Dear All,
I need to Encrypt/Decrypt data routed to specific drive(Hard disk). I’ve been told to achieve this by writing a Upper filter driver (one which lies between class driver and file system driver). Where can find the sample code for the same.
Thanks for the help…
Sincerely
ML
Hi,
The NT DDK Contains a sample for a upper filter driver, it is called
diskperf.
I don’t recall the exact directory but it is there 
When I started looking at whole drive encryption this is what I used as my
Boiler plate code. Just don`t try to encrypt your boot drive
Hope that gets you started.
Ben Curley
Software Engineer
Data Encryption Systems Ltd.
Tel: +44 (0)1823 352357 (Main)
Tel: +44 (0)1823 358320 (Direct Dial)
From: Nagaraja M.L [mailto:xxxxx@integramicro.com]
Sent: 10 November 2003 06:46
To: Windows File Systems Devs Interest List
Subject: [ntfsd] Upper filter driver for Encryption/Decryption
Dear All,
I need to Encrypt/Decrypt data routed to specific drive(Hard disk). I’ve
been told to achieve this by writing a Upper filter driver (one which lies
between class driver and file system driver). Where can find the sample code
for the same.
Thanks for the help…
You are currently subscribed to ntfsd as: xxxxx@des.co.uk
To unsubscribe send a blank email to xxxxx@lists.osr.com
Doing whole drive encryption even on the boot drive is not that difficult.
SafeBoot has a product that does it. One of the main developers lives in
the UK.
wrote in message news:xxxxx@ntfsd…
>
>
> Hi,
>
> The NT DDK Contains a sample for a upper filter driver, it is called
> diskperf.
> I don’t recall the exact directory but it is there
>
> When I started looking at whole drive encryption this is what I used as my
> Boiler plate code. Just don`t try to encrypt your boot drive
>
> Hope that gets you started.
>
> Ben Curley
> Software Engineer
> Data Encryption Systems Ltd.
>
> Tel: +44 (0)1823 352357 (Main)
> Tel: +44 (0)1823 358320 (Direct Dial)
>
> Web: http://www.deslock.com
>
>
> ________________________________
>
> From: Nagaraja M.L [mailto:xxxxx@integramicro.com]
> Sent: 10 November 2003 06:46
> To: Windows File Systems Devs Interest List
> Subject: [ntfsd] Upper filter driver for Encryption/Decryption
>
>
> Dear All,
>
> I need to Encrypt/Decrypt data routed to specific drive(Hard disk). I’ve
> been told to achieve this by writing a Upper filter driver (one which lies
> between class driver and file system driver). Where can find the sample
code
> for the same.
>
> Thanks for the help…
>
> Sincerely
> ML
> —
> You are currently subscribed to ntfsd as: xxxxx@des.co.uk
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>
>
True, it isn’t that difficult to implement boot drive encryption, but you
Do have to be aware of a few more things. You also need to know some
assembler
To write the boot sector (not really that hard, but no go if you only know
VB!)
You also have to aware of the things people do with there machine and try to
Accommodate as many as possible as to not limit your product (multiple
operating
Systems is one such area)
Anyway, it is a whole load easier than doing a filter driver
Ben
-----Original Message-----
From: David J. Craig [mailto:xxxxx@yoshimuni.com]
Sent: 10 November 2003 10:16
To: Windows File Systems Devs Interest List
Subject: [ntfsd] Re: Upper filter driver for Encryption/Decryption
Doing whole drive encryption even on the boot drive is not that difficult.
SafeBoot has a product that does it. One of the main developers lives in
the UK.
wrote in message news:xxxxx@ntfsd…
>
>
> Hi,
>
> The NT DDK Contains a sample for a upper filter driver, it is called
> diskperf.
> I don’t recall the exact directory but it is there
>
> When I started looking at whole drive encryption this is what I used as my
> Boiler plate code. Just don`t try to encrypt your boot drive
>
> Hope that gets you started.
>
> Ben Curley
> Software Engineer
> Data Encryption Systems Ltd.
>
> Tel: +44 (0)1823 352357 (Main)
> Tel: +44 (0)1823 358320 (Direct Dial)
>
> Web: http://www.deslock.com
>
>
> ________________________________
>
> From: Nagaraja M.L [mailto:xxxxx@integramicro.com]
> Sent: 10 November 2003 06:46
> To: Windows File Systems Devs Interest List
> Subject: [ntfsd] Upper filter driver for Encryption/Decryption
>
>
> Dear All,
>
> I need to Encrypt/Decrypt data routed to specific drive(Hard disk). I’ve
> been told to achieve this by writing a Upper filter driver (one which lies
> between class driver and file system driver). Where can find the sample
code
> for the same.
>
> Thanks for the help…
>
> Sincerely
> ML
> —
> You are currently subscribed to ntfsd as: xxxxx@des.co.uk
> To unsubscribe send a blank email to xxxxx@lists.osr.com
>
>
—
You are currently subscribed to ntfsd as: xxxxx@des.co.uk
To unsubscribe send a blank email to xxxxx@lists.osr.com