摘要
在现代密码体制中,数据的加密算法是公开的,数据的安全性主要取决于对密钥的保护.文章利用拉格朗日多项式插值法来讨论密钥的保护问题,给出了基于密钥片的(t,n)门限方案对所产生密钥进行保护的原理,并给出了相应的实例.
Data-encrypted is open in modern code system. The security of data lies mainly on the safeguard for the key. A safeguard problem on key is discussed using Lagrange interpolation poly-nominal, and safeguard principle based on the key pieces threshold scheme is given. Corresponding examples is given.
出处
《太原师范学院学报(自然科学版)》
2005年第2期12-14,30,共4页
Journal of Taiyuan Normal University:Natural Science Edition