摘要
针对大量已经过时无用的数据,应该及时进行彻底地销毁以避免非授权用户利用残留数据恢复原始数据信息,以达到保护原始数据的目的。根据磁性介质存储特性,提出一种利用全0覆写、全1覆写、随机覆写和反馈覆写方法相合的,不少于35次覆盖原始数据的深度覆写技术彻底销毁原始数据的算法,使利用高灵敏度的磁力扫描隧道显微镜也几乎不可能恢复还原数据。该算法以牺牲一定的时间复杂度为代价,尽最大可能追求其安全性能,使得数据一旦销毁后就无须担忧被恢复还原。
According to a large number of outdated and useless data, should be timely and thorough de- struction to avoid unauthorized users by using the residual data to recover the original data in- formation, in order to protect the original purpose of data. According to the characteristics of magnetic media storage, the use of a total 0, total 1 overwrite overwrite, random overwrite and feedback override methods consistent, not less than 35 times the depth of covering raw data writing technology thorough destruction of original data, make the use of magnetic scanning tunneling microscopy with high sensitivity is almost impossible to restore restore data. The algo- rithm complexity at the expense of a certain period of time, as much as possible in the pursuit of its safety performance, makes the data once destroyed it need not worry be restored.
基金
楚雄师范学院院级科研项目(No.11YJRC07)
关键词
剩磁效应
彻底销毁数据
多次深度覆写
Residual Magnetism Effect
Destroy Data
Multiple Depth Overrides
