File Transparent Encryption System Design Based on Security Directory

Using the Minifilter framework and AES group encryption algorithm, the paper develops a filter driver for encrypting the file of particular types under the security directory. The principle of the file system filter driver is discussed here, and makes a special research about the file operation process especially for word format. This paper also makes a deep analysis of transformation mechanism between the plaintext and ciphertext, and the implementation algorithms of encryption and decryption. Finally, the paper describes the method of path filtering in detail.

Webpage Tamper-Resistant Strategy Based on File System Filter Driver and Event-Triggered

In order to develop a more practical, higher security and less time-consuming webpage tamper-resistant system, we proposed a webpage tamper-resistant strategy on the basis of original tamper-resistant strategies and technologies in the paper. This strategy adopted the file system filter driver and event-triggered technology. It also controlled users writing operations through the file filter driver of the bottom of the system, which can efficiently and actively prevent attackers illegal tampering. At the same time, it had also set up a monitoring module. The monitoring module and the tamper-resistant module formed a self-protection mechanism of the ring. Therefore, the strategy can greatly improve the security of system.

Research and Design of the Keyboard Filter Driver

Driver is a communicated program between the operating system and hardware. It is the responsibility of handling I/O request packet. Keyboard filter driver which used Windows NT driver model is completed in DDK developed environment. This driver realized filtering and recording key information. Its convenient for users to view information of keyboard history. The design of this driver can also be studied for other Windows drivers.