【摘要】 针对电子文档的安全保护问题，提出了Microsoft Word文档的窜改快速定位技术与方法，设计了相应的防窜改定位系统原型。该系统可以与现有的备份服务器系统结合使用，大大减少备份更新的时间。模拟结果表明，该系统不仅能够进行窜改检测，而且可以将窜改行为定位在一定范围内。更多还原

【Abstract】 A technology of location the illegal manipulation to Microsoft Word documents is addressed and the corresponding system prototype is designed. This system can be combined with existing backup server and reduce greatly the time consumed on backup and updating. The result of simulation reveals that this system can not only detect the illegal manipulation but also locate them in definite range.更多还原