摘要
前向安全是数字签名方案的一个重要的方面。现在已经提出了许多前向安全的数字签名方案,但前向安全的代理签名方案到目前为止并不多。提出了一个前向安全的基于身份的代理签名方案,方案的安全参数与总的时间周期数量无关可以在保证代理签名者私钥长度和公钥保持不变的条件下无限制的进行代理私钥更新。由于双线性配对的使用,方案具有短签名和短密钥的特点。最后给出了代理签名方案的安全性分析。
The forward secure property is important in digital signature schemes. Many schemes have been proposed for the forward secure signature. Among them, only a few is proposed for the forward secure proxy signature. A forward secure ID-based proxy signature scheme is proposed. The scheme requires the general security parameters only independent to the total number of time periods. The scheme can perform key update for unlimited time periods while maintaining sizes ofkeys and signature fixed. For using bilinear pairings, the scheme possesses the characteristic of short signature and short key. At last. the security of this scheme is analyzed
出处
《计算机工程与设计》
CSCD
北大核心
2007年第21期5103-5104,5326,共3页
Computer Engineering and Design
基金
国家973重点基础研究发展计划基金项目(G1999035802)
国家863高技术研究发展计划基金项目(2001AA141120)
