基于序列块的大文件快速加密方法研究与实现  

RESEARCH AND IMPLEMENTATION OF SEQUENCE BLOCK-BASED FAST ENCRYPTION METHOD FOR LARGE FILES

作　　者：徐汇文 花嵘[1] 傅游[1] 

机构地区：[1]山东科技大学信息科学与工程学院,山东青岛266590

出　　处：《计算机应用与软件》2015年第3期293-296,共4页Computer Applications and Software

基　　金：山东省高等学校科技计划项目(G11LG22);青岛经济技术开发区重点科技发展计划项目(2012-2-48)

摘　　要：针对大文件采用传统加密算法加密所需时间长的问题,提出一种基于序列块的大文件快速加密方法。以若干个字节组成的序列块为单位,分三步将原文序列顺序彻底打乱,以达到加密效果。此外,对加密后的多个大文件,通过捆绑加密方法模糊了单个文件的界限,进一步提高了安全性。最后,通过与DES算法和RC2算法的对比实验证明了基于序列块的大文件加密算法的高效性。In order to resolve the problem that to encrypt large files with traditional encryption algorithm costs long time,in this paper we present a sequence block-based fast encryption method for large files. By using the sequence block consisting of many bytes as the unit,this method completely disrupts the sequence order of original file through three steps to achieve the effect of encryption. In addition,for the encrypted multiple large files,it blurs the boundaries of individual files in the way of bundled encryption method,which further improves the security. Finally,through comparative experiments with the DES algorithm and RC2 algorithm,the high efficiency of the encryption method proposed in the paper is proved.

关 键 词：大文件 加密 序列块 乱序 捆绑 快速 

分 类 号：TP309.7[自动化与计算机技术—计算机系统结构]