摘要
数据有效加密是信息安全一个最根本的要求。近年来各种加密方法层出不穷。文中讨论了信息加密的基本方面,提出一种基于代数数的加密方案,利用代数数的无周期性和无穷性,产生密钥流;利用Sturm定理和二分法,给出一类代数数的快速展开计算密钥流的算法。文章还讨论了实现策略,给出了实例,表明了算法的有效性和实现效率。
Valid data encryption is the fundamental requirement in information security. Basic concepts in information security were discussed firstly and a sequences encryption based on algebraic number with non-periodicity, randomicity and infinity was presented. A rapid digits expansion algorithm of algebraic number was built to calculate stream cipher using Sturm's tool and dichotomy. Some strategies were discussed to implement the new Encryption and numerical experiments verified its efficiency.
出处
《计算机应用》
CSCD
北大核心
2004年第12期64-66,共3页
journal of Computer Applications
基金
桂林电子工业学院博士基金资助项目 (Z2 0 3 3 1 )
广西教育厅基金资助项目 (D2 0 0 43 0 )
关键词
信息安全
有效数据加密
密钥流
代数数
information security
algebraic number
valid data encryption
stream cipher
