Writing file system filter driver

I want to create a file system filter driver, which will encrypt the data while writing to disk and will decrypt the data while reading. (I hope one needs to use IRP_MJ_WRITE and IRP_MJ_READ)

OS: Windows XP
I've the DDK/IFS kit.

I'm modifying the example of SFilter in IFS kit. I want this file sytem filter driver to work only for Floppy drive.

Any example source code, pointers to specific documents will be helpful.

- Mayank
mayank_ahujaAsked:
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AlexFMCommented:
Try to ask here:

http://www.osronline.com/
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jkrCommented:
Or, - more specifically - as I already mentioned in http:Q_21125606.html#12507256

http://www.osronline.com/article.cfm?id=40 (" Fun With Filters - Win2K/WDM Device Filter Drivers "). Plus, the source code of an older version of SystemInternal's FileMon filter driver (http://www.sysinternals.com/ntw2k/source/filemon.shtml) can be found on http://www.programmersheaven.com/zone15/cat239/2424.htm 
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