计算机数据安全删除的研究与实现

数据安全是计算机安全问题的核心，存储在计算机上的涉密数据，必须做到安全删除才能防止因被恢复而发生失泄密事件。在介绍了计算机数据存储原理的基础上，详细阐述了当前数据安全删除的原理和方法，分析了覆写安全删除的技术原理，实现了一种基于覆写技术的数据安全删除方法，并给出了程序实现的核心代码。实验证明，该方法对于普通文件具有很强的实用性和可操作性。

Study and Implementation of Computer Data Secure Deletion

Data security is the core of computer security, sensitive data stored in the computer must be, when necessary, safely deleted, thus to prevent the data leakage incurred due to the recovery. This paper, based on the principles of computer data storage, describes in detail the current principles and methods of data secure deletion, analyzes the technical principles of data overwriting, achieves an overwriting-based data secure deletion method and gives the core code. The experiment indicates that this method is of strong practicability and operatability for the ordinary files.