【摘要】 首先提出一个基于椭圆曲线密码体制的签密方案。该方案是数字签名和公钥加密的有机集成,除了具有认证性、保密性外,还具有计算量与通信量小等特点。在此基础上,构造了一个基于椭圆曲线密码体制的(t,n)门限签密方案。该方案具有数据传输安全、鲁棒性、通信代价更小、执行效率更高等特点。还给出两种方案的安全性分析。更多还原

【Abstract】 In this paper,a signature encryption scheme based on ellipse curve cryptosystem is proposed.The scheme perfectly integrates digital signature scheme with public key cryptosystem,it has authentication, secrecy,less computation cost and less communication cost.Then we use a threshold scheme to construct a (t,n) threshold signature encryption scheme based ellipse curve cryptosystem.The scheme has more secrecy of data transmission,robustness,requires less communication cost and performs efficiently etc.The security analysis of two scheme is proposed.更多还原