Strong key-insulated signature in the standard model
Strong key-insulated signature in the standard model
复制标题
DOI：
10.1007/s12204-010-1064-5
复制
发表时间：
2010-11
影响因子：
--
通讯作者：
Zhongmei Wan;Xuejia Lai;J. Weng;Shengli Liu;Yu Long;Xuan Hong
中科院分区：
文献类型：
--
作者：
Zhongmei Wan;Xuejia Lai;J. Weng;Shengli Liu;Yu Long;Xuan Hong
在标准模型中唯一可以证明安全的密钥隔离签名（KIS）是基于使用双重签名的方法。也就是说，该方案需要两个签名：一个是使用主密钥的签名，另一个是使用签名者的秘密密钥的签名。这种民间建筑方法导致了低效的方案。因此，期望设计一种有效的KIS方案。我们提出了第一个方案与这样的建设。我们的构造来自于沃茨签名方案的一些变体。它计算效率高，签名短。基于标准模型下计算Diffie-Hellman（CDH）问题的困难性，该方案是可证明安全的.
The only known construction of key-insulated signature (KIS) that can be proven secure in the standard model is based on the approach of using double signing. That is, the scheme requires two signatures: a signature with a master key and a signature with the signer’s secret key. This folklore construction method leads to an inefficient scheme. Therefore it is desirable to devise an efficient KIS scheme. We present the first scheme with such a construction. Our construction derives from some variations of the Waters’ signature scheme. It is computationally efficient and the signatures are short. The scheme is provably secure based on the difficulty of computational Diffie-Hellman (CDH) problem in the standard model.