【摘要】 本文简介了几种典型的密码术,具体讨论了一些软件实现过程中所遇到的问题,并针对某些方面的不足,对算法作了一些改进,且对这些改进作了一定的讨论.更多还原

【Abstract】 Several typical cryptograhies are introduced in this paper. The problems which were met in the process of the implementation are discussed in detail, and in order to improve the validity, some improvements are made on the algorithms. Analysis about the improvements are also provided in this paper.更多还原