计算机技术与发展Issue(7)：166-169,4.DOI:10.3969/j.issn.1673-629X.2014.07.041
基于DES及其改进算法的文件加密系统
Encrypted File System Based on DES Algorithm and Its Improved Algorithm
摘要
Abstract
With the rapid development of information technology,information security has become an important problem in current socie-ty. Data Encryption Standard ( DES) which has high security has been widely used in various fields. However,many in-depth researches have shown that this algorithm has many deficiencies. Based on the previous DES algorithms,propose an improved method,which com-bines the advantages of the triple DES algorithm and the separate sub-key algorithm. In the new strategy,the original 64-bit key is ex-panded to 128 bits,it enhances the encryption strength by the process of double encryption,and also improves the security and efficiency through adopting the independent sub-key. According to the method,design an encrypted file system,then test its performance by the files of . word,. pdf,. mp3 and other formats,and the results show that the system is feasible and effective.关键词
数据加密标准/对称加密算法/文件加密系统/独立子密钥Key words
DES/symmetric encryption algorithm/encrypting file system/independent sub-keys分类
信息技术与安全科学引用本文复制引用
爨玉伟,阮晓宏..基于DES及其改进算法的文件加密系统[J].计算机技术与发展,2014,(7):166-169,4.基金项目
广西壮族自治区创新团队项目(GXNSFGA060004) （GXNSFGA060004）
广西师范大学项目 （）
