基于LZMA和多版本的网页防篡改备份恢复机制

摘要

针对当前网页防篡改系统普遍忽略备份恢复的缺陷,提出了一种网页防篡改系统模型,在此模型基础上设计了一个高效安全的网页防篡改异地备份恢复系统.此系统采用多版本控制技术管理备份网页数据,可以根据用户需求恢复不同时期不同版本备份数据.备份数据采用高效的LZMA压缩存储,有效提高了磁盘利用率,采用DES算法加密和文件传输协议(FTP)实现安全的远程存储及传输.最后,系统性能测试说明此系统在不影响Web服务器负载前提下能对Web服务器数据进行有效的备份和恢复,能保证单个被篡改的网页在100 ms内恢复,是解决网页篡改问题的一个有效手段.%Because the functions of backup and recovery are usually ignored in the Web anti-tamper system, a Web anti-tamper system model was proposed in this paper, based on which a safe and efficient remote backup and recovery system was given. The multi-version management technique of backup data was used for restoring the data of different versions and different periods. The Lempel-Ziv-Markov chain Algorithm (LZMA) was used to compress the backup data for improving the disk utilization. The Data Encryption Standard (DES) and File Transfer Protocol (FTP) were used for secure remote data storage and transmission. Finally, the system performance test shows it can effectively backup and recover the Web server data without affecting the Web server load and recover a single page within 100 ms. It is an effective means to solve the Web tampering problem.