Rijndael的一种改进算法及其实现研究  

Ameliorated Method Based on Rijndael Algorithm and its Implementation

作　　者：陈作新[1] 刘鸿雁[1] 

机构地区：[1]鞍山科技大学计算机科学与工程学院,鞍山114044

出　　处：《计算机工程与应用》2004年第28期78-80,95,共4页Computer Engineering and Applications

摘　　要：文章提出了一种可应用IC卡数据加密的Rijndael改进算法。改进算法通过用随机密码对明文补位,实现密文与明文的长度相同;通过改进密蚎扩展算法,保障新算法安全;通过减少加密轮次,降低其时间复杂度,从而使其在IC卡数据加密系统中的应用可行。文章在Delphi环境下设计了封装该改进算法和原算法的控件。文中对该控件进行了测试,测试表明改进算法较Rijndael算法更适合应用于IC卡系统中。An ameliorated algorithm based on Rijndael used in IC Card systems is put forward in this paper.The ame-liorated algorithm ensures the length of the cryptograph equal to the length of its original text by patching it with ran-dom cipher codes,ensures the security by ameliorating the Key Expansion Algorithm,and debases the time complexities by cutting down encrypting times,which makes the new algorithm be used in the system.A component sealing both the ameliorated algorithm and Rijndael algorithm is developed and tested in Delphi.The result proves that the Ameliorated Algorithm is more applicable than Rijndael Algorithm in IC Card System.

关 键 词：安全 加密 RIJNDAEL 算法 控件 

分 类 号：TP309[自动化与计算机技术—计算机系统结构]