正交表在门限方案设计中的一种应用

Application of orthogonal table to threshold scheme

引入了正交表的概念 ,讨论了正交表的性质和构造 ,基于正交表建立了一种新的门限方案 .子密钥的长度小于主密钥的长度是这种门限方案的优点 .同时 ,本方案还将每个用户的子密钥数正比于用户的重要性 ,可以辨认子密钥人员的合法性以及有效防止子密钥和主密钥的篡改 .

This paper introduces the concept of the orthogonal table, discusses the construction of the orthogonal table and its properties, presents formalization definition of (k, n) threshold scheme and describes a new efficient (k, n) threshold scheme based on an orthogonal table. The explicit advantage of this scheme lies in that the sub key has a much shorter size than the master key. Another ability of the scheme makes the number of sub key proportionate to the importance of the user so that it can identify the validity of sub key user and discover the deliberate tampering of the false trustees or the legal trustees.