摘要
UC(通用可组合)安全计算的存在性需要刻画某种基础假定的信任模型的支持。针对对于UC安全计算的信任模型研究甚少的现状,从使用信任模型的原因入手,分析比较了国外现有的信任模型,指出了各自的优势和存在的问题。在此基础上,提出了一种公钥基础设施风格的双陷门分离的信任模型DBT模型,作为实验在DBT模型中实现了UC安全的承诺协议。实验结果表明DBT模型集成了现有信任模型的优点,并且支持协议的完全可模拟性。
By the analysis of the reason of using a trust model in UC（Universally Composable） secure computation,overseas existing trust models were researched and their merits and demerits were indicated.Then based on Divided Bi-Trapdoor,a trust model named DBT that has the flavor of a ＂public-key infrastructure＂ was proposed,and as an experiment,a UC secure commitment protocol was implemented in this model.The DBT model has the complementary benefits of the existing models,and especially supports the full-simulation of protocols.
出处
《四川大学学报（工程科学版）》
EI
CAS
CSCD
北大核心
2012年第3期106-111,共6页
Journal of Sichuan University (Engineering Science Edition)
基金
国家自然科学基金资助项目(60703115)
国家"863"计划资助项目(2007AA01Z405)
关键词
密码协议
通用可组合
安全计算
承诺协议
信任模型
cryptographic protocol
universally composable
secure computation
commitment protocol
trust model
