File-based drive technology, or technology-based Hook?
Hook drive technology and technology is transparent encryption system two schools, is one of the important indicators distinguish transparent encryption system. This can be reduced to the question: encryption software client is to monitor how to read and write files? File drive mode, the program works in the underlying operating system (i.e., drive layer), it monitors the session operating system and hardware devices. APIHook way, the program of work between the operating system and application software is running on the operating system level, it is the monitoring session operating system and application software.
Therefore, the file is drive technology for the operating system in terms. In principle, transparent encryption file system drive mode can support all applications on a particular operating system platform, because it does not care about the session operating system and application software, only interested in the way the operating system and hardware deal.
The API Hook technology is for the purposes of operating systems and application software two factors. In principle, transparent encryption software APIHook way, after support an application software on top of an operating system (such as AutoCAD2008 On Windows XP), does not naturally mean the same operating system, another application software (for example CAXAOn Windows XP) can be supported. Of course, if the operating system and application software to replace the same situation (bearing the example AutoCAD2008 On Windows Vista), it may not be able to get natural support.
From practice, it is true. The same is WindowsXP operating system, in order to support different application software, file encryption system drive mode, you only need to work to setup / configuration level; however Hook way system may need to be developed, in order to use the revised code.
Early Hook transparent encryption system to use more technology, and most of them start from AutoCAD, MicroSoftWord and other extremely common application software. From 2005 to early 2006, the country began to appear transparent file encryption system based drive technology. More than two years, part of the transformation of the core encryption software vendors, to give up the Hook manner using a file-driven approach; after 2007 almost all new companies are also using the most file drive. Visible, Hook approach, while relatively simple to implement, but obviously a transitional technology, has entered the stage of elimination.
The system uses file encryption technology or Hook drive technology, which also indirectly related to the operating system can support.
Transparent encryption system currently available in the market are only supported Windows operating system does not support MacOS, Linux and Unix. On all versions of Windows inside the series, the most products on the market can support Windows 2000, Windows2003 and WindowsXP, some manufacturers have introduced support WindowsVista, Win2008, Win7, Win8 version. As the trend of using the updated operating system, enterprises should be examined during the selection.
Transparent encryption without affecting the user's operating habits, to achieve data file encryption , does not affect the user's operating habits!