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Research on a Multi-level Threshold Proxy Signature Scheme
Author(s): WANG Jian-dong Song chao 1.Department of Information Engineering, Shijiazhuang University of Economics, Shijiazhuang Heibei 050031, P.R.China 2.Universuty of electronic science and techndogy of china
Pages: 42-
45
Year: 2011
Issue:
4
Journal: Beijing Electronics
Keyword: 门限代理签名; 多级门限; 代理签名; 合谋攻击;
Abstract: 已有的(t,n)门限代理签名方案,只能实现在同一级门限下的代理签名。本文利用离散对数和大数分解问题的困难性,提出一种多级门限代理签名方案。该方案能在各代理签名人持有密钥不变的情况下,根据待签名文件的安全性要求,调整门限值,实现在多级门限下的代理签名。该方案具有安全性高,灵活性强的特点。
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