, is a better solution to reduce the damage. This paper proposes a new proxy signature scheme and then combines forward secure property to this proxy signature to make it more invulnerable. |
URI: | http://140.113.39.130/cdrfb3/record/nctu/#NT910392009 http://hdl.handle.net/11536/70080 |
显示于类别: | Thesis |