摘要： 提出了一种基于(m，n)-门限方案和椭圆曲线密码体制的数据加密方案。在该方案中，用户分为单人用户和群组用户两种类型。群组用户是指由多个(设为n个)参与者组成的一个集体，他们共同分享一个私钥，每个参与者只拥有一个与其他用户不同的私钥的影子。单人用户是指个人用户，其私人密钥为个人所有。

关键词: (m,n)-门限方案, 数据加密方案, 椭圆曲线密码体制, LaGrange插值公式, 椭圆曲线离散对数问题

Abstract: This paper proposes a scheme of data encryption based on the (m,n)-threshold scheme and elliptic curve cryptosystem in which users are handled as an individual-user and a group-user. A group-user is a group made up of many (may be n) participants, each of whom holds a shadow of a common key (private key) different from one another. An individual-user is one who holds the key all by himself.

中图分类号: 

• TN918.6