基于门限哈希函数的有效代理签名机制的设计与研究

Design and Research of Efficient Proxy Signatures Based on Trapdoor Hash Functions

当今的代理签名技术是在原有签名机制上的改进,无法提供强大的安全保证机制.对比提出了一种基于离散对数的门限哈希函数的方法来构建安全代理签名机制,并提供了详细的安全和性能分析.分析结果显示该机制安全性高、性能稳定.

Unfortunately,most recent constructions of proxy signatures only improve on minor weaknesses of previously built schemes,and can not deliver formal security guarantees.In this study,the paper proposes a technique to construct provably secure proxy signature scheme using trapdoor hash functions and discrete log,then provides the analyses of security and performance.The results show that this proposed scheme achieves superior performance and high security.