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Intercepting File read/write request from any programHI,
I am wrtting a security tool which will encrypt all doc, xls, etc files on a system drive and after that it intercept read request for that files from any program, it will first decrypt the content of file on the fly and return the decrypted content to the calling program. My problem is I dont know how to setup up the hook on a filesystem (NTFS, FAT) and return the decrypted content to the calling prgram such that this decrypting process is transperent to the calling program. Any help/lead/suggestions will be highly appreciated. Best Regadrs VJ
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On Wed, 1 Feb 2006 15:16:32 +0300, "VJ" <s*@ss.com> wrote: I suggest you give up on that>HI, > >I am wrtting a security tool which will encrypt all doc, xls, etc files on a >system drive and after that it intercept read request for that files from >any program, it will first decrypt the content of file on the fly and return >the decrypted content to the calling program. > >My problem is I dont know how to setup up the hook on a filesystem (NTFS, >FAT) and return the decrypted content to the calling prgram such that this >decrypting process is transperent to the calling program. > >Any help/lead/suggestions will be highly appreciated. - it is possible as people do it - see http://www.sysinternals.com/ - but you are into the area of writing device drivers, and VB will not do that You might possibly be able to buy in something from sysinternals, but it would be expensive and probably not work with VB Where is the security, if when an application requests data it gets
decrypted, how will your "driver" distinguish between an applicaion with legitimate rights and one without suitable rights. Probably easier to use the built in encryption that ships with NTFS. Best Regards Dave O. Show quoteHide quote "VJ" <s*@ss.com> wrote in message news:uS%23SnlyJGHA.3100@tk2msftngp13.phx.gbl... > HI, > > I am wrtting a security tool which will encrypt all doc, xls, etc files on > a system drive and after that it intercept read request for that files > from any program, it will first decrypt the content of file on the fly and > return the decrypted content to the calling program. > > My problem is I dont know how to setup up the hook on a filesystem (NTFS, > FAT) and return the decrypted content to the calling prgram such that this > decrypting process is transperent to the calling program. > > Any help/lead/suggestions will be highly appreciated. > > Best Regadrs > VJ > yeah i think using the NTFS encryption is the best option available right
now for me to deal with this problem. thanks Dave Show quoteHide quote "Dave" <nob***@nowhere.com> wrote in message news:udnXQH0JGHA.1320@TK2MSFTNGP15.phx.gbl... > Where is the security, if when an application requests data it gets > decrypted, how will your "driver" distinguish between an applicaion with > legitimate rights and one without suitable rights. > > Probably easier to use the built in encryption that ships with NTFS. > > Best Regards > Dave O. > > "VJ" <s*@ss.com> wrote in message > news:uS%23SnlyJGHA.3100@tk2msftngp13.phx.gbl... >> HI, >> >> I am wrtting a security tool which will encrypt all doc, xls, etc files >> on a system drive and after that it intercept read request for that files >> from any program, it will first decrypt the content of file on the fly >> and return the decrypted content to the calling program. >> >> My problem is I dont know how to setup up the hook on a filesystem (NTFS, >> FAT) and return the decrypted content to the calling prgram such that >> this decrypting process is transperent to the calling program. >> >> Any help/lead/suggestions will be highly appreciated. >> >> Best Regadrs >> VJ >> > > 
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